公开(公告)号：US11648586B2

公开(公告)日：2023-05-16

申请号：US17004414

申请日：2020-08-27

Applicant: TDK CORPORATION

Inventor： Kazuki Saito ,  Kaoru Kijima

IPC: B06B1/06 ,  G06F3/01

CPC classification number: B06B1/0651 ,  G06F3/016

Abstract: A vibration device includes a piezoelectric element and a vibration member. The vibration device is arranged to be supported on a base. The vibration member includes a first main surface opposing the base and a second main surface opposing the first main surface. The piezoelectric element is disposed on the second main surface. The first main surface of the vibration member is provided with a protrusion contacting the base and defining a vibration space on the first main surface. The protrusion is positioned outside the piezoelectric element to surround the piezoelectric element when the vibration member is seen through from a direction orthogonal to the first main surface.

公开(公告)号：US12245514B2

公开(公告)日：2025-03-04

申请号：US17604463

申请日：2020-05-12

Applicant: TDK CORPORATION

Inventor： Kazuki Saito ,  Kaoru Kijima

IPC: H10N30/87 ,  B06B1/06 ,  G06F3/01

Abstract: A vibration device includes a vibration plate, a piezoelectric element, and a wiring member. The vibration plate has conductivity. The piezoelectric element is disposed on the vibration plate. The wiring member is disposed to oppose the vibration plate via the piezoelectric element. The piezoelectric element includes a piezoelectric element body, a first external electrode, and a second external electrode. The piezoelectric element body has a first main surface and a second main surface facing away from each other in an opposing direction of the vibration plate and the wiring member. The first external electrode is disposed on the first main surface and electrically connected to the vibration plate. The second external electrode is disposed on the second main surface and electrically connected to the wiring member. The vibration plate includes a first projection projecting toward the wiring member and electrically connected to the wiring member.

公开(公告)号：US11607707B2

公开(公告)日：2023-03-21

申请号：US16232431

申请日：2018-12-26

Applicant: TDK CORPORATION

Inventor： Kaoru Kijima ,  Kazuki Saito

IPC: B06B1/06 ,  H01L41/047 ,  B06B1/02 ,  H01L41/09 ,  H01L41/083 ,  H01L41/04 ,  G10K9/125

Abstract: A vibration device includes a piezoelectric element, a vibration member to which the piezoelectric element is bonded, and a wiring member connected with the piezoelectric element. A method for vibrating the vibration device includes inputting a signal including a fundamental frequency component to the piezoelectric element through the wiring member, and vibrating the vibration device in a vibration mode that includes the fundamental frequency component and does not approximately include a high order frequency component that is n times (n represents an integer of 2 or more) the fundamental frequency component. The fundamental frequency component is lower than the resonance frequency component of the vibration device.

公开(公告)号：US12141358B2

公开(公告)日：2024-11-12

申请号：US17908056

申请日：2021-03-05

Applicant: TDK CORPORATION

Inventor： Kazuki Saito ,  Kaoru Kijima

IPC: G06F3/01

Abstract: In a vibration device, an operation unit has an operation surface operated by a user. A plurality of piezoelectric elements are disposed so as to overlap the operation surface when viewed from the direction orthogonal to the operation surface. The plurality of piezoelectric elements are disposed at mutually different positions in the direction along the operation surface. A control unit is arranged to control the plurality of piezoelectric elements. The control unit is arranged to vibrate the piezoelectric element corresponding to a first position on the operation surface where an operation is performed at a first frequency and vibrates the piezoelectric element corresponding to a second position on the operation surface different from the first position among the plurality of piezoelectric elements at a second frequency, in response to the operation of the operation surface. The second frequency is a frequency in the audible range.

公开(公告)号：US11765979B2

公开(公告)日：2023-09-19

申请号：US17265583

申请日：2019-08-08

Applicant: TDK CORPORATION

Inventor： Kazuki Saito ,  Kaoru Kijima

IPC: H10N30/88

CPC classification number: H10N30/883

Abstract: A piezoelectric element includes a piezoelectric element body, a first external electrode disposed on a first main surface of the piezoelectric element body, and a second external electrode disposed on a second main surface of the piezoelectric element body. A vibration member includes an electrically conductive third main surface and a fourth main surface opposing the third main surface. The vibration member is disposed such that the third main surface opposes the first external electrode. A protective layer covers the piezoelectric element. The protective layer includes a first resin layer and a second resin layer. The first resin layer covers the piezoelectric element body and the second external electrode. The second resin layer is disposed between the first external electrode and the third main surface and joins the first external electrode and the third main surface. The first resin layer is smaller in hardness than the second resin layer.

公开(公告)号：USD1049063S1

公开(公告)日：2024-10-29

申请号：US29739036

申请日：2020-06-22

Applicant: TDK CORPORATION

Designer： Kazuki Saito ,  Kaoru Kijima

Abstract: FIG. 1 is a front view of a vibration element for an actuator of our new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a left side view thereof;
FIG. 7 is a perspective view thereof; and,
FIG. 8 is a sectional view taken along the line 8-8 in FIG. 1.
The even-length broken lines in the drawings illustrate portions of the article that form no part of the claimed design.
The alternate long and short dash lines depict the boundaries of the claimed subject matter and form no part of the claimed design.

公开(公告)号：USD947144S1

公开(公告)日：2022-03-29

申请号：US29712312

申请日：2019-11-07

Applicant: TDK CORPORATION

Designer： Kazuki Saito ,  Kaoru Kijima