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Method for locating light source transmitter and optical touch device

A light source emitter and touch device technology, which is applied in the direction of instruments, diffusion elements, and electrical digital data processing, can solve problems affecting assembly efficiency and high labor costs, and achieve reduced labor costs, accurate and fast positioning, Convenience-enhancing effect

Inactive Publication Date: 2012-03-14
上海富伸光电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the implementation of using non-visible laser diodes as the light source emitters 11a, 11b takes a long time to complete the positioning of the light source emitters 11a, 11b, which seriously affects the efficiency of assembly, resulting in relatively high labor costs

Method used

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  • Method for locating light source transmitter and optical touch device
  • Method for locating light source transmitter and optical touch device
  • Method for locating light source transmitter and optical touch device

Examples

Experimental program
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Embodiment Construction

[0038] Please refer to figure 2 . figure 2 A schematic diagram of the structure before and after the positioning of the dual-wavelength light source emitter according to an embodiment of the present invention is disclosed. The optical touch device 2 a of this embodiment includes a touch panel 20 and a dual-wavelength light source emitter 21 . Wherein, the touch panel 20 has a touch area 202 , a light source setting area 204 and a positioning mark 206 . Meanwhile, the dual-wavelength light source emitter 21 is disposed in the light source installation area 204 of the touch panel 20 . In the foregoing, the light source installation area 204 may be anywhere around the touch panel 20 . In practice, a dual-wavelength light source emitter 21 is respectively provided at two corners of the optical touch device 2a.

[0039] It is worth mentioning that, in general optical touch devices, two sensors are usually arranged on two corresponding corners of the touch panel, and are respe...

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PUM

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Abstract

The invention relates to a method for locating a light source transmitter, comprising the following steps of: placing a double-length light source transmitter which is provided with a visible light laser diode and a non-visible light laser diode onto a light source mounting region of a touch panel; driving the visible light laser diode of the double-length light source transmitter to transmit visible light; correcting an appropriate position of the double-length light source transmitter on the light source mounting region to ensure that a visible light is aligned to a locating mark of the touch panel; and disabling the visible light laser diode of the double-length light source transmitter so that the visible light laser diode can not transmit the visible light. The invention also provides an optical touch device comprising the double-length light source transmitter.

Description

technical field [0001] The invention relates to an optical touch device and a positioning method for a light source emitter, in particular to a positioning technology for assembling an optical touch device. Background technique [0002] Resistive or capacitive touch devices require an additional thin film process, which will affect the transparency of the panel. At the same time, the traditional optical touch device uses light to detect the position on the surface of the touch panel that is touched by the finger, so it will not affect the transparency of the panel, and it can have a better performance than the above-mentioned resistive or capacitive touch device. Good visual effect. [0003] The principle of the traditional optical touch device 1 is to detect the shadow formed by the approaching object through the sensors at the two corners, and find out the touch position through triangulation. [0004] see figure 1 . figure 1 It is a schematic diagram of components of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/042G02B5/02
Inventor 董欣志
Owner 上海富伸光电有限公司