Patents by Inventor Koichi Mizugaki
Koichi Mizugaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230420299Abstract: A method for manufacturing a semiconductor device includes: forming a first through hole penetrating from a first surface to a second surface of a semiconductor substrate; forming a second insulating film at the first surface of the semiconductor substrate and a side surface of the first through hole; disposing a resist at a surface of the second insulating film from the first surface of the semiconductor substrate to an end portion of the side surface of the first through hole on a first surface side of the semiconductor substrate; wet-etching the second insulating film by using the resist as a mask; covering the first surface of the semiconductor substrate and the side surface of the first through hole with an organic insulating film; and forming a second conductive film at a surface of the organic insulating film.Type: ApplicationFiled: June 22, 2023Publication date: December 28, 2023Inventors: Koichi Mizugaki, Tomoyuki Kamakura, Yasuke Matsuzawa
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Patent number: 11818958Abstract: A vibration device includes a semiconductor substrate having a first surface and a second surface, an integrated circuit disposed on the first surface, a first terminal which is disposed on the second surface and to which a substrate potential is applied, a second terminal which is disposed on the second surface and to which a potential different from the substrate potential is applied, a first through electrode which is configured to electrically couple the first terminal and the integrated circuit to each other, a second through electrode which is configured to electrically couple the second terminal and the integrated circuit to each other, a frame which has an insulating property, a vibration element disposed on the first surface, and a lid bonded to the first surface, wherein the first through electrode is located outside the frame, and the second through electrode is located inside the frame.Type: GrantFiled: September 28, 2020Date of Patent: November 14, 2023Assignee: SEIKO EPSON CORPORATIONInventor: Koichi Mizugaki
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Publication number: 20230291353Abstract: A circuit board includes: a semiconductor substrate including a first surface and a second surface located at an opposite side from the first surface; a circuit provided at a first surface side; a first external electrode provided at a second surface side; a heater provided at the second surface side; and a plurality of through electrodes penetrating the first surface and the second surface and electrically coupling the circuit and the first external electrode or the heater. The heater and the first external electrode do not overlap each other in a plan view.Type: ApplicationFiled: March 9, 2023Publication date: September 14, 2023Inventor: Koichi Mizugaki
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Publication number: 20230208388Abstract: A vibrator device includes: a base having a first surface and a second surface in a front-back relationship with each other; a circuit element located at a first surface side of the base and having a third surface at the first surface side and a fourth surface in a front-back relationship with the third surface; a vibrator element located at a fourth surface side of the circuit element; a first bonding member that bonds the base to the circuit element; a second bonding member that bonds the circuit element to the vibrator element; and a lid bonded to the base so as to form a cavity that accommodates the circuit element and the vibrator element between the lid and the base, in which at least a part of the second bonding member overlaps the first bonding member in a plan view of the circuit element.Type: ApplicationFiled: December 22, 2022Publication date: June 29, 2023Inventor: Koichi Mizugaki
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Patent number: 11690297Abstract: A vibration device includes a substrate having a first surface and a second surface at an opposite side to the first surface, a vibration element disposed on the first surface, a first through electrode which penetrates the substrate, and is configured to electrically couple the power supply interconnection disposed on the second surface and the first circuit block disposed on the first surface, and a second through electrode which penetrates the substrate, and is configured to electrically couple the power supply interconnection and the second circuit block including an analog circuit disposed on the first circuit, wherein R1>R4 and R2>R4, in which R1 is an electric resistance of the first through electrode, R2 is an electric resistance of the second through electrode, and R4 is an electric resistance of a zone of the power supply interconnection coupling the first through electrode and the second through electrode.Type: GrantFiled: November 19, 2020Date of Patent: June 27, 2023Assignee: SEIKO EPSON CORPORATIONInventor: Koichi Mizugaki
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Patent number: 11575079Abstract: A vibration device includes a semiconductor substrate having a first surface and a second surface in an obverse-reverse relationship, a vibration element disposed on the first surface, a lid bonded to the first surface, an integrated circuit disposed on the first surface, a terminal disposed on the second surface, a through electrode which penetrates the semiconductor substrate, and is configured to electrically couple the terminal and the integrated circuit to each other, and a first capacitor which is provided with a first recess provided to the semiconductor substrate and opening in the first surface, an insulating film disposed on an inside surface of the first recess, and an electrically-conductive material filling the first recess, and has a first capacitance between the electrically-conductive material and the semiconductor substrate, wherein the electrically-conductive material does not have contact with the terminal at the second surface side.Type: GrantFiled: September 24, 2020Date of Patent: February 7, 2023Assignee: SEIKO EPSON CORPORATIONInventor: Koichi Mizugaki
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Patent number: 11404626Abstract: A vibrator device including a vibrator element, an IC substrate including a semiconductor substrate configured of a semiconductor having a first conductive type and a circuit electrically coupled to the vibrator element, the first conductive type being any one of an N-type and a P-type, and a lid directly bonded to the semiconductor substrate and configured of a semiconductor having the first conductive type.Type: GrantFiled: August 15, 2019Date of Patent: August 2, 2022Assignee: Seiko Epson CorporationInventor: Koichi Mizugaki
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Patent number: 11097667Abstract: A vibration device includes a first substrate including a first surface and a second surface opposite to the first surface; a second substrate including a third surface bonded to the second surface thereby forming an accommodation space between the first substrate and the second substrate, and a fourth surface opposite to the third surface; a vibration element accommodated in the accommodation space; and a first external coupling terminal arranged at the fourth surface and having a first position to where a first wire to be coupled. The first position being within an area overlapping a bonding area between the first substrate and the second substrate, as viewed in a plan view.Type: GrantFiled: December 27, 2019Date of Patent: August 24, 2021Assignee: SEIKO EPSON CORPORATIONInventor: Koichi Mizugaki
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Publication number: 20210159385Abstract: A vibration device includes a substrate having a first surface and a second surface at an opposite side to the first surface, a vibration element disposed on the first surface, a first through electrode which penetrates the substrate, and is configured to electrically couple the power supply interconnection disposed on the second surface and the first circuit block disposed on the first surface, and a second through electrode which penetrates the substrate, and is configured to electrically couple the power supply interconnection and the second circuit block including an analog circuit disposed on the first circuit, wherein R1>R4 and R2>R4, in which R1 is an electric resistance of the first through electrode, R2 is an electric resistance of the second through electrode, and R4 is an electric resistance of a zone of the power supply interconnection coupling the first through electrode and the second through electrode.Type: ApplicationFiled: November 19, 2020Publication date: May 27, 2021Inventor: Koichi Mizugaki
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Publication number: 20210098680Abstract: A vibration device includes a semiconductor substrate having a first surface and a second surface in an obverse-reverse relationship, a vibration element disposed on the first surface, a lid bonded to the first surface, an integrated circuit disposed on the first surface, a terminal disposed on the second surface, a through electrode which penetrates the semiconductor substrate, and is configured to electrically couple the terminal and the integrated circuit to each other, and a first capacitor which is provided with a first recess provided to the semiconductor substrate and opening in the first surface, an insulating film disposed on an inside surface of the first recess, and an electrically-conductive material filling the first recess, and has a first capacitance between the electrically-conductive material and the semiconductor substrate, wherein the electrically-conductive material does not have contact with the terminal at the second surface side.Type: ApplicationFiled: September 24, 2020Publication date: April 1, 2021Inventor: Koichi Mizugaki
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Publication number: 20210098682Abstract: A vibration device includes a semiconductor substrate having a first surface and a second surface, an integrated circuit disposed on the first surface, a first terminal which is disposed on the second surface and to which a substrate potential is applied, a second terminal which is disposed on the second surface and to which a potential different from the substrate potential is applied, a first through electrode which is configured to electrically couple the first terminal and the integrated circuit to each other, a second through electrode which is configured to electrically couple the second terminal and the integrated circuit to each other, a frame which has an insulating property, a vibration element disposed on the first surface, and a lid bonded to the first surface, wherein the first through electrode is located outside the frame, and the second through electrode is located inside the frame.Type: ApplicationFiled: September 28, 2020Publication date: April 1, 2021Inventor: Koichi Mizugaki
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Patent number: 10879868Abstract: A vibration device includes a first substrate that includes a first surface and a second surface; a second substrate that includes a third surface and a fourth surface; an intermediate substrate that is disposed between the first substrate and the second substrate and that includes a vibration element, a frame surrounding the vibration element, and a coupler linking the vibration element and the frame; a conductive first joining member that is located between the frame and the first substrate and that joins the frame and the second surface; a conductive second joining member that is located between the frame and the second substrate and that joins the frame and the third surface; an internal electrode disposed on the first substrate; and a first conductive member that is disposed between the first substrate and the intermediate substrate and that electrically couples the vibration element and the internal electrode.Type: GrantFiled: December 27, 2019Date of Patent: December 29, 2020Assignee: SEIKO EPSON CORPORATIONInventor: Koichi Mizugaki
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Patent number: 10843637Abstract: A vibration device includes: a base substrate which is a first conductivity type semiconductor substrate; a lid substrate; a vibration element disposed between the base substrate and the lid substrate; a wiring disposed on a surface of the base substrate at the lid substrate side; and a coupling member that electrically couples the wiring and the vibration element to each other. The base substrate includes a second conductivity type well, which is different from the first conductivity type, and a first conductivity type first contact area that is disposed in the well and that has a first contact surface which is a part of the surface. The wiring and the coupling member are in contact with the first contact surface, and are electrically coupled to each other via the first contact area.Type: GrantFiled: December 27, 2019Date of Patent: November 24, 2020Assignee: SEIKO EPSON CORPORATIONInventor: Koichi Mizugaki
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Publication number: 20200207282Abstract: A vibration device includes: a base substrate which is a first conductivity type semiconductor substrate; a lid substrate; a vibration element disposed between the base substrate and the lid substrate; a wiring disposed on a surface of the base substrate at the lid substrate side; and a coupling member that electrically couples the wiring and the vibration element to each other. The base substrate includes a second conductivity type well, which is different from the first conductivity type, and a first conductivity type first contact area that is disposed in the well and that has a first contact surface which is a part of the surface. The wiring and the coupling member are in contact with the first contact surface, and are electrically coupled to each other via the first contact area.Type: ApplicationFiled: December 27, 2019Publication date: July 2, 2020Applicant: SEIKO EPSON CORPORATIONInventor: Koichi MIZUGAKI
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Publication number: 20200207283Abstract: A vibration device includes a first substrate including a first surface and a second surface opposite to the first surface; a second substrate including a third surface bonded to the second surface thereby forming an accommodation space between the first substrate and the second substrate, and a fourth surface opposite to the third surface; a vibration element accommodated in the accommodation space; and a first external coupling terminal arranged at the fourth surface and having a first position to where a first wire to be coupled. The first position being within an area overlapping a bonding area between the first substrate and the second substrate, as viewed in a plan view.Type: ApplicationFiled: December 27, 2019Publication date: July 2, 2020Applicant: SEIKO EPSON CORPORATIONInventor: Koichi MIZUGAKI
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Publication number: 20200212874Abstract: A vibration device includes a first substrate that includes a first surface and a second surface; a second substrate that includes a third surface and a fourth surface; an intermediate substrate that is disposed between the first substrate and the second substrate and that includes a vibration element, a frame surrounding the vibration element, and a coupler linking the vibration element and the frame; a conductive first joining member that is located between the frame and the first substrate and that joins the frame and the second surface; a conductive second joining member that is located between the frame and the second substrate and that joins the frame and the third surface; an internal electrode disposed on the first substrate; and a first conductive member that is disposed between the first substrate and the intermediate substrate and that electrically couples the vibration element and the internal electrode.Type: ApplicationFiled: December 27, 2019Publication date: July 2, 2020Applicant: SEIKO EPSON CORPORATIONInventor: Koichi MIZUGAKI
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Publication number: 20200058843Abstract: A vibrator device including a vibrator element, an IC substrate including a semiconductor substrate configured of a semiconductor having a first conductive type and a circuit electrically coupled to the vibrator element, the first conductive type being any one of an N-type and a P-type, and a lid directly bonded to the semiconductor substrate and configured of a semiconductor having the first conductive type.Type: ApplicationFiled: August 15, 2019Publication date: February 20, 2020Inventor: Koichi MIZUGAKI
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Patent number: 8888229Abstract: A method for forming a layer comprises (a) disposing a first droplet to two parts on an underlayer surface so as to form two dot patterns isolated each other on the underlayer surface, (b) fixing the two dot patterns to the underlayer surface, (c) giving lyophilicity with respect to a second droplet to at least the underlayer surface between the two dot patterns, and (d) disposing the second droplet to the underlayer surface between the two dot patterns so as to join the two dot patterns after the step (c).Type: GrantFiled: August 25, 2006Date of Patent: November 18, 2014Assignee: Seiko Epson CorporationInventors: Tsuyoshi Shintate, Koichi Mizugaki, Kazuaki Sakurada, Kenji Wada
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Patent number: 7839372Abstract: An electrooptic apparatus substrate and examination method therefor can be provided which can implement an examination without requiring bringing a probe into contact thereto from the outside and with satisfactory measuring accuracy. A substrate 1 of the present invention includes a video line 7 and transmission date portion 6 through multiple switching elements for writing a first potential signal in multiple pixels through a signal line. The substrate 1 further includes a display data reading circuit portion 4 having a differential amplifier 4a for lowering a lower potential and heightening a higher potential and outputting it to the signal line and a transmission gate portion 6 and video line 7 for reading the first potential signal and a reference second potential signal.Type: GrantFiled: August 8, 2005Date of Patent: November 23, 2010Assignee: Seiko Epson CorporationInventors: Tatsuya Ishii, Shigefumi Yamaji, Koichi Mizugaki
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Patent number: 7798592Abstract: A droplet ejection head drive method includes (1) associating multiple nozzles with ranks corresponding to weights of droplets ejected from the nozzles, (2) generating drive waveforms for driving actuators of the nozzles and correcting the weights of the droplets to a predetermined weight, for each of the ranks, and (3) supplying the drive waveforms corresponding to the ranks of some of the nozzles selected according to drawing data, to actuators of the selected nozzles and ejecting droplets each having the predetermined weight from the selected nozzles onto a target.Type: GrantFiled: November 30, 2007Date of Patent: September 21, 2010Assignee: Seiko Epson CorporationInventor: Koichi Mizugaki