First of all, I'll help you to find out. It seems that you don't understand LCD and led. Computers are usually LCD displays with LED backlight and non LED displays. The price is different. LED screens are more than several times more expensive.
Author:Li Zhixin Time:2021-10-09 11:22 Browse(null)
Ordinary LEDs emit blue light. The reason why they emit white light is that they are coated with yellow phosphor. If the quality of phosphor is too poor, it will lead to too much blue light from LED, and it is recognized that too much blue light will damage the fundus. Now three color LED lamp beads have been invented, but the price is relatively expensive. Therefore, CCFL cold light lamp is still necessary from the perspective of vision protection. However, because it needs high-voltage bar to light up, and the calorific value is too large, the service life is short, it will eventually be replaced by three color LED.
Author:celia Time:2021-08-05 14:42 Browse(null)
If it is the backlight of TFT display, it must be white LED. The blue light you see is that only blue dots are displayed in CF of TFT, which leads to blue light when white light passes through.
Author:pocket knife Time:2021-08-03 09:40 Browse(null)
Author:Cai Changjiang Time:2021-08-02 09:12 Browse(null)
What is the scope of ED display?
Author:Zhong Fengya Time:2021-06-09 09:25 Browse(null)