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Other three kinds of touchscreen

Pubdate : 2019-04-25 Clicks: Author : admin

SAW (Surface Acoustic Wave) touchscreen

Touch screen monitors utilize a series of piezoelectric transducers and receivers along the sides of the monitor’s glass plate to create an invisible grid of ultrasonic waves on the surface. When the panel is touched, a portion of the wave is absorbed. This allows the receiving transducer to locate the touch point and send this data to the computer. SAW monitors can be activated by a finger, gloved hand, or soft-tip stylus. SAW monitors offer easy use and high visibility. !



Surface capacitive touchscreen technology

Surface capacitive (s-cap or surface cap) is a declining technology and is now mostly used in legacy gaming and amusement machines. One positive aspect of surface capacitive is that its optics are as good as projected capacitive and the sensor dimensions can be larger.



Infrared touchscreen

Monitors do not overlay the display with an additional screen or screen sandwich. Instead, infrared monitors use IR emitters and receivers to create an invisible grid of light beams across the screen. This ensures the best possible image quality. When an object interrupts the invisible infrared light beam, the sensors are able to locate the touch point.




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