Touch screen is a device that can receive the first input signal of induction type liquid crystal display device. When contacting with the graphic buttons on the screen, the screen of the tactile feedback system can be used to replace the mechanical button panel, and liquid crystal display screen by creating vivid audio effect. As one of the latest computer input devices, touch screens are the most simple and convenient way of human-computer interaction. Touch screens are found in healthcare, heavy industry, ATMs and museum displays.
