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Static capacitor input typed device

An input device and electrostatic capacitance technology, applied in the input/output process of data processing, electrical digital data processing, instruments, etc., can solve the problems of high resistance value of grounding pattern, inability to use conductivity, low-cost materials, etc. Achieve the effect of suppressing the deviation of sensitivity

Inactive Publication Date: 2014-08-20
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, since low-cost materials have low conductivity, the resistance value of the ground pattern using low-conductivity materials will become high
Therefore, there is a problem that if there is variation in the resistance value of the ground pattern, the variation width of the resistance value becomes large, and the detection sensitivity of the capacitance type input device varies.
Therefore, low-cost materials with low conductivity cannot be used

Method used

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no. 1 approach

[0064] Hereinafter, the capacitive input device 1 according to the embodiment of the present invention will be described with reference to the drawings. In addition, in order to make the description easy to understand, the drawings have appropriately changed their dimensions.

[0065] figure 1 It is a schematic diagram showing the capacitive input device 1 according to the embodiment of the present invention. figure 1 (a) is a plan view, figure 1 (b) is a bottom view, figure 1 (c) is a right side view. figure 2 yes figure 1 (a) Schematic sectional view cut along line II-II. image 3 yes figure 1 (a) Schematic sectional view cut along line III-III.

[0066] Such as Figure 1 ~ Figure 3 As shown, the capacitive input device 1 of the present embodiment has: a substrate 10; an electrode pattern 2 laid on the operation surface, that is, one surface of the substrate 10; a ground pattern 3 laid on the other surface of the substrate 10; and a circuit Part 7.

[0067] ...

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Abstract

The invention provides a static capacitor input type device, which, used as a material for the grounding pattern, can inhibit the difference of the sensitivity even using the material with low conductivity. The static capacitor input device comprises a substrate (10), an electrode pattern (2) pasted on the face of the basal plate (10), and a grounding pattern (3) which is pasted on the other surface of the substrate (10); the grounding pattern (3) has a first grounding pattern (31) formed by the first material (61) and a second grounding pattern formed by the second material (62) the conductivity of which is higher than that of the first material (61); the first grounding pattern is formed by laminating with the electrode pattern, and when the second grounding pattern (32) is in contact with the first grounding pattern (31), the laminating area (2B) with the electrode pattern (2) is formed.

Description

technical field [0001] The present invention relates to an electrostatic capacitive input device, in particular to an electrostatic capacitive input device which detects the approaching position of a finger or the like through a change in electrostatic capacitance. Background technique [0002] A capacitive input device is a device that detects the capacitance of a sensor unit as an input device. A capacitive input device includes, for example, a sensor unit in which drive electrodes and detection electrodes are formed on a substrate, and a circuit unit including a drive circuit for applying a drive signal to the drive electrodes and a detection circuit for processing detection signals from the detection electrodes. Accordingly, the approach of a finger or the like can be detected, for example, by a change in capacitance between the drive electrode and the detection electrode. In addition, if the drive electrodes and the detection electrodes are arranged at a plurality of p...

Claims

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Application Information

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IPC IPC(8): G06F3/044
Inventor 福山照康土井优
Owner ALPS ALPINE CO LTD
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