Identification method of LCD character screen (LCD liquid crystal screen)
Nowadays, the competition for LCD character screens (LCD screens) is becoming increasingly fierce, and the level of craftsmanship is also improving significantly
LCD character screen (LCD liquid crystal screen) manufacturers have raised the standards for raw materials, which affects production and inspection
The control of internal quality has been strengthened, resulting in a significant increase in the frequency of bad points
Reduced.
The method of detecting bad pixels on LCD character screens is relatively simple now, just need to
Adjust the brightness and contrast of the LCD screen to a high value (when the value is high, the image appears white) or
When the value is low (the screen will display all black), how many lights will be displayed on the screen at this time
Point or how many dark spots.
If the number of these bad pixels does not exceed the specified standard range, even if one or more of them appear
Bad pixels are also a normal occurrence. But it's better not to be lower than the standard of A-level panels.