公开(公告)号：USD848959S1

公开(公告)日：2019-05-21

申请号：US29613595

申请日：2017-08-11

Applicant: TDK CORPORATION

Designer： Kaoru Kijima ,  Tatsuya Taki

公开(公告)号：US12070774B2

公开(公告)日：2024-08-27

申请号：US17459579

申请日：2021-08-27

Applicant: TDK CORPORATION

Inventor： Tatsuya Taki

IPC: B06B1/06 ,  G10K11/00 ,  G10K11/162

CPC classification number: B06B1/0681 ,  G10K11/002 ,  G10K11/162

Abstract: An ultrasonic device according to one aspect includes a case, a piezoelectric element, a sound absorbing material, and a vibration-proof material. The case defines a housing space. The piezoelectric element is disposed in the housing space. The sound absorbing material is disposed on a main face of the piezoelectric element and is made of a foaming material. The vibration-proof material is disposed around the sound absorbing material. The sound absorbing material includes a first opposing face opposed to the main face. The first opposing face has an uneven shape in which a plurality of protruding portions and a plurality of depression portions are alternately continued, and is rougher than the main face.

公开(公告)号：US10707832B2

公开(公告)日：2020-07-07

申请号：US15685301

申请日：2017-08-24

Applicant: TDK CORPORATION

Inventor： Kaoru Kijima ,  Kazushi Tachimoto ,  Tatsuya Taki

IPC: H03H9/205 ,  H03H9/17 ,  H01L41/047 ,  H01L41/09 ,  H03H9/05 ,  H03H9/13

Abstract: A piezoelectric element body has a first principal surface and a second principal surface. A pair of first electrodes is disposed on the first principal surface. The vibrating body includes a metal plate, an insulating layer, and a pair of second electrodes. The metal plate has a third principal surface and a fourth principal surface. The insulating layer is disposed on the third principal surface. The pair of second electrodes is disposed on the insulating layer. The piezoelectric element and the vibrating body are disposed in such a manner that the first principal surface and the third principal surface oppose each other via the insulating layer. The pair of second electrodes physically contacts the respective first electrodes. The second electrodes are exposed from the piezoelectric element and are separated from all of edges of the insulating layer, when viewed from a direction orthogonal to the third principal surface.

公开(公告)号：US10429606B2

公开(公告)日：2019-10-01

申请号：US15642090

申请日：2017-07-05

Applicant: TDK CORPORATION

Inventor： Toshiki Maruyama ,  Naoki Yusa ,  Seiji Fukuoka ,  Masahiro Hosokawa ,  Mio Hamashima ,  Hiroshi Tojo ,  Mitsunao Homma ,  Takuto Horii ,  Atsushi Ezawa ,  Tatsuya Taki

IPC: G02B7/02 ,  H02N2/04

Abstract: A lens drive unit that offers enhanced reliability in connection between an actuator electrode and an electric wire is provided. In the lens drive unit, an actuator has a weight housed in an holding portion of a base member and is thereby fixed in the base member. Electrodes on a lateral surface of the weight directly contact respective terminal electrodes on an inner lateral surface of the holding portion, so that an electrical connection is established therebetween. The arrangement enhances reliability in connection between the actuator electrodes and the terminal electrodes.

公开(公告)号：US10347816B2

公开(公告)日：2019-07-09

申请号：US15420798

申请日：2017-01-31

Applicant: TDK CORPORATION

Inventor： Toshiki Maruyama ,  Takuto Horii ,  Ryuichi Sakai ,  Shunsuke Ueno ,  Atsushi Ezawa ,  Tatsuya Taki

IPC: H01L41/083 ,  H01L41/09 ,  H01L41/04 ,  H01L41/047

Abstract: The present invention relates to a piezoelectric driving device 10 capable of moving the movable member 14 along the axis direction engaged in a movable manner to the axial direction with respect to the shaft 16. A pair of the external electrodes 26 and 27 respectively comprises the first external connection part 26a and the second external connection part 27a formed at the lower end face in Z axis direction by being insulated against each other. At the opposing face of the weight member 30 facing against the lower end face of the element 20, the first circuit pattern 36 and the second circuit pattern 37 are formed by being insulated against each other; and the first circuit pattern 36 and the second circuit pattern 37 are respectively connected to the first external connection part 26 and the second external connection part 27 by a metal bonding.