Position detecting device

A technology for detection devices and detection parts, applied in the direction of instruments, electrical digital data processing, input/output process of data processing, etc., can solve the problems of increasing the thickness of electronic paper and reducing the transmittance of the display area, etc.

Active Publication Date: 2010-06-09
WACOM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the transmittance of the display area will be reduced
In addition, since a plurality of transparent members are stacked on top of each other, the thickness of the e-paper will increase compared to an e-paper without the above-mentioned additional functions

Method used

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Embodiment Construction

[0026] The following will refer to Figure 1A to Figure 12 Embodiments of the present invention will be described. First, the following will refer to Figure 1A , 1B , 2A, 2B, 2C, and 2D to roughly describe the operating principle of the position detection section 101, and will refer to image 3 with Figure 4 The principle of the electronic paper 301 as a display unit will be roughly described.

[0027] Such as Figure 1A As shown, the position detection unit 101 includes an electrode film 102 as a transparent conductive film, contacts 104a to 104d, wirings 105a and 105b, an AC voltage source 106, a current-voltage conversion circuit 108, and the like.

[0028] The electrode film 102 may be a transparent conductive film such as an ITO (Indium Tin Oxide) film, an ATO film obtained by adding antimony to tin oxide, or an AZO film obtained by adding aluminum to zinc oxide. A thin insulating film (not shown) is attached on the surface of the electrode film 102 . The user touc...

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PUM

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Abstract

A position detecting device includes: a display unit having a first electrode formed of a transparent conductive film, a plurality of second electrodes, and display material interposed between the first electrode and the second electrodes; a display driver configured to drive the display unit based on a video signal input to the display driver; and a position detecting section configured to detect a position of an indicator on the first electrode and to output the detected position, The display unit may comprise, for example, an 'electronic paper', such that the display state of the display unit can be maintained even after a drive power applied between the first electrode and the second electrodes is discontinued.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Japanese Patent Application JP 2008-282399 filed in the Japan Patent Office on October 31, 2008, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to a position detection device. More specifically, the present invention relates to a novel position detection device to which a display function is added without reducing transmittance. Background technique [0004] There are various input devices for providing location information to a computer. Such input devices include a positional information input device called a "touch panel". The touch panel is an input device for operating a computer or the like by touching its flat detection surface with an input tool such as a finger, a dedicated stylus pen, or the like. The touch panel is constructed by superimposing position detection means for detecting a pointing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/045G06F3/046
CPCG06F3/0412G09G2300/08G09G3/3453G06F3/0444G06F3/04184G06F3/0354G06F3/044G06F3/045G06F3/04166
Inventor 山本定雄小野田直人
Owner WACOM CO LTD
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