US 2018/0026175 A1Published application

Piezoelectric device and electronic device

AssigneeMurata Manufacturing Co., Ltd.

InventorsTAKASHI KIHARA, Yoshihiro Yamaguchi, Jun Endo

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Abstract

An electronic device that includes a housing and a piezoelectric sensor. The piezoelectric sensor is disposed in contact with an inner wall surface of the housing while in a bent state. The piezoelectric sensor includes a piezoelectric film, a coverlay, a first electrode, a second electrode, a third electrode, and a substrate having flexibility. The first electrode is disposed on a surface of the substrate. The first electrode includes a wide part and a narrow part. The coverlay covers a boundary between the wide part and the narrow part. The piezoelectric film covers a boundary between a part of the first electrode which is covered with the coverlay and a part of the first electrode which is not covered with the coverlay.

Claims19

Dependent claims

A piezoelectric device comprising:

a piezoelectric film including a first principal surface and a second principal surface;
a substrate having flexibility;
a first electrode on the substrate, the first electrode including a first wide part and a first narrow part connected with the first wide part;
a covering member covering a first boundary between the first wide part and the first narrow part of the first electrode;
a piezoelectric film including a first principal surface and a second principal surface, the first principal surface connected with the first wide part of the first electrode, the piezoelectric film covering a second boundary between a first part of the first electrode which is covered with the covering member and a second part of the first electrode which is not covered with the covering member;
and
a second electrode connected with the second principal surface of the piezoelectric film.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/695,406Filed 5 Sep 2017
Priority: JP 2015-10932129 May 2015
Published: 25 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H10N 30/302
With mechanical input and electrical output, e.g. functioning as generators or sensors: sensors
G06F 3/03
Input arrangements or combined input and output arrangements for interaction between user and computer: arrangements for converting the position…
G06F 3/03545
With detection of two-dimensional [2D] relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D…
H10N 30/87
Constructional details: electrodes or interconnections, e.g. leads or terminals

Family

Application15/695,406Continuation
US 10,756,252 B2Related patent
US 2018/0026175 A1This patent

From the US filing history. Foreign family members aren’t listed.

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