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Patent Agency Ranking
公开(公告)号：US20180011282A1
公开(公告)日：2018-01-11
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
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.
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公开(公告)号：US20180011281A1
公开(公告)日：2018-01-11
申请号：US15640671
申请日：2017-07-03
Applicant: TDK CORPORATION
Inventor： Masahiro HOSOKAWA , Naoki YUSA , Seiji FUKUOKA , Mio HAMASHIMA , Toshiki MARUYAMA , Hiroshi TOJO , Mitsunao HOMMA , Takuto HORII , Atsushi EZAWA , Tatsuya TAKI
Abstract: A lens drive unit that prevents an actuator from being inclined is provided. In the lens drive unit, when a lens frame is displaced in a direction orthogonal to a direction in which the actuator extends and contracts with respect to a base member by, for example, impact from an outside of the lens drive unit, a drive shaft of the actuator abuts on a first lateral wall and a column, so that the actuator is prevented from being inclined with respect to the base member.
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公开(公告)号：US20220288637A1
公开(公告)日：2022-09-15
申请号：US17674102
申请日：2022-02-17
Applicant: TDK CORPORATION
Inventor： Yoshiki OHTA , Mikio SUMIYOSHI , Nana SATO , Mitsunao HOMMA , Hiroyuki IJIRI
Abstract: An ultrasonic transducer includes a case, a piezoelectric element, a wiring member, a foaming member, and a vibration damping material. The case includes a bottom wall. The piezoelectric element is disposed on the bottom wall inside the case. The wiring member is electrically connected to the piezoelectric element. The foaming member is disposed on the piezoelectric element. The vibration damping material is disposed between the piezoelectric element and the foaming member. The foaming member has a bottom surface opposing the piezoelectric element in a thickness direction of the piezoelectric element. A plurality of depressions is formed on the bottom surface. The vibration damping material bonds the piezoelectric element and the bottom surface.
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公开(公告)号：US20180076380A1
公开(公告)日：2018-03-15
申请号：US15695485
申请日：2017-09-05
Applicant: TDK CORPORATION
Inventor： Mitsunao HOMMA , Masahiro HOSOKAWA
IPC: H01L41/09 , H01L41/047 , H01L41/04 , H01L41/083 , H02N2/00
CPC classification number: H01L41/09 , B60J1/17 , E05F15/60 , G02B7/08 , H01L41/042 , H01L41/0471 , H01L41/0472 , H01L41/083 , H02N2/002 , H02N2/025
Abstract: A piezoelectric drive device including: laminated piezoelectric element including a first end face and a second end face opposed to the first end face; a weight member attached to the first end face; and a shaft attached to the second end face, in which a moving member, engaged to the shaft movable in an axial direction, is moved by activating the laminated piezoelectric element. Inside the laminated piezoelectric element, a first internal electrode and a second internal electrode, respectively having a plane surface approximately perpendicular to the first end face and the second end face, are laminated in Y axial direction, approximately perpendicular to the first internal electrode and the second internal electrode with a piezoelectric layer in-between. The piezoelectric drive device, in which the laminated piezoelectric element is difficult to bend, even when the load is applied to the shaft from a lateral direction, is provided.
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公开(公告)号：US20140319973A1
公开(公告)日：2014-10-30
申请号：US14182589
申请日：2014-02-18
Applicant: TDK CORPORATION
Inventor： Ryuta MOTANI , Kazuo NAGATA , Mitsunao HOMMA
IPC: H01L41/047 , G11B33/14
CPC classification number: H01L41/047 , G11B5/4873 , H01L41/04
Abstract: In a piezoelectric device, an identification pattern provided on a main face of a piezoelectric body is covered with an electrode, so as to inhibit the identification pattern from generating particles, while the identification pattern makes the polarity of the piezoelectric device discernible by the appearance thereof.
Abstract translation: 在压电装置中，由电极覆盖设置在压电体的主面上的识别图案，以便抑制识别图案产生颗粒，同时识别图案使压电装置的极性可以看出其外观 。
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