Capacitive touch screen feature structure

- Sep 10, 2018 -

Capacitive touch screen feature structure. The capacitive touch screen is plated with narrow electrodes on all four sides of the touch screen to form a low voltage ac electric field in the conductive body.When touching the screen, there will be a coupling capacitance between the finger and the conductor layer due to the human electric field. The current from the four electrodes will flow to the contact, and the strength of the current is proportional to the distance from the finger to the electrode. The controller behind the touch screen will calculate the proportion and strength of the current and accurately calculate the position of the touch point.The double glass of the capacitive touch screen not only protects the conductor and sensor, but also effectively prevents environmental factors from affecting the touch screen. Even if the screen is stained with dirt, dust or oil, the capacitive touch screen can still accurately calculate the touch position.