Nissha Co., Ltd.

Nissha Printing Co., Ltd.

Naoto Imae

Junichi Shibata

Yuji Watazu

Keisuke Ozaki

Eiji Kakutani

Jumpei Morita

Kenichi Shimizu

Shinichi Hagihara

In a pressure sensor, a pressure-sensitive layer faces a first electrode pattern and a second electrode pattern with a space interposed therebetween. The first electrode pattern includes a plurality of first electrode sections, a first interconnecting section that interconnects the plurality of first electrode sections, and a first wiring section that extends from a first end of the first interconnecting section. The second electrode pattern includes a plurality of second electrode sections disposed alternately with the first electrode sections, a second interconnecting section that interconnects the plurality of second electrode sections, and a second wiring section that extends from a second end of the second interconnecting section. The second wiring section extends such that the resistance of the conduction path between an output terminal of the first wiring section and an output terminal of the second wiring section is substantially the same for any adjacent pairs of the first electrode sections and the second electrode sections when the first electrode section and the second electrode section conduct with each other via the pressure-sensitive layer.

Pressure sensor

Problem: To achieve a pressure sensitive sensor capable of suppressing a drop in the accuracy of detecting a pressing force even in cases where the ambient temperature changes. Resolution means: A pressure sensitive sensor () includes: an elastically deformable covering member (A) covering a front surface side; a variable resistance electrode (A), electrical resistance thereof changing in response to a change in posture; a pyroelectric material layer () disposed covering the variable resistance electrode (A); and a pair of charge detection electrodes () disposed on both sides of the pyroelectric material layer () in a layering direction (L).

Pressure sensitive sensor and touch panel

In a pressure detecting apparatus, a pressure sensor includes a piezoelectric sheet that generates a piezoelectric signal according to a load that is applied. A touch detecting unit detects contact with the pressure sensor. An acquirer acquires a piezoelectric output based on the piezoelectric signal. A rate-of-change calculator calculates a rate of change with respect to time of the piezoelectric output acquired within an arbitrary time range before a touch detection time when the touch detecting unit detects contact with the pressure sensor. An applied pressure calculator calculates applied pressure by correcting the piezoelectric output acquired after an end time of the time range used in the calculation of the rate of change using the rate of change. The apparatus enables precise measurement of applied pressure in a pressure sensor.

Pressure detecting apparatus, method of controlling the pressure detecting apparatus, and program

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Kyoto, Japan

Naoto Imae