公开(公告)号：US20180370236A1

公开(公告)日：2018-12-27

申请号：US16015447

申请日：2018-06-22

Applicant: SEIKO EPSON CORPORATION

Inventor： Ichiro ASAOKA ,  Hiromu MIYAZAWA ,  Masayuki OMOTO ,  Toshiki HARA ,  Toshihiro SHIMIZU ,  Akira KURIKI

IPC: B41J2/14 ,  H01L41/047 ,  H01L41/09

CPC classification number: B41J2/14233 ,  B41J2202/10 ,  H01L41/047 ,  H01L41/0973 ,  H01L41/1876

Abstract: Provided is a liquid ejecting head that ejects a liquid in a pressure chamber by a piezoelectric device, the piezoelectric device including a vibration plate, a piezoelectric layer containing lead, a first electrode provided between the vibration plate and the piezoelectric layer, and a second electrode provided on a side opposite to a side of the first electrode as viewed from the piezoelectric layer. The piezoelectric layer is preferentially oriented in a (100) plane, a lattice constant c defined by a crystal plane of the piezoelectric layer parallel to a film surface of the piezoelectric layer and a lattice constant a defined by a crystal plane perpendicular to the film surface satisfy 0.9945≤c/a≤1.012, and the thickness of the piezoelectric device is twice or more the thickness t (t

公开(公告)号：US20170098753A1

公开(公告)日：2017-04-06

申请号：US15251258

申请日：2016-08-30

Applicant: Seiko Epson Corporation

Inventor： Eiji OSAWA ,  Yoshihiro HOKARI ,  Akira KURIKI

IPC: H01L41/04

CPC classification number: H01L41/042 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/0459 ,  H01L41/0815 ,  H01L41/0973 ,  H01L41/1876 ,  H01L41/318

Abstract: A piezoelectric device includes a piezoelectric element including a first electrode, a second electrode, and a piezoelectric layer provided between the first electrode and the second electrode, and a driving system that drives the piezoelectric element by applying voltage to the first electrode and the second electrode, in which the driving system drives the piezoelectric element at a maximum voltage that is lower than a voltage at which a tunnel current or a Poole-Frenkel current starts to be generated in the piezoelectric element.

公开(公告)号：US20170057230A1

公开(公告)日：2017-03-02

申请号：US15240864

申请日：2016-08-18

Applicant: SEIKO EPSON CORPORATION

Inventor： Ichiro ASAOKA ,  Koichi MOROZUMI ,  Masato SHIMADA ,  Akira KURIKI

IPC: B41J2/14 ,  B41J2/16 ,  H01G4/30

CPC classification number: H01G4/30 ,  B41J2/14201 ,  B41J2/14233 ,  B41J2/161 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2002/14241 ,  H01G2/02 ,  H01G4/1245 ,  H01G4/228 ,  H01G4/40

Abstract: An electronic device includes a capacitor that is configured with a first electrode layer, an insulating layer, and a second electrode layer being formed in the order listed herein. At least one end of the capacitor is defined by an end of the second electrode layer. The insulating layer is provided so as to extend to a non-element region that is on the outside of one end of the capacitor. The insulating layer under the non-element region is formed thinner than the insulating layer under the capacitor. A difference between the thickness of the insulating layer under the non-element region and the thickness of the insulating layer under the capacitor is equal to or less than 50 nm.

Abstract translation: 电子器件包括电容器，其被配置有按照本文列出的顺序形成的第一电极层，绝缘层和第二电极层。 电容器的至少一端由第二电极层的一端限定。 绝缘层设置成延伸到位于电容器一端外侧的非元件区域。 非元件区下方的绝缘层比电容器下面的绝缘层薄。 非元件区域下的绝缘层的厚度与电容器下方的绝缘层的厚度之差等于或小于50nm。

公开(公告)号：US20180065364A1

公开(公告)日：2018-03-08

申请号：US15807060

申请日：2017-11-08

Applicant: SEIKO EPSON CORPORATION

Inventor： Ichiro ASAOKA ,  Koichi MOROZUMI ,  Masato SHIMADA ,  Akira KURIKI

IPC: B41J2/14 ,  H01G4/228 ,  H01G2/02 ,  H01G4/40 ,  H01G4/30 ,  B41J2/16

CPC classification number: H01G4/30 ,  B41J2/14201 ,  B41J2/14233 ,  B41J2/161 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2002/14241 ,  H01G2/02 ,  H01G4/1245 ,  H01G4/228 ,  H01G4/40

Abstract: An electronic device includes a capacitor that is configured with a first electrode layer, an insulating layer, and a second electrode layer being formed in the order listed herein. At least one end of the capacitor is defined by an end of the second electrode layer. The insulating layer is provided so as to extend to a non-element region that is on the outside of one end of the capacitor. The insulating layer under the non-element region is formed thinner than the insulating layer under the capacitor. A difference between the thickness of the insulating layer under the non-element region and the thickness of the insulating layer under the capacitor is equal to or less than 50 nm.

公开(公告)号：US20140368583A1

公开(公告)日：2014-12-18

申请号：US14301596

申请日：2014-06-11

Applicant: SEIKO EPSON CORPORATION

Inventor： Koichi MOROZUMI ,  Akira KURIKI ,  Ichiro ASAOKA ,  Sayaka KIMURA

IPC: H01L41/187 ,  B41J2/14

CPC classification number: H01L41/1876 ,  B41J2/055 ,  B41J2/14201 ,  B41J2/14233 ,  B41J2002/14241 ,  B41J2002/14258 ,  B41J2202/03 ,  H01L41/0815 ,  H01L41/0973 ,  H01L41/318

Abstract: A liquid ejecting head includes a piezoelectric element including a first electrode, a piezoelectric layer overlying the first electrode with an orientation control layer therebetween, and a second electrode overlying the piezoelectric layer. The piezoelectric layer is made of a complex oxide having a perovskite structure including an A site containing lead and a B site containing zirconium and titanium. The orientation control layer is made of a complex oxide having a perovskite structure including an A site containing lanthanum and a B site containing nickel and titanium.

Abstract translation: 液体喷射头包括压电元件，该压电元件包括​​第一电极，在第一电极上覆盖有取向控制层的压电层和覆盖在压电层上的第二电极。 该压电层由具有包含含铅的A位置和含有锆和钛的B位置的钙钛矿结构的复合氧化物制成。 取向控制层由具有包含含有镧的A位置和含有镍和钛的B位置的钙钛矿结构的复合氧化物制成。

公开(公告)号：US20190051461A1

公开(公告)日：2019-02-14

申请号：US16161991

申请日：2018-10-16

Applicant: SEIKO EPSON CORPORATION

Inventor： Ichiro ASAOKA ,  Koichi MOROZUMI ,  Masato SHIMADA ,  Akira KURIKI

IPC: H01G4/30 ,  H01G4/40 ,  H01G4/228 ,  B41J2/16 ,  B41J2/14 ,  H01G2/02 ,  H01G4/12

CPC classification number: H01G4/30 ,  B41J2/14201 ,  B41J2/14233 ,  B41J2/161 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2002/14241 ,  H01G2/02 ,  H01G4/1245 ,  H01G4/228 ,  H01G4/40

Abstract: An electronic device includes a capacitor that is configured with a first electrode layer, an insulating layer, and a second electrode layer being formed in the order listed herein. At least one end of the capacitor is defined by an end of the second electrode layer. The insulating layer is provided so as to extend to a non-element region that is on the outside of one end of the capacitor. The insulating layer under the non-element region is formed thinner than the insulating layer under the capacitor. A difference between the thickness of the insulating layer under the non-element region and the thickness of the insulating layer under the capacitor is equal to or less than 50 nm.

公开(公告)号：US20170266970A1

公开(公告)日：2017-09-21

申请号：US15614889

申请日：2017-06-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Ichiro ASAOKA ,  Koichi MOROZUMI ,  Masato SHIMADA ,  Akira KURIKI

IPC: B41J2/14

CPC classification number: H01G4/30 ,  B41J2/14201 ,  B41J2/14233 ,  B41J2/161 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2002/14241 ,  H01G2/02 ,  H01G4/1245 ,  H01G4/228 ,  H01G4/40

Abstract: An electronic device includes a capacitor that is configured with a first electrode layer, an insulating layer, and a second electrode layer being formed in the order listed herein. At least one end of the capacitor is defined by an end of the second electrode layer. The insulating layer is provided so as to extend to a non-element region that is on the outside of one end of the capacitor. The insulating layer under the non-element region is formed thinner than the insulating layer under the capacitor. A difference between the thickness of the insulating layer under the non-element region and the thickness of the insulating layer under the capacitor is equal to or less than 50 nm.