Touch screen structure and method for regulating light uniformity by using same

A touch screen, uniformity technology, applied in the input/output process of data processing, instruments, electrical and digital data processing, etc., can solve the problem of sensing accuracy, reduce sensing errors, improve operating experience, and improve light uniformity. Effect

Inactive Publication Date: 2011-05-18
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the disadvantage of the infrared touch screen is that its sensing accuracy for touch depends on the density of the infrared matrix and the uniformity of the infrared rays.

Method used

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  • Touch screen structure and method for regulating light uniformity by using same
  • Touch screen structure and method for regulating light uniformity by using same
  • Touch screen structure and method for regulating light uniformity by using same

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Embodiment Construction

[0028] Please refer to figure 1 , which is a schematic structural diagram of an existing touch screen. In the infrared touch screen, a circuit frame 102 is installed on the top of the display panel 100 , and infrared transmitters 104 and infrared receivers 106 are arranged on the four sides of the circuit frame 102 , corresponding to each other to form an infrared matrix that crosses horizontally and vertically. When the user touches the display panel 100, the touch object 108, such as a finger or a touch pen, will block the two infrared rays passing through the position, so the position of the touch object 108 on the screen can be determined. In short, the infrared touch screen uses a dense infrared matrix in the X and Y directions to detect and locate the user's touch.

[0029]

[0030] Table I

[0031] Table 1 is a comparison table of sensing error and uniformity simulation data of infrared touch screens with three different infrared matrix densities A, B, and C. Amon...

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PUM

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Abstract

The invention provides a touch screen structure and a method for regulating light uniformity by using the same. The touch screen structure comprises a liquid crystal display panel, a backlight module and a reflecting border; a plurality of display pixels are arranged in the middle area of the liquid crystal panel, a plurality of infrared pixels are arranged on a first side edge, and a plurality of sensors corresponding to the infrared pixels are arranged on a second side edge opposite to the first side edge; the backlight module is arranged below the liquid crystal display panel and emits infrared light to the liquid crystal display panel; the reflecting border is arranged above the liquid crystal display panel; infrared light emitted by the backlight module passes through the infrared pixels of the liquid crystal display panel at the first side edge, and then is reflected by the reflecting border to the second side edge form the first side edge and is finally reflected by the reflecting border to the sensors. The infrared pixels are used for regulating the transmittance of the infrared light to preset target uniformity. The invention has the advantages of improving the light uniformity of an infrared touch screen greatly to reduce induction error of a touch position and realize better operation experience.

Description

technical field [0001] The present invention relates to a touch screen structure and a method for adjusting light uniformity thereof, and in particular to a touch screen structure and a method for adjusting light uniformity using infrared light on a liquid crystal display panel to realize touch control. Background technique [0002] The touch screen display (Touch Screen) allows the user to operate the host computer by lightly touching the pattern or text on the computer display screen with his finger, thus getting rid of the keyboard and mouse operation and making the human-computer interaction more convenient and concise. , At present, it is mainly used in public places such as information inquiry, electronic games, ordering songs and dishes, multimedia teaching, and pre-sale of air tickets / train tickets. [0003] According to the medium used and the working principle, the touch screen can be divided into four types: resistive type, capacitive induction type, infrared type...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/042
Inventor 范富诚牛慈伶庄幸蓉伍玉平曾泓玮
Owner AU OPTRONICS CORP
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