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 .
000
2013年12月30日星期一
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.
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 .
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 .
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.
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.
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.
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 .
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 .
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