The working principle of TFT color screen mainly involves the synergy of multiple components such as backlight source, color filter, thin film transistor, etc.
Backlight source: TFT color screen is usually equipped with backlight source, such as LED lamp, which emits white light to provide the necessary light source for the liquid crystal layer.
Color filter: Located above the liquid crystal layer, it filters light according to the color of each pixel to produce three basic colors of red, green and blue, which is the basis for forming a color image.
Thin film transistor: There is a thin film transistor behind each liquid crystal pixel, which controls the brightness of each pixel according to the image signal. When the thin film transistor is turned on, a part of the pixels in the liquid crystal layer transmits the three basic colors of red, green and blue to form a color image.
Viewing angle adjustment and dynamic display: By adjusting the bias voltage of the thin film transistor, the degree of distortion of the liquid crystal layer can be changed, thereby adjusting the viewing angle so that observers at different angles can see a clear image. Since the response time of the liquid crystal layer is long, the image is updated by line-by-line scanning to achieve dynamic display.