LCD dead pixel is also called “Point absence”, which means sub-pixel point displayed when LCD screen shows black-white colors and RGB. Each point is a sub-pixel. The most terrible thing for LCD is dead pixel. Once there’s a dead pixel, then no matter how the display shows picture, the certain point on the screen would always display one color. The “Dead pixel” is unrepairable; you’d just have to replace the entire screen to solve the problem. And for dead pixel, mainly there’re two kinds: dark dead pixel is a black point which would never ever show anything no matter how the content on screen changes. And the most annoying thing is that it would be the highlight always existed once the machine starts up. So far, crystal liquid technology still couldn’t overcome the shortcoming fundamentally.

How to inspect dead pixel?
It’s quite easy to inspect dead pixel, you’d just need to adjust the LCD brightness and contrast to the maximum (showing whitening image) or to the minimum (showing dark black image). You may find that there’s highlight or dark spot existing on screen. A pixel is a light spot. Each light spot has an independent transistor to control its current strength. If the transistor of the spot is broken, then the light spot would be always lightened or never shine again, and this is the highlight or dark spot mentioned above, which is called by a joint name “Dead pixel”. Here you should notice especially to differentiate “Highlight” and