•   Infrared technology touch screen is cheap, but its frame is fragile, easy to produce light interference, distortion in the case of curved surface;
•   The design of capacitive touch screens is reasonable, but the problem of image distortion is difficult to be solved.
•   Resistance technology touch screen positioning accurate, but its price is quite high, and the fear of easy to scratch;
•   The surface acoustic touch screen solves various defects of previous touch screens. It is clear and not easily damaged. It is suitable for various occasions.

Infrared Touch Screen

The infrared touch screen installs a circuit board outer frame in front of the display, and the circuit board arranges infrared transmitting tube and infrared receiving tube on the four sides of the screen, forming an infrared matrix of horizontal and vertical intersection. When the user touches the screen, the finger will block the two infrared rays passing through the screen, so it can tell where the touchpoint is on the screen. Any touch object can change the infrared on the contact to achieve touch screen operation. The infrared touch screen is free from current, voltage, and static interference, suitable for some harsh environmental conditions. Its main advantages are low price, easy installation, no need for CARDS or any other controller that can be used in all levels of computer.

The infrared touch screen is free from current, voltage, and static interference, suitable for some harsh environmental conditions. Its main advantages are low price, easy installation, no card or any other controller, can be used at all levels of the computer. In addition, because there is no capacitor charging and discharging process, the response speed is faster than that of the capacitor type, but the resolution is lower.