10 Inch Lcd Touch Screen Panel
1. Principle of capacitive touch screen -- brief introduction
Capacitive touch screen is a special transparent metal conductive material affixed to the glass surface. When a finger touches the metal layer, the capacitance of the contact will change, making the connected oscillator frequency change. By measuring the change of frequency, the touch position can be determined to obtain information.It USES the electric field of the human body to conduct electricity, so as to form an electric current, which flows from the electrodes at the four corners of the touch screen to form four electric currents. The controller calculates the position of the touch point through the accurate calculation of the proportion of these four currents.
2. Principle -- construction of capacitive touch screen
Capacitive touch screen is mainly constructed by coating a transparent thin film body layer on the glass screen and adding a protective glass outside the conductor layer. The double glass design can completely protect the conductor layer and inductor.The capacitive touch screen's twin glasses not only protect conductors and sensors, but also effectively prevent 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.
3. Principle of capacitive touch screen
Capacitive touch screen technology makes use of the current induction of human body. The touch control technology of projective capacitive panel etches two mutually perpendicular ITO conductive circuit modules on two layers of ITO conductive glass coating, which is regarded as sliders with continuous changes in X and Y directions.When a current passes through one of the wires in the drive line, if there is a signal of a change in capacitance, it will cause a change in the capacitance node on the other wire.Detection of capacitance changes can be measured through the connected electronic circuit, and then through A/D controller to digital signal for the computer to do operation processing to obtain (X,Y) axis position, so as to achieve positioning
Contact us
Name:Sunny He
Tel:0086-596-2607595
Email:sales09@wiwotouch.com
Hot Tags: 10 inch lcd touch screen panel, China, suppliers, manufacturers, factory, best, price, 1 3 tft display, transflective lcd display, 40 touch screen, mipi standard, square wiwo lcd monitor, wholesale mono wiwo lcd