Causes of LCD bad points and industry standards of various brands
Date:2019-08-01
Whether the consumer LCD, industrial LCD or display will encounter brightness and disadvantages, whether the LCD with bright spots and disadvantages is unqualified. In fact, the LCD bad points and brightness are inevitable for all LCD manufacturers, but some LCD screen highlights and bad points are different in number, and then the position is different. The brightness and the number and position of the bad points of the LCD screen affect the quality division of the LCD, such as Youda photoelectric: Z gauge (no point), a (9:1,8:2), n-gauge, P gauge and V gauge. Let's introduce the disadvantages and causes of LCD screen
1. What is the disadvantage of LCD?
The bad point of LCD is also called point absence, which refers to the sub-pixel points displayed in black and white and red, yellow and blue primary colors, each point refers to a sub-pixel. The most feared thing about LCD is the bad. Once a bad point occurs, whatever the image is displayed on the display, one point on the display will always show the same color. This kind of "bad point" is not repairable. So far, the liquid crystal technology has developed to the present, and still can not fundamentally overcome this defect.
2. How do the bad things come about?
The LCD screen of notebook is composed of two glass plates, which is about 1 mm thick, and the middle is about 5 microns (1/1000 mm) crystal droplets, which are separated evenly and are contained in the small cell structure. Each three cells constitute a pixel on the screen. In the magnifying glass, the shape of the grid is displayed, and a pixel is a light point. Each light point has independent transistors to control the current strength and strength. If the transistor at the point is broken, it will cause the light point to be on or off forever. This is the bright spot or dark spot mentioned above, which is collectively referred to as "bad point".
3. the LCD of laptop has some disadvantages, is it normal?
According to the industry standards, "bad points" is a normal phenomenon, but not too much.
