China Capacitive Touch Screen manufacturer

The capacitive touch screen is a four-layer composite glass screen, which uses the current induction of the human body to work. Capacitive touch screens can be divided into surface capacitive touch screens and projected capacitive touch screens. Both of these two capacitive touch screens have the advantages of high light transmittance, fast response, and long life, but they have poor working stability and often drift.

There are two main types of capacitive touch screens:

1. Surface capacitive type: The surface capacitive type uses sensors located at the four corners and a film evenly distributed over the entire surface, with an ordinary ITO layer and a metal frame. When a finger touches the screen, charges are released from the board. Sensing is done at the four corners of the touch screen, no complicated ITO patterns are required;

2. Projected Capacitor: Use one or more carefully designed ITO etched candles, these ITO layers are etched to form multiple horizontal and vertical electrodes, and use independent chips that are staggered in rows/columns and have sensing functions. Now tablet computers, mobile phones, vehicles, etc. use projected capacitors.