Input device

An input device and electrode technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve the problem of indistinguishability, and achieve the effect of simplifying the circuit structure

Inactive Publication Date: 2010-11-10
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Moreover, in the input device described in Patent Document 1, when a non-conductive operating body other than a finger presses the reverse electrode, since the reverse electrode and the ground electrode will also come into contact, a switch signal can be obtained, so that it is impossible to distinguish between the finger and the ground electrode. Operation when pressing and operation when pressing with a non-conductive operating body

Method used

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Embodiment Construction

[0040] figure 1 with figure 2 The illustrated input device 1 has a flexible insulating substrate 2 formed of a thin plate or film of synthetic resin. The insulating substrate 2 is folded back 180 degrees at the folded portion 6 on the left side of the drawing to form a laminated portion 5 in which the opposing thin plate 3 and the opposing thin plate 4 as a part of the insulating substrate 2 face up and down. In the lamination part 5, the lower side where the opposing thin plate 3 is provided is a support side, and the upper side where the opposing thin plate 4 is provided is an operation side. The opposing thin plate 3 as the support side is fixed on the rigid substrate. The opposing thin plate 4 on the operation side is used as a part of the operation surface. Alternatively, the surface of the facing sheet 4 is covered with a flexible resin sheet forming the operation surface.

[0041] Such as figure 1 As shown, the lamination part 5 is substantially square, and a thro...

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Abstract

The invention provides an input device which can detect finger contact and finger press by detecting the change in capacitance. An operating side of the input device is provided with a first electrode (11a), a support side of the input device is provided with a second electrode (12a), and an elastic sheet (8) is arranged between the first electrode (11a) and the second electrode (12a). When a finger (16) approaches the first electrode (11a), the variable capacitance Ca increases; and when the finger (16) presses the first electrode (11a) through an insulated sheet to enable the first electrode (11a) and the second electrode (12a) to get close to each other, the variable capacitance Ca increases. Finger contact and finger press can be detected by monitoring the change in electric potential or current of the first electrode (11a) and monitoring the change in electric potential or current of the second electrode (12a).

Description

technical field [0001] The present invention relates to an input device capable of recognizing and detecting finger contact and finger pressing operation by utilizing capacitance change. Background technique [0002] A capacitive input device is provided instead of a push switch type input device on an operation unit of a portable device or the like. In this input device, a plurality of X electrodes and a plurality of Y electrodes are insulated from each other, and when a finger that is a conductor close to the ground potential approaches, the capacitance between the X electrodes and the Y electrodes will change, so that it is possible to detect to the close position of the finger. [0003] Furthermore, the following Patent Document 1 discloses an input device using both capacitance change detection and switching detection. [0004] In the input device described in Patent Document 1, a plurality of inversion electrodes that perform an inversion operation are arranged, and ...

Claims

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Application Information

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IPC IPC(8): G06F3/044
CPCG06F3/044H03K17/975H03K17/962G06F3/0448G06F3/0445
Inventor 铃木英树
Owner ALPS ALPINE CO LTD
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