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Some Inherent Defects Of AMOLED Screen

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Author : China LCD screen supplier
Update time : 2020-08-22 14:18:30
Whether it is the display effect, contrast, or the performance in the sun, black performance, visual angle and many other aspects, the AMOLED screen is the best screen nowadays. But in fact, there are still some hard injuries in AMOLED screen that we have to talk about.
 
Some Inherent Defects Of AMOLED Screen

1. Screen burning problem: the characteristic of OLED screen is that each pixel illuminates spontaneously, and the pixels in the black part do not have to glow. In the performance of different colors, the harmony and glow of pixels are different. To take a simple example, plasma televisions in the past had this problem. If you watched a certain TV station for a long time, the pixels in the logo part of the TV station remained unchanged for a long time, so that you later switched to another station. The logo position can still vaguely see the shape of the TV station logo that you have been watching before. For example, the mobile phone Android system, the status bar is immobile for a long time, it shows the battery power, mobile phone signal, time and other information, after a long time, you can let the phone full-screen display a solid color picture, you will vaguely see the residual traces of those information in the previous status bar position.

The root cause of this problem is the self-luminescence of OLED pixels. Because of the difference in the display of each pixel on the screen, the aging speed of each position is different, especially to the later, the difference of pixel aging is offside obviously, which brings about this kind of residual shadow phenomenon is a complete physical damage and can not be recovered. (there is no such problem with the LCD screen, because the light emitting from the screen depends entirely on the external light source. ).

Don't underestimate this problem, many Samsung Galaxy S and S II mobile phone users can have this problem within three months, and people with obsessive-compulsive disorder like me will really be very upset. The only solution is to let the screen display an all-white picture with the brightest brightness and a display time of several hours, so that the aging of the pixels of the whole screen can be basically synchronized. Isn't that tragic?.

2. Color bias: many Samsung Galaxy users said that the screens of the Galaxy series of phones showed cold colors, and most of the pictures were too bright to match the real thing at all. Watching for a long time is easy to cause fatigue. Coupled with the burning screen problem, I am afraid the color bias problem is even more tragic.

3. Although the non-luminous characteristics of AMOLED pixels can make the screen more power-saving when it is black, it consumes much more power than LCD when it is white. Judging from the actual situation of the Android system, it seems that AMOLED can not escape the fate of more power consumption.

4. "although the AMOLED color gamut claims to reach 114% of NTSC, a report from Dr. Raymond Soneira of DisplayMate Technologies shows that the color data of the AMOLED display screen is really unflattering. It can only display 65000 colors, and more colors are generated by software interpolation. Details on color quantity interpolation can be searched by GOOGLE."
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