Technologies Involved in Touch Screen Displays

    Touch screen display technology is a new type of human-computer interaction input method, which is more intuitive compared to traditional keyboard and mouse input methods. To meet the needs of market customers, a multi-point touch screen display has been developed, which, in conjunction with recognition software, can also achieve handwriting input on the touch screen. The touch screen consists of a detection component installed in front of the display screen and a touch screen controller. When fingers or other objects touch the touch screen installed on the front end of the display, the position touched is detected by the touch screen controller and sent to the host through an interface (such as RS-232 serial port).
Touch Function
    A multifunctional smart board, together with a computer and projector, forms a large touch screen. The computer screen is projected onto the smart board through the projector, and a pointer or finger is used instead of a mouse to operate the computer on the smart board, controlling Windows or Macintosh and its application software.
Acoustic Touch Screen
    The touch screen part of the surface acoustic wave touch screen is just a piece of transparent strengthened glass, so it can be made into a plane, cylinder or sphere, and there is no need to add special coating on the surface of the touch screen. The corner of the touch screen is equipped with a ultrasonic transducer, which can send a high-frequency sound wave across the screen surface. When fingers or other objects that can absorb or block the energy of sound waves touch the screen, the energy of sound waves passing through the fingers is partially absorbed, and the coordinate position can be determined based on changes in the receiver signal. Compared with other types of touch screens, surface acoustic wave touch screens are not affected by temperature, humidity and other environmental factors, and have high resolution; Good transparency, able to maintain clear and bright image quality; Fast reaction speed; With a third axis (i.e. pressure axis) response, its application is becoming increasingly widespread.