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Reasons For The Poor Functionality Of LCD Modules

2022-10-20

The display module is a display element in power terminals, instruments, etc. Its main function is to display Chinese characters or graphics. The common problem of Liquid Crystal Display modules during use may be no display or random display, so what are the reasons for the poor functionality of liquid crystal display modules?

1. The possible reasons for the shallow screen are: short circuit of the PCB board; short circuit caused by dirty PCB board; short circuit of the zebra paper itself, short circuit of the zebra paper electrode at the pressing screen; electrode dislocation when pressing the plate or pressing the screen.

2. The possible reasons for displaying garbled characters are: the test tool is broken; the PCB board chip is broken; the pressure plate and the screen are seriously dislocated, the zebra paper and the board are short-circuited; the zebra paper is short-circuited.

3. The possible reasons for the lack of COM or SEG are: PCB board circuit breaker; zebra paper electrode is disconnected when pressing plate or screen, and the electrode of zebra paper itself is open; when cleaning the screen, the electrode is cut or the electrode of the screen itself is broken;

4. The possible reasons for not displaying are: the test tool is broken; the power supply voltage is abnormal; the tool clip is not properly clamped during the test; the PCB board is broken; the zebra paper is seriously cracked.

5. The possible reasons for failing the procedure are: problems with test tools, power supplies and test clips; PCB board is broken.

These are some of the reasons for the poor functionality of LCD modules. The principle of LCD display is that the backlight assembly emits a uniform surface light, and the light is transmitted to our eyes through the LCD screen. The job of the screen is to process this light pixel by pixel to display the image. Both of these sections contain a large number of sections.

We focus on products in the field of optoelectronics, mainly selling Liquid Crystal Display, Liquid Crystal Display Module, Reflecting Liquid Crystal Display. If you need to consult us, if you want to know more, you can check our website, we also have Semi-transparent Liquid Crystal Display and Liquid Crystal Display For Clock on sale.

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