TFT is the abbreviation of "Thin Film Transistor", which generally refers to a thin film liquid crystal display, but actually refers to a thin film transistor (matrix)-it can "actively" control each independent pixel on the screen, which is also The origin of the so-called active matrix TFT.
So how exactly is the image produced? The basic principle is simple: the display screen consists of many pixels that can emit light of any color, as long as each pixel is controlled to display the corresponding color to achieve the purpose. Backlight technology is generally used in TFT LCDs. In order to accurately control the color and brightness of each pixel, a shutter-like switch needs to be installed behind each pixel. When the "louver" is opened, light can pass through, and " When the blinds are closed, light cannot pass through. Of course, it's actually not technically as easy to implement as just said.