What is the difference between touch screen and display screen part two

Functionally speaking, touch screens are mainly based on the principle of capacitive sensing. The capacitive touch screen is a transparent special metal conductive substance affixed to the glass surface. When a finger touches the metal layer, the capacitance of the contact will change, causing the frequency of the oscillator connected to it to change. By measuring the frequency change, the touch position can be determined to obtain information.

The principle of the display screen is completely different from that of the touch screen. The more popular one on the market now is the TFT display screen. TFT (Thin Film Transistor) is the abbreviation of thin film transistor. TFT display is a mainstream display device on various laptops and desktops. Each liquid crystal pixel on this type of display is driven by a thin film transistor integrated behind the pixel, so TFT display is also a type of display. Active matrix liquid crystal display device. It is one of the best LCD color displays. The TFT display has the advantages of high responsiveness, high brightness, high contrast, etc., and its display effect is close to that of a CRT display.