Multi - point capacitor screen double glass design
- Jan 26, 2019 -
The structure of capacitive touch screen is to coat the glass screen with a transparent thin film conductor layer and add a piece of protective glass to the conductor layer. The double glass design can completely protect the conductor layer and inductor.The capacitive touch screen is coated with thin electrodes on all sides of the touch screen to form a low voltage ac electric field in the conductive body.When touching the screen, due to the human electric field, a coupling capacitor will be formed between the finger and the conductor layer, and the current from the four-side electrode will flow to the contact. The strength of the current is proportional to the distance between the finger and the electrode, and the controller behind the touch screen will calculate the ratio and strength of the current to accurately calculate the position of the touch point.