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Optical touch display system and method

A touch display, optical technology, used in static indicators, instruments, electrical digital data processing, etc.

Active Publication Date: 2011-11-09
ACER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The processor receives multiple frames and controls the display panel to display them

Method used

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  • Optical touch display system and method

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Embodiment Construction

[0027] refer to figure 1 , figure 1 It is a block diagram of the first embodiment of the optical touch display system of the present invention. In the figure, the optical touch display system 1 includes a display 11 , a processor 12 , a lighting control module 13 and a light sensing module 14 . The display 11 includes a display panel 111 , a backlight module 112 and a display driving unit 115 , and the backlight module 112 includes a visible light source 113 and an invisible light source 114 . The visible light source 113 emits visible light for image display, and the invisible light source 114 emits invisible light (for example, infrared light) for touch detection. Among them, the visible light source 113 is preferably a white light source or includes a red light source, a green light source and a blue light source; the invisible light source 114 is preferably an infrared light source, for example, an infrared light-emitting diode or a light emitting spectrum covering the i...

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Abstract

The invention discloses an optical touch display system and an optical touch display method. The system comprises a display, a processor, a light emitting control module and a light induction module, wherein the display comprises a display panel and a backlight module capable of emitting visible light and invisible light; the processor receives a plurality of frames and controls the display panelto display the frames; the light emitting control module controls the backlight module to selectively emit the visible light and the invisible light according to a time staggering mode or a frame distribution mode; the light induction module detects an invisible light signal on the surface of the display; and the processor determines the position of an object on the surface of the display according to the invisible light signal.

Description

technical field [0001] The present invention relates to an optical touch display system and method thereof, in particular to an optical touch display technology in which a backlight module selectively emits visible light and invisible light. Background technique [0002] At present, more and more attention is paid to the touch operation interface, among which, most of the small-sized screens are realized by resistive, capacitive and other technologies. With the gradual diversification of the size of touch screens, for large-size touch screens, for example, 17-30 inch screens, the optical system mainly uses infrared light coupled with an image capture module attached to the front frame outside the panel. Touch technology to implement. In the optical touch technology, an infrared light sensor and an infrared light source are respectively arranged on the upper left corner and the upper right corner of the screen, and a reflector is arranged on the periphery. Two infrared ligh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/30G09G3/20G06F3/042
Inventor 柯杰斌
Owner ACER INC