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公开(公告)号：US12107543B2
公开(公告)日：2024-10-01
申请号：US17768232
申请日：2021-07-30
Applicant: DAISHINKU CORPORATION
Inventor： Takuya Kojo
Abstract: An oven-controlled crystal oscillator according to one or more embodiments may include a core section hermetically encapsulated in a package for thermal insulation, wherein the core section is supported by the package via a core substrate, and the core section has a layered structure in which at least an oscillation IC, a crystal resonator and a heater IC are laminated in sequence.
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公开(公告)号：US11515857B2
公开(公告)日：2022-11-29
申请号：US15552498
申请日：2016-01-06
Applicant: Daishinku Corporation
Inventor： Takuya Kojo , Satoru Ishino
IPC: H03H9/10 , H03H9/17 , H01L41/23 , H01L41/316 , H03H3/04 , H03H9/02 , H03H9/19 , H03H9/13 , H03H9/05 , H03H3/02
Abstract: A third through hole is formed in a crystal resonator plate of a crystal resonator to penetrate between a first main surface and a second main surface. A through electrode of the third through hole is conducted to a first excitation electrode. A seventh through hole is formed in a first sealing member of the crystal resonator to penetrate between a first main surface and a second main surface. The through electrode of the third through hole is conducted to the through electrode of the seventh through hole. The third through hole is not superimposed to the seventh through hole in plan view.
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公开(公告)号：US11411550B2
公开(公告)日：2022-08-09
申请号：US17289261
申请日：2019-10-29
Applicant: DAISHINKU CORPORATION
Inventor： Satoru Ishino , Takuya Kojo
IPC: H01L41/053 , H01L41/083 , H03B5/32 , H03H9/05 , H03H9/13 , H03H9/19 , H01L41/18 , H03B5/34 , H03H9/17
Abstract: In a crystal oscillator accordance to an embodiment, a crystal resonator plate is bonded to, via laminated bonding patterns, a first sealing member covering a first excitation electrode of the crystal resonator plate; and a second sealing member covering a second excitation electrode of the crystal resonator plate. An internal space is formed, which hermetically seals a vibrating part including the first and second excitation electrodes of the crystal resonator plate. The laminated bonding patterns include a laminated sealing pattern annularly formed to surround the vibrating part in plan view so as to hermetically seal the internal space, and a laminated conductive pattern establishing conduction between wiring and electrodes. The laminated conductive pattern is disposed within a closed space surrounded by the laminated sealing pattern. To the laminated sealing pattern, GND potential is applied when the crystal oscillator operates.
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公开(公告)号：US10333053B2
公开(公告)日：2019-06-25
申请号：US15109645
申请日：2014-12-22
Applicant: Daishinku Corporation
Inventor： Minoru Iizuka , Takuya Kojo
Abstract: A crystal resonator includes: a crystal resonator plate; a first sealing member that covers a first excitation electrode of the crystal resonator plate; and a second sealing member that covers a second excitation electrode of the crystal resonator plate and includes a first external electrode terminal and a second external electrode terminal to be bonded to a circuit board using a flowable conductive bonding material. The second sealing member includes a second through hole and a third through hole that pass through between a first main surface and a second main surface on which the first external electrode terminal and the second external electrode terminal are formed. The second through hole and the third through hole include: respective through electrodes for conduction between electrodes formed on the first main surface and the second main surface; and respective through parts.
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公开(公告)号：US20160322952A1
公开(公告)日：2016-11-03
申请号：US15104994
申请日：2014-12-04
Applicant: DAISHINKU CORPORATION
Inventor： Minoru Iizuka , Takuya Kojo
CPC classification number: H03H3/02 , H01L2224/16225 , H03H9/0561 , H03H9/1021 , H03H9/1035 , H03H9/131 , H03H9/17
Abstract: A piezoelectric resonator device having a sandwich structure is provided, which can avoid gas generation with reduced size or height. A crystal resonator includes a crystal resonator plate, a first sealing member and a second sealing member. A sealing-member-side first bonding pattern and a sealing-member-side second bonding pattern, both to be bonded to the crystal resonator plate, are formed respectively on the first and second sealing members. On the crystal resonator plate, a resonator-plate-side first bonding pattern to be bonded to the first sealing member is formed on a first main surface and a resonator-plate-side second bonding pattern to be bonded to the second sealing member is formed on a second main surface. The sealing-member-side first bonding pattern is bonded to the resonator-plate-side first bonding pattern, and the sealing-member-side second bonding pattern is bonded to the resonator-plate-side second bonding pattern, both by diffusion bonding.
Abstract translation: 提供了具有夹层结构的压电谐振器装置，其可以避免产生尺寸或高度减小的气体。 晶体谐振器包括晶体谐振器板，第一密封构件和第二密封构件。 分别在第一和第二密封构件上形成要结合到晶体谐振器板的密封构件侧第一接合图案和密封构件侧第二接合图案。 在晶体谐振器板上，在第一主表面上形成要接合到第一密封构件的谐振器板侧第一接合图案，并且形成要与第二密封构件接合的谐振器侧第二接合图案 在第二主表面上。 密封构件侧第一接合图案被接合到谐振器侧侧第一接合图案，并且密封构件侧第二接合图案通过扩散接合而接合到谐振器侧侧第二接合图案。
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Patent Agency Ranking
公开(公告)号：US12249955B2
公开(公告)日：2025-03-11
申请号：US18270868
申请日：2022-02-21
Applicant: DAISHINKU CORPORATION
Inventor： Takuya Kojo
Abstract: An OCXO according to one or more embodiments may include a core section hermetically encapsulated inside a heat insulation package. The core section includes: an oscillation IC; a crystal resonator; and a heater IC, and furthermore is supported by the package via a core substrate. The core substrate is mechanically connected to the package by a non-conductive adhesive. The core section and the package are electrically connected to each other by wire bonding using wires.
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公开(公告)号：US12126321B2
公开(公告)日：2024-10-22
申请号：US17429918
申请日：2020-01-16
Applicant: DAISHINKU CORPORATION
Inventor： Manabu Ohnishi , Koji Nakamura , Takuya Kojo , Kohei Hasegawa
CPC classification number: H03H9/1042 , H03H3/02 , H03H9/19 , H03H2003/022
Abstract: A piezoelectric vibrating device according to the present invention is provided with: a piezoelectric vibration plate having first and second driving electrodes respectively formed on main surfaces on both sides thereof, the piezoelectric vibration plate further having first and second mounting terminals that are respectively connected to the first and second driving electrodes. The piezoelectric vibrating device is also provided with first and second sealing members respectively joined to the main surfaces on both sides of the piezoelectric vibration plate in a manner that the first and second driving electrodes of the piezoelectric vibration plate are covered with these sealing members. At least one of the first and second sealing members includes a film made of a resin.
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公开(公告)号：US11165390B2
公开(公告)日：2021-11-02
申请号：US15580695
申请日：2016-06-01
Applicant: Daishinku Corporation
Inventor： Takuya Kojo
Abstract: A piezoelectric resonator device having a sandwich structure is provided. A crystal oscillator includes: a crystal resonator plate; a first sealing member covering a first excitation electrode of the crystal resonator plate; and a second sealing member covering a second excitation electrode of the crystal resonator plate. A parallelepiped shaped package is formed by bonding: the first sealing member to the crystal resonator plate; and the second sealing member to the crystal resonator plate. The package includes an internal space in which is hermetically sealed a vibrating part of the crystal resonator plate including the first excitation electrode and the second excitation electrode. A bonding material hermetically sealing the vibrating part of the crystal resonator plate is formed to have an annular shape in plan view, and is disposed along an outer peripheral edge of the package.
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公开(公告)号：US10601393B2
公开(公告)日：2020-03-24
申请号：US15546004
申请日：2015-10-30
Applicant: Daishinku Corporation
Inventor： Takuya Kojo
Abstract: An AT-cut crystal resonator plate (2) includes a first main surface (2a) on which a first excitation electrode (211) is formed and a second main surface (2b) on which a second excitation electrode (212) is formed. The AT-cut crystal resonator plate (2) further includes: a substantially rectangular-shaped vibrating part (21) that is piezoelectrically vibrated when a voltage is applied to the first excitation electrode (211) and the second excitation electrode (212); a holding part (22) protruding from a corner part (21a) of the vibrating part (21) in a Z′ axis direction of the AT-cut crystal; and an external frame part (23) configured to surround an external circumference of the vibrating part (21) and to hold the holding part (22).
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公开(公告)号：USD806044S1
公开(公告)日：2017-12-26
申请号：US29519690
申请日：2015-03-06
Applicant: DAISHINKU CORPORATION
Designer： Minoru Iizuka , Takuya Kojo
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