Patents by Inventor Takehiko Kubota

Takehiko Kubota 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: 9917145
    Abstract: A light-emitting device includes a drive transistor for controlling the quantity of current supplied to a light-emitting element, a capacitor element electrically connected to a gate electrode of the drive transistor, and an electrical continuity portion for electrically connecting the drive transistor and the light-emitting element, these elements being disposed on a substrate. The electrical continuity portion is disposed on the side opposite to the capacitor element with the drive transistor disposed therebetween.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: March 13, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
  • Publication number: 20170287941
    Abstract: An electro-optical device includes one or more control lines that include a scanning line, a data line and a pixel circuit. The pixel circuit has a drive transistor, a write-in transistor with a gate which is electrically connected to the scanning line, a light-emitting element that emits light at a brightness that depends on the size of a current that is supplied through the drive transistor, and a control line which overlaps the gate of the drive transistor when viewed from a direction that is perpendicular to a surface of a substrate on which the pixel circuit is formed is included in the one or more control lines.
    Type: Application
    Filed: June 21, 2017
    Publication date: October 5, 2017
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi TOYA, Takehiko KUBOTA
  • Patent number: 9721506
    Abstract: An electro-optical device includes one or more control lines that include a scanning line, a data line and a pixel circuit. The pixel circuit has a drive transistor, a write-in transistor with a gate which is electrically connected to the scanning line, a light-emitting element that emits light at a brightness that depends on the size of a current that is supplied through the drive transistor, and a control line which overlaps the gate of the drive transistor when viewed from a direction that is perpendicular to a surface of a substrate on which the pixel circuit is formed is included in the one or more control lines.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: August 1, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takashi Toya, Takehiko Kubota
  • Patent number: 9666133
    Abstract: An electro-optical device comprises a substrate, a scanning line, a data line, a pixel circuit, and a first storage capacitor holding a first voltage corresponding to a data signal. The first storage capacitor includes a first portion and a second portion connected in parallel. The first portion and the second portion overlap when viewed from a direction orthogonal with respect to the first main surface.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: May 30, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takehiko Kubota, Takeshi Nomura, Hitoshi Ota
  • Publication number: 20160276423
    Abstract: A light-emitting device includes a drive transistor for controlling the quantity of current supplied to a light-emitting element, a capacitor element electrically connected to a gate electrode of the drive transistor, and an electrical continuity portion for electrically connecting the drive transistor and the light-emitting element, these elements being disposed on a substrate. The electrical continuity portion is disposed on the side opposite to the capacitor element with the drive transistor disposed therebetween.
    Type: Application
    Filed: May 27, 2016
    Publication date: September 22, 2016
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takehiko KUBOTA, Eiji KANDA, Ryoichi NOZAWA
  • Publication number: 20160247448
    Abstract: An electro-optical device includes one or more control lines that include a scanning line, a data line and a pixel circuit. The pixel circuit has a drive transistor, a write-in transistor with a gate which is electrically connected to the scanning line, a light-emitting element that emits light at a brightness that depends on the size of a current that is supplied through the drive transistor, and a control line which overlaps the gate of the drive transistor when viewed from a direction that is perpendicular to a surface of a substrate on which the pixel circuit is formed is included in the one or more control lines.
    Type: Application
    Filed: May 2, 2016
    Publication date: August 25, 2016
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi TOYA, Takehiko KUBOTA
  • Publication number: 20160194180
    Abstract: In an elevator control apparatus, a DC-DC converter including a first switching element and a second switching element is configured to generate power for driving an elevator brake by alternately operating each of the first switching element and the second switching element. A first photocoupler and a second photocoupler are configured to independently operate the first switching element and the second switching element, respectively. A first calculation unit and a second calculation unit are configured to independently control power supply voltages of the first photocoupler and the second photocoupler, respectively.
    Type: Application
    Filed: September 27, 2013
    Publication date: July 7, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Takehiko KUBOTA
  • Patent number: 9379172
    Abstract: A light-emitting device includes a drive transistor for controlling the quantity of current supplied to a light-emitting element, a capacitor element electrically connected to a gate electrode of the drive transistor, and an electrical continuity portion for electrically connecting the drive transistor and the light-emitting element, these elements being disposed on a substrate. The electrical continuity portion is disposed on the side opposite to the capacitor element with the drive transistor disposed therebetween.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: June 28, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
  • Patent number: 9361830
    Abstract: An electro-optical device includes one or more control lines that include a scanning line, a data line and a pixel circuit. The pixel circuit has a drive transistor, a write-in transistor with a gate which is electrically connected to the scanning line, a light-emitting element that emits light at a brightness that depends on the size of a current that is supplied through the drive transistor, and a control line which overlaps the gate of the drive transistor when viewed from a direction that is perpendicular to a surface of a substrate on which the pixel circuit is formed is included in the one or more control lines.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: June 7, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Toya, Takehiko Kubota
  • Patent number: 9250373
    Abstract: In an optical system, first green light reflected by a first diffractive optical element propagates in a left direction by repeating total reflection within a first light guide unit, is reflected by a third diffractive optical element, and is guided to a left eye. First red light reflected by a fifth diffractive optical element propagates in a left direction by repeating total reflection within a second light guide unit, is reflected by a seventh diffractive optical element, and is guided to a left eye. First blue light reflected by a ninth diffractive optical element is reflected by an eleventh diffractive optical element, and is guided to a left eye.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: February 2, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takehiko Kubota
  • Publication number: 20150379933
    Abstract: An electro-optical device comprises a substrate, a scanning line, a data line, a pixel circuit, and a first storage capacitor holding a first voltage corresponding to a data signal. The first storage capacitor includes a first portion and a second portion connected in parallel. The first portion and the second portion overlap when viewed from a direction orthogonal with respect to the first main surface.
    Type: Application
    Filed: September 4, 2015
    Publication date: December 31, 2015
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takehiko KUBOTA, Takeshi NOMURA, Hitoshi OTA
  • Patent number: 9164601
    Abstract: An electro-optical device comprises a substrate, a scanning line, a data line, a pixel circuit, and a first storage capacitor holding a first voltage corresponding to a data signal. The first storage capacitor includes a first portion and a second portion connected in parallel. The first portion and the second portion overlap when viewed from a direction orthogonal with respect to the first main surface.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: October 20, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takehiko Kubota, Takeshi Nomura, Hitoshi Ota
  • Publication number: 20150213760
    Abstract: An electro-optical device includes one or more control lines that include a scanning line, a data line and a pixel circuit. The pixel circuit has a drive transistor, a write-in transistor with a gate which is electrically connected to the scanning line, a light-emitting element that emits light at a brightness that depends on the size of a current that is supplied through the drive transistor, and a control line which overlaps the gate of the drive transistor when viewed from a direction that is perpendicular to a surface of a substrate on which the pixel circuit is formed is included in the one or more control lines.
    Type: Application
    Filed: April 3, 2015
    Publication date: July 30, 2015
    Inventors: Takashi TOYA, Takehiko KUBOTA
  • Patent number: 9070649
    Abstract: A light-emitting device includes a drive transistor for controlling the quantity of current supplied to a light-emitting element, a capacitor element electrically connected to a gate electrode of the drive transistor, and an electrical continuity portion for electrically connecting the drive transistor and the light-emitting element, these elements being disposed on a substrate. The electrical continuity portion is disposed on the side opposite to the capacitor element with the drive transistor disposed therebetween.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: June 30, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
  • Patent number: 9066388
    Abstract: A light-emitting device includes a drive transistor that controls a current to be supplied to a light-emitting element from a power supply line, an element continuity portion that electrically connects the drive transistor with the light-emitting element, an initializing transistor that is turned ON to diode-connect the drive transistor, and a connecting portion that electrically connects the drive transistor with the initializing transistor. The power supply line includes a first portion extending in a predetermined direction. The element continuity portion and the connecting portion are formed from the same layer as that of the power supply line and are located on one side along the width of the first portion across the drive transistor.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: June 23, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
  • Patent number: 9030390
    Abstract: An electro-optical device includes one or more control lines that include a scanning line, a data line and a pixel circuit. The pixel circuit has a drive transistor, a write-in transistor with a gate which is electrically connected to the scanning line, a light-emitting element that emits light at a brightness that depends on the size of a current that is supplied through the drive transistor, and a control line which overlaps the gate of the drive transistor when viewed from a direction that is perpendicular to a surface of a substrate on which the pixel circuit is formed is included in the one or more control lines.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: May 12, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Toya, Takehiko Kubota
  • Publication number: 20150060865
    Abstract: A light-emitting device includes a drive transistor for controlling the quantity of current supplied to a light-emitting element, a capacitor element electrically connected to a gate electrode of the drive transistor, and an electrical continuity portion for electrically connecting the drive transistor and the light-emitting element, these elements being disposed on a substrate. The electrical continuity portion is disposed on the side opposite to the capacitor element with the drive transistor disposed therebetween.
    Type: Application
    Filed: November 6, 2014
    Publication date: March 5, 2015
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takehiko KUBOTA, Eiji KANDA, Ryoichi NOZAWA
  • Patent number: 8937316
    Abstract: A light-emitting device includes a drive transistor for controlling the quantity of current supplied to a light-emitting element, a capacitor element electrically connected to a gate electrode of the drive transistor, and an electrical continuity portion for electrically connecting the drive transistor and the light-emitting element, these elements being disposed on a substrate. The electrical continuity portion is disposed on the side opposite to the capacitor element with the drive transistor disposed therebetween.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: January 20, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
  • Patent number: 8895990
    Abstract: A light-emitting device includes a drive transistor for controlling the quantity of current supplied to a light-emitting element, a capacitor element electrically connected to a gate electrode of the drive transistor, and an electrical continuity portion for electrically connecting the drive transistor and the light-emitting element, these elements being disposed on a substrate. The electrical continuity portion is disposed on the side opposite to the capacitor element with the drive transistor disposed therebetween.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: November 25, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Takehiko Kubota, Eiji Kanda, Ryoichi Nozawa
  • Publication number: 20140292221
    Abstract: A light-emitting device includes a drive transistor that controls a current to be supplied to a light-emitting element from a power supply line, an element continuity portion that electrically connects the drive transistor with the light-emitting element, an initializing transistor that is turned ON to diode-connect the drive transistor, and a connecting portion that electrically connects the drive transistor with the initializing transistor. The power supply line includes a first portion extending in a predetermined direction. The element continuity portion and the connecting portion are formed from the same layer as that of the power supply line and are located on one side along the width of the first portion across the drive transistor.
    Type: Application
    Filed: June 17, 2014
    Publication date: October 2, 2014
    Inventors: Takehiko KUBOTA, Eiji KANDA, Ryoichi NOZAWA