Infrared multi-point touch screen
A multi-touch screen and multi-touch technology, applied in the direction of instruments, electrical digital data processing, data processing input/output process, etc., to achieve the effect of low cost, stable performance and compact structure
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[0026] In order to make it easy to understand the technical means, creative features, goals and effects achieved by the present invention, the present invention will be further explained below in conjunction with specific drawings.
[0027] Reference figure 1 , The infrared multi-touch screen includes a liquid crystal panel 1, and a backlight module 2 is provided behind the liquid crystal panel 1. The backlight module 2 generally includes an upper diffusion sheet 21, an upper light collection sheet 22, a lower light collection sheet 23, a lower diffusion sheet 24, a light guide plate 25, an increased emission cover 26, a reflector 27, and a module frame 28.
[0028] Reference figure 1 , figure 2 , The backlight module 2 is provided with an infrared light source 3, and is also provided with an optical transmission component that transmits the infrared light emitted by the infrared light source 3 to the front of the liquid crystal panel 1. The optical transmission component can use ...
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