Electrostatic capacitance coupling type touch panel

A technology of electrostatic capacitance and coupling method, which is applied in the direction of circuits, electrical components, electric solid devices, etc., can solve the problems of overall thickness, surface static electricity is difficult to change, and position cannot be detected, etc., and achieves the effect of excellent display performance

Active Publication Date: 2010-06-16
JAPAN DISPLAY INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the general electrostatic capacitive coupling type touch panel, when touched with a complete insulator, the surface static electricity is difficult to change, and the position cannot be detected.
Therefore, it is not possible to input with a resin pen, etc., and a conductive touch pen must be used.
[0010] In addition, in a display device with a touch sensor obtained by laminating a touch sensor device and a display device, since the substrate of the touch sensor is bonded to the substrate of the display device, the overall thickness is relatively thick.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Made with the following conditions figure 1 The touch screen device of Embodiment 1 shown in the sectional view of FIG.

[0068] In the touch screen device of this embodiment, a coordinate detection circuit layer 102 for detecting position coordinates is formed on one side of a transparent substrate 101 . In this circuit layer, transparent electrodes serving as coordinate electrodes 103 and 105 are arranged via insulating films 104 and 106 .

[0069] As the transparent substrate 101, a glass substrate such as alkali glass such as soda glass or borosilicate glass, non-alkali glass, or chemically strengthened glass is suitable. In addition, transparent polyethylene terephthalate films, polyester films such as polyethylene naphthalate, and polyimide films with high heat resistance and transparency are also known, and such films can also be used. Transparent resin substrate.

[0070] As the transparent electrodes serving as the coordinate electrodes 103 and 105 , oxide t...

Embodiment 2

[0096] Made with the following conditions figure 2 The liquid crystal display device with a touch screen of the shown embodiment 2.

[0097] On the surface of the liquid crystal display device 201 facing the liquid crystal display area 202, it is superimposed and fixed on the first embodiment ( figure 1 ) obtained in the touch screen 203. The touch panel 203 is connected to a flexible printed wiring substrate 206 on which an IC 205 for controlling the position detection circuit of the touch panel is mounted. The flexible printed wiring board 206 connects the touch panel 203 and the liquid crystal display device 201 to input signals to the liquid crystal display device 201 . The liquid crystal display device 201 is mounted with a control IC 208 for liquid crystal display and connected to a flexible printed circuit board 207 . The flexible printed wiring board 207 plays a role of transmitting display image signals to the liquid crystal display device 201 by being connected t...

Embodiment 3

[0101] Made with the following conditions image 3 The touch screen device of Embodiment 3 is shown.

[0102] In Example 1 ( figure 1 ) formed a surface protection layer 301 on the outermost surface of the touch screen obtained in ).

[0103] As a material of the protective layer, the insulating film material having light transmission used in the insulating films 104 and 106 of Embodiment 1 is suitable.

[0104] In addition, not limited to the above-mentioned photosensitive materials, thermosetting materials obtained by combining acrylic resins, acrylic epoxy resins, and silicone resins as matrix polymers only with thermosetting materials are also suitable.

[0105] Furthermore, it can be bonded to a glass substrate such as alkali glass such as soda glass or borosilicate glass, non-alkali glass, or chemically strengthened glass, and used as the surface protection layer 301 . It can also be used with transparent resins such as transparent polyethylene terephthalate film, pol...

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PUM

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Abstract

The invention provides an electrostatic capacitance coupling type touch panel. The capacitive touching type touch panel detects a position by detecting a change of a capacitance between a finger tip and a position detection electrode. Thus, when touched by a perfect insulator, static electricity on the surface thereof is not changed enough so that it is unable to detect the position. In order to solve this problem, the invention proposes a capacitive coupling type touch panel including an electrode circuit configured to detect a position coordinate and provided on a transparent substrate. Thecapacitive coupling type touch panel also includes a floating electrode provided at a position so as to be isolated from and opposed to the electrode circuit. When the floating electrode is touched with a pen to allow the floating electrode to approach the XY-position coordinate electrode, capacitive coupling occurs between the floating electrode and the XY-position coordinate electrode so that the position touched with the pen is detected and and the touch panel of the electrostatic capacitance coupling way corresponding with the pen input function is realized.

Description

technical field [0001] The present invention relates to an electrostatic capacitive coupling type touch screen and a display device equipped with it, in particular to an electrostatic capacitive coupling type touch screen corresponding to resin pen input. Background technique [0002] A touch panel is a device that detects a position by touching (pressing) a touch panel screen corresponding to a display area of ​​the display device with a finger or a pen in combination with a display device, and inputs position coordinates, etc. to the display device. [0003] In terms of its operating principle, there are various methods such as a resistive film method, an electrostatic capacitive coupling method, an infrared ray method, an acoustic pulse method, an ultrasonic method, and an electromagnetic induction coupling method. [0004] Among them, resistive film type and capacitive coupling type touch panels are advantageous in terms of cost. In recent years, they have been mounted o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG06F3/044G06F3/0447G06F3/0445G06F3/0412G06F2203/04111G06F3/0448G06F3/04166H10K59/40
Inventor 田中顺关口慎司万场则夫滨本辰雄
Owner JAPAN DISPLAY INC
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