Insufficient brightness of LCD liquid crystal screen and factors affecting life

LCD liquid crystal screen is the most common LCD screen in our life. It can be seen everywhere in our life. Do you know the reason for the lack of brightness of the LCD liquid crystal screen? The editor has sorted out a few points, hoping to help you.

1. We need to know that LEDs are used for the backlight of small-sized liquid crystal screens, so after a long time of use, the light will appear dim.

2. As we all know, the temperature of small-sized LCD screens is different, So what kind of temperature with what kind of style screen, Therefore, when designing LCD liquid crystal screens, different temperature series are customized according to customer requirements. For example, if you put a normal temperature screen at 0-50 degrees Celsius in a high-temperature environment of -40-80 degrees Celsius, it will quickly show problems. Then some friends will ask, how do solve this situation? When we first started designing the product, we had to choose the correct operating temperature, so the width we chose was as wide as possible.

1. Backlight The CCFL (cold cathode lamp) of the backlight is prone to aging, air leakage, broken and other defects.

2. The driving circuit of the LCD screen is prone to electrical defects due to electrical components, such as ICs and capacitors.

3. The LCD display is prone to defects such as bright and dark spots and lines due to static electricity and foreign objects.

4. The aging of the lamp is mainly distinguished according to brightness and color. The brightness of aging will decrease, and the color of white light will be yellowish. The aging of the LCD liquid crystal display is usually not easy to distinguish, and there will be bright and dark spots or line defects in severe cases.

5. The LCD liquid crystal display is aging because there are also semiconductor components inside, and the liquid crystal will also age.

6. The screen and the backlight are separated, but you must not repair them by yourself, because the assembly and disassembly of the screen and the backlight are carried out in a clean room and an antistatic environment. To replace the backlight, the backlight must also be removed. If it has not been removed, the optical material may be damaged. If you have any questions, you can consult the manufacturer first.