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公开(公告)号：US20250047257A1
公开(公告)日：2025-02-06
申请号：US18780392
申请日：2024-07-22
Applicant: NIHON DEMPA KOGYO CO., LTD.
Inventor： Shuichi MIZUSAWA
Abstract: A base includes a first substrate, a contact hole and a contact hole wiring, a first metal film, a second substrate, a second metal film, and a routing wiring. The second substrate is formed of a material identical to a material of the first substrate and bonded to the first substrate by intermetallic bonding. The second metal film is disposed on a third surface as a surface of the second substrate on the first substrate side and constitutes the intermetallic bonding cooperatively with the first metal film. The routing wiring reaches a fourth surface of the second substrate as an opposite surface of the third surface from the contact hole wiring via the third surface and a side surface of the second substrate. The contact hole has an opening area on a second surface side larger than an opening area on a first surface side.
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公开(公告)号：US20240421797A1
公开(公告)日：2024-12-19
申请号：US18816495
申请日：2024-08-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Taiki GOTO , Hiroshi KUMANO , Kaiza MAKINO , Takashi HASE , Mitsuhiro YAMADA
Abstract: A quartz vibration element that includes: a quartz plate having first and second principal surfaces; first and second driving electrodes on the first and second principal surfaces, respectively, wherein when an X-axis, a Y-axis, and a Z-axis are defined as crystallographic axes of a quartz crystal of the quartz plate, an X′-axis and a Y′-axis are obtained by rotating the X-axis and the Y-axis about the Z-axis by a rotation angle φ, and a Y″-axis and a Z′-axis are obtained by rotating the Y′-axis and the Z-axis about the X′-axis by a rotation angle θ, the first and second principal surfaces are perpendicular to the Y″-axis, and when one of the first or second principal surfaces is viewed in plan and an angle ψ is between the X-axis and a long side of the quartz plate, the quartz plate satisfies both Ψ=α×φ×θ and −0.0165−0.016≤α≤−0.0165+0.016 or +0.0165−0.016≤α≤+0.0165+0.016.
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公开(公告)号：US20240421796A1
公开(公告)日：2024-12-19
申请号：US18706389
申请日：2022-11-07
Applicant: DAISHINKU CORPORATION
Inventor： Yoshinari MORIMOTO
Abstract: A crystal resonator device with a thermistor according to one or more embodiments may include: a package including an upper housing and a lower housing; a crystal resonator plate housed in the upper housing; a thermistor housed in the lower housing; and a lid hermetically sealing the upper housing. Excitation electrodes of the crystal resonator plate are each constituted of a plurality of metal film layers, and a main layer thereof is made of Au. The thermistor has a single plate-like thermistor element as a base material. Working electrodes of the thermistor are each constituted of a plurality of metal film layers, and a main layer thereof is made of Au.
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公开(公告)号：US12113502B2
公开(公告)日：2024-10-08
申请号：US17229065
申请日：2021-04-13
Applicant: SEIKO EPSON CORPORATION
Inventor： Masaya Kanno , Shigeru Shiraishi , Atsushi Matsuo
CPC classification number: H03H3/013 , H03H3/02 , H03H2003/022 , H03H2003/023 , H03H2003/027 , H03H9/02102 , H03H9/0547 , H03H9/1021 , H03H9/19
Abstract: A method of manufacturing a quartz crystal element includes preparing a quartz crystal wafer having a predetermined cutting angle with respect to a crystal axis of a quartz crystal, forming a first resist film having a first tilted part on a first surface of the quartz crystal wafer and dry-etching the first resist film with the quartz crystal, forming a first tilted surface by dry-etching the quartz crystal wafer from the first surface side, forming a second resist film having a second tilted part on a second surface of the quartz crystal wafer and dry-etching the second resist film with the quartz crystal, and forming a second tilted surface tilted by dry-etching the quartz crystal wafer from the second surface side. The quartz crystal element provided with the first tilted surface and the second tilted surface, and having a cutting angle different from the predetermined cutting angle is formed.
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公开(公告)号：US12107561B2
公开(公告)日：2024-10-01
申请号：US17397650
申请日：2021-08-09
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shigeo Ojima
CPC classification number: H03H9/1035 , H03H3/02 , H03H9/19 , H03H2003/022
Abstract: A method for manufacturing a vibrator that includes forming excitation electrodes, lead-out electrodes, and first sealing frames on the main surfaces of a crystal piece; forming second sealing frames on the main surfaces of a base part and a lid part; and sealing a crystal vibration element by bonding the first sealing frames to the second sealing frames. The first sealing frames each include a first Ti or Cr base layer 110, and a first Au surface layer. The first Ti or Cr base layers are thinner than the first Au surface layers. The second sealing frames each include a second Ni base layer, and a second AuSn surface layer. The second Ni base layers are thicker than the second AuSn surface layers. The sealing is carried out by alloying the first Au surface layers and the second AuSn surface layers to each other.
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Patent Agency Ranking
公开(公告)号：US12101075B2
公开(公告)日：2024-09-24
申请号：US17238211
申请日：2021-04-23
Applicant: NIHON DEMPA KOGYO CO., LTD.
Inventor： Tetsuya Watanabe , Takahiro Ohtsuka , Kazuhiko Osawa , Kazuhiro Hirota , Yoshiro Teshima
CPC classification number: H03H9/02023 , H03H3/02 , H03H9/0509 , H03H9/1021 , H03H9/19 , H10N30/082 , H03H2003/022
Abstract: A piezoelectric device includes a conductive adhesive, a container, and an AT-cut crystal element. The AT-cut crystal element has at least one side surface intersecting with a Z′-axis of the crystallographic axis of the crystal constituted of three surfaces. When a dimension of a straight-line portion along the Z′-axis of a second side opposed to the first side is expressed as W1 and a dimension along the Z′-axis of the AT-cut crystal element is expressed as W0, W1/W0 is 0.91 or greater, and the straight-line portion has both sides constituting corner portions in approximately right angles with sides along an X-axis of the crystal of the AT-cut crystal element. The side of the first side is at a −X-side in an X-axis of the crystallographic axis of the crystal and a side of the second side is at a +X-side in the X-axis.
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公开(公告)号：US20240250662A1
公开(公告)日：2024-07-25
申请号：US18420833
申请日：2024-01-24
Applicant: SEIKO EPSON CORPORATION
Inventor： Atsushi TANAKA
CPC classification number: H03H9/19 , H03B5/04 , H03H9/0557 , H03H9/1021
Abstract: A vibrator device includes: a vibrator; and a circuit device disposed apart from the vibrator, in which the circuit device includes a drive circuit configured to drive the vibrator, a temperature sensor configured to generate a temperature signal corresponding to a detected temperature, a temperature compensation circuit configured to compensate for temperature characteristics of a drive state of the vibrator based on the temperature signal, a heat source circuit configured to operate in a first state or in a second state in which current consumption is different from current consumption in the first state, and a transient response compensation circuit configured to compensate for, when the first state and the second state of the heat source circuit are switched, a difference between a transient response of a temperature detected by the temperature sensor and a transient response of a temperature of the vibrator.
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公开(公告)号：US20240250660A1
公开(公告)日：2024-07-25
申请号：US18625528
申请日：2024-04-03
Applicant: SEIKO EPSON CORPORATION
Inventor： Go YAMASHITA
CPC classification number: H03H9/08 , H03H9/02102 , H03H9/0552 , H03H9/1021 , H03H9/19
Abstract: A quartz crystal resonator includes a quartz crystal resonator element, a thermistor, and a package base having a first principal surface and a second principal surface having an opposed surface relationship with each other, the quartz crystal resonator element is mounted on the first principal surface side, the thermistor is housed in a recessed section of the second principal surface side of the package base, a plurality of electrode terminals connected to the quartz crystal resonator element or the thermistor is disposed on the second principal surface side of the package base, and a distance in a first direction perpendicular to the first principal surface from a mounting surface of the electrode terminals to the thermistor is equal to or longer than 0.05 mm.
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公开(公告)号：US12034433B2
公开(公告)日：2024-07-09
申请号：US17967927
申请日：2022-10-18
Applicant: SEIKO EPSON CORPORATION
Inventor： Tetsuya Otsuki , Tsugio Ide
IPC: H03H9/215 , B81B3/00 , B81B7/00 , G01C19/56 , G01C19/5621 , H03B5/32 , H03H3/007 , H03H9/02 , H03H9/05 , H03H9/10 , H03H9/17 , H03H9/19 , H03L1/02 , H03L1/04
CPC classification number: H03H9/215 , B81B3/0072 , B81B7/0048 , G01C19/56 , G01C19/5621 , H03B5/32 , H03H3/0076 , H03H9/02023 , H03H9/02102 , H03H9/02157 , H03H9/0509 , H03H9/0542 , H03H9/0547 , H03H9/1021 , H03H9/177 , H03H9/19 , H03L1/028 , H03L1/04
Abstract: A vibrator device includes a vibration element including a vibration portion and a fixed portion, a supporting member to which the fixed portion is attached to support the vibration element, and a first substrate to which the supporting member is attached, the supporting member includes a attaching portion attached to the first substrate, and A1≥A2 is satisfied in a case where an area of a rectangular region including the fixed portion is A1 and an area of a rectangular region including the attaching portion is A2 in a plan view seen from a thickness direction of the vibration element.
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公开(公告)号：US12034405B2
公开(公告)日：2024-07-09
申请号：US17562065
申请日：2021-12-27
Applicant: Seiko Epson Corporation
Inventor： Takehiro Yamamoto
CPC classification number: H03B28/00 , G06F1/022 , H03H9/19 , H03B2200/0034
Abstract: A circuit device includes an oscillation circuit which is electrically coupled to a first node to electrically be coupled to one end of a resonator and a second node to electrically be coupled to another end of the resonator, and is configured to oscillate the resonator to generate an oscillation signal, and a waveform shaping circuit which is coupled to the first node, to which the oscillation signal is input from the first node, and which is configured to output a clock signal obtained by performing waveform shaping on the oscillation signal, and a duty adjustment circuit configured to supply the first node with a bias voltage which is variably adjusted based on adjustment data to thereby adjust a duty ratio of the clock signal.
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