-
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.
-
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.
-
公开(公告)号：US12028020B2
公开(公告)日：2024-07-02
申请号：US17926988
申请日：2021-01-26
Applicant: NIHON DEMPA KOGYO CO., LTD.
Inventor： Masato Ogawa , Kenji Irie
Abstract: A crystal oscillator internally includes a package storing a crystal unit. The crystal oscillator is configured to include: a substrate having one surface side on which the crystal unit is disposed and another surface side on which a circuit component and a heating element are disposed, the circuit component including an oscillator circuit that oscillates the crystal unit, and the heating element regulating a temperature inside the package; a stepped portion formed at an inner wall of the package to support only an end portion of the substrate from the one surface side such that the crystal unit, the circuit component, and the heating element are spaced from a wall portion of the package; and a wire that connects between a terminal disposed at the heating element and a terminal disposed inside the package without via the substrate.
-
公开(公告)号：US20230198465A1
公开(公告)日：2023-06-22
申请号：US17926988
申请日：2021-01-26
Applicant: NIHON DEMPA KOGYO CO., LTD.
Inventor： Masato OGAWA , Kenji IRIE
Abstract: A crystal oscillator internally includes a package storing a crystal unit. The crystal oscillator is configured to include: a substrate having one surface side on which the crystal unit is disposed and another surface side on which a circuit component and a heating element are disposed, the circuit component including an oscillator circuit that oscillates the crystal unit, and the heating element regulating a temperature inside the package; a stepped portion formed at an inner wall of the package to support only an end portion of the substrate from the one surface side such that the crystal unit, the circuit component, and the heating element are spaced from a wall portion of the package; and a wire that connects between a terminal disposed at the heating element and a terminal disposed inside the package without via the substrate.
-
公开(公告)号：US20220416721A1
公开(公告)日：2022-12-29
申请号：US17841674
申请日：2022-06-16
Applicant: NIHON DEMPA KOGYO CO., LTD.
Inventor： Tomonori ABE
IPC: H03B5/32
Abstract: A quartz crystal device includes a package, a pedestal, and a crystal element. The pedestal is disposed in the package. The crystal element is bonded to the pedestal at four points. An angle formed by a center line connecting midpoints of both short sides of the crystal element and a straight line connecting a center point of the center line and each of bonding points is 22° or more and 30° or less.
-
Patent Agency Ranking
公开(公告)号：US11329210B2
公开(公告)日：2022-05-10
申请号：US16982031
申请日：2019-03-25
Applicant: NIHON DEMPA KOGYO CO., LTD.
Inventor： Yuki Yanagisawa , Hiroyuki Kukita
Abstract: A sensing device is provided. The sensing device includes a heat regulation mechanism to regulate a temperature of a piezoelectric resonator corresponding to a voltage, and uses a sensing sensor to cause a sensing object to adsorb to and desorb from the piezoelectric resonator by increase and decrease of the temperature. A drive voltage is regulated to regulate an amplification factor of a heat regulation voltage input to a drive voltage regulator that regulates the temperature of the heat regulation mechanism corresponding to the type of a sensing sensor connected to a device main body. Therefore, when a CQCM sensor that heats a crystal resonator using a heater circuit and a TQCM sensor that regulates a heat of the crystal resonator sing a Peltier element are each used, regulation ranges of the driving powers supplied to the respective heater circuit and Peltier element can be changed.
-
公开(公告)号：US11296674B2
公开(公告)日：2022-04-05
申请号：US16055169
申请日：2018-08-06
Applicant: NIHON DEMPA KOGYO CO., LTD.
Inventor： Akihiro Sakanashi , Hiroki Sekiguchi
Abstract: A quartz crystal device includes a crystal element, a container, a conductive adhesive having flexibility, first pillow portions, and a second pillow portion. The first pillow portions hold the crystal element floated from an inner bottom surface of the container at the proximities of the two positions. The second pillow portion opposes the crystal element at a proximity of a second side. The second side opposes the first side of the crystal element. A height of the first pillow portion is represented as h and a length of the first pillow portion in a direction perpendicular to the first side is represented as X1, where the h is 20 μm to 50 μm and the X1 is 150 μm or less. The conductive adhesive covers at least a top surface and a side surface of the first pillow portion. The side surface is in a center side of the crystal element.
-
公开(公告)号：US11287399B2
公开(公告)日：2022-03-29
申请号：US16882757
申请日：2020-05-26
Inventor： Hiroyuki Kukita , Tsuyoshi Shiobara , Yuki Yanagisawa , Shohei Nakagawa , Eiji Miyazaki , Yuta Tsuchiya
IPC: G01N29/22 , G01N29/02 , G01N29/036 , G01N29/32 , H01L25/16
Abstract: A sensing device that senses a substance to be sensed as a gas by causing a piezoelectric resonator to adsorb the substance to be sensed, includes: a substrate, a thermoelectric element unit, a support plate, and a base portion. A sensing module unit in which a substrate, a thermoelectric element unit, and a support plate are integrated is removably disposed to a base portion that performs at least one of heat supply and heat dissipation to the thermoelectric element unit.
-
公开(公告)号：US11181509B2
公开(公告)日：2021-11-23
申请号：US16978775
申请日：2019-03-06
Applicant: NIHON DEMPA KOGYO CO., LTD.
Inventor： Hiroyuki Kukita , Tsuyoshi Shiobara
IPC: G01N29/32 , G01N29/036 , G01N33/00
Abstract: To provide a technique for expanding a measurement dynamic range and performing a stable detection in a sensing sensor using a crystal resonator. A spacer is disposed between an oscillator circuit that oscillates a crystal resonator and a base body that cools an oscillator circuit to a cryogenic temperature, and an oscillator circuit board includes a heater resistor that heats the oscillator circuit. Therefore, the temperature of the oscillator circuit that does not fall below a functional limit temperature and is a low temperature as much as possible can be provided. A negative resistance of the oscillator circuit can be increased, the measurement dynamic range can be expanded, and the crystal resonator can be stably oscillated.
-
公开(公告)号：US10992260B2
公开(公告)日：2021-04-27
申请号：US16981706
申请日：2019-03-25
Applicant: NIHON DEMPA KOGYO CO., LTD.
Inventor： Tsukasa Kobata
Abstract: In an oscillator device that outputs a frequency signal based on an oscillation frequency of a crystal resonator and a frequency setting value, a frequency difference detector that obtains a difference value corresponding to a frequency difference between the output frequency of the oscillator device and an external clock signal and a temperature detector are disposed. An aging coefficient and a temperature characteristic coefficient are obtained based on a secular change of the difference value obtained in the frequency difference detector and a secular change of the detected temperature during a period where the external clock signal is obtained. Furthermore, a frequency correction value is calculated using the aging coefficient and the temperature characteristic coefficient during a holdover period, and the frequency correction value is added to the frequency setting value.
-
-
-
-
-
-
-
-
-
Search Results
377
records
(took 0.026 seconds)
