公开(公告)号：US20240298118A1

公开(公告)日：2024-09-05

申请号：US18422509

申请日：2024-01-25

Applicant: TDK Corporation

Inventor： Kaoru NARITA ,  Akira Satoh ,  Kaoru Kijima

IPC: H04R17/00 ,  H04R1/02 ,  H10N30/20 ,  H10N30/87 ,  H10N30/88

CPC classification number: H04R17/00 ,  H04R1/025 ,  H10N30/20 ,  H10N30/875 ,  H10N30/88 ,  H04R2400/11

Abstract: An acoustic device includes a piezoelectric element and a housing holding the piezoelectric element. The housing includes a vibrator having a main surface to which the piezoelectric element is bonded, and a frame body bonded to the main surface to surround the piezoelectric element. The frame body is disposed inward of an outer edge of the main surface when viewed in a direction perpendicular to the main surface.

公开(公告)号：US20240298545A1

公开(公告)日：2024-09-05

申请号：US18430019

申请日：2024-02-01

Applicant: TDK Corporation

Inventor： Kaoru NARITA ,  Akira SATOH ,  Kaoru KIJIMA

IPC: H10N30/87

CPC classification number: H10N30/875

Abstract: A piezoelectric structure including a piezoelectric element including an external electrode, a wiring member including a conductor layer, and a conductive resin layer including a plurality of conductive particles and electrically connecting the conductor layer to the external electrode. The conductor layer includes a first conductor part bonded to the external electrode by the conductive resin layer, and a second conductor part extending from the first conductor part. The first conductor part is provided to be sparser than the second conductor part when viewed in a thickness direction of the conductor layer.

公开(公告)号：US20170284827A1

公开(公告)日：2017-10-05

申请号：US15511456

申请日：2016-04-13

Applicant: TDK CORPORATION

Inventor： Hiroyuki HIRANO ,  Seiji FUKUOKA ,  Toshihiko OYAMA ,  Takahiro MORIYA ,  Kaoru NARITA

IPC: G01D5/12

CPC classification number: G01D5/12 ,  G01D5/147

Abstract: A position detecting device includes a first bias magnet and a second bias magnet and a detecting element configured to detect a direction of a magnetic field generated by the first magnet and the second magnet. The first magnet and the second magnet are disposed with magnetic poles thereof having the same polarity arranged opposing each other. The direction of the magnetic field detected by the detecting element changes when an object to be detected D moves in an opposing direction between the first magnet and the second magnet.