How Infrared Technology Touch Screen Works

- Dec 19, 2018-

The infrared touch screen is an infrared matrix densely placed in the X and Y directions in front of the screen. By continuously scanning whether infrared rays are blocked by the object and detecting the user's touch.

When there is a touch, the finger or other object will block the horizontal and vertical infrared rays passing through the position. When the touch screen scans and finds that there is an infrared light blocked, the red light is on, indicating that the infrared light is blocked, there may be a touch, and immediately change to another The coordinates are re-scanned. If another axis is found, there is also an infrared block. The yellow light is on, indicating that the touch is detected, and the position of the two infrared detectors that are blocked is reported to the host, and the position of the touch point on the screen is determined through calculation.

Infrared touch screen products are divided into two types: external and built-in. The external installation method is very simple, and it is the most convenient to install in all touch screens. As long as the frame is fixed in front of the display with glue or double-sided tape, the Antu electronic external touch screen can be fixed by the hook and the display, which is convenient for disassembly. trace.