Touch screen (also known as “touch panel” or “touch control panel”) is an electronic display device that can receive input signals from touch points or other means. When a graphic button on the screen is touched, the tactile feedback system on the screen can be driven by the pre-programmed program to control various connected devices, replacing mechanical button panels and creating vivid audio-visual effects through the LCD display screen. [1]
Since the earliest resistive touch screens appeared in 1974, with the advancement of technology and the increasing demand for applications, various touch technologies have emerged to meet the needs of different industries and levels. Nowadays, commercialized touch screen technologies have been formed, including resistive technology touch screens, capacitive technology touch screens, infrared technology touch screens, surface acoustic wave (SAW) technology touch screens, etc., and have been widely applied in many fields such as mobile phones, tablet computers, retail, public information inquiries, multimedia information systems, medical equipment, industrial automatic control, entertainment and catering industries, automatic ticketing systems, and educational systems.