Patents by Inventor Seiichiro Yamaguchi

Seiichiro Yamaguchi 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).

  • Patent number: 11940275
    Abstract: A vibrator device includes a vibrator element, and a support substrate configured to support the vibrator element. The vibrator element includes a drive arm provided with a drive signal electrode and a drive constant-potential electrode, and a detection arm provided with a detection signal electrode and a detection constant-potential electrode. The support substrate includes a base, and a drive signal interconnection electrically coupled to the drive signal electrode, a drive constant-potential interconnection electrically coupled to the drive constant-potential electrode, and a detection signal interconnection electrically coupled to the detection signal electrode all provided to the base, and the drive arm includes a first surface located at the support substrate side, and a second surface located at an opposite side to the first surface. Further, the drive constant-potential electrode is disposed on the first surface, and the drive signal electrode is disposed on the second surface.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: March 26, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Seiichiro Ogura, Keiichi Yamaguchi, Ryuta Nishizawa
  • Publication number: 20240069057
    Abstract: An angular velocity detection element includes: a drive vibration arm configured to perform flexural vibration according to an applied drive signal; and a detection vibration arm configured to perform flexural vibration according to an applied angular velocity. Each of the drive vibration arm and the detection vibration arm has a bottomed groove portion along an extending direction. d2/t2>d1/t1, in which t1 is a thickness of the drive vibration arm, d1 is a depth of the groove portion of the drive vibration arm, t2 is a thickness of the detection vibration arm, and d2 is a depth of the groove portion of the detection vibration arm.
    Type: Application
    Filed: August 28, 2023
    Publication date: February 29, 2024
    Inventors: Seiichiro OGURA, Keiichi YAMAGUCHI, Ryuta NISHIZAWA
  • Patent number: 11916538
    Abstract: A vibrator device includes a vibrating body having obverse and reverse principal surfaces and a side surface connecting the obverse and reverse principal surfaces to each other, a package configured to house the vibrating body, and a bonding material configured to fix the vibrating body to the package, wherein the vibrating body has a coupling part including a recess recessed from the side surface toward a center of the principal surfaces, and a protrusion protruding from a side surface of the recess, the protrusion is one of breaking-off parts with which a plurality of the vibrating bodies is broken off from a wafer to which the plurality of the vibrating bodies is coupled, and the bonding material has contact with a side surface of the protrusion in the recess.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: February 27, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Seiichiro Ogura, Keiichi Yamaguchi, Ryuta Nishizawa
  • Patent number: 11122693
    Abstract: Described are processes for developing laminated circuit boards, as well as the resulting circuit boards themselves. Accordingly, at least two circuit boards at least partially overlap each other, and at least one through-hole is formed in an overlapping region thereof. The through-hole is filled with an electrically-conductive material, forming a through-via that enables the circuit boards to be electrically connected. When a circuit on each circuit board is laid out so that a part thereof reaches a region in which the through-via is to be formed, then that part of the circuit can be electrically connected to the through-via. Thus, portions of the circuits on the circuit boards can be electrically connected to each other via common through-vias to realize an integrated device in which the circuits on the laminated circuit boards function.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: September 14, 2021
    Assignee: Pi-Crystal Incorporation
    Inventors: Junichi Takeya, Seiichiro Yamaguchi, Masataka Itoh
  • Patent number: 10451943
    Abstract: Active matrix array devices are constituted by devices that have a function such as those of a display/light emitting device, a sensor, a memory or an actuator, and are arranged in a matrix array shape, and the expansion of usage in various fields and applications is expected. However, there is little similarity and compatibility in the forming process and materials between a device such as a display/light emitting device, a sensor, a memory, or an actuator, and a circuit portion that controls such a device in the matrix element, and therefore the device and the circuit portion are mutually restricting factors. This results in an increase in the manufacturing cost and limitation of the function. A conventional active matrix array device is manufactured by performing various process steps on the same substrate. Control circuit portions each including a transistor are formed in some of the process steps.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: October 22, 2019
    Assignee: PI-CRYSTAL INC.
    Inventors: Seiichiro Yamaguchi, Junichi Takeya, Masataka Itoh, Norikazu Shomoto, Mina Uematsu
  • Publication number: 20190313535
    Abstract: Research on practical realization of various types of printable devices has progressed, and the realization of devices in which these printable devices are integrated on a flexible board is expected. However, there is the problem that, if a plurality of printable devices are simply integrated on the same board, the area of the integrated device increases, and the yield ratio greatly decreases. An integration technique that solves the problem of an increase in the area and a decrease in the yield ratio is in demand. Electronic devices to be integrated are formed on individual boards, the boards are laid to overlap each other in a predetermined relationship, and then through-vias are formed at predetermined positions. With this, the electronic devices are electrically connected to each other, and function as an integrated device.
    Type: Application
    Filed: June 24, 2019
    Publication date: October 10, 2019
    Inventors: Junichi TAKEYA, Seiichiro YAMAGUCHI, Masataka ITOH
  • Publication number: 20190244942
    Abstract: An active matrix LED display formed on a substrate material having flexibility is provided. The display includes a pixel forming unit having at least one pixel driving circuit and at least one inorganic LED element electrically connected with the pixel driving circuit. The pixel driving circuit is formed of at least one thin film transistor, and the thin film transistor is an organic thin film transistor.
    Type: Application
    Filed: April 18, 2019
    Publication date: August 8, 2019
    Applicant: ORGANO-CIRCUIT INCORPORATION
    Inventors: Seiichiro Yamaguchi, Junichi Takeya, Tomonori Matsumuro
  • Publication number: 20180107083
    Abstract: Active matrix array devices are constituted by devices that have a function such as those of a display/light emitting device, a sensor, a memory or an actuator, and are arranged in a matrix array shape, and the expansion of usage in various fields and applications is expected. However, there is little similarity and compatibility in the forming process and materials between a device such as a display/light emitting device, a sensor, a memory, or an actuator, and a circuit portion that controls such a device in the matrix element, and therefore the device and the circuit portion are mutually restricting factors. This results in an increase in the manufacturing cost and limitation of the function. A conventional active matrix array device is manufactured by performing various process steps on the same substrate. Control circuit portions each including a transistor are formed in some of the process steps.
    Type: Application
    Filed: April 20, 2016
    Publication date: April 19, 2018
    Inventors: Seiichiro YAMAGUCHI, Junichi TAKEYA, Masataka ITOH, Norikazu SHOMOTO, Mina UEMATSU
  • Publication number: 20170374746
    Abstract: Research on practical realization of various types of printable devices has progressed, and the realization of devices in which these printable devices are integrated on a flexible board is expected. However, there is the problem that, if a plurality of printable devices are simply integrated on the same board, the area of the integrated device increases, and the yield ratio greatly decreases. An integration technique that solves the problem of an increase in the area and a decrease in the yield ratio is in demand. Electronic devices to be integrated are formed on individual boards, the boards are laid to overlap each other in a predetermined relationship, and then through-vias are formed at predetermined positions. With this, the electronic devices are electrically connected to each other, and function as an integrated device.
    Type: Application
    Filed: August 14, 2017
    Publication date: December 28, 2017
    Inventors: Junichi TAKEYA, Seiichiro YAMAGUCHI, Masataka ITOH
  • Patent number: 8935146
    Abstract: A simulation instructing unit instructs a simulation unit, which generates signal characteristics, to generate the signal characteristics. A characteristic value extracting unit extracts, from the signal characteristics, characteristic values for distinguishing between a signal characteristic generated by setting a first simulation parameter and a signal characteristic generated by a second simulation parameter. A simulation parameter determining unit determines a first mapping relationship from the characteristic values to the simulation parameters with the characteristic values obtained by setting a plurality of set values in the simulation parameters and with the set values.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: January 13, 2015
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Hiroshi Arimoto, Seiichiro Yamaguchi
  • Patent number: 8381158
    Abstract: A recording medium stores a verification program that causes a computer to execute detecting from a model circuit, a first circuit representing junction of a source region and a substrate region and including a junction resistance and a junction capacitance, a second circuit parallel to the first circuit, representing junction of a drain region and the substrate region, and including a junction resistance and a junction capacitance equivalent to the junction resistance and capacitance of the first circuit, and a connection resistance connecting the circuits and a substrate electrode; calculating, using the junction resistances and connection resistance, a first coefficient indicating impact of the junction resistances and connection resistance on amplitude variation; calculating, using the junction capacitances and connection resistance, a second coefficient indicating impact of the junction capacitances and connection resistance on phase variation; correcting the junction capacitances using a sum of the coef
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: February 19, 2013
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Hiroki Miyaoka, Seiichiro Yamaguchi, Tsuyoshi Sakata
  • Publication number: 20110202895
    Abstract: A recording medium stores a verification program that causes a computer to execute detecting from a model circuit, a first circuit representing junction of a source region and a substrate region and including a junction resistance and a junction capacitance, a second circuit parallel to the first circuit, representing junction of a drain region and the substrate region, and including a junction resistance and a junction capacitance equivalent to the junction resistance and capacitance of the first circuit, and a connection resistance connecting the circuits and a substrate electrode; calculating, using the junction resistances and connection resistance, a first coefficient indicating impact of the junction resistances and connection resistance on amplitude variation; calculating, using the junction capacitances and connection resistance, a second coefficient indicating impact of the junction capacitances and connection resistance on phase variation; correcting the junction capacitances using a sum of the coef
    Type: Application
    Filed: February 3, 2011
    Publication date: August 18, 2011
    Applicant: FUJITSU SEMICONDUCTOR LIMITED
    Inventors: Hiroki Miyaoka, Seiichiro Yamaguchi, Tsuyoshi Sakata
  • Publication number: 20080221854
    Abstract: A simulation instructing unit instructs a simulation unit, which generates signal characteristics, to generate the signal characteristics. A characteristic value extracting unit extracts, from the signal characteristics, characteristic values for distinguishing between a signal characteristic generated by setting a first simulation parameter and a signal characteristic generated by a second simulation parameter. A simulation parameter determining unit determines a first mapping relationship from the characteristic values to the simulation parameters with the characteristic values obtained by setting a plurality of set values in the simulation parameters and with the set values.
    Type: Application
    Filed: March 4, 2008
    Publication date: September 11, 2008
    Applicant: FUJITSU LIMITED
    Inventors: Hiroshi ARIMOTO, Seiichiro YAMAGUCHI
  • Patent number: 6867106
    Abstract: The semiconductor device comprises: a conducting layer including: a channel region; a source region and a drain region sandwiching the channel region; and a body region connected to the channel region and being adjacent to the source region and the drain region; a gate electrode formed above the channel region interposing a gate insulation film therebetween; a dummy electrode formed on the body region near the interface between at least the drain region and the body region, and electrically insulated with the gate electrode; and a body contact region formed in the body region except a region where the dummy electrode is formed. The gate electrode and the dummy electrode are electrically insulated with each other, whereby the semiconductor device having body contacts can have a gate capacitance much decreased. Accordingly, deterioration of the speed performance of the transistors can be suppressed.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: March 15, 2005
    Assignee: Fujitsu Limited
    Inventors: Seiichiro Yamaguchi, Mitsuaki Kai, Isao Amano
  • Patent number: 6753574
    Abstract: The semiconductor device includes: a conducting layer including: a channel region; a source region and a drain region sandwiching the channel region; and a body region connected to the channel region and being adjacent to the source region and the drain region; a gate electrode formed above the channel region interposing a gate insulation film therebetween; a dummy electrode formed on the body region near the interface between at least the drain region and the body region, and electrically insulated with the gate electrode; and a body contact region formed in the body region except a region where the dummy electrode is formed. The gate electrode and the dummy electrode are electrically insulated with each other, whereby the semiconductor device having body contacts can have a gate capacitance much decreased. Accordingly, deterioration of the speed performance of the transistors can be suppressed.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: June 22, 2004
    Assignee: Fujitsu Limited
    Inventors: Seiichiro Yamaguchi, Mitsuaki Kai, Isao Amano
  • Publication number: 20030132464
    Abstract: The semiconductor device comprises: a conducting layer including: a channel region; a source region and a drain region sandwiching the channel region; and a body region connected to the channel region and being adjacent to the source region and the drain region; a gate electrode formed above the channel region interposing a gate insulation film therebetween; a dummy electrode formed on the body region near the interface between at least the drain region and the body region, and electrically insulated with the gate electrode; and a body contact region formed in the body region except a region where the dummy electrode is formed. The gate electrode and the dummy electrode are electrically insulated with each other, whereby the semiconductor device having body contacts can have a gate capacitance much decreased. Accordingly, deterioration of the speed performance of the transistors can be suppressed.
    Type: Application
    Filed: December 30, 2002
    Publication date: July 17, 2003
    Applicant: FUJITSU LIMITED
    Inventors: Seiichiro Yamaguchi, Mitsuaki Kai, Isao Amano
  • Publication number: 20020140455
    Abstract: NMOS transistors N3 and N3S are connected in series between a PMOS transistor P1 and an NMOS transistor N1S constituting a first inverter connected between a power supply potential VDD2, which satisfies VDD1<VDD2, and a ground potential VSS, and likewise, NMOS transistors N4 and N4S are connected in series between a PMOS transistor P2 and an NMOS transistor N2S constituting a second inverter. The gate insulating films of the MOS transistors P1, P2, N3 and N4 are thicker than those of the transistors N1S and N4S. The gates of the NMOS transistors N3 and N4 are connected to VDD2, the gates of NMOS transistors N3S and N4S are connected to VDD1 and these transistors are constantly on.
    Type: Application
    Filed: November 20, 2001
    Publication date: October 3, 2002
    Applicant: FUJITSU LIMITED
    Inventor: Seiichiro Yamaguchi
  • Publication number: 20020048972
    Abstract: The semiconductor device comprises: a conducting layer including: a channel region; a source region and a drain region sandwiching the channel region; and a body region connected to the channel region and being adjacent to the source region and the drain region; a gate electrode formed above the channel region interposing a gate insulation film therebetween; a dummy electrode formed on the body region near the interface between at least the drain region and the body region, and electrically insulated with the gate electrode; and a body contact region formed in the body region except a region where the dummy electrode is formed. The gate electrode and the dummy electrode are electrically insulated with each other, whereby the semiconductor device having body contacts can have a gate capacitance much decreased. Accordingly, deterioration of the speed performance of the transistors can be suppressed.
    Type: Application
    Filed: March 23, 2001
    Publication date: April 25, 2002
    Applicant: Fujitsu Limited
    Inventors: Seiichiro Yamaguchi, Mitsuaki Kai, Isao Amano
  • Patent number: 5786115
    Abstract: A mask includes a transparent layer which is transparent with respect to a light which is used for an exposure, and a mask pattern layer which is formed on the transparent layer. At least a portion of the mask pattern layer is made up solely of a phase shift layer for transmitting the light, so that a phase shift occurs between a phase of the light transmitted through the phase shift layer and a phase of the light transmitted through a portion of the mask having no phase shift layer.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: July 28, 1998
    Assignee: Fujitsu Limited
    Inventors: Toshiaki Kawabata, Kenji Nakagawa, Seiichiro Yamaguchi, Masao Taguchi, Kazuhiko Sumi, Yuichiro Yanagishita
  • Patent number: 5674646
    Abstract: A mask includes a transparent layer which is transparent with respect to a light which is used for an exposure, and a mask pattern layer which is formed on the transparent layer. At least a portion of the mask pattern layer is made up solely of a phase shift layer for transmitting the light, so that a phase shift occurs between a phase of the light transmitted through the phase shift layer and a phase of the light transmitted through a portion of the mask having no phase shift layer.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: October 7, 1997
    Assignee: Fujitsu Ltd.
    Inventors: Toshiaki Kawabata, Kenji Nakagawa, Seiichiro Yamaguchi, Masao Taguchi, Kazuhiko Sumi, Yuichiro Yanagishita