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LCD (Liquid Crystal Display) Liquid Crystal Display. The structure of LCD is to place a Liquid Crystal cell between two parallel Glass substrates. The lower substrate Glass is equipped with TFT (thin film Transistor), and the upper substrate Glass is equipped with a color filter. The signal and voltage on the TFT are changed to control the liquid crystal molecules. Rotate the direction, so as to achieve the display purpose by controlling whether the polarized light of each pixel point is emitted or not. LCD has replaced CRT as the mainstream, and the price has dropped a lot, and it has been fully popularized.
A few days ago, according to data from CINNO Research, 2020 is expected to be the first year of mass production and launch of fingerprint recognition mobile phones under the LCD screen.

LCD Type
According to the different Backlight sources, LCDs can be divided into two types: CCFL displays and LED displays.
Misunderstanding:
Many users believe that liquid crystal displays can be divided into LEDs and LCDs. To some extent, this understanding is misguided by advertisements.

The LED display on the market is not a true LED display. To be precise, it is an LED-backlit liquid crystal display. The liquid crystal Panel is still a traditional LCD Display. In a sense, this is somewhat fraudulent. nature! South Korea’s Samsung was once convicted by the British Advertising Association as violating the country’s advertising laws because its “LED TV” LCD TVs were suspected of misleading consumers. For liquid crystal displays, the most important key is the type of liquid crystal panel and Backlight, while the liquid crystal panels of displays on the market generally use TFT panels, which are the same. The difference between LED and LCD is only their Backlight type: LED The backlight and CCFL backlight (that is, fluorescent lamps) are Diodes and cold cathode lamps, respectively.