Input device

A technology of an input device and a detection layer, which is applied to the field of input devices in which electrostatic capacitance type detection parts are overlapped, can solve the problems of reduced detection accuracy of the pressure-sensitive detection part, difficulty in thinning, and increased cost, etc. The effect of lower assembly cost, lower material cost, easy work

Inactive Publication Date: 2009-08-26
ALPS ALPINE CO LTD
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Problems solved by technology

[0006] As mentioned above, if a shield layer is provided between the pressure-sensitive type detection part and the capacitance type detection part, the number of layers constituting the two detection parts will increase, which not only increases the cost, but also makes it difficult to achieve thinning.
[0007] The above-mentioned shielding layer is usually formed of a metal layer, but if a metal layer is provided on the pressure-sensitive detection part, the rigidity of the layer above the pressure-sensitive detection part will be increased due to the presence of the metal layer.
Therefore, when the surface of the input device is pressed with a stylus or the like, it is difficult to deform as a whole, and the detection accuracy of the pressure-sensitive detection part is lowered.

Method used

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Embodiment Construction

[0033] figure 1 It is an exploded perspective view showing the input device according to the first embodiment of the present invention, figure 2 It is an exploded perspective view showing the structure of a capacitive detection unit included in the above-mentioned input device, image 3 for from figure 1 An enlarged partial cross-sectional view of the cross-sectional view of the input device according to the first embodiment viewed from the direction indicated by the arrow III.

[0034] Such as figure 1 and figure 2 As shown, the input device 1 of the first embodiment has a rectangular shape in which the long side faces the X direction and the short side faces the Y direction. The central part of the input device 1 in the X direction is an electrostatic detection area 2 , and the two sides thereof are extension parts 3 , 3 . Almost the entire area including the electrostatic detection area 2 and the extensions 3 , 3 is a pressure-sensitive detection area 4 . image 3 T...

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Abstract

Disclosed is an input device capable of decreasing the number of layers of a detecting portion to reduce manufacturing costs and easily deforming layers provided above a pressure sensitive detecting portion. A capacitance-type detecting portion that detects the contact position of a finger on the basis of a variation in capacitance is provided on a pressure sensitive detecting portion that includes a lower detection layer formed on a lower base sheet and an upper detection layer formed on an upper base sheet. A voltage is applied to the pressure sensitive detecting portion and the capacitance-type detecting portion such that the application times of the voltages do not overlap each other. Therefore, it is possible to prevent interference between the detection operations of the two detecting portions.

Description

technical field [0001] The present invention relates to an input device in which a pressure-sensitive type detection part for detecting a pressing position based on a change in impedance value and an electrostatic capacitive type detection part for detecting an approaching position of a pointer such as a finger according to a change in capacitance are superimposed on each other. An input device that is thin and flexible and can maintain the detection accuracy of the two detection parts at a high level. Background technique [0002] The following Patent Document 1 discloses an input device equipped on a personal computer or the like. In this input device, a capacitive detection unit that detects the approach of a conductive indicator such as a finger based on a change in capacitance is superimposed on a pressure sensitive detection unit that detects a pressed position based on a change in impedance value. Electrodes are formed on a flexible resin film in the capacitive detec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/0416G06F3/0414G06F3/044G06F3/045G06F3/0446G06F3/0445G06F3/04166
Inventor 岸野真悟近道孝志贺贞一
Owner ALPS ALPINE CO LTD
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