公开(公告)号：US10146352B2

公开(公告)日：2018-12-04

申请号：US15004133

申请日：2016-01-22

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hideki Kawamura ,  Masamichi Ando

IPC: G06F3/041 ,  H01L41/113 ,  H01L41/193

Abstract: A pressure-detecting sensor that includes a piezoelectric sensor, a rectangular plate member, and an attaching member. The piezoelectric sensor is attached to the plate member via the attaching member so that the piezoelectric sensor is located in the vicinity of an end of the plate member in the longitudinal direction of the plate member, and such that the longitudinal direction of the piezoelectric sensor is parallel to the transverse direction of the plate member. The attaching member is composed of a sticky agent having an elastic constant of 106 Pa or lower. The piezoelectric sensor has a shape having aspect ratio of 2.5 or higher.

公开(公告)号：US10042455B2

公开(公告)日：2018-08-07

申请号：US15053003

申请日：2016-02-25

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hideki Kawamura

IPC: G06F3/044 ,  G06F3/041 ,  G06F3/0354 ,  H01H3/02

Abstract: A detecting sensor is disclosed that includes position detection electrodes provided on a surface of a board which has flexibility, and are provided at a distance in a planar direction. Furthermore, the detecting sensor includes an insulator film provided on the surface of the board that covers the electrodes; pressing force detection electrodes provided on a back surface of the board; and a pressing force detection electrode provided to oppose to the electrodes with a gap therebetween. Consequently, it is possible to provide the detecting sensor that can reliably receive a user's input operation and precisely detect a pressing position and a pressing force.

公开(公告)号：US10024739B2

公开(公告)日：2018-07-17

申请号：US14515881

申请日：2014-10-16

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Hideki Kawamura ,  Masamichi Ando

IPC: H01L41/053 ,  G01L1/16 ,  H01L41/193 ,  B82Y15/00 ,  H01L41/113

Abstract: A pressing force sensor that includes a flat membrane piezoelectric element and a support. The flat membrane piezoelectric element includes a piezoelectric sheet having a piezoelectric constant. A first electrode is formed on a first main surface of the piezoelectric sheet and a second electrode is formed on a second main surface thereof. Long directions of the first electrode and the second electrode and a uniaxial stretching direction of the piezoelectric sheet form an angle of 45°. An opening portion having an elliptical section is formed on the support. The flat membrane piezoelectric element abuts the opening portion of the support. The support and the flat membrane piezoelectric element are disposed such that the opening portion is included within an area of the second electrode.

公开(公告)号：US09627605B2

公开(公告)日：2017-04-18

申请号：US14032238

申请日：2013-09-20

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Masamichi Ando ,  Hideki Kawamura

IPC: H01L41/08 ,  H01L41/113 ,  G01B7/16 ,  G01D5/18 ,  G01L1/16

CPC classification number: H01L41/1132 ,  G01B7/16 ,  G01D5/18 ,  G01L1/16 ,  H01L41/1134

Abstract: A displacement sensor having a rectangular shaped elastic member. A piezoelectric element is attached to a first main face of the elastic member. The piezoelectric element has a rectangular-shaped piezoelectric sheet and electrodes on both main faces of the piezoelectric sheet. The piezoelectric sheet is made of poly-L-lactic acid and is at least uniaxially-stretched. The piezoelectric element is attached so that the uniaxial-stretching direction of the piezoelectric sheet is 45° relative to a long-side direction of the elastic member. When the elastic member is bent along the long-side direction, the piezoelectric sheet is stretched along the long-side direction, and the piezoelectric element generates voltage of predetermined level.

公开(公告)号：US09528890B2

公开(公告)日：2016-12-27

申请号：US14603483

申请日：2015-01-23

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Hideki Kawamura ,  Masamichi Ando

IPC: G01L1/22

CPC classification number: G01L1/22 ,  G01L1/225

Abstract: A pressing force sensor that includes an expandable and contractible film, pressing force detecting resistor membranes formed on a portion of a main surface of the film, and a support disposed along the main surface of the film. The support is provided with recesses or holes with openings located in areas where the pressing force detecting resistor membranes on the main surface of the film are located. In the pressing force sensor, when a pressing force is exerted on the main surface of the film, the film is expanded with a pressing force detecting resistor membrane. As a result, the pressing force detecting resistor membrane is deformed, and a change in resistance value of the pressing force detecting resistor membrane corresponding to the deformation is detected.

Abstract translation: 一种压力传感器，包括可膨胀和收缩的膜，形成在膜的主表面的一部分上的按压力检测电阻膜，以及沿着膜的主表面设置的支撑件。 支撑体设置有位于薄膜主表面上的按压力检测电阻器膜的区域中的开口的凹部或孔。 在按压力传感器中，当在膜的主表面上施加按压力时，用压力检测电阻膜扩张膜。 结果，按压力检测电阻膜变形，并且检测到与变形相对应的按压力检测电阻膜的电阻值的变化。

公开(公告)号：US20160154514A1

公开(公告)日：2016-06-02

申请号：US15004133

申请日：2016-01-22

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hideki Kawamura ,  Masamichi Ando

IPC: G06F3/041 ,  H01L41/193 ,  H01L41/113

CPC classification number: G06F3/0414 ,  G06F3/0416 ,  H01L41/1132 ,  H01L41/193

Abstract: A pressure-detecting sensor that includes a piezoelectric sensor, a rectangular plate member, and an attaching member. The piezoelectric sensor is attached to the plate member via the attaching member so that the piezoelectric sensor is located in the vicinity of an end of the plate member in the longitudinal direction of the plate member, and such that the longitudinal direction of the piezoelectric sensor is parallel to the transverse direction of the plate member. The attaching member is composed of a sticky agent having an elastic constant of 106 Pa or lower. The piezoelectric sensor has a shape having aspect ratio of 2.5 or higher.

Abstract translation: 一种压力检测传感器，包括压电传感器，矩形板构件和附接构件。 压电传感器经由安装构件附接到板构件，使得压电传感器位于板构件的沿板构件的纵向方向的端部附近，并且压电传感器的纵向方向为 平行于板构件的横向方向。 附着构件由弹性常数为106Pa以下的粘性剂构成。 压电传感器具有2.5以上的纵横比的形状。

公开(公告)号：US20160153845A1

公开(公告)日：2016-06-02

申请号：US15007435

申请日：2016-01-27

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hideki Kawamura

IPC: G01L1/16 ,  H01L41/047 ,  H01L41/25 ,  H01L41/113 ,  H01L41/193

CPC classification number: G01L1/16 ,  G01L9/008 ,  H01L41/047 ,  H01L41/0475 ,  H01L41/1132 ,  H01L41/193 ,  H01L41/25

Abstract: A pressing sensor that includes a piezoelectric polymer film having a top principal surface and a back principal surface opposed to each other, and whose piezoelectric polymer is oriented along the top principal surface and the back principal surface; a first detection electrode disposed opposite the top principal surface of the piezoelectric polymer film; and a second detection electrode disposed opposite the back principal surface of the piezoelectric polymer film and opposing the first detection electrode. A first shape of the piezoelectric polymer film as viewed from the top principal surface and a second shape of the piezoelectric polymer film as viewed from the back principal surface differ from each other.

Abstract translation: 一种按压传感器，其包括具有彼此相对的顶部主表面和后主表面的压电聚合物膜，并且其压电聚合物沿着顶部主表面和后主表面定向; 第一检测电极，设置成与压电聚合物膜的顶部主表面相对; 以及第二检测电极，与所述压电聚合物膜的所述背面主表面相对并与所述第一检测电极相对。 从顶表面观察的压电聚合物膜的第一形状和从后主表面观察的压电聚合物膜的第二形状彼此不同。

公开(公告)号：US20140119576A1

公开(公告)日：2014-05-01

申请号：US13958870

申请日：2013-08-05

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Masamichi Ando ,  Hideki Kawamura

IPC: H04R17/00

CPC classification number: H04R17/005 ,  H04R1/227

Abstract: A piezoelectric speaker that includes a configuration in which a first piezoelectric speaker and a second piezoelectric speaker are respectively arranged adjacent primary surfaces of a plate-shaped base member. The first piezoelectric speaker and the second piezoelectric speaker have the same arrangement, and respective individual piezoelectric elements thereof are arranged so as to correspond to each other when viewed from the direction orthogonal to the primary surfaces of the base member. The first and second piezoelectric speakers include a piezoelectric polymer sheet and electrode patterns of substantially the same shape on both surfaces of the polymer sheet. According to this arrangement, plural individual piezoelectric elements are aligned with each other. A single type of acoustic driving signal is supplied to these plural individual piezoelectric elements in a synchronized manner.

Abstract translation: 一种压电扬声器，其包括第一压电扬声器和第二压电扬声器分别配置在板状基体的主表面附近的结构。 第一压电扬声器和第二压电扬声器具有相同的布置，并且其各自的各个压电元件被布置成当从与基底构件的主表面正交的方向观察时彼此对应。 第一和第二压电扬声器包括压电聚合物片和在聚合物片的两个表面上具有基本相同形状的电极图案。 根据这种结构，多个单独的压电元件彼此对准。 单个类型的声驱动信号以同步的方式提供给这些多个单独的压电元件。

公开(公告)号：US20140049137A1

公开(公告)日：2014-02-20

申请号：US14032238

申请日：2013-09-20

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Masamichi Ando ,  Hideki Kawamura

IPC: H01L41/113

CPC classification number: H01L41/1132 ,  G01B7/16 ,  G01D5/18 ,  G01L1/16 ,  H01L41/1134

Abstract: A displacement sensor having a rectangular shaped elastic member. A piezoelectric element is attached to a first main face of the elastic member. The piezoelectric element has a rectangular-shaped piezoelectric sheet and electrodes on both main faces of the piezoelectric sheet. The piezoelectric sheet is made of poly-L-lactic acid and is at least uniaxially-stretched. The piezoelectric element is attached so that the uniaxial-stretching direction of the piezoelectric sheet is 45° relative to a long-side direction of the elastic member. When the elastic member is bent along the long-side direction, the piezoelectric sheet is stretched along the long-side direction, and the piezoelectric element generates voltage of predetermined level.

Abstract translation: 具有矩形弹性构件的位移传感器。 压电元件附接到弹性构件的第一主面。 压电元件在压电片的两个主面上具有矩形的压电片和电极。 压电片由聚-L-乳酸制成，至少被单轴拉伸。 压电元件被安装成使得压电片的单轴拉伸方向相对于弹性构件的长边方向成45°。 当弹性构件沿着长边方向弯曲时，压电片沿着长边方向拉伸，压电元件产生预定水平的电压。

公开(公告)号：US11009410B2

公开(公告)日：2021-05-18

申请号：US16594589

申请日：2019-10-07

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Fumiya Isono ,  Takashi Kihara ,  Hideki Kawamura

IPC: G01L1/16 ,  G06F3/02 ,  G06F3/041

Abstract: A pressing sensor is provided that includes a first sensor element that outputs a voltage corresponding to an amount of displacement in shape of a receiving unit that receives a press operation; a press operation determining unit that determines whether the receiving unit is in a state of receiving a press operation; and a setting unit that, after elapse of a first prescribed time from a point of time at which the press operation determining unit determines that the receiving unit has received a press operation, sets an absolute value of a threshold that is smaller than an absolute value of the threshold before elapse of the first prescribed time, the absolute value of the threshold representing a difference from a ground voltage value for determining whether the receiving unit has ended reception of the press operation.