Patents by Inventor Hitoshi Ota

Hitoshi Ota 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: 11562694
    Abstract: A pixel circuit 16(n) and a pixel circuit 16(n?1) acquire a data signal from a data line 14. A selector 30(n) supplies the data signal acquired from the pixel circuit 16(n) to a light emitting element selected from the light emitting elements 18(n?1), 18(n), and 18(n+1). A selector 30(n?1) can select at least the light emitting element 18(n?1), and supplies the data signal acquired from the pixel circuit 16(n?1) to the selected destination. In a sub-frame B, the selector 30(n) selects the light emitting elements 18(n) and 18(n+1), and the selector 30(n?1) selects the light emitting element 18(n?1). In a sub-frame A, the selector 30(n) selects the light emitting elements 18(n?1) and 18(n).
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: January 24, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takeshi Koshihara, Hitoshi Ota, Takumi Kodama
  • Patent number: 11545531
    Abstract: A display device includes a substrate having a first side and a second side, a display region having a light-emitting element that includes an electrode, a pixel electrode disposed between the substrate and the electrode in a thickness direction of the substrate, and a light-emitting function layer disposed between the pixel electrode and the electrode in the thickness direction, a drive circuit disposed between the first side and the display region in plan view, and a conductive layer having a first portion extending between the first side and the display region in plan view and along the first direction, and a second portion extending between the second side and the display region in plan view and along the second direction, wherein a width of the first portion in the second direction is greater than a width of the second portion in the first direction.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: January 3, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Hitoshi Ota
  • Publication number: 20220416803
    Abstract: A DA conversion circuit includes a first DA conversion circuit unit corresponding to a higher bit, a second DA conversion circuit unit corresponding to a lower bit, a capacitance element provided between the first DA conversion circuit unit and the second DA conversion circuit unit, the first DA conversion circuit unit includes a capacitance element and a selection circuit, the second DA conversion circuit unit includes a capacitance element and a selection circuit, and the selection circuit supplies a potential VL or VPH to one end of the capacitance element, and the selection circuit supplies the potential VL or VPL to one end of the capacitance element. The potential VPL is different from the potential VPH, and for example, VPL>VPH.
    Type: Application
    Filed: June 23, 2022
    Publication date: December 29, 2022
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hitoshi OTA
  • Publication number: 20220415265
    Abstract: A first capacitance element provided corresponding to a bit D0, a second capacitance element provided corresponding to a bit D1, and a third capacitance element and a fourth capacitance element provided corresponding to a bit D2, and electrically coupled in parallel are included. An area S1 where electrodes of the first capacitance element overlap in plan view is smaller than half an area S2 where electrodes of the second capacitance element overlap in plan view, an area in which electrodes of the third capacitance element overlap in plan view is substantially the same as the area S2, and an area where electrodes of the fourth capacitance element overlap in plan view is substantially the same as the area S2.
    Type: Application
    Filed: June 23, 2022
    Publication date: December 29, 2022
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hitoshi OTA
  • Patent number: 11508800
    Abstract: An organic electroluminescent device includes a first transistor, a power supply line layer connected to one current terminal of the first transistor, a capacitive element including a first capacitive electrode connected to a gate of the first transistor, and a second capacitive electrode, a signal line, and a pixel electrode connected to the other current terminal of the first transistor, the first capacitive electrode is provided on a layer over the gate of the first transistor, and the power supply line layer is provided on a layer between the first capacitive electrode and the signal line.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: November 22, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Ryoichi Nozawa
  • Publication number: 20220344444
    Abstract: An electro-optical device includes a DA conversion circuit to convert 10 bits of data into an analog voltage output to a data line. The DA conversion circuit includes a first DA conversion circuit to convert upper 5 bits into a voltage and outputs converted voltage to the data line, a second DA conversion circuit to convert lower 5 bits into a voltage and outputs converted voltage to a relay line, and a coupling capacitance including one end electrically coupled to the second DA conversion circuit and another end electrically coupled to the data line, wherein the first DA conversion circuit includes a capacitance element corresponding to the upper 5 bits and is arranged in the Y direction along the data line, and the second DA conversion circuit includes a capacitance element corresponding to the lower 5 bits and is arranged in the Y direction along the data line.
    Type: Application
    Filed: April 25, 2022
    Publication date: October 27, 2022
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hitoshi OTA
  • Publication number: 20220310715
    Abstract: An optical module includes a first electro-optical device including a first pixel, a second electro-optical device including a second pixel and a third pixel, and a prism. An area of the second pixel is larger than an area of the first pixel, and an area of the third pixel is smaller than the area of the second pixel. A width of the third pixel in a direction corresponding to a first direction in a synthesized image is not less than 0.5 times and less than 1 time a width of the first pixel in the direction corresponding to the first direction, and a width of the third pixel in a direction corresponding to a second direction in the synthesized image is 0.5 times or more and less than 1 time a width of the first pixel in the direction corresponding to the second direction.
    Type: Application
    Filed: March 28, 2022
    Publication date: September 29, 2022
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hitoshi OTA, Tsuyoshi TAMURA, Shinichi IWATA
  • Publication number: 20220252888
    Abstract: The display device includes the first light-emitting element, a second light-emitting element, a first color filter through which light from the first light-emitting element passes, and a second color filter through which the light from the second light-emitting element passes. The relative positional relationship between the center of the first light-emitting element and the center of the first color filter is different from the relative positional relationship between the center of the second light-emitting element and the center of the second color filter.
    Type: Application
    Filed: April 29, 2022
    Publication date: August 11, 2022
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takeshi KOSHIHARA, Hitoshi OTA
  • Patent number: 11347064
    Abstract: The display device includes the first light-emitting element, a second light-emitting element, a first color filter through which light from the first light-emitting element passes, and a second color filter through which the light from the second light-emitting element passes. The relative positional relationship between the center of the first light-emitting element and the center of the first color filter is different from the relative positional relationship between the center of the second light-emitting element and the center of the second color filter.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: May 31, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takeshi Koshihara, Hitoshi Ota
  • Patent number: 11335259
    Abstract: An electro-optical device includes a first data transfer line that intersects a scan line, a second data transfer line, a first transistor that controls coupling between the first data transfer line and the second transfer line. The two or more second data transfer lines are respectively coupled to the first data transfer line via first capacitors, and when a collection of pixel circuits that are coupled to the same first data transfer line via the second data transfer lines is referred to as a pixel string, the second data transfer lines are provided to pixel circuits less than the pixel circuits included in the pixel string.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: May 17, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Takeshi Koshihara
  • Publication number: 20220101791
    Abstract: A pixel circuit 16(n) and a pixel circuit 16(n?1) acquire a data signal from a data line 14. A selector 30(n) supplies the data signal acquired from the pixel circuit 16(n) to a light emitting element selected from the light emitting elements 18(n?1), 18(n), and 18(n+1). A selector 30(n?1) can select at least the light emitting element 18(n?1), and supplies the data signal acquired from the pixel circuit 16(n?1) to the selected destination. In a sub-frame B, the selector 30(n) selects the light emitting elements 18(n) and 18(n+1), and the selector 30(n?1) selects the light emitting element 18(n?1). In a sub-frame A, the selector 30(n) selects the light emitting elements 18(n?1) and 18(n).
    Type: Application
    Filed: September 29, 2021
    Publication date: March 31, 2022
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takeshi KOSHIHARA, Hitoshi OTA, Takumi KODAMA
  • Publication number: 20220044633
    Abstract: An electroluminescent device includes a light-emitting element, a drive transistor that supplies a driving current corresponding to a gradation voltage to the light-emitting element, a first conductive layer that is electrically connected to a gate of the drive transistor, and a second conductive layer that is supplied a fixed potential and that is disposed on a same layer as the first conductive layer. The first conductive layer and the second conductive layer are disposed apart and electrically insulated from one another, and in plan view, the first conductive layer is surrounded by the second conductive layer.
    Type: Application
    Filed: October 20, 2021
    Publication date: February 10, 2022
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hitoshi OTA, Ryoichi NOZAWA
  • Patent number: 11189224
    Abstract: An electroluminescent device includes a light-emitting element, a drive transistor that supplies a driving current corresponding to a gradation voltage to the light-emitting element, a first conductive layer that is electrically connected to a gate of the drive transistor, and a second conductive layer that is supplied a fixed potential and that is disposed on a same layer as the first conductive layer. The first conductive layer and the second conductive layer are disposed apart and electrically insulated from one another, and in plan view, the first conductive layer is surrounded by the second conductive layer.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: November 30, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Ryoichi Nozawa
  • Publication number: 20210312872
    Abstract: A light-emitting device includes a data signal supply circuit, a first switching element including a first end electrically coupled to the data signal supply circuit, and a second end, a first capacitor electrically coupled to the second end of the first switching element and configured to hold an electric charge according to a gradation voltage, a second switching element including a first end electrically coupled to the second end of the first switching element, and a second end, a pixel circuit including a light-emitting element and a transistor, and a data line electrically coupled to the pixel circuit. The first capacitor is disposed to overlap the transistor in plan view.
    Type: Application
    Filed: June 15, 2021
    Publication date: October 7, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hitoshi OTA
  • Patent number: 11132950
    Abstract: Provided is an electro-optical device including a display region including a pixel circuit and a data line corresponding to the pixel circuit, a data line drive circuit configured to output a gradation voltage, and a first capacitor configured to hold a gradation voltage output from the data line drive circuit, and the capacitor is provided in the display region.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: September 28, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Takeshi Koshihara
  • Publication number: 20210286182
    Abstract: The display device includes the first light-emitting element, a second light-emitting element, a first color filter through which light from the first light-emitting element passes, and a second color filter through which the light from the second light-emitting element passes. The relative positional relationship between the center of the first light-emitting element and the center of the first color filter is different from the relative positional relationship between the center of the second light-emitting element and the center of the second color filter.
    Type: Application
    Filed: May 27, 2021
    Publication date: September 16, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takeshi KOSHIHARA, Hitoshi OTA
  • Patent number: 11107406
    Abstract: A light-emitting device includes a data signal supply circuit, a first switching element electrically coupled to the data signal supply circuit, a first capacitor disposed in a display region and electrically coupled to the first switching element, a second switching element including a first end electrically coupled to the first switching element, and a second end, a second capacitor disposed in the display region and including a first end electrically coupled to the second end of the second switching element, and a second end, a data line electrically coupled to the second end of the second capacitor, a pixel circuit electrically coupled to the data line, and a first metal layer disposed between the first capacitor and the second capacitor and supplied with a fixed potential.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: August 31, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Hitoshi Ota
  • Patent number: 11087683
    Abstract: A first storage capacitor is provided with respect to a data line. A pixel circuit includes a first transistor supplying current according to a voltage between a gate and a source, a light emitting element emitting light corresponding to current supplied by the first transistor, and a second transistor which is turned on or off between the data lines and the gate node. In a first period, an initial potential is supplied to the data line by turning on the second transistor, and in a second period, a data signal of a potential corresponding to a gradation level is supplied to the other end of the first storage capacitor by turning on the second transistor. After the second period, the second transistor is turned off.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: August 10, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Hideto Ishiguro
  • Patent number: 11074867
    Abstract: A light-emitting device includes a data signal supply circuit, a first switching element including a first end electrically coupled to the data signal supply circuit, and a second end, a first capacitor electrically coupled to the second end of the first switching element and configured to hold an electric charge according to a gradation voltage, a second switching element including a first end electrically coupled to the second end of the first switching element, and a second end, a pixel circuit including a light-emitting element and a transistor, and a data line electrically coupled to the pixel circuit. The first capacitor is disposed to overlap the transistor in plan view.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: July 27, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Hitoshi Ota
  • Patent number: 11048086
    Abstract: The display device includes the first light-emitting element, a second light-emitting element, a first color filter through which light from the first light-emitting element passes, and a second color filter through which the light from the second light-emitting element passes. The relative positional relationship between the center of the first light-emitting element and the center of the first color filter is different from the relative positional relationship between the center of the second light-emitting element and the center of the second color filter.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: June 29, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takeshi Koshihara, Hitoshi Ota