For Xiaomi Redmi 7A Display Touch Screen Digitizer Assembly

TFT mobile phone LCD screen
TFT (Thin Film Transistor) is a thin film field effect transistor, which is a kind of active matrix crystal display. It can "actively" control individual pixels on the screen, which can greatly improve response time. Generally, the response time of TFT is relatively fast, about 80 milliseconds, and the viewing angle is large, generally reaching about 130 degrees, which is mainly used in high-end products. The so-called thin film field effect transistor means that each crystal pixel on the crystal display is driven by a thin film transistor integrated behind it. Thereby, screen information can be displayed at high speed, high brightness and high contrast ratio. TFT is an active matrix crystal display, which is technically driven by an "active matrix" method. The method is to use the transistor electrodes made of thin film technology, and use the scanning method to "actively pull" to control the opening of any display point. When the light source is irradiated, it first passes through the lower polarizer and transmits upwards, and uses crystal molecules to conduct light, and achieves the purpose of display by shading and transmitting light.