Knowledge of LCD LED OLED QLED！(1)
We often see LCD, LED, OLED, QLED, although the difference is only one letter, but the difference is very big! Today, Sally will explain it in detail here for your reference and study.
LCD
LCD is the full name of Liquid Crystal Display, mainly including TFT, UFB, TFD, STN and other types of Liquid Crystal Displays.
The structure of the LCD is to place a Liquid Crystal cell between two parallel glass substrates, set a TFT (thin film transistor) on the lower substrate glass, and set a color filter on the upper substrate glass, and control the Liquid Crystal molecules by changing the signal and voltage on the TFT. Rotate the direction, so as to achieve the purpose of controlling whether the polarized light of each pixel is emitted or not to achieve the display purpose. LCD is a substance between solid and liquid. It cannot emit light by itself and needs an additional light source. Therefore, the number of lamp tubes is related to the brightness of the Liquid Crystal Display.
