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.