公开(公告)号：US09726552B2

公开(公告)日：2017-08-08

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: H01L41/053 ,  H03H9/08 ,  G01K1/14 ,  G01K7/22 ,  H03H9/05 ,  H03H9/02 ,  H03H9/10

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.

公开(公告)号：US09142340B2

公开(公告)日：2015-09-22

申请号：US14102850

申请日：2013-12-11

Applicant: TDK CORPORATION

Inventor： Takahiro Itami ,  Naoyoshi Yoshida ,  Katsunari Moriai

IPC: H01C7/10 ,  H01C7/13 ,  H01C7/12 ,  H01C1/148 ,  H01C7/18

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：US10096408B2

公开(公告)日：2018-10-09

申请号：US15185892

申请日：2016-06-17

Applicant: TDK CORPORATION

Inventor： Masayuki Uchida ,  Takahiro Itami ,  Naoyoshi Yoshida ,  Takeshi Oyanagi ,  Koki Yamada ,  Kazuaki Kajiwara

IPC: H01C7/12 ,  C04B35/453 ,  C04B35/638

Abstract: A voltage nonlinear resistor ceramic comprises: a Zn oxide; a Co oxide; an R (specific rare earth) oxide; a Cr oxide; an M1 (Ca, Sr) oxide; an M2 (Al, Ga, In) oxide; and strontium titanate. When content of the Zn oxide is assumed to be 100 mole portion in terms of Zn, content of the Co oxide is 0.30 to 10 mole portion in terms of Co, content of the R oxide is 0.10 to 10 mole portion in terms of R, content of the Cr oxide is 0.01 to 2 mole portion in terms of Cr, content of the M1 oxide is 0.10 to 5 mole portion in terms of M1, content of the M2 oxide is 0.0005 to 5 mole portion in terms of M2, and content of the strontium titanate is 0.10 to 5 mole portion in terms of SrTiO3.

公开(公告)号：US09762203B2

公开(公告)日：2017-09-12

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 ,  H03H9/10

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.

公开(公告)号：US09087623B2

公开(公告)日：2015-07-21

申请号：US14102005

申请日：2013-12-10

Applicant: TDK Corporation

Inventor： Takahiro Itami ,  Naoyoshi Yoshida ,  Kaname Ueda

IPC: H01C7/112 ,  C04B35/453 ,  H01B3/12

CPC classification number: H01B3/12 ,  C04B35/453 ,  H01C7/112

Abstract: A voltage nonlinear resistor ceramic composition comprises zinc oxide, with respect to 100 mol of said zinc oxide, 0.30 to 10 mol of Co oxide in terms of Co, 0.10 to 10 mol of R oxide (note that R is at least one selected from a group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) in terms of R, 0.10 to 5 mol of Cr oxide in terms of Cr, 0.10 to 5 mol of oxide of at least one selected from Ca and Sr respectively in terms of Ca or Sr, 0.0005 to 5 mol of oxide of at least one selected from Al, Ga and In respectively in terms of Al, Ga or In, and 0.10 to 5 mol of barium titanate in terms of BaTiO3.

Abstract translation: 电压非线性电阻陶瓷组合物包含氧化锌，相对于100摩尔所述氧化锌，换算成Co为0.30-10摩尔Co氧化物，0.10-10摩尔R氧化物（注意，R为选自 以R为0.10〜5摩尔的Cr氧化物，以Cr为基准，Y，La，Ce，Pr，Nd，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb和Lu组成的组， 分别以Ca或Sr计，选自Ca和Sr中的至少一种的氧化物为0.10〜5mol，Al，Ga，In中的Al，Ga，In中的至少一种选自Al，Ga，In的氧化物为0.0005〜5mol， 和钛酸钡0.10〜5摩尔的BaTiO 3换算。