2013年12月30日星期一

You understand the hazards of the TV with a tail !

The trailing edge of the display device that appears when you display dynamic images scared , can not see the details of the phenomenon. Tailing phenomenon is not caused by decreased sharpness of the image , and people are likely to produce visual fatigue ,lcd graphic display modules long-term view will appear dizziness, decreased vision symptoms. Even if because of your bad eyesight , can not distinguish the tailing phenomenon, long-term vision for your viewing will be adverse health effects .


LCD TVs are currently exist tailing phenomenon. Because LCD TVs due to the limited light-emitting principle , the response time of more than 4 ms , and plasma TV, CRT TV 's response time to achieve microsecond . Although LCD TVs in solving problems on the tail made ​​some progress ,OLED Display Module but in quite a long time can not fundamentally solve the problem .

Adjust the brightness allows a more realistic color representation

Brightness is the brightness of the LCD TV is the brightness of the screen, it is also an important parameter index LCD TVs. Reasonable brightness can make our eyes more comfortable, but it will not affect the color performance of the screen. In general, high brightness hand easily cause visual fatigue, but also to reduce the black and white contrast , the impact of color gamut and grayscale performance. Because the brightness of the LCD TV is achieved by adjusting the backlight . The higher the backlight brightness , LCD TV itself more easily to dilute colors , picture whiten.

Now available in many of the hundreds of known brightness of the LCD TV 1000 lumens, 2000 lumens , is not good , you know the brightness of traditional CRT TVs generally about 300-600 lumens, has a very good performance . The actual use situation, adjust the brightness of LCD TVs 50% is more appropriate . If you feel too bright , some may be further reduced in accordance with the actual situation. If the brightness of more than 70 %,I2C Lcd Display it may affect the performance of the color screen .

Small with disabilities : The current general brightness of the LCD TV backlight control by using CCFL (cold cathode fluorescent lamp ) backlight technology, the performance of the NTSC color gamut for only about 75% , while the use of LED backlight LCD TV can show more wide color gamut can be more than 100% NTSC color gamut .

 Contrast adjustment presented with more picture detail

Contrast is the same point on the screen when the brightest ( white ) when the ratio of the darkest (black ) of brightness , higher contrast ratio means that the screen can show more detail , can show more color scale, which makes colors more gorgeous. Unfortunately , the current market value of most LCD TVs contrast marked , are called dynamic contrast ratio, basically not much real meaning.

That is why when we adjust the LCD TV QVGA lcd, nor can it adjust the contrast is too high , otherwise it could lead to a situation picture whitening ; If too low , it may be an excellent screen color is very light situations. In general, about 50% of the contrast value is more appropriate . In addition, if a non- special needs , the best dynamic contrast feature LCD TV off.

2013年12月16日星期一

The definition LCD module

LCD module simple point that the screen backlight + + PCB board + iron box.
Power terminal , instruments and other components is a liquid crystal display module ,TFT Lcd Modules its position is equivalent to the CRT picture tube .
The other part includes a power supply circuit , a signal processing circuit, of course what the housing .
The main screen is divided into modules and backlight components. The two parts are assembled together, but when the work is independent of ( i.e., the circuit is not associated ) .
Principle LCD backlight unit is issued uniform surface light, the light transmitted through the LCD screen of our eyes. The screen in pixels is the role of these light processing to display an image. Both parts contain a lot of components ,graphic oled module will not elaborate here .

Recently, on the bottom of radiation LCD PC TV talk

Whether it is recognized as a large amount of electromagnetic radiation in the microwave , or usually do not pay attention to the cooker, the appliance packaging, can not be found on electromagnetic radiation logo. Generally , electrical power , the higher the amount of electromagnetic radiation , tablet computers and some even 100 watt power not to, how can the kilowatt cooker than , of course, a greater amount of radiation cooker .

On the market for almost all appliances are not marked amount of electromagnetic radiation ,Character LCD Modules and electromagnetic radiation tester out data , it would not be very accurate , such as the TV in the boot of the moment, electromagnetic radiation than normal when viewed a hundred times higher than the amount of energy , in addition, the amount of radiation zapping time is relatively large , the manufacturers could get no authoritative data collection.

Typically air conditioning , a small amount of electromagnetic radiation router , heater, refrigerator , washing machine and cooker , and in the range of the human body can withstand . Electromagnetic radiation other appliances are more than this range , it is recommended for pregnant women and other special populations or pay attention to prevention.

Recently, a list of household appliances online is a lot of radiation forwarded . This list is scheduled cooker appliance radiation precedence ranked first , followed by hair dryer . Have another list that electromagnetic radiation up to Tablet PC , followed by hair dryer , microwave ovens were lined up in third place , followed by electric blankets , old-fashioned TV , cooker , mobile phones, desktop computers and graphic lcd display module screen TV. But whether manufacturers or distributors, have to take specific appliances no radiation data .

The vast majority of consumers called on manufacturers to self-test , and then the same energy level as the label , clearly marked electromagnetic radiation appliance , and then carry out spot checks by a third party testing organization . In this way, consumers can know the answer .

2013年12月9日星期一

Mainstream surveillance systems leading LCD splicing

LCD Video Wall manufacturers agreed that , even if not become the Terminator technology DLP Video Wall LCD splicing technology will become the largest market share of technology. Products and technologies growing stronger and stronger so that the LCD display market matured , the need to take the sustainable development and revitalization strategies, will be high -quality products, professional technology, advanced services for the advocacy of outstanding enterprises have the potential to push the broader arena . In terms of monitors, large-screen video wall , DLP and LCD screen had been hard to compete with , each has unique advantages , the future of this pattern may be quickly changed. LCD screen splicing splicing technique is stitching each unit as a separate processing system , a complete signal input and control signals processed by the unit alone , so you can ensure a smaller amount each unit body signals to be processed , fully guaranteed image clarity and smooth video .

Large-screen display wall video surveillance system has been essential terminal , its large field of view and a stable display performance monitoring system provides real-time images of the scene . Contrast the current security products in the field of DLP projection technology , LCD picture quality and overall cost effectiveness have the clear advantage. In the field of security monitoring system , LCD large screen display wall systems are gradually replacing the traditional CRT, DLP mosaic wall , as the preferred successor of professional security monitoring stitching large screen . In the important parts of the national key traffic, transport hubs , stadiums and other large , increasingly used to build large-screen lcd graphic display monitor command system has become a trend. In the field of security surveillance systems , liquid crystal display device of its salient features excellent color performance , high-quality , low power consumption, long life , a comprehensive alternative to plasma display devices , occupies a leadership position . Video surveillance systems are an important part of each unit security system , with its intuitive, accurate, timely and informative content and widely used in many occasions. Video surveillance of LCD flat panel display wall has become a main trend completely display system .

In recent years , with the rapid development of computer , networking and image processing , transmission technology , video technology under constant development , the video display technology has made great progress , from analog CRT display technology transition to the DLP, PDP Plasma, LCD LCD digital display technology, the transition from a heavy thick to thin flat screen displays the structure of the device , its thin, lightweight characteristics , an additional advantage of digital display devices have a low price to promote the use of it quickly .

Each size LCD screen splicing products have applications in more segments beheaded exposed corner , continues to introduce new technologies is their positive energy , professionalism and technical that conduct. LCD screen display products and technology advances drive the COG LCD Module Video Wall industry to move forward and further enhance its market position . LCD-screen breakthrough application products in the market, can be said to have experienced a rigorous test of the market , to subvert the traditional application model.

Common LCD TV screen with working class differences with liquid crystal displays

We used the LCD TV screen and in the industrial application of liquid crystal display devices have many differences, listed below for your reference .


1 LCD TVs due to the use of environmental requirements actions, the image is displayed after the rendering , you can not completely reflect the actual results. Because the display is usually observed as a static image , and thus the display color reproduction requirements higher than TV
, The discharge channel as a professional display in brightness , chroma processing and R, G, B should have a precise compensation processing circuit and delay circuit to ensure that the light / color signal and R, G, and B signals synchronized phase . If the resolution is mainly determined by the amplitude-frequency characteristics of the video channel , then the reduction mainly by the display of the red (R), green (G), blue (B) color signal and luminance signal phase of the three primary colors decision.

2 LCD TV screen is not self-locking component BNC input connector and DVI-D interface. If the color RGB BNC port industrial LCD monitor with multi-use interface and self-locking mechanism professional DVI-D video interface.

3 LCD TV screen dust heat without strict requirements . Industrial LCD monitor is designed without mechanical exhaust fan must be used to maintain air circulation and cooling , thus avoiding dust and fan noise issues , when the internal temperature rises for unknown reasons , the monitor from
Dynamic backlight control system to maintain the temperature below the maximum operating temperature.

4 in the installation, commissioning , especially on the components and the aging process requirements , monitor requirements are higher, the TV manufacturing machine aging in the pipeline is usually energized about 8 hours at room temperature , and the display of the machine age on the aging pipeline requires high temperature and humidity in a closed environment energized aging for more than 24 hours to ensure the stability of the whole machine. The display when closed-circuit monitoring system constitutes , usually 24 hours a day , 365 days a year of continuous uninterrupted electricity use ( and the TV is usually only a few hours a day of work ) , and some monitors may be more harsh application environments , which requires the display higher reliability and stability . In the selection of components , various components of the voltage characteristics , current, temperature , humidity and other displays used are higher than TV components ; compared with television , in the design, display current , power, temperature and resistance to electrical interference , capacity and electric shocks margin and the average time between failures are much larger than the TV , while the monitor must also use fully shielded metal housing to ensure electromagnetic compatibility and interference.

5 S232 serial LCD TV display using the remote control can only be achieved with the control command , and can not achieve industrial controls. S232 LCD display with serial control OLED Display, and open up to more than 200 control password , adapt to a variety of industrial environments , easy multi-monitor
When used without the remote control can control all display devices , and be able to assist, boot time , delay boot, self-test machines and other industrial requirements.

6 LCD TV display supports several television used only as specified in the instructions resolution , LCD TV as long as the resolution is based on several commonly used by civilian users was more effective treatment . LCD monitors and high reliability and high-definition display capabilities will ensure that you can compile a good record high-definition video, the video signal is displayed in the viewer a complete front . LCD monitor is the preferred choice of display, intuitive reflect the image quality features , combined with full 1920 x 1080 resolution selected , the display resolution for professional broadcast television display device resolution is automatically adjusted according to the display output.

7 LCD TV display all of the non-metallic material whole shell design , interior design plate line is the use of civil , mechanical aging is likely to cause prolonged power . Due to the use of environmental requirements , LCD TV screen machine part made ​​of metal shell material texture . And the internal plate lines are industrial design , not easy to aging ; embodies the concept of energy saving : low power design ; environmentally friendly materials. Neat appearance , ease of stitching industrial needs serial 20x2 lcd, the combination of installation.

2013年12月3日星期二

What is VGA Interface

Q : VGA interface is the main application of what is ?

A: When it comes to VGA port, I believe many of my friends are not unfamiliar , because this interface is the main interface on the computer monitor , starting from the huge bulky CRT monitors era , VGA interface is being used, and has been in use ever since ,16x2 oled in addition to VGA Interface also known as D-Sub connector.
VGA interface is a D -type interface , a total of 15 pinhole above , divided into three rows, each row of five . Wherein , in addition to 2 NC (NotConnect) signal , 3 and 5 show the data bus signal GND , the more important is the three RGB component signal and two color scanning synchronization signals HSYNC and VSYNC pin . VGA color components using the RS343 interface level standards. RS343 level standard peak voltage of 1V. VGA graphics card interface is the most widely used type of interface , the majority of graphics cards with such an interface . Some graphics without VGA interface and with DVI (DigitalVisualInterface Digital Video Interface ) graphics interface can also be through a simple adapter to convert DVI interface VGA interface , VGA interface will not usually comes this adapter .

Many people think that only the HDMI interface to transmit high-definition signals to , but this is a very easy access to all misunderstanding , because the VGA connection can also display 1080P image resolution can be even higher , so use it to connect a display device Watch the HD video is not a problem , and although it is a kind of analog interface , but because of VGA video signal is decomposed into R, G, B primary colors and HV transmission line field signal , so the loss in the transmission is still quite small.

VGA interface Cause: graphics processing information will eventually be output to the monitor , video card output connector is a bridge between the computer and the monitor , which is responsible for the display output corresponding to the image signal .graphic oled module CRT monitors on the design and manufacture of reasons , can only receive analog signal input , which requires video card can output analog signals. VGA connector is the output of the analog signal on the graphics interface , VGA (VideoGraphicsArray) interfaces , also called D-Sub connector. Although the LCD monitor can receive digital signals directly , but many low-end products in order to match with the VGA interface card , which uses the VGA connector.

Comprehensive analysis IPS panel

Advantage of viewing angle IPS panel is high , fast response , accurate color reproduction , high-end LCD panel products . And compared to PVA panel , using a dynamic IPS screen LCD TV line resolution can reach 780 . The static clarity , in accordance with the definition standards could meet the definition of 720 lines . The panel technology enhances the dynamic display LCD TV when watching sporting events, action movies and other sports programs faster access to better quality. Compared with other types of panels , IPS panels gently draw what is not prone to deformation patterns of water , so there are hard screen said.

IPS technology is currently the world 's most advanced lcd module technology . Compared with the traditional soft-screen LCD , hard-screen LCD IPS hard screen technology response speed faster , showing a motion picture and more smoothly.

It has the following advantages features:

1, the motion picture , two images without blur , motion picture , the response rate even three , dynamic picture , no offset 4 color , green energy-saving 5 , 6 viewing angle for the whole family to share , to restore the true color accurate picture

Flex Screen distinction

1 , touch Coding System lcd module screen , without waterlines phenomenon, can be recognized as IPS hard screen ; If there waterlines phenomenon, can be recognized as a soft screen .

2 , you can use a magnifying glass , liquid crystal molecular shape comparison chart , scaly direction toward the left is full pixel IPS hard screen .

2013年11月21日星期四

Display does not light how to solve?

We often see in the network or forum that someone asked, "My monitor is not lit", "computer display does not light after power" and so such a problem, in fact, the display does not light the reasons are multi-faceted, but most of the main or by the other components due to the factors:

1, the monitor is not connected to the supply;

2, the display power is turned on, the computer host is not normally open;

3, the monitor to the computer directly to the signal cable is not connected properly, or the signal line failure OLED Module;

4, the problem of three black (according to the introduction of three issues to resolve, not repeated here).

Solve Step one: confirm whether it is the monitor power is not on. If the power, turn the power switch on the monitor, the monitor's power indicator will light up. Signal is issued when there is access to green light, no signal is emitted when the orange light access.

Step two solutions: Make sure the host computer and the monitor signal transmission between the cable is properly connected. If properly connected, and the display still does not light, we suggest that you replace a signal line to try again and if it still does not light, then that is not what causes the cable.

Solve Step Three: Make sure the computer mainframe's power is switched on. If the host computer is powered on, press the power button the monitor screen remains blank, then you should check the host computer's hardware is started. Should first check whether the host computer fan rotation, if the fan does not rotate, then that part of the host's power supply problem. If everything can turn the fan, you should check the memory is installed correctly. If you are properly installed, and the computer starts correctly, we suggest that the replacement of the normal use of the host computer to try. If the monitor can light after replacement128x64 lcd display, then that is the original fault monitor itself; if you can not light up, then that host computer problem.

If the problem is the monitor itself, then it should go to the respective brand service center for maintenance and inspection.

Display driver has stopped responding how to solve

"Display driver stopped responding and has successfully recovered" This is in the use of Microsoft Windows7 operating system of the more common problems, the main manifestation of this is the display suddenly black screen, the computer returns to normal after a few seconds,Serial Lcd Display Module and in the lower right corner of the taskbar pop-up " Display driver stopped responding and has recovered "message. This problem generally has two causes:

A hardware problem: the quality of defective memory particles, as well as the design of the card itself has serious problems.

2, the graphics card driver problem: because not installed or not correctly installed graphics driver, some integrated graphics computer system installed Windows7 integrated graphics driver is not installed or motherboard chipset drivers can also show normal Aero effects, but this problem occurs.

Solve Step one: First check whether the video card problems, there are many ways testing, we suggest that you can conduct a comprehensive graphics test software testing.

Solve Step two: Reinstall the complete graphics driver. No matter what brand of graphics card, as long as users understand their own product packaging graphics core graphics chip maker Nvidia or AMD, and then enter the manufacturer's official website for their video card model and operating system version of the latest version of the driver is fully installed, graphics driver can solve the problems.

Solve Step Three: If the first two steps are not effective, then we suggest that you try to shut down the operating system Windows7 Aero effects, specific steps to right-click the desktop and select "Personalize" menu in the "Basic and High Contrast Themes", COG LCD Display select one kind can be.

2013年11月5日星期二

TV routine maintenance Cheats

Instant has entered the spring, believed to be working in your home for a day-long TV also requires you to give it to do a comprehensive maintenance, in order to allow everyone to do maintenance to the TV in the process will not on its damaged, Next, I'll introduce a few Serial Lcd Display Module TVs Maintenance Tips, interested consumers do not miss.


Standard one: avoid prolonged display a still picture. When the machine is not used in a long time, best to turn off the machine, or reduce the display brightness, otherwise easily lead to burn out or aging. In addition, prolonged for a picture display will cause damage to the LCD screen, it may cause some LCD pixel overheating, thereby enabling the TV appear more dead pixels.

Rule two: use the recommended resolution. Currently, some LCD TV resolution can be adjusted, however, use the recommended resolution LCD screen LCD TV is a form of protection, the recommended display resolution LCD TV screen to the highest quality imaging.

Standard three: Avoid scratches, impact surface of the lcd modules screen.

What are the side LED

Slim appearance became dazzling side LED TVs biggest bright spot. According to my understanding, currently on the market side OLED Display Module TV thinnest thickness of the product has been in 1cm or less, while the direct type LED thinnest thickness of the product has also been in 2.28cm.

"Thin" in the end is important unimportant? Appliance industry experts have said that consumers care more about electronics "thin" feature, because it is evident that product quality improvement, is a brand and corporate R & D capabilities and manufacturing technology ultimate visual expression, every inch of reducing both product appearance means the technology upgrade.

In addition, the side-relative and direct type LED TVs LED TV, most of the products are very excellent energy-saving effect. Down to 50 inches LED TV, for example, side-boot 55-inch LED consumes only 115W, while the 52-inch direct type LED power-consumption is 150W,Character LCD Modules power-in on the upper side has certain advantages, but In the direct type LED TV also has more than side-efficient products.

2013年11月4日星期一

Plasma 3D analysis

From the product technology level, to take self-luminous plasma TV technology relative to LCD TV in the contrast ratio, response time , color reproduction , viewing angle and so has a natural advantage :
First , plasma TV screen with high contrast .256x64 oled display  In the 3D display , the contrast of the LCD TV is more serious problem , dark scene more difficult to see. The plasma TV Levels higher level of shadow detail and color performance is more prominent. It is reported that plasma TV giants Panasonic 's latest technology developed by the contrast enhancing contrast to infinity.

Second , plasma TVs colors more realistic. Plasma display each pixel can be independent light, very uniform, no light and dark areas , which makes plasma TV color reproduction capability stronger than LCD TVs .

Third , plasma TVs refresh rate higher dynamic high definition, no smearing. LCD TV screen fluency has always been a problem , but in 3D TV high refresh request, the advantages of plasma TVs are becoming increasingly apparent. Millisecond response time of the liquid crystal molecules significantly with microsecond plasma have a certain gap . Mainstream LCD TV screen refresh rate of 240Hz, while plasma TVs already beyond 600Hz.

Fourth , plasma TVs wider viewing angle .TFT LCD Displays According to the relevant tests showed that plasma 3D TV vertical and horizontal viewing angle can reach 160 degrees, the side watching TV, plasma TV screen and not be affected. The 3D LCD TV compared to 130 degrees, as the angle increases color and level have emerged attenuation.

In addition, large-size plasma TV in the manufacturing advantages are also more suitable for 3D large-screen era. Because the bigger the screen , 3D display , the better , while plasma TVs of 42 inches or more , especially more than 50 inches on the obvious advantages of manufacturing specifications .

LNB OR Response Time

· LNB
LCD TV tuner, the official name is called tuner (tuner), is a television capable of receiving broadcast television signals, cable key device .

Traditional analog TV tuner is a complete analog receiver amplification, gating , frequency , Figure sound demodulation process , if there are aberrations and distortion which will make the received image and sound quality deteriorates . LCD televisions are digital television , the first analog television signal is changed to digital signal compression, transmission, reception , processing, storage , recording and control of receiving terminal via the digital TV tuner to a high frequency amplification, comparison processing , channel decoding and demodulation , and then back through the receiver circuit source decoding processing such as a restored image and sound , which occurs if the distortion error will cause an error , in excess of the range of the tuner can be regulated , can not receive the image and sound .

Digital tuner includes not only an important indicator of the original traditional TV , the phase noise, nonlinear index and lock time and other detection methods also a great difference . Analog TV tuner receives an analog television signal , the number of different high frequency television signal is converted into a fixed frequency output , moving to complete the spectrum . LCD TV tuner to receive digital broadcast television signals , not only to complete the analog tuner to be accomplished by spectrum shifting function, but also complete demodulation and channel decoding. The front end of a digital television receiver , a digital TV tuner digital device , so that in the production process than the analog tuner easy assembly and adjustment , the reliability and stability is greatly improved . Therefore, the digital tuner in technology and processes , there are many different characteristics of analog TV tuner , its performance is much better than analog TV tuner.

LNB performance on cable television signal reception quality of the system a great influence on the electrical properties should be selected high gain, low noise temperature coefficient tuner, tuner poor quality in different climatic conditions produce environments frequency drift caused treadmill phenomenon , so buy high frequency stability tuner to ensure system stability. custom lcd display Tuner band received signal is divided into VHF VHF (Very High Frequency) and UHF UHF (Ultra High Frequency) , the former for the frequency range of 30MHz-300MHz frequency band, which is the frequency range of 300MHz-3GHz bands. A tuner can receive only 1 channel cable TV signal , only with dual tuner LCD TV to be able to simultaneously receive two different television signals to be able to achieve two different channels of dual-screen display.

Response time

The response time of the LCD TV (response time) is a liquid crystal television is an important performance index , also called the response speed , the unit is typically milliseconds (ms), refers to the LCD TV input signal of each pixel reaction rate , that is, pixel from dark turn on or turn dark by the light of the time required . Since the liquid crystal in the display is driven by the voltage through the liquid crystal molecules resulting in deflection of different transmission rate, to achieve different degrees of light transmission and then to be composed of dots of different colors and then the entire screen , wherein the liquid crystal molecules is deflected by a voltage drive physical reaction process , take some time to complete, so the lcd module TV to get the signal in every point , the need for a certain time to change the yawing motion of the screen .

2013年11月3日星期日

Notes on the monitor selection

Note a : Refresh rate

The display refresh rate is a vertical scanning frequency ( field frequency ) , it refers to the second internal electron gun for scanning the entire screen frequency , in Hz ( Hertz ) as a unit . For the CRT display , CRT monitors image displayed on the phosphor is composed of many points, each phosphor point of the electron beam hitting the light, but the phosphor dot light emitting time is very short, so to constantly refresh the electron beam hit emitting phosphor of the continuing fight to make , but only refresh fast enough, the human eye can see sustained more stable picture , it will not feel the screen flicker and jitter , eye fatigue is not easy . So CRT monitor refresh rate in the relevant resolution of not less than 85Hz to make people more comfortable seeing .

And CRT display screen is divided into a number of the " scan line" to refresh the screen flicker problem occurs compared , LCD image is not generated by electron gun scans , but is controlled by controlling whether translucent light and dark , so the LCD refresh is entire screen is refreshed , LCD even at lower refresh rate ( eg 60Hz) , it will not appear flicker , image stabilization.

So, do not increase when adjusting the LCD refresh rate , using 60Hz (1024 × 768 resolution ) / 75Hz (1280 × 1024 resolution ) or ' default display adapter "button.

In addition, we must choose to install the appropriate "Monitor" drive , it should not use CRT display the word " Monitor" driver should be installed with the distribution of liquid crystal display driver , monitor or display properties "Standard monitor types" in the " laptop display panel (1024 × 768 or 1280 × 1024)".

Note two : Number of colors

As we all know , the current mainstream CRT color monitors are supported by 32-bit true color , but the LCD is not always the case. Entry on the market most of the liquid crystal panel LCD are used 6bit panel, which can display up to 262,144 colors (64 × 64 × 64 = 262144), and only 8bit panel can display 16,777,216 colors (256 × 256 × 256 = 16777216 ) . So adjust 6bit panel entry-level LCD will be displayed colors.

Note III: Viewing Angle

Display viewing angle is measured from different directions can clearly see all the content on the screen the maximum angle , CRT monitors viewing angle is theoretically accessible pan / tilt 180 degrees. Since the LCD is the use of light transmission to imaging, so the LCD viewing angle is smaller compared to a CRT monitor - in the LCD , direct and oblique light will penetrate the same pixel display area , so from the outside viewing angle greater than the angle will find that when viewing the screen image ghosting and color and so on .

Currently available level of a liquid crystal display ( left ) Viewing angle is generally 120 degrees, and the vertical (up and down ) to be slightly smaller viewing angle , 100 degrees or more in general . In use to get a better viewing angle, besides adjusting the angle of the display to minimize sitting or being outside of the LCD may be appropriate to increase the brightness of thelcm module , which also makes available the LCD viewing angle is maximized .

Note IV: Response Time

A liquid crystal display signal response time delay in response of the liquid crystal cell , is the molecular arrangement of the liquid crystal cell from one state into another state of molecular arrangement of the time required for the screen from dark to bright or dark by the light switch speed. Response time as short as possible , it reflects each pixel LCD monitor reaction rate of the input signal , the response time will generally be divided into two parts: the rise time (Risetime) and fall time (Falltime), whichever is expressed and the subject is not one-way .

The current mainstream lcd modules 25ms response time can do within the new mainstream models more in between 8ms ~ 16ms . = 1/0.025 = 25 ms display 40 pictures per second , has been able to meet the needs of video playback ; 16 ms = 1/0.016 = 63 frame per second display , has been able to meet most of the needs of the game ; 12 ms = 1/0.012 = 83 second display screen , but due to the restrictions 12ms LCD refresh rate 60/75Hz generally not up to 83 pictures per second . Therefore, the current mainstream LCD monitor is fully able to meet the general user DVD players and gaming needs.

Note five : Resolution

Traditional CRT monitors as long as the line frequency and bandwidth sufficient to stabilize the general support it supports the resolution of all stable full screen display .

The difference between hard screen soft screen

What is soft screen ? What is hard screen ? We distinguish between the method is generally light slip OLED Module screen , if there is a situation like waterlines are soft screen , if not that hard screen . IPS hard screen refers to a screen . Continue deep inside screen resolution , the LCD can display the basic principle is filled between two parallel plates in the liquid crystal material , the liquid crystal material is changed by the voltage of the row in the column internal molecular condition , in order to achieve the purpose of shading and light to show different shades , patchwork of images , but as long as the two flat plates coupled with three- color filter layer , you can achieve the display color images . The basic structure of hard and soft screen the rest is the same arrangement of the liquid crystal molecules .
Soft -screen liquid crystal molecules are arranged vertically , hard-screen liquid crystal molecules are arranged horizontally . As hard screen molecular arrangement structure is arranged horizontally so reducing delays of television , but the light leakage increases, in order to reduce light leakage in the screen of the external add a layer of optical film . This way, screen brightness will not have the soft screen brightness , so continue to make , to increase television back to increase the brightness of the backlight lamp , the results on the high power consumption . Since soft-screen liquid crystal molecules are arranged vertically , so layering is better, quality should be better.

Speaking of which almost everyone will understand it. I'll summarize the advantages and disadvantages of two kinds of screen 1 . Hard screen response speed faster than the soft screen ; 2 soft-screen consumes less than hard screen ; 3 soft-screen colors better quality ; 4 soft screen and hard screen , like the strength of the screen ,lcd module if someone tells you that it is hard screen is hard and firm, then this person is in the flicker you decide .

2013年11月2日星期六

Wireless transmission screen resolution

LAN in the family , TFT LCD Displays of television and computer 's wireless connection is that many users dream of big-screen viewing . End color TV manufacturers have introduced a " wireless transmission screen" , the user can arbitrarily laptop at home in any one location , via wireless transmission screen , you can operate on a laptop current contents display real-time synchronization on the flat-panel TV , which displays the contents including video, audio and other types of multimedia information .
LAN in the family , of television and computer 's wireless connection is that many users dream of big-screen viewing . End color TV manufacturers have introduced a " wireless transmission screen" , the user can arbitrarily laptop at home in any one location , via wireless transmission screen , you can operate on a laptop current contents display real-time synchronization on the flat-panel TV , which displays the contents including video, audio and other types of multimedia information .

The advantages of computer processing capacity, easy to operate, and easy access from the network a lot of video , text, pictures and games and other entertainment resources, but the computer's sound effects and screen viewing effect is much lower than the flat screen TV, wireless transmission screen technology just can fully combine the advantages of both . According to the relevant R & D engineers, users only need to download and install the appropriate computer terminal screen, wireless transfer client software , and then through the router to laptop and a TV set in the same network segment ;COG LCD Display Then turn on the TV screen in the wireless transmission capabilities and computer wireless transmission screen client software, find the current LAN television equipment , click "Start transfer screen" to complete the full pass -screen operation .

Identification of the merits of the nine elements of quality TV

1 chroma knob to minimum , adjust brightness, contrast, image clear and soft , structured.

2 Chroma knob tone, Character LCD Modules and from black and white to color images during the transitional period , there should not be confusion colors flow phenomena .

3 recall the clearest image, continue the rotation frequency tuning knob , the image becomes grainy distortion , frequency of self- trim switch is closed , the image should immediately restore clarity.

4 Observe whether natural color coordination .

5 Department environmental interference , the screen appear wavy , textured , stripes are not normal.

6 large volume adjusted , sweet sound without distortion .

7 to adjust the brightness , lcd 128x64 contrast knob should be obvious effect.

8 turn tilt preselector , the screen flashes only slightly .

9 off the power switch, the screen does not stay light band or spot .

2013年11月1日星期五

What is the digital TV display device

Digital TV display device is a digital television video signal for displaying a digital television system terminal equipment referred to,Graphic LCD Module also known as the digital TV display .

Indeed television display device is commonly known as the home of the TV. TV according to the display principle be divided into different types , the type of TV technology is now the mainstream with a cathode ray (CRT) tube televisions , liquid crystal (LCD) televisions , plasma (PDP) TV , an organic light emitting diode (OLED) TV machine and rear projection TV .

Wherein the cathode ray tube televisions and projection televisions are bulky type of TV , and LCD TV , plasma TV , an organic light-emitting diode TV is a smaller type of TV , lcm module also known as flat-panel televisions.

Why get dizzy watching 3D

3D images will enable people to enjoy the full sense of the scene image , but there are also eye fatigue , OLED Display feeling vulnerable and other issues. METI has decided to develop relevant standards , so that the image makers do not make too much emphasis on three-dimensional image .

3D TV imaging principle is to use shutter glasses were quickly closed, the left and right eyes see different TV screen. However, due to the existence of the phenomenon of persistence of vision , to watch 3D television programs , the human eye will feel "position some distance but overlapping screen ", which is caused by 3D " ghosting " and directly lead to " dizziness " is another factor .lcd module  And in a long time to watch a soccer match or a quick intense dynamic picture , dizziness, and fatigue caused by the degree will be intensified.

2013年10月29日星期二

Seven strokes teach you to love TV

Nowadays, LCD TV has become people's lives than the essential part , but also the highest of the highest frequency of use , and then how to care for the life of the " big plaything " may become the subject of great concern , the following let together we look at it, whether you are in life to cherish your TV like it !

1 do not readily "off" TV

Let us not waste energy, but to pay attention to weigh the power is turned on the TV Life. As we all know , the backlight for the LCD TV consumes all accessories in life the most serious one part , it and our home use fluorescent tubes are very similar .

So, it 's life and times also ignite a great relationship . Start when the warm-up and high-voltage pulse sputtering cathode electron substance increases, shorten lamp life. If you develop a habit of readily turn off the TV , four times a day to open computing , lamp life will be reduced to the original 1 /2.

(2) Avoid prolonged work

This one is not with the above considerations conflict . In the case of ultra-long work , the heat in the LCD TV accumulating inside the body , which is not enough for the other electronic components as much of a threat , but it is possible to burn the liquid crystal panel , thereby forming a large area of ​​dead pixels .

3 professional way to clean

Due to static reasons, LCD TV screen surface is very easy to collect dust . But clean water is a very unwise way to clean. First, the general effect is clean , and easy to leave water marks . More importantly, the liquid crystal is very easy because of moisture and cause permanent

Persistent damage ( If water droplets penetrate the screen , avoid electricity, let moisture in a warm environment slowly evaporate.

4 Avoid scratches, twisted or hit the surface of the LCD screen

Useful for many people pointing fingers on the screen of habit, this is irrelevant for CRT TV , LCD TV, but may cause fatal damage , but see themselves and their children and their toys , any impact on the LCD screen , scribing will bring direct damage, and most likely to make entire screen scrapped.

5 . Still images can also damage the LCD screen

At present, many LCD TVs with digital photo browsing, but for a long time for a picture display may cause damage to the LCD screen . When the machine is not used in a long time , to avoid the machine displays a screen point , best to turn off the machine . Although the LCD TV calories than CRT TV has been reduced a lot, but the problem is more LCD TVs degree temperature sensitive , long- uniform screen will display the fragile components to aging , which may or may not burn the TV screen , but it may TV will be more dead pixels. Only bad point is always a white or black pixels, can not be repaired . OLED Display To address this problem, some products specially set up display a still picture for too long, the TV automatically dimming feature to protect the LCD screen

6 Water is a major killer of the LCD screen

LCD TV on the humidity is very clear sense of its more stringent requirements for air humidity , if the humidity is maintained at 30 % to 80 %, and the LCD is working properly , but if the indoor humidity is higher than 80% ( southern region ) , LCD TV internal condensation might have occurred, this condensation phenomenon, may lead to leakage and short circuit LCD TV phenomenon , but also serious and even burned TV .

7 Do not disassemble repair LCD TVs

You can not own repairs to CRT TV , lcd module TV mechanical sophistication , as well as the fragility of the core screen LCD TV on the demolition of unauthorized become a TV that has the potential to cause more harm behavior , even a small metal shavings shedding can cause serious consequences. Meanwhile, LCD TV backlight assembly of some components will be about 1000 volts with a high pressure, this pressure can also cause damage to the human body .

About Digital TV

● What is digital television receiving equipment ?

Digital television receiving equipment is capable of receiving and decoding digital television signals digital system terminal equipment referred to, also known as digital television receivers.Character LCD Modules Existing digital television receiving apparatus has a digital television receiver ( commonly known as set-top boxes ) and digital TV coordinator two kinds.

Digital television receiver apparatus can work as a standalone device , the digital television may not act as a coordinator of the device to work independently , must be used in conjunction with other devices .

● What is digital TV display device ?

Digital TV display device is a digital television video signal for displaying a digital television system terminal equipment referred to, also known as the digital TV display .

Indeed television display device is commonly known as the home of the TV. TV according to the display principle be divided into different types , the type of TV technology is now the mainstream with a cathode ray (CRT) tube televisions , liquid crystal (LCD) televisions , plasma (PDP) TV , an organic light emitting diode (OLED) TV machine and rear projection TV .

Wherein the cathode ray tube televisions and projection televisions are bulky type of TV , and Lcd display modules TV , plasma TV , an organic light-emitting diode TV is a smaller type of TV , also known as flat-panel televisions.

2013年10月27日星期日

Bright dead pixels LCD TV

Light / dead pixels is also known as an LCD screen bright spots , is a kind of physical damage to the LCD screen , the main part of the screen is bright spots due to internal reflection plate by external pressure or slightly deformed due to heat .

Each pixel on the LCD screen has a red, green , and blue primary colors, mix them together so that the pixel to produce various colors. A 15 -inch TFT Lcd Modules, for example , the LCD screen size 304.1mm × 228.1mm, a resolution of 1024 × 768, each liquid crystal pixel consists of RGB color units. Pour the liquid crystal liquid crystal pixel is formed under the fixed mold "LCD box" , such " crystal box" in the 15-inch liquid crystal display device number is 1024 × 768 × 3 = 235 20,000!

A " crystal box" size is how much ? We can simple calculation : High = 0.297mm, width = 0.297 / 3 = 0.099mm! That is, in the area of ​​304.1mm × 228.1mm arranged under the dense area of ​​only 2.35 million 0.297mm × 0.099mm size "LCD box" , but also in the liquid crystal cell also integrates a single driver behind the liquid crystal cell drive tube . Obviously, this production process on the production line requirements are very high , with current technology and processes, but also can not guarantee that each batch of production out of the LCD screen is not bright / dead pixels ,OLED Display manufacturers generally avoid bright / dead pixels to separate LCD panels put no bright / dead pixels or little bright / dead pixel LCD screen high-priced supply of the strength of the manufacturers , and those bright / dead pixel LCD screen is relatively large number of small manufacturers generally low-cost supply of low-cost liquid crystal display device.

What is the real rear projection TV

Rear (rearprojector) is defined relative to the traditional front projection (frontprojector) purposes . One kind of projection and reflection principle under the guise of the screen and projection system in one of the television imaging system .

In the projection display device, its projection into orthographic projection display (frontprojection) and back projection in two ways. The most direct application is the orthogonal projection projector , the light is projected onto the screen in front of imaging .OLED Display Module The rear projection The principle is simply the projector installed in the bottom of the fuselage , the signal after reflection , projected onto the translucent screen behind imaging .

According to its internal use projector types can be divided into CRT rear projection , DLP rear projection (digitallightprocessor digital light processor ), LCOS rear projection (liquidcrystalonsilicon silicon projection ) , LCD (LCD) projection and so on. As the projector and screen as one, rear-projection TV users do not need the system optical adjustment , lcd module making it easy to use and greatly exceeded the front projector.

2013年10月25日星期五

Know the LCD panel

Is known , the liquid crystal panel is a liquid crystal display is the most important part. In addition, it is also one of the highest cost component . Although monitor color effect is not only because the quality of the LCD panel and take decisive action . But its display can not be ignored as a key part of consumers on the LCD panel had a strong interest.TFT Lcd Modules Coupled with the current wide variety of LCD panel , the average consumer wants to understand after each choose to buy products is not easy.
Understanding of the display had a friend , and must know the LCD panel on the quality of their display on the monitor display and the display itself has a direct impact on the cost . And as a larger viewing angle , color and grayscale performance better panel , wide viewing angle panel has been a lot of high-end users goal. Wide viewing angle panel appears to solve a color screen for the visual senses and demanding consumer problems.
The current LCD display products, mainly divided into two categories lcm module . They are the traditional TN panel , wide viewing angle (IPS / MVA / PLS) panel . Wide viewing angle panel can be said is the most popular consumer a panel , and TN is in the process of development has long been a successful universal popularity .

The advantage of LED TVs

Compared with the conventional LCD , LED LCD TV has the following advantages :

1 , ultra-thin : the thickness of conventional LCD TVs usually about 10cm , LED backlight mode which is more common on laptops , used in television, so that the body has a thin thickness leap .

2 , green energy : used in traditional LCD TV backlighting - CCLF cold cathode fluorescent lamps contain harmful mercury .Character LCD Display Although manufacturers find ways to reduce the mercury content of fluorescent tubes , but completely mercury fluorescent tube will bring some new technical problems . The LED backlight no mercury, in line with green fashion . Also very energy-saving LED backlight . Internal LED drive voltage is much lower than CCFL, power and security are better than CCFL.

3 , long life: different CCFL 's rated life ( half-light ) in the 8,000 to 100,000 hours. In order to enhance performance by improving the design of the CCFL backlight life will be lower . The LED backlight CCFL can reach about twice . Therefore, LED backlight life is usually longer than the CCFL .

4 , color gamut : in fact HD quality . According to the different light color , LED can be divided into white LED backlight and RGB-LED backlight. White LED technology, the main advantage is low power consumption , and RGB-LED backlight has the advantage of superior color performance . RGB-LED backlight high purity can be issued through red, green , and blue light LED devices , to achieve traditional CCFL light source can not reach a wide color gamut. The current mainstream RGB-LED backlight can already reached 105% of the NTSC color gamut , more powerful LED device performance can be achieved more than 120% of the NTSC color gamut.

For LCD TVs ,128x64 lcd display its unique use of liquid crystal molecules are arranged to control changes in external light imaging principle , the decision is the impact of the LCD panel display key advantages and disadvantages . Therefore, in the purchase of TV, the key indicators is to see whether this product is the choice of high-quality panel, LED afford absolute effect !

2013年10月24日星期四

About Smart TV Box

The so-called smart TV box , OLED Display refers to as smart phones, equipped with the operating system , and now the mainstream system Android, User can install and uninstall software , games and other applications to achieve " infinite content , unlimited application" of such TV. While traditional TV programs are watched are fixed and can not access the Internet , we can not control their own preferences with the consumer television program , does not have the content and applications can be loaded .
The concept of the rise of smart TV box for smart tablet PC , with the intelligent hot market for smart TV box brings new hope. Although the standard smart TV box has not come out - even their understanding of the concept has not yet unified . According to research , the current smart TV product box market is also hot up . Data show that the market for smart TV box level of awareness also significantly lower than other TV products.
According to IDC estimates , from 2011 to 2015 , China's smart TV box market CAGR of more than 60% ; to 2015 , about 90% of the TV will match the smart TV market capacity will reach 76 million units. But now many families can not immediately buy TV Smart TV market , but also enjoy the smart TV , just add a using Google Android (android) system for smart TV box , you can achieve the smart TV features . Accompanied by a huge market for smart TV , lcd module smart TV box corresponding market has also ushered in an explosive growth.

Daily electrical power small coup

Suddenly, quietly approaching summer , by the impact of summer , many consumers may choose to stay home rather than go out shopping in . At this time watching television , eating cold is really very cool . Here, the projection of the times we must also remind you that summer comes, electricity tariffs may also have increased. Take the flat-panel TVs ,TFT LCD Module  even the standby condition, one day off each will produce electricity.
Some residents convenience in order , do not pull the electrical plug , switch off the appliance only with a remote control , which is home standby phenomenon . This clean-up , the electrical although not running , but in fact there are standby power consumption . It is understood that each household electrical appliances in standby mode, power consumption is generally switched power for about 10% , about 5 - 15-watt range. If a family has a daily average of 56 units electrical plug sticking out , then they will just spend a day of electricity , a month is 30 degrees.
The role of a kilowatt inconsiderable , kilowatt make 25 watt bulb continuously lit 40 hours , allowing ordinary TV open 10 hours. If a power supply range from more than 170 million households meter users , in accordance with saving a kWh of electricity per day , a month is more than 5000 million degrees, almost the equivalent of an ordinary county province one month 's electricity consumption. So, starting from the details may energy saving.
Energy saving is not difficult, the user home appliances when not completely turn off the power ; using multifunctional socket with switch TFT LCD Module, in addition to outside the refrigerator , the front -click multi-outlet is connected to the switch will turn off the appliance can be a good achieve energy savings.

2013年10月23日星期三

How capacitive touch screen applications handle the noise problem

Touch screen device may in the day by many different noise sources, both internal and external noise noise is also included. Charger and monitor noise is a common problem in today's two most noise sources. As the market becomes more and more devices on the charging light, noise increases, the challenge will only become more difficult to manage. In addition, many other everyday objects will produce noise, causing interference, such as radio signals, AC power and even fluorescent ballasts. In the presence of noise, the low performance capacitive touch system reports position may be distorted, thereby affecting the accuracy and reliability.
Today's touch screen controller uses a variety of methods to improve signal to noise ratio, and filter out the bad from the noise in the data, these methods include on-chip high-voltage transmission signal generation, professional hardware acceleration, high-frequency transmitter, adaptive frequency hopping technology and Saturation control techniques. However, the touch technology continues to sustainable development,lcd module involving aspects include: how to use these features touch controller, how to dynamically adapt to the presence of noise in the system, and how changing environmental conditions and accurate touch tracking.
Injected noise impacts include large jitter (for non-mobile finger touch coordinates reported vary widely), but no finger touching the screen with a finger touch of false positives, do not report when the finger touch finger exist, and may even cause the device is fully lock and so on. If the touch-screen phone, for example, which means you can not unlock the phone (because you can not report a finger manipulation), or due to jitter or false touch while dialing a wrong number (the middle of the night like a friend's phone call, the result was wrong was allocated Boss, this problem is not small). Figure 1 shows the use of the market's best-selling smartphone finger tracking test results obtained (for example, using a finger to draw a circle). As the noise increases, the finger on the panel position reports (as shown in blue) to be wrong, and will detect errors in the panel of the touch (other colors shown).
How to deal with touch screen controller noise, will the quality of the user experience touch UI significant impact. Touch in noisy conditions, poor performance may result in customer dissatisfaction, thereby increasing the amount of return. COG LCD Display Since the difference between the various noise, touch screen controller to be able to detect, differentiate and respond to these noise, especially the two most likely cause of the problem noise sources: charger and display noise.

Concept of multi-touch technology

Multi-touch (MultiTouch) technology means that allow a user to control more than one finger at the same time by the graphical interface of a technology. With multi-touch technology corresponds to a single touch, single-touch device has a lot of years, and the small size of a touch-phones, TFT LCD Displays the most common is the large size of the bank's ATM machine and queuing kiosk.
Multi-touch display devices using advanced computer vision techniques to obtain and identify human finger position on the display screen, and by calculating a finger on the display screen is converted to physical coordinates of the logical coordinate of the computer screen and control instructions. To achieve with your fingers or other natural objects on the display screen of the touch options, open interface, convert images, information and other control functions.
From touch points up points, two points touch (more suitable for a user, and now also put on the market two touch normalized to the ranks of multi-touch), true multi-touch (for multiple users). Up points from the device size, a small size of individual multi-touch device, also has a large size for multi-touch devices people. Usually 20 inches as personal devices and multiplayer equipment demarcation point, apparently too many people use the equipment up is not easy.
A computer should be arithmetic unit, memory, controller, input - output devices. Conventional computer input devices are the keyboard and mouse, the output device is a display,20x4 lcd display and multi-touch computers and traditional computers is that it differs from the input and output are all concentrated to the monitor, you enter the command on the monitor while the computer will The results reflected in the display. In the prior art, the multi-touch technology used in display devices are LCD, rear projection displays. Such as holographic display devices like sci-fi movies and still remain in the scientist's laboratory.

2013年10月22日星期二

LCD large screen display wall installation

LCD large screen display wall manufacturers in addition to producing products, mostly have a professional construction team. Most manufacturers will have a dedicated installation team, because if it is for contractors to do, and users will have barriers , can not really understand the user's actual needs.
During the installation process , generally the use of environmental special attention. Environmental temperature and humidity and the size of the space before installation is the first note .TFT LCD Displays It is understood , DLP screens are mostly made ​​of resin , so they need a stable environment , temperature and humidity , respectively, at 25 ° and about 65% for the best , the temperature is too high , given the principle of thermal expansion and contraction , the screen easily from the package . The LCD uses a LCD screen, so there is not much impact on its temperature and humidity . And DLP rear projection unit 1.5 m thick box, the installation requires a distance from the wall , but some use of the environment is not good , so the box is not very good heat dissipation ,4.3 TFT display module it is recommended that users install air conditioning , to ensure product life.
In addition, the installation site surface roughness and dust will affect the results.

Large-screen LCD splicing manufacturer's recommended options

LCD splicing screen because of its slim body of the screen and become trendsetting new tiled display technology in recent years, with LCD screen (LCD) is a large screen splicing unit systems , large-screen monitor in the field of application of growing interest , the LCD screen the relevant parameters to improve , with low power consumption , light weight , long life ( generally work more than 50,000 hours ) , with no radiation , screen brightness uniformity , bright color , etc., and splicing gap narrowing , reaching unilateral fight seam minimum 6.7mm, increasing the price decline for industrial control , information distribution , video surveillance and other fields of ultra-narrow LCD display wall system is relatively low construction cost , which is the LCD display wall system came into being inevitable reasons . Here we will give you detailed instructions from several aspects :
Display size selection
DID Narrow lcd module system with 40-inch and 46 -inch two specifications.
First , the height and width of the room from the counting .
For example, a reserved area for the indoor display wall : width 8.8 m , height 3.2 m .
First with a height of about 1 meter minus the bottom support height , 3.2 m -1 m = 2.2 m .
Next, select the display size from the display height , 16:9 display specification , 40 -inch height is generally 520 ~ 550mm, width is generally 910 ~ 950mm, 46 -inch General 600 ~ 630mm, width is generally 1040 ~ 1080mm.
Based on the basic dimensions we compute the stacked layers, 40-inch : 2200 ÷ 550 = 4, up to four layers , 46-inch : 2200 ÷ 630 ≈ 3.5, rounded up to 3 layers. With us to confirm the display width , 8.8 m is the net size of the room , the area should be displayed with the middle part , need to subtract both sides of the door or decorative width of at least 3 meters , width of the wall up to the reality that is 5.8 meters, which when the arrangement of the display can be calculated since the number of 40-inch : 5800 ÷ 950 ≈ 6.1, rounded up to 6 ; 46 inch : 5800 ÷ 1080 ≈ 5.4 rounded up to 5 .
Thus, in theory, scale stitching came out : 40 -inch , 4 × 6; 46 -inch , 3 × 5.
Next, we will choose it. 40 inch for selection : 2 × 2,2 × 3,2 × 4,2 × 6,3 × 2,3 × 3,3 × 4,3 × 6,4 × 4,4 × 6; 46 -inch applicable select : 2 × 2,2 × 3,2 × 4,3 × 2,3 × 3,3 × 4,3 × 5.
If it is a large screen video monitor screen display along the entire image or a dispatching room high-resolution image display is recommended to choose the right size , usually , 2 × 2,3 × 3,4 × 4, because it is a 16:9 display screen, so the general principle of choice is the number of columns ≤ rows , or graphic prolate type display .
If only single-screen display , no combination of zoom display purposes , and its size can be spliced ​​according to the maximum size of the design .
This example ,low temperature 160x160 lcd a more appropriate choice entire wall is : 3 × 3,46 inch ; 4 × 4,40 inch .
Choose one of the two best principles generally follow the same general area , the large size priority on the grounds that the large size of a small number of splicing gap , the overall style is more concise .
Another option is that in the same plane, the number of the display screen to do more , is generally used in a large number of video surveillance applications.

2013年10月9日星期三

Factory network video surveillance system design

System Overview
In recent years, the popularity of the network and deepen in our development, enterprise information construction continued to deepen, enterprises are gradually turning to focus on the use of network and computer management, production , sales, lcm module logistics , service and other important stage of large amounts of data . All walks of life have accelerated the construction of information network platform , most companies have been or are laying computers within the enterprise LAN ; Meanwhile, the network has become an emerging advanced applications provide a good platform. In the modern business management, as security requirements increase, the monitoring system plays an increasingly important role , the existing and network systems to be built together with the monitoring system can not only minimizes renovation project cycle , while avoiding duplication of investment funds and improve the network resource utilization.
In the modern enterprise development process , in addition to establishing a comprehensive, scientific and effective management system and incentive mechanism, establish a comprehensive network video surveillance system factory obvious increasingly necessary . Factory plant a larger scale, complex production and management departments , require high safety factor . Among the many workshops, logistics channel , special outdoor areas and functions to achieve on-site monitoring and dispatching a combination of production , will greatly improve the level of intelligent management of the factory . Therefore, in the factory installation of a network video surveillance system has always been essential to many production companies or factories administrative measures. Shenzhen Wave-particle Technology Co., Ltd. graphic lcd display module provides a full range of professional network video surveillance system equipment for plant monitoring system solution designed with rich experience.

With mobile communication technology to achieve remote monitoring of coal mine production safety

Large screen mining safety monitoring system using mobile GPRS network and CMNET ( mainly various fixed bearer network data services ) for networking , the coal mine safety monitoring terminal production information collected sent ( network control center ) GPRS core network , network management center GPRS core network for coal mine safety monitoring in the identification number of proprietary , through CMNET and hosted on a server connected to the mobile network . Access to the Internet at all levels of the monitoring center through its web site can be specified on each coal mine production safety information . lcd module In mine safety monitoring system communication module configured mobile SIM cards , using a dynamic IP address allocation , enabling data transfer monitoring center to reach remote monitoring purposes.
Safety monitoring system is being updated in real time on the big screen with the mine gas , carbon monoxide, wind speed, temperature , vacuum and other safety data information to assist all levels of real-time control of coal mine safety management of coal mine safety production. Alarm occurs regardless of which coal mines , coal mines will quickly fed back to the system causes excessive gas , the need to immediately stop production and how to eliminate the hazard and other relevant information . This information appears in the relevant administrative bodies at the same time , will also be sent via SMS to the relevant responsible person on the phone , until the danger has passed . "The regulatory authorities for safety monitoring center if it is a live coal industry oversight , largely excluded from the hidden mines dangerous job ."
Mine has been fully installed the security monitoring system. "In mine uses GPRS monitoring system, have a better outlook of coal mine safety precautions. Give each of the miners in underground work with on the GPRS positioning system, so not only can keep abreast of the progress of work in the underground miners degree , OLED Display but can also after the miner danger accurately implement the rescue , allowing monitoring system on a pair of equal length ' clairvoyant ' .

2013年10月8日星期二

The basic technology touchscreen

Absolute coordinate system
The touch screen is an absolute coordinate system , which is characterized by the current position coordinates and the location coordinates of no previous relationship , lcd module each touch data through the calibration is directly converted into screen coordinates . No matter what the circumstances, the touch screen coordinate system on the same point set of the output data is stable . However , it does not guarantee the same point each time the touch samples are the same, that can not guarantee the absolute coordinate position, which is called drift .
Locate
Rely on a variety of touch screen sensors to work , and even some touch screen itself is a set of sensors. Their respective positioning principle and the respective sensors used determines the touch screen response speed,lcm module reliability , stability and longevity .

Resolution LCD splicing screen brightness difference

Currently large-screen LCD display area is a popular product , I believe most users of Samsung's latest 7.3mm Ultra Narrow splicing screen is not strange, but it comes to the mosaic screen 7.3mm ultra-slim bezel there 700cd/m2 with 450cd / m2 of the points, most people would likely confused .
The brightness of the LCD screen is determined by the LCD panel , and currently in the country, can not produce LCD splicing screen panel that last year the first domestic production of LCD panel production line ,20x2 oled display BOE 6.5 generation line can only cut 37 inches below the LCD panel for small-size LCD TV and computer monitor. So that no matter which one you choose manufacturers of LCD splicing screen , as long as the other is Samsung 's LCD panel , brightness, contrast and other parameters are hard we can not change . So before you choose , be sure to choose according to their needs different brightness LCD splicing screen .
For now, using Samsung LTI460AA04 (700cd/m2) lcd module with LTI460AA05 (450 cd/m2) LCD panel LCD splicing screen, in the direction of the main application and the two products are not essentially different . However, due to different application environments require different brightness for large screen leaving the two products in specific applications generated on nuances.
Generally, people's eyes for the brightness tolerance is limited , if the light is poor small space, if brightness of 700cd/m2, the human eye is likely to be burned ; However, if the majority in bright outdoor space such as square , street , display brightness if 450 cd/m2, then the image will be blurred for people in terms of . Therefore, I propose that users buy products should be based on their actual application environment , but also in the light somewhat less space is more limited range of places LTI460AA05 applicable , by contrast , the vast space lit LTI460AA04 become preferred .
In addition, Ultra Narrow LCD splicing screen , its optimum operating temperature is 39 degrees Celsius and a relative humidity of 90% in the control area of ​​the largest of its best working condition . The higher the brightness of the LCD splicing wall they emit more heat , if the heat is not in place, causing light display greatly reduced , can also cause serious damage to the LCD video wall , affecting life. In terms of users , should be considered in the choice of products to their actual ability to operate .

2013年10月7日星期一

Large-screen LCD splicing bring convenience for public spaces

LCD splicing rapid development for airports, subways, train stations and other places of these overcrowded public transport , safety monitoring and flight , train schedule information in real time , clear and accurate display , are extremely important. Narrow ,COG LCD Display ultra-narrow , seamless stitching large LCD screen can be a good solution to these problems.
LCD splicing screen application analysis :
1, the safety monitoring : surveillance video wall is mainly to solve the centralized control of multi-channel signal display on multiple screens assembled splicing , on the same platform , real-time computer images, video images mixed display , which can be single-screen display separate images, stitching software can also be achieved through multiple screens to enlarge images mosaic display , means flexible , fully meet the demand for the use of video surveillance .
2 , information display areas:
3 , real-time , clearly show the flight information and train schedules, in the rush hour every passenger can choose according to their flow travel time and ease congestion ;
4 , you can display weather and other convenient information to the majority of the passengers more convenient ;
5 , in addition, the narrow - ultra-narrow large-screen display can also transport these high traffic sites for various advertising and information campaigns ,320x240 lcd module so that opportunities everywhere !

LCD liquid crystal

LCD projection technology since the 1990s , led by the Japanese projection technology, its development works like slide projector, high brightness halogen bulbs by the Department , the irradiation LCD panel , and then the image through the panel , after the projection lens and the focus group enlarge image, display the image projected on the screen , the projector has three LCD panels inside each piece are responsible for RGB three -color imaging, this three primary colors overlap images and projected through a color image. LCD projection technology projection process is mainly the light bulb through the filters, beam splitter , and then refracting lens at the image projected onto the screen. LCD projectors projector market is currently the main product. LCD is between liquid and solid material between itself does not light , nature of work greatly affected by temperature , the operating temperature of -55 degrees to +77 degrees . The liquid crystal projector of the photoelectric effect , the liquid crystal molecules changes in the electric field , the liquid crystal cell affect transmittance or reflectance , thus affecting its optical properties , generating a different gradation and color images. LCD projectors better color reproduction , resolution up to SXGA standard , small size , light weight, operation is extremely easy to carry , and relatively inexpensive . Character LCD Module technology currently focused on the core technology and SONY EPSON two .
LCD projection for the current relatively mature technology, but due to the performance of the product characteristics , in the face of DLP, LCOS competition, have the following major technical problems to be overcome :
" Lack of brightness : Due to limited aperture ratio , the light utilization is low, in addition monolithic coupled with color filters absorb light source , the light utilization below 10% , so the brightness is still much room for improvement , the current vendor to increase the chip size to overcome .
" Black and white contrast : LCD liquid crystal because of its development have leaked and, therefore, can not make a true black , black and white contrast is poor will affect the quality of three-dimensional, which must be arranged by the LCD to improve the shading effect , this is the family video application is very important.
" Heat problem : Due to the high intensity halogen bulb temperature is high , the heat lamp life problems of a big influence .
"LCD itself, the physical characteristics of the decision of its slow response , over time , performance declined in 1995 by Japanese companies led by LCD manufacturers developed a polysilicon (Poly-silicon) technology , making the projection display systems have more choices . polysilicon (Poly-silicon) technology uses cylindrical lattice , and the TFT LCD Displays on the front plus a set of micro- convex lens , the light is converted into the mirror parallel to the cross of light , this would resolve the crystal silicon optical transmittance of LCD technology problem of low efficiency , the light transmittance rate of 95% , so the same light conditions , improved brightness.

2013年9月27日星期五

LCD splicing screen installation

As good color LCD splicing screen electronic manufacturers in addition to producing products, mostly have a professional construction team. Most manufacturers will have a dedicated installation team, because if it is for contractors to do,OLED Display Module  and users will have barriers, can not really understand the user's actual needs.
During the installation process, generally the use of environmental special attention. Environmental temperature and humidity and the size of the space before installation is the first note. DLP mostly made of resin screen, so it is necessary to have a stable environment, temperature and humidity, respectively, at 25 ° and about 65% for the best, the temperature is too high, given the principle of thermal expansion and contraction, the screen easily from the package.

The use of the DID lcd module splicing screen, so it has little impact on temperature and humidity. And DLP rear projection unit 1.5 m thick box, the installation requires a distance from the wall, but some use of the environment is not good, so the box is not very good heat dissipation, it is recommended that users install air conditioning, to ensure product life.
In addition, the installation site surface roughness and dust will affect the results.

2013年9月26日星期四

LCD Video Wall Display size, how to choose

In the large-screen display market, the LCD splicing wall display unit by virtue of its slim body of the screen has become a trendsetting new tiled display technology to the LCD screen (LCD) for the splicing unit rapid rise of large-screen system, on the big screen Monitor fields has been widely used, making LCD Video Wall screen gradually attracted much attention. As more and more manufacturers invested in this technology, LCD screen parameters gradually improved, low power consumption, light weight, long life (generally work more than 50,000 hours), with no radiation, the screen brightness uniformity, bright color, etc., and splicing gap is gradually narrowing, gradually reduced from 7.6mm to today's patchwork of bilateral total 5.3mm, prices are declining day by day, the price continues to improve. However, for industrial control, information distribution, video surveillance, entertainment and other fields bars slit LCD Video Wall Display System requirements relative to lower construction costs, it also makes an excellent cost-effective ultra-slim bezel graphic lcd display module Video Wall Display System should be shipped Health. How to choose their own splicing program, but also of great concern to the user, the following example for you to simply explain:
LCD Video Wall Display size selection
5.3mm Ultra Narrow LCD Video Wall Display System is now mainly a 40-inch, 46-inch and 55-inch two specifications. We can according to project requirements, the height and width of the room began to start counting:
For example, a room LCD tiled display wall reserved area is: W 8 .5 m, height 3 .1 m: a first step, with a height of about 1 m minus the bottom support height, 3.1 m-1.1 m = 2.1 m; access down from the display highly selective display size, display size 16:9, 40-inch is generally 910.2mm (W) × 520.8mm (H), 46-inch General 1025.7mm (W) × 579.9mm (H), 55 inch general 1215.3mm (W) × 686.1mm (H).
Then, according to this basic dimensions we calculate the number of layers stacked: 40-inch, 2100 ÷ 520.8 ≈ 4.0, rounded up to 4 layers; 46-inch, 2100 ÷ 579.9 ≈ 3.6, rounded up to three layers; 55-inch, 2100 ÷ 686.1 ≈ 3.0, rounded, the maximum three layers; Next, we want to confirm the display width, 8m net size of the room, the area should be displayed with the middle part, need to subtract both sides of the door or decorative width of at least 3m, that is the reality of the wall width at most 5 .5 m, since you can then calculate the number of monitors arranged, 40-inch, 5500 ÷ 910.2 ≈ 6.0, go to an integer, a maximum of six; 46-inch, 5500 ÷ 1025.7 ≈ 5.4 , rounded up to 5; 55-inch, 5500 ÷ 1215.3 ≈ 4.5, rounded, up to four.
Thus, in theory, splicing out the scale: 40-inch, for up to 4 × 6; 46 inches, the maximum of 3 × 5; 55 inches, a maximum of only reach 2 × 4.
Next, we will choose it. 40 inch to choose the applicable size: 2 × 2,2 × 3,2 × 4,2 × 6,3 × 2,3 × 3,3 × 4,3 × 6,4 × 4,4 × 6; 46 inch can select the following scale: 2 × 2,2 × 3,2 × 4,3 × 2,3 × 3,3 × 4,3 × 5; 55-inch size, then have the following options: 2 × 2,2 × 3,2 × 4,3 × 2,3 × 3,3 × 4.
If it is a large screen video monitor screen display along the entire image or a dispatching room high-resolution image display is recommended to choose the right size, usually, 2 × 2,3 × 3,4 × 4, because it is a 16:9 display screen, so the general principle of choice is the number of columns ≤ rows, or graphic prolate type display.
If only single-screen lcm module, no combination of zoom display purposes, the size of its LCD Video Wall can design according to the maximum size.
This example, a more appropriate choice LCD Video Wall is: 3 × 3,55 inch; 4 × 4,40 inch.
Choose one of the two best principles generally follow the same general area, the large size priority on the grounds that the large size of LCD Video Wall gap small number, the overall style is more concise.
Another option is to, on the same plane, select the number of multi-unit LCD Video Wall displays, video surveillance is generally used in a large number of occasions.
More than just a simple case illustrates, the user can according to their own projects, the number of display units such as integrated aspects of requirements and cost themselves a rough calculation, to choose the most suitable for their own projects LCD Video Wall solutions.

2013年9月25日星期三

LCD large screen system basic functions

Traffic violations business processing functions : The system can manage a variety of illegal information , including illegal information entry , query, modify , multi-level audit check function to ensure the effectiveness of illegal evidence , but also to manage the illegal fines , and the bank account ;
Traffic information collection , statistical analysis functions : The system offers a variety of implementation of traffic data, such as traffic flow, speed , time share, share space ,mini lcd module time headway , traffic density , etc., while front-end systems based on vehicle information acquisition device fed back to the large amounts of data , the use of the unique system of integrated treatment based on geographical environment , the ability to analyze traffic data , obtained real-time traffic status , provide visual traffic management decision support information ; video surveillance capabilities : The system uses SVG and GIS technology, and road combined with real-time traffic conditions , by looking at the monitor intersection and road real-time video , reflecting the global , intuitive , real-time traffic conditions ; same time , the system can record the situation of road traffic for traveling time to provide video evidence of traceability ;
Surveillance management features: real-time surveillance site bayonet , alarm management , multi-level "blacklist" Management , found that " blacklist" real-time vehicle alarm ;
Device Remote Management function: panoramic electronic map, the entire region could reflect real traffic enforcement equipment digitization ( including digital cameras, camcorders ,lcd graphic display control panels, vehicle inspection and other components ) working status ; analog and digital system integration functions: using the Internet to achieve a video information , monitoring information network sharing service , will the existing monitoring systems and computer networks are combined in the entire network monitoring system to expand the application space .

did the LCD screen in the traffic control center application solutions

Electronic Police System Command Center is the electronic police system of the brain , while the command center did lcd 128x64 platform is the eyes of the entire electronic police system , the electronic police the whole system plays an irreplaceable role.
Command Center did LCD display platform effect or not, related to the entire electronic police system program success . The platform is able to display clear, accurate and truly reflect the front-end video signal , electronic police system also is an important criterion for good or bad quality .

With LCD technology, now did gradually replacing the traditional LCD DLP mosaic , CRT TV wall , so large-screen rear-projection is a general trend . LCD splicing technology has many advantages : clear display , LCD monitors , stable quality, large screen LCD splicing long working life , after-sales maintenance , low cost, quick and easy installation , simple and easy to control , flexible combination of splicing sizes . For example, specialized in the production of LCD splicing screen , in 2008 ago , CRT monitors throughout the company's market share in the absolute proportion , in recent years , did far more than shipments of LCD screen CRT monitor . With CRT upstream firms adjust product lines , did the LCD screen will dominate the situation .
In recent years, more and more electronic police system command center at the beginning of construction or upgrading , the preferred system for high-definition lcd module screen did the police chain of command as an electronic display device .

Ultra Narrow LCD screen highlight the pursuit of

LCD splicing screen combines modern advanced power electronics technology, LCD technology, embedded hardware-splicing technology, multi -screen image processing, signal switching technology , machinery manufacturing as a whole . These organic combination of several technologies , to produce the LCD splicing screen display system products , in the fierce competition in the market fully reflects the strong competitive advantage. Ultra Narrow design professional LCD panel products, but also prominent features , and these features is exactly what users need to pay attention when choosing the core content . Introduction to the traditional ultra-narrow lcm module splicing has been reborn reborn , but also to the LCD splicing out of the patchwork too embarrassing .
Whether it is ultra-narrow frame design will directly affect whether the user is using this LCD splicing screen display solutions . The use of LCD backlight lamp as a light source , its edges generally wide , 46 inches LCD screen its common border width exceeding 30mm, if used for stitching, then splicing gap of at least 60mm, which would seriously affect the visual effects, the user can not acceptable. If you use the LCD screen did this unique ultra- narrow design , 55 -inch LCD splicing screen patchwork minimum only about 5.7mm, fully able to ensure a complete presentation screen. Ordinary civilian LCD TV or PC screen compared Ultra Narrow LCD stitching design professional LCD screen has a higher brightness. Ordinary civilian LCD TV or PC screen brightness generally only 250-300cd / m² (≤ 42 〃 ) and 400-500cd / m² ( 46 〃 ) , and professional narrow design of the LCD screen brightness can reach 700-800cd / meters ( 46 〃 ) . With LED backlight applications, large-screen brightness to the next level , reach 1800cd / sqm. Such a high brightness , low brightness, and can guarantee outdoor environments , the image is still clearly visible.
Currently, the normal LCD and CRT display device color saturation of only 72 %, while the ultra-slim bezel design professional TFT LCD Module splicing screen can be up to 92 percent of high color saturation , thanks to a newly developed color calibration technology, through this technology , in addition to still images for color calibration, but also on the dynamic screen color calibration , so as to ensure accurate and stable image output .

2013年9月24日星期二

Large screen manufacturers brand development is the mainstream

At present , the domestic Ultra Narrow LCD splicing system the main technology manufacturers are concentrated in the hands of foreign countries , resulting in the domestic market is flooded with assembly machines , product homogeneity serious, in this case , how to grasp their brand positioning in order to achieve brand value and have their own advantages to develop marketing channels is the current mainstream big screen manufacturers to develop the direction of development .
Homogeneity in all competitive industry are likely to occur , the lcd module splicing homogeneity within the industry is mainly homogenous liquid crystal panel , but the panel is not equivalent to the homogeneity of the homogeneity of splicing systems , in fact, because the level of technology, manufacturing quality control, differences in levels of production , LCD splicing market products in quality , there are very different , with the upper panel displays superior resources and have long experience in the production of the vendor's products quality and more reliable.
DID Technology technicians Tangxiang En said: "The 46 -inch LCD panel production line investment is huge, requires huge capital investment, research and development costs greater worldwide manufacturers do not have much , but this market in China has been investing overdose ; domestic the strength of the enterprises do not need self-built LCD panel production line, you can deepen their own image processor chip R & D , and Apple phones similar , even if the screen , and many other hardware products are not their own production, but can also make high-quality products . "
Development of market channels to be combined with manufacturers to their own characteristics , the ultimate aim is to achieve win-win complementary vendors and channels together for the vast number of projects and provide customers with better products, more convenient access and more attentive service .
Currently TFT Lcd Modules splicing industry infighting makes good and bad quality of products on the market , many small and medium enterprises in the service can not keep up , the lack of systematic application development and implementation of the solution is poor , allowing customers to choose products face greater risk ; another vicious price competition makes the whole industry is in profit or even negative interest is not conducive to the LCD splicing overall industry 's healthy development. But the fierce market competition will make those who pay attention to brand , technology, products and channels, enterprises gradually grow , liquid crystal display market in the future , those who have a complete industrial chain advantage , continuous technological innovation, overall service ability, the ability to customize client solutions strong manufacturers will be the ultimate winner.
Brand positioning and value realization requires a long time to see results , you can use market segmentation approach to the delineation of the scope of their markets and increase their brand added value. In fact, the large-screen display system now has presented brand development trends, industry threshold is gradually improving , large-screen enterprise wants to become bigger and stronger , and in the fierce competition, brand development is the only one can go road.