In the purchase of Graphic LCD
Display TV, in addition to often see the screen size, resolution, brightness, contrast, response time specification parameters, often we will find that there is a word called "Colors." Different brands and models of LCD TVs for the description of the number of different colors, the corresponding figure is night and day to another, some marked only 16.7 million, some labeled as 1 billion, as well as a more exaggerated marked as 28.9 billion. So, what these numbers represent what the meaning behind its products can reflect much difference between it?
LCD TV can show a number of colors by what factors determine it?
First, we have to be cognizant of two completely different concepts, one is the LCD panel can show the number of colors, an internal circuit is capable of handling the number of colors, both of which are related to the lcd modules TV can be displayed delicate color gradation extent.
LCD panel can show the number of colors
LCD panel can be expressed by the number of colors inherent physical characteristics of the panel decision. According to the basic principle of the liquid crystal display image, the liquid crystal molecules by two glass substrates attached to the upper and lower driving voltage between the occurrence of the corresponding deflection angle, the light through the liquid crystal layer when the angular deflection according to the size of the liquid crystal to obtain different levels of transmission, the This is reflected in the panel have different levels of gray scale contrast. When light passes through the liquid crystal layer needs through the filter, the filter corresponding to each pixel is divided into red, green, and blue small squares, the original white light from these small squares separated out after filtration , the entire panel can present a variety of colors, which is colorful screen display panel simple principle.
LCD driving principle
The liquid crystal panel of the full color image forming process
From the above description it can be seen, the panel can be expressed by the number of colors of the liquid crystal drive deflection angle of the degree of sensitivity. Assuming deflection voltage variation and LCD is divided into 256 steps, then when the voltage generating a step change in the liquid crystal along the angle of deflection of an order, so the panel can show a color change of order; However, if the voltage to produce a step change When the liquid crystal molecules did not produce a corresponding first-order angular deflection, then no one step on the performance of the panel color changes.
Therefore,OLED Module there is a liquid crystal panel, the number of colors can be expressed concept, which is determined by the panel of the innate physical properties. As in the display people tend to care about what is TN panel or a VA panel, largely because TN panels can be demonstrated by the number of colors as rich VA panel, showing a level of less than VA panel screen delicate vivid. Of course, the above description is idealized assumption, I just hope that this can be expressed in a more intuitive and easier to describe the problem.
color lcd display module
color lcd display module
2013年11月6日星期三
Plasma maintenance Cheats
With the current plasma TV technology updates, and more friends to buy a plasma TV, especially like to see blockbusters and friends to play the game even more keen on plasma TVs, lcd module plasma TVs this is because the technical advantage. Here I explore with you when maintenance Plasma TV will pay attention to.
1 Remember to avoid the heat, tide, dust
High-power plasma TV is well known, so we must ensure that its cooling effect, or if improper cooling on plasma screens will cause fatal injuries, and even burned. When the TV is turned on items not covered in the machine, and pay attention to ventilation. Resting period of time to pay attention to every clean dirt, dust and static electricity to prevent this "invisible killer", and to pay attention to moisture.
2 Avoid long-term fixed image
Early plasma products in a long time after use prone to the phenomenon of localized scorch the screen, so the screen long stay in a screen, just like people do not quite work and no rest in each state of the plasma chamber shine long the same circumstances, the screen will stay on the screen like a shadow lingering. So be sure not to let the long-term plasma TV on the same screen freeze, to avoid such irreparable damage.
3 Wipe the screen to be careful
On the screen by the electrostatic attraction of dust is inevitable, we often want to clean the screen. But did you know that if improper cleaning can also cause damage to the screen, and then to the quality of the effects regret. First, wipe the screen not too often, and the best special screen cleaning material or soft cotton cloth. Also, lcm module do not use chemicals to clean, otherwise it will damage the screen surface is used to enhance the effect of the oxide protective film screen. Water is not very good cleaners, because it will leave water marks on the screen. It is preferable to use a plasma screen cleaner.
4 Remove TV technician to please
If you need to remove plasma TV, be sure not to do it yourself. Because you do not know what parts more critical components, damage to yourself once a key component will cause TV Mishap, so then may outweigh the need to replace parts. And with the high-voltage plasma screen is, and very easy to dismantle an electric shock, this is closely related to life events. Refrain from reckless act.
1 Remember to avoid the heat, tide, dust
High-power plasma TV is well known, so we must ensure that its cooling effect, or if improper cooling on plasma screens will cause fatal injuries, and even burned. When the TV is turned on items not covered in the machine, and pay attention to ventilation. Resting period of time to pay attention to every clean dirt, dust and static electricity to prevent this "invisible killer", and to pay attention to moisture.
2 Avoid long-term fixed image
Early plasma products in a long time after use prone to the phenomenon of localized scorch the screen, so the screen long stay in a screen, just like people do not quite work and no rest in each state of the plasma chamber shine long the same circumstances, the screen will stay on the screen like a shadow lingering. So be sure not to let the long-term plasma TV on the same screen freeze, to avoid such irreparable damage.
3 Wipe the screen to be careful
On the screen by the electrostatic attraction of dust is inevitable, we often want to clean the screen. But did you know that if improper cleaning can also cause damage to the screen, and then to the quality of the effects regret. First, wipe the screen not too often, and the best special screen cleaning material or soft cotton cloth. Also, lcm module do not use chemicals to clean, otherwise it will damage the screen surface is used to enhance the effect of the oxide protective film screen. Water is not very good cleaners, because it will leave water marks on the screen. It is preferable to use a plasma screen cleaner.
4 Remove TV technician to please
If you need to remove plasma TV, be sure not to do it yourself. Because you do not know what parts more critical components, damage to yourself once a key component will cause TV Mishap, so then may outweigh the need to replace parts. And with the high-voltage plasma screen is, and very easy to dismantle an electric shock, this is closely related to life events. Refrain from reckless act.
2013年11月3日星期日
How to solve the mosaic screen Huaping phenomenon of aging and
LCD splicing screen because it is easy to work long hours to make certain pixels overheating, once more than the limit will lead to permanent damage , which formed often say " dead pixels ." Since Character LCD
Module splicing screen pixel is constituted by the LCD , so when the full load continuously for 96 hours or more , it will accelerate to its aging , even when serious burn. So, if you must work long hours , it is best able to let it rest for a while intermittent , or often in different time intervals to change the screen contents appear , because the state is waiting for work to reduce the brightness , or in screen saver mode operate under a will , which require little effort not only retard aging of the LCD screen , and avoid hardware damage occurred .
In addition , LCD whether any problems , prohibit self- assembled LCD splicing screen ( special is especially interested in the general DIY ) , once the LCD splicing screen is not working properly you can find vendors to help solve. Since the LCD backlight assembly transformer off after a certain time is still possible with the 1000V high voltage ( albeit micro-current ) , not specialists if not handled properly may result in failure of the new component .
Moreover , COG LCD Module screen is very fragile delicate, impact resistance is poor. This is because the LCD contains a lot of precision glass element and agile delicate electrical components , once subjected to strong shock will cause the LCD screen , and other related components damaged. So be sure to avoid strong impact shocks. At the same time , but also pay attention not to exert pressure on the LCD screen surface , such as a screen with a finger pointing the site , it is very likely to cause dead pixel number of moves.
Besides, if find LCD splicing screen surface dirt , accurate method should be used to remove dirt . It is best to use a medium soft, non-fibrous material, such as cotton , lens tissue or a soft cloth, and then gently wipe stained with a little glass cleaner , prohibit the use of alcohol, a class of chemical solution , nor can the rough cloth or paper items , as these substances prone to scratches. Here to remind everyone that , do not spray cleaning agents directly to the surface of the screen appear , it is very easy to flow inside the screen causes the OLED Display screen internal short-circuit fault , resulting in unnecessary losses.
In addition , LCD whether any problems , prohibit self- assembled LCD splicing screen ( special is especially interested in the general DIY ) , once the LCD splicing screen is not working properly you can find vendors to help solve. Since the LCD backlight assembly transformer off after a certain time is still possible with the 1000V high voltage ( albeit micro-current ) , not specialists if not handled properly may result in failure of the new component .
Moreover , COG LCD Module screen is very fragile delicate, impact resistance is poor. This is because the LCD contains a lot of precision glass element and agile delicate electrical components , once subjected to strong shock will cause the LCD screen , and other related components damaged. So be sure to avoid strong impact shocks. At the same time , but also pay attention not to exert pressure on the LCD screen surface , such as a screen with a finger pointing the site , it is very likely to cause dead pixel number of moves.
Besides, if find LCD splicing screen surface dirt , accurate method should be used to remove dirt . It is best to use a medium soft, non-fibrous material, such as cotton , lens tissue or a soft cloth, and then gently wipe stained with a little glass cleaner , prohibit the use of alcohol, a class of chemical solution , nor can the rough cloth or paper items , as these substances prone to scratches. Here to remind everyone that , do not spray cleaning agents directly to the surface of the screen appear , it is very easy to flow inside the screen causes the OLED Display screen internal short-circuit fault , resulting in unnecessary losses.
Splicing screen Huaping problems
One : Check the Character LCD
Display splicing screen and graphics card connection is loose. Poor contact will result in a " clutter ", " noise " is the most common form of Huaping phenomenon .
Two : Check the graphics card is overclocked . If excessive overclocking graphics cards , usually irregular , intermittent stripes. At this time , it should be appropriate to reduce the overclock . Note , first of all to reduce the memory frequency .
Three : Check the graphics quality . If after replacing graphics Huaping problems , and in the use of the first and second trick did not work , the card should be checked against electromagnetic interference and electromagnetic shielding whether the quality of clearance. Specific approach is: some of the parts that may cause electromagnetic interference as far away from graphics card installed ( such as hard disk ) , look Huaping disappears. If it is determined that the electromagnetic shielding function graphics , but off , replace the video card, or home-made shield .
Four : Check the lcd module splicing screen resolution or refresh rate is set too high. LCD splicing screen resolution is generally lower than CRT monitors , if more than the manufacturer's recommended best resolution , there may Huaping phenomenon.
Five : Verify installed an incompatible graphics card driver. This is generally easy to ignore , because the graphics driver updates faster and faster ( especially NVIDIA graphics card ) , some users are always eager to install the latest version of the driver . In fact , some of the latest test version of the driver either , either graphics or game for a specialized version optimized for the use of such drives can sometimes lead to the emergence of Huaping . Therefore , it is recommended that you try to use Microsoft-certified drivers , the best use of graphics drivers provided by the manufacturer .
Six : If you use more than five strokes later, still can not solve the problem , there may splicing OLED Module screen quality problems. In this case, replace the other monitor to be tested.
Two : Check the graphics card is overclocked . If excessive overclocking graphics cards , usually irregular , intermittent stripes. At this time , it should be appropriate to reduce the overclock . Note , first of all to reduce the memory frequency .
Three : Check the graphics quality . If after replacing graphics Huaping problems , and in the use of the first and second trick did not work , the card should be checked against electromagnetic interference and electromagnetic shielding whether the quality of clearance. Specific approach is: some of the parts that may cause electromagnetic interference as far away from graphics card installed ( such as hard disk ) , look Huaping disappears. If it is determined that the electromagnetic shielding function graphics , but off , replace the video card, or home-made shield .
Four : Check the lcd module splicing screen resolution or refresh rate is set too high. LCD splicing screen resolution is generally lower than CRT monitors , if more than the manufacturer's recommended best resolution , there may Huaping phenomenon.
Five : Verify installed an incompatible graphics card driver. This is generally easy to ignore , because the graphics driver updates faster and faster ( especially NVIDIA graphics card ) , some users are always eager to install the latest version of the driver . In fact , some of the latest test version of the driver either , either graphics or game for a specialized version optimized for the use of such drives can sometimes lead to the emergence of Huaping . Therefore , it is recommended that you try to use Microsoft-certified drivers , the best use of graphics drivers provided by the manufacturer .
Six : If you use more than five strokes later, still can not solve the problem , there may splicing OLED Module screen quality problems. In this case, replace the other monitor to be tested.
2013年11月2日星期六
Teach you choose the best low-cost monitors
LCD monitor when using the computer in our daily electronic devices take a long time to face , and the display is radiated more products , for large brands of LCD monitors its internal layout is more reasonable , done in the electromagnetic radiation shielding is in place .
Metallic shield layer is indispensable to monitor the original low
Electromagnetic radiation is the electromagnetic energy in the form of electromagnetic waves propagating through space phenomenon , OLED Display it is commonly referred to as the propagation velocity of light. Electromagnetic radiation according to their wavelength, frequency arranged in a number of frequency bands , the formation of the electromagnetic spectrum . The higher the frequency the greater the energy of the quantum of radiation and its biological effects is stronger .
The liquid crystal display screen electromagnetic radiation best approach is covered in a metallic shield radiation . We understand that the metal shield may be cut off the spread of electromagnetic radiation , but also conducive to heat transfer . From disassemble the figure we can see that the metal layer does not need very thick , just and accurate coverage of the radiation source to solve the problem . But the cottage manufacturers will still be the overall cost in order to solve these parts. ( Such as sales of low-cost display appearance of the material made of metal , which is also without care, the same metal can shield electromagnetic radiation )
Our approach: Although the choice to choose when the monitor heavy weight , but there are cottage within the display with the addition of other insignificant weight , so that consumers can not tell. So the easiest way to purchase a flat hand will monitor ( screen facing up ) , lcd module another person on the phone to the back of the display , such as the signal format becomes less , it indicates that the monitor has a metal shield , and in the work . Of course, this method is somewhat time-consuming, but also need to disassemble , can be considered a very simple way .
Metallic shield layer is indispensable to monitor the original low
Electromagnetic radiation is the electromagnetic energy in the form of electromagnetic waves propagating through space phenomenon , OLED Display it is commonly referred to as the propagation velocity of light. Electromagnetic radiation according to their wavelength, frequency arranged in a number of frequency bands , the formation of the electromagnetic spectrum . The higher the frequency the greater the energy of the quantum of radiation and its biological effects is stronger .
The liquid crystal display screen electromagnetic radiation best approach is covered in a metallic shield radiation . We understand that the metal shield may be cut off the spread of electromagnetic radiation , but also conducive to heat transfer . From disassemble the figure we can see that the metal layer does not need very thick , just and accurate coverage of the radiation source to solve the problem . But the cottage manufacturers will still be the overall cost in order to solve these parts. ( Such as sales of low-cost display appearance of the material made of metal , which is also without care, the same metal can shield electromagnetic radiation )
Our approach: Although the choice to choose when the monitor heavy weight , but there are cottage within the display with the addition of other insignificant weight , so that consumers can not tell. So the easiest way to purchase a flat hand will monitor ( screen facing up ) , lcd module another person on the phone to the back of the display , such as the signal format becomes less , it indicates that the monitor has a metal shield , and in the work . Of course, this method is somewhat time-consuming, but also need to disassemble , can be considered a very simple way .
Optional TV not just look at the panel
LCD panel LCD monitors can largely determine the brightness , contrast, color , viewing angle , the LCD panel is fast developing part of the LCD panel and LCD monitors are very closely linked, its production , and marketing pros and cons environment and other factors bearing on the quality of the LCD display itself , price and market trends, as an LCD monitor about 80% of its costs are concentrated in the panel, then let consumers buy TV time as long as attention panel everything will be fine yet ?
Let the salesperson at the store in consultation television , they tend to talk about a TV panel with you , usually they will give you about the advantages of television , and then let the other TV and its own TV comparison , another thing to You What indoctrination ; " original screen ,graphic lcd display module the best performance . Which screen with Taiwan , the general quality " sort of argument. So this argument has no real basis for it ? Let 's explore it.
It is understood that compose an LCD TV parts including: LCD panel, backlight control, image processing circuit , the external interface circuit and housing . Certainty on the quality of which play a role in the panel , the backlight and the image processing circuit section tube . A good TV is not a simple superposition of these parts , need to be very careful design and adjustment.
Like " bucket theory ", as affecting the performance of the TV to watch a lot of factors . For example, the number of bit processing circuit , the dynamic picture compensation / optimization technology , a TV signal reception and processing power and so on. Although the lcd module panel on the machine's cost and performance occupy an important position , but if we just blindly pursue this one indicator is advanced , it may fall into one and runs counter to the original intention of the point .
LPL biggest feature on -screen using IPS technology, with high viewing angle , fast response , accurate color reproduction , cheap advantage. The main disadvantage is the poor performance of black , more prone to leakage problems . LPL pixel screen showing a relatively large scale shape. S-LCD LCD panel, belonging PVA (PatternedVerticalAlignment, vertical alignment configuration ) VA technical areas , is the successor of MVA technology and developers . And its overall performance has not lag behind the latter , has a wide viewing angle and fast response time , pixel is scaly , but more than the shape of LPL much smaller scale .
Let the salesperson at the store in consultation television , they tend to talk about a TV panel with you , usually they will give you about the advantages of television , and then let the other TV and its own TV comparison , another thing to You What indoctrination ; " original screen ,graphic lcd display module the best performance . Which screen with Taiwan , the general quality " sort of argument. So this argument has no real basis for it ? Let 's explore it.
It is understood that compose an LCD TV parts including: LCD panel, backlight control, image processing circuit , the external interface circuit and housing . Certainty on the quality of which play a role in the panel , the backlight and the image processing circuit section tube . A good TV is not a simple superposition of these parts , need to be very careful design and adjustment.
Like " bucket theory ", as affecting the performance of the TV to watch a lot of factors . For example, the number of bit processing circuit , the dynamic picture compensation / optimization technology , a TV signal reception and processing power and so on. Although the lcd module panel on the machine's cost and performance occupy an important position , but if we just blindly pursue this one indicator is advanced , it may fall into one and runs counter to the original intention of the point .
LPL biggest feature on -screen using IPS technology, with high viewing angle , fast response , accurate color reproduction , cheap advantage. The main disadvantage is the poor performance of black , more prone to leakage problems . LPL pixel screen showing a relatively large scale shape. S-LCD LCD panel, belonging PVA (PatternedVerticalAlignment, vertical alignment configuration ) VA technical areas , is the successor of MVA technology and developers . And its overall performance has not lag behind the latter , has a wide viewing angle and fast response time , pixel is scaly , but more than the shape of LPL much smaller scale .
2013年11月1日星期五
LCD splicing screen "war " LED display
Customers often consult the difference between lcd and led , LCD splicing screen with LED display which is better ? Here a more comprehensive explanation of the difference between the next lcd and led in the end is what ? LCD splicing screen with LED display characteristics and main applications in what place ? led and lcd difference really so great?
I. What is LCD? What is the lcd module splicing screen ?
LCD stands for liquid crystal displays. LiquidCrystalDisplay , mainly TFT, UFB, TFD, STN LCD and other types of procedure entry point could not be located in the dynamic link library .
LCD splicing screen with LCD display unit splicing of the way through splicing control software system , to achieve the effect of a large-screen display splicing screen body . There are now common splicing 5.3MM 55-inch ultra-narrow LCD splicing , 6.7MM 46-inch Ultra Narrow mini lcd module splicing screen , 47 -inch LCD stitching, 60 inch and 40 inch LCD Video Wall Narrow LCD splicing system .
Second, what is LED? What is a LED display ?
LED is the acronym for Light Emitting Diode LightEmittingDiode . LED applications can be divided into two categories: one LED display ; Second, single-tube LED applications, including backlight LED, infrared LED and so on . LED display now , China's basic design and production technology level and international synchronization. LED display is formed by light-emitting diodes arranged in a display device 5000 yuan a single computer configuration . It uses low- voltage scan driver with : low power consumption , long life , low cost , high brightness , less failure, large visual distance and other characteristics .
I. What is LCD? What is the lcd module splicing screen ?
LCD stands for liquid crystal displays. LiquidCrystalDisplay , mainly TFT, UFB, TFD, STN LCD and other types of procedure entry point could not be located in the dynamic link library .
LCD splicing screen with LCD display unit splicing of the way through splicing control software system , to achieve the effect of a large-screen display splicing screen body . There are now common splicing 5.3MM 55-inch ultra-narrow LCD splicing , 6.7MM 46-inch Ultra Narrow mini lcd module splicing screen , 47 -inch LCD stitching, 60 inch and 40 inch LCD Video Wall Narrow LCD splicing system .
Second, what is LED? What is a LED display ?
LED is the acronym for Light Emitting Diode LightEmittingDiode . LED applications can be divided into two categories: one LED display ; Second, single-tube LED applications, including backlight LED, infrared LED and so on . LED display now , China's basic design and production technology level and international synchronization. LED display is formed by light-emitting diodes arranged in a display device 5000 yuan a single computer configuration . It uses low- voltage scan driver with : low power consumption , long life , low cost , high brightness , less failure, large visual distance and other characteristics .
LCD splicing screen features
1 , high brightness
LCD screen with TV and PC compared , DID LCD splicing screen has a higher brightness. TFT LCD Displays TV or PC screen brightness generally only 250 ~ 300cd/m2, while DID LCD screen brightness can reach more than 700cd/m2 .
2 , High Contrast
DID LCD splicing screen has a 1200:1 , even up to 10,000:1 contrast ratio, than conventional LCD PC or TV to more than double the normal projection of three.
3 , better color saturation
Ordinary CRT color saturation of only 50 %, while DIDLCD can reach 80% -92 % of the high color saturation , which benefited from professional development products for the DID color calibration technology , through this technology, in addition to still images color calibration, but also on the dynamic screen color calibration , so as to ensure accurate and stable image output .
4 , a wider viewing angle
PVA (PatternedVerticalAlignment) technology that is " vertical image adjustment technology" , the use of this technology, viewing angles up to dual 180 ° ( horizontal and vertical )OLED Module .
5 , better reliability
Ordinary LCD TVs , PC monitors design, does not support the night of continuous use , DID LCD screen for monitoring center, exhibition center designed to support 7x24 hours of continuous use .
6, pure flat panel display
LCD flat panel display equipment , is truly flat screen monitors , no curvature at the big picture , no distortion.
7 , slim narrow design
DID have a large product display area at the same time , there are thin , light weight advantages , easy to splice and installation. Splicing dedicated LCD screen, narrow its excellent design , making it the edge even in a single centimeter or less, such a small edge effect will not affect the overall display screen .
LCD screen with TV and PC compared , DID LCD splicing screen has a higher brightness. TFT LCD Displays TV or PC screen brightness generally only 250 ~ 300cd/m2, while DID LCD screen brightness can reach more than 700cd/m2 .
2 , High Contrast
DID LCD splicing screen has a 1200:1 , even up to 10,000:1 contrast ratio, than conventional LCD PC or TV to more than double the normal projection of three.
3 , better color saturation
Ordinary CRT color saturation of only 50 %, while DIDLCD can reach 80% -92 % of the high color saturation , which benefited from professional development products for the DID color calibration technology , through this technology, in addition to still images color calibration, but also on the dynamic screen color calibration , so as to ensure accurate and stable image output .
4 , a wider viewing angle
PVA (PatternedVerticalAlignment) technology that is " vertical image adjustment technology" , the use of this technology, viewing angles up to dual 180 ° ( horizontal and vertical )OLED Module .
5 , better reliability
Ordinary LCD TVs , PC monitors design, does not support the night of continuous use , DID LCD screen for monitoring center, exhibition center designed to support 7x24 hours of continuous use .
6, pure flat panel display
LCD flat panel display equipment , is truly flat screen monitors , no curvature at the big picture , no distortion.
7 , slim narrow design
DID have a large product display area at the same time , there are thin , light weight advantages , easy to splice and installation. Splicing dedicated LCD screen, narrow its excellent design , making it the edge even in a single centimeter or less, such a small edge effect will not affect the overall display screen .
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