公开(公告)号：US20150276504A1

公开(公告)日：2015-10-01

申请号：US14642053

申请日：2015-03-09

Applicant: TDK CORPORATION

Inventor： Takeshi YANATA ,  Yo SAITO ,  Kazuto TAKEYA ,  Katsunari MORIAI ,  Takashi INAGAKI ,  Takahiro ITAMI ,  Takeshi OYANAGI ,  Hitoshi ISHIDA

IPC: G01K7/22 ,  H01L41/00

CPC classification number: G01K7/22 ,  G01K1/14 ,  H01L41/0533 ,  H03H9/02102 ,  H03H9/0519 ,  H03H9/0557 ,  H03H9/1014 ,  H03H9/1021

Abstract: Provided is a piezoelectric device capable of improving measurement precision of a temperature of a piezoelectric element. A piezoelectric device (1) includes a package (2) including a housing member (4) having a thermistor substrate (3) and a frame (7) provided to project from a first main surface (3a) of the thermistor substrate (3) and in which a housing part (6) is formed by the first main surface (3a) and the frame (7) and a lid (9) provided on the frame (7) to cover a space (5) of the housing part (6), and a piezoelectric vibration element (5) provided on the first main surface (3a) of the thermistor substrate (3) in the housing part (6), wherein the thermistor substrate (3) is a multilayer negative temperature coefficient (NTC) thermistor.

Abstract translation: 提供一种能够提高压电元件的温度的测量精度的压电元件。 压电装置（1）包括：包括具有热敏电阻基板（3）的壳体构件（4）和设置成从热敏电阻基板（3）的第一主表面突出的框架（7）的封装（2） 并且其中壳体部分（6）由第一主表面（3a）和框架（7）形成，盖子（9）设置在框架（7）上以覆盖壳体部分（5）的空间 6）和设置在壳体部（6）中的热敏电阻基板（3）的第一主面（3a）上的压电振动元件（5），其中，热敏电阻基板（3）为多层负温度系数 ）热敏电阻。

公开(公告)号：US20230283253A1

公开(公告)日：2023-09-07

申请号：US18098929

申请日：2023-01-19

Applicant: TDK CORPORATION

Inventor： Katsunari MORIAI ,  Shunsuke OGURA ,  Takeshi OYANAGI ,  Ryo MORITA ,  Yusuke IMAI

IPC: H03H7/06 ,  H03H7/01

CPC classification number: H03H7/06 ,  H03H7/17 ,  H02H9/04 ,  H03H2007/013

Abstract: A notch filter 100 includes a varistor 1 that is connected between a signal line SL and a ground G. The varistor 1 has a capacitive component and outputs a signal with a second frequency different from a signal with a first frequency flowing in the signal line SL and a signal with the second frequency superimposed on the signal line SL to the ground G.

公开(公告)号：US20140167909A1

公开(公告)日：2014-06-19

申请号：US14102850

申请日：2013-12-11

Applicant: TDK CORPORATION

Inventor： Takahiro ITAMI ,  Naoyoshi YOSHIDA ,  Katsunari MORIAI

IPC: H01C7/12

CPC classification number: H01C7/123 ,  H01C1/148 ,  H01C7/1006 ,  H01C7/18

Abstract: An element body has first and second faces opposed to each other. A first conductor has one end exposed in a first face and the other end located in the element body. The second conductor has one end exposed in a second face and the other end located in the element body. The element body has a first element body section having the nonlinear voltage-current characteristics and a second element body section in which an electric current is more likely to flow than in the first element body section. The first element body section is located at least in part between the first conductor and the second conductor, in a direction in which the first conductor and the second conductor are separated from each other. The other end of the first conductor and the other end of the second conductor are located in the second element body section.

Abstract translation: 元件主体具有彼此相对的第一和第二面。 第一导体的一端暴露在第一面中，另一端位于元件主体中。 第二导体的一端暴露在第二面中，另一端位于元件主体中。 元件主体具有非线性电压 - 电流特性的第一元件主体部分和电流比第一元件主体部分更容易流动的第二元件主体部分。 第一元件主体部分在第一导体和第二导体彼此分离的方向上至少部分地位于第一导体和第二导体之间。 第一导体的另一端和第二导体的另一端位于第二元件主体部分中。

公开(公告)号：US20150249199A1

公开(公告)日：2015-09-03

申请号：US14596696

申请日：2015-01-14

Applicant: TDK CORPORATION

Inventor： Takeshi YANATA ,  Yo SAITO ,  Kazuto TAKEYA ,  Katsunari MORIAI ,  Takashi INAGAKI ,  Takahiro ITAMI ,  Takeshi OYANAGI ,  Hitoshi ISHIDA

IPC: H01L41/053

CPC classification number: H03H9/1021 ,  H01L41/053 ,  H01L2924/16195

Abstract: A piezoelectric device has: a ceramic substrate having a first principal surface and a second principal surface opposed to each other; a piezoelectric element arranged on the first principal surface; a frame having a first face and a second face opposed to each other and arranged on the ceramic substrate so as to surround the piezoelectric element; a metal layer arranged on the second face of the frame; and a metal lid arranged on the metal layer so as to close a space surrounded by the frame. The first face of the frame is in contact with the first principal surface of the ceramic substrate. The metal layer and the metal lid are joined to each other by resistance welding. The frame has a composite portion containing a metal and a metal oxide and the composite portion includes the second face and is in contact with the metal layer.

Abstract translation: 一种压电装置具有：具有彼此相对的第一主表面和第二主表面的陶瓷基板; 布置在所述第一主表面上的压电元件; 框架，其具有彼此相对并且布置在陶瓷基板上以围绕压电元件的第一面和第二面; 布置在所述框架的第二面上的金属层; 以及金属盖，其布置在金属层上以封闭由框架包围的空间。 框架的第一面与陶瓷基板的第一主表面接触。 金属层和金属盖通过电阻焊接彼此接合。 框架具有包含金属和金属氧化物的复合部分，并且复合部分包括第二面并与金属层接触。