The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 2016
Filed:
Mar. 12, 2014
Nissha Printing Co., Ltd., Kyoto-shi, Kyoto, JP;
Yuji Watazu, Kyoto, JP;
Keisuke Ozaki, Kyoto, JP;
Eiji Kakutani, Kyoto, JP;
Junichi Shibata, Kyoto, JP;
NISSHA PRINTING CO., LTD., Kyoto-Shi, JP;
Abstract
[Object] To provide a pressure detector capable of accurately detecting a pressing force. [Solution] A pressure detector according to the present invention includes a first piezoelectric sheet, a second piezoelectric sheetlocated so as to be close to or in contact with the first piezoelectric sheet, and a detection electrodethat sandwiches the first piezoelectric sheetand the second piezoelectric sheet. The first piezoelectric sheetand the second piezoelectric sheetare composed of materials having identical characteristics and have a thickness of 5 μm to 50 μm. Potential differences respectively generated between surfaces on a support substrateside and surfaces opposite to the support substrateof the first piezoelectric sheetand the second piezoelectric sheetwhen the first piezoelectric sheetand the second piezoelectric sheetare pulled in an in-plane direction have a relationship expressed by expression 1: V/V<0. In expression 1, Vand Vrepresent potential differences respectively generated between the surfaces on the support substrateside and the surfaces opposite to the support substrateof the first piezoelectric sheetand the second piezoelectric sheet