Patents by Inventor Takeshi Koshihara

Takeshi Koshihara 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).

  • Publication number: 20240147762
    Abstract: A light emitting device includes a transistor, a light reflection layer, a first insulation layer that includes a first layer thickness part, a second layer thickness part, and a third layer thickness part, a pixel electrode that is provided on the first insulation layer, a second insulation layer that covers a peripheral section of the pixel electrode, a light emission functional layer, a facing electrode, and a conductive layer that is provided on the first layer thickness part. The pixel electrode includes a first pixel electrode which is provided in the first layer thickness part, a second pixel electrode which is provided in the second layer thickness part, and a third pixel electrode which is provided in the third layer thickness part. The first pixel electrode, the second pixel electrode, and the third pixel electrode are connected to the transistor through the conductive layer.
    Type: Application
    Filed: December 22, 2023
    Publication date: May 2, 2024
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takeshi KOSHIHARA, Ryoichi NOZAWA
  • Publication number: 20240114716
    Abstract: A first light-emitting element and a second light-emitting element that have a resonance structure that causes output light from a light-emission functional layer to resonate between a reflective layer and a semi-transmissive reflective layer, and a pixel definition layer, and in which an aperture part is formed to correspond to each of the first light-emitting element and the second light-emitting element, are formed on a base. A first interval between the reflective layer and the semi-transmissive reflective layer in the first light-emitting element and a second interval between the reflective layer and the semi-transmissive reflective layer in the second light-emitting element are different, and a film thickness of the pixel definition layer is less than a difference between the first interval and the second interval.
    Type: Application
    Filed: December 6, 2023
    Publication date: April 4, 2024
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Ryoichi NOZAWA, Atsushi AMANO, Takeshi KOSHIHARA, Akio FUKASE, Shinichi IWATA
  • Patent number: 11947115
    Abstract: An imaging light emitting device, and an optical unit configured to guide imaging light emitted from the imaging light emitting device are included, and the imaging light emitting device emits the imaging light at different densities according to a distortion generated in an optical system constituting the optical unit and an image position.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: April 2, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takashi Takeda, Takeshi Koshihara
  • Publication number: 20240090301
    Abstract: A display device according to the present disclosure includes a substrate, a lens layer including a lens, a pixel electrode disposed between the substrate and the lens layer, and a color filter disposed between the pixel electrode and the lens layer. The color filter includes a colored portion that overlaps a part of the pixel electrode in plan view and is disposed between the substrate and the lens layer. The pixel electrode is provided in a display region in which an image is displayed. The lens overlaps a part of the pixel electrode in the plan view. A distance between the center of the pixel electrode and the display center of the display region is shorter than a distance between the center of the lens and the display center in the plan view.
    Type: Application
    Filed: November 22, 2023
    Publication date: March 14, 2024
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takeshi KOSHIHARA
  • Patent number: 11925089
    Abstract: An electro-optical device comprising a plurality of pixels. Each of the plurality of pixels includes a first sub pixel and a second sub pixel that are arrayed in the first direction, a third sub pixel and a fourth sub pixel that are arrayed in the first direction, and a color filter corresponding to each of the first sub pixel, the second sub pixel, the third sub pixel, and the fourth sub pixel. Each of the first sub pixel, the second sub pixel, the third sub pixel, and the fourth sub pixel including a light-emitting element includes a light-emitting region, a supply circuit for supplying current to the light-emitting element, and a contact region in which a contact for electrically connecting the light-emitting element to the supply circuit is disposed.
    Type: Grant
    Filed: April 12, 2023
    Date of Patent: March 5, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takeshi Koshihara
  • Patent number: 11923116
    Abstract: Disclosed is a grain-oriented electrical steel sheet with extremely low iron loss by means of a magnetic domain refining technique. In a grain-oriented electrical steel sheet having a plurality of magnetic domains refined via a local strain introduction portion, when a direct-current external magnetic field is applied to the steel sheet in a rolling direction, for a magnetic flux leaked from the local strain introduction portion at a position 1.0 mm away from a surface of the steel sheet at a side of the local strain introduction portion, a value obtained by dividing an intensity level of a total leakage magnetic flux by an intensity level of a magnetic flux leaked due to causes other than strain is more than 1.2.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: March 5, 2024
    Assignee: JFE STEEL CORPORATION
    Inventors: Takeshi Omura, Yoshihisa Ichihara, Kunihiro Senda, Takahiro Koshihara
  • Patent number: 11895871
    Abstract: A light emitting device includes a transistor, a light reflection layer, a first insulation layer that includes a first layer thickness part, a second layer thickness part, and a third layer thickness part, a pixel electrode that is provided on the first insulation layer, a second insulation layer that covers a peripheral section of the pixel electrode, a light emission functional layer, a facing electrode, and a conductive layer that is provided on the first layer thickness part. The pixel electrode includes a first pixel electrode which is provided in the first layer thickness part, a second pixel electrode which is provided in the second layer thickness part, and a third pixel electrode which is provided in the third layer thickness part. The first pixel electrode, the second pixel electrode, and the third pixel electrode are connected to the transistor through the conductive layer.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: February 6, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takeshi Koshihara, Ryoichi Nozawa
  • Patent number: 11882724
    Abstract: A first light-emitting element and a second light-emitting element that have a resonance structure that causes output light from a light-emission functional layer to resonate between a reflective layer and a semi-transmissive reflective layer, and a pixel definition layer, and in which an aperture part is formed to correspond to each of the first light-emitting element and the second light-emitting element, are formed on a base. A first interval between the reflective layer and the semi-transmissive reflective layer in the first light-emitting element and a second interval between the reflective layer and the semi-transmissive reflective layer in the second light-emitting element are different, and a film thickness of the pixel definition layer is less than a difference between the first interval and the second interval.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: January 23, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Ryoichi Nozawa, Atsushi Amano, Takeshi Koshihara, Akio Fukase, Shinichi Iwata
  • Patent number: 11871637
    Abstract: A display device according to the present disclosure includes a substrate, a lens layer including a lens, a pixel electrode disposed between the substrate and the lens layer, and a color filter disposed between the pixel electrode and the lens layer. The color filter includes a colored portion that overlaps a part of the pixel electrode in plan view and is disposed between the substrate and the lens layer. The pixel electrode is provided in a display region in which an image is displayed. The lens overlaps a part of the pixel electrode in the plan view. A distance between the center of the pixel electrode and the display center of the display region is shorter than a distance between the center of the lens and the display center in the plan view.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: January 9, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takeshi Koshihara
  • Patent number: 11817533
    Abstract: There is provided an electro-optical device including a light-emitting layer that has a first light-emitting element and a second light-emitting element which are adjacent to each other and a color filter layer that has a first color filter provided corresponding to the first light-emitting element and a second color filter provided corresponding to the second light-emitting element, in which an inter-element distance between the first light-emitting element and the second light-emitting element is 1.5 ?m or less, and a thickness of layer between the light-emitting layer and the color filter layer is 6 times or less the inter-element distance.
    Type: Grant
    Filed: August 11, 2022
    Date of Patent: November 14, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takeshi Koshihara
  • Patent number: 11747637
    Abstract: Provided is an optical unit and a display device capable of suppressing the occurrence of stray light by suppressing the incidence of light onto a peripheral region of a panel. In the optical unit, a first panel, a second panel, and a third panel are arranged to face a dichroic prism. A first light-emitting element is provided in a display region of the first panel, the second panel, and the third panel, and metal wiring is provided in a peripheral region. Here, a light shielding layer is provided between the dichroic prism and the peripheral region of each of the first panel, the second panel, and the third panel. Thus, even when a part of color light that should be reflected passes through a dichroic mirror, the leaked light is absorbed by the light shielding layer.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: September 5, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takeshi Koshihara
  • Patent number: 11751446
    Abstract: The display device includes a pixel circuit provided corresponding to a data line and a scanning line, the pixel circuit includes first to fourth transistors and a display element, and the first transistor supplies a current in accordance with a voltage between a gate node and a source node to the display element via the fourth transistor, the second transistor is disposed between the data line and the gate node of the first transistor and is turned on and off in accordance with a potential of the scanning line, the third transistor is disposed between the data line and a drain node of the first transistor, and the fourth transistor is disposed between the drain node of the first transistor and the display element.
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: September 5, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takumi Kodama, Takeshi Koshihara
  • Publication number: 20230273436
    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 4, 2023
    Publication date: August 31, 2023
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takeshi KOSHIHARA, Hitoshi OTA
  • Publication number: 20230247885
    Abstract: An electro-optical device comprising a plurality of pixels. Each of the plurality of pixels includes a first sub pixel and a second sub pixel that are arrayed in the first direction, a third sub pixel and a fourth sub pixel that are arrayed in the first direction, and a color filter corresponding to each of the first sub pixel, the second sub pixel, the third sub pixel, and the fourth sub pixel. Each of the first sub pixel, the second sub pixel, the third sub pixel, and the fourth sub pixel including a light-emitting element includes a light-emitting region, a supply circuit for supplying current to the light-emitting element, and a contact region in which a contact for electrically connecting the light-emitting element to the supply circuit is disposed.
    Type: Application
    Filed: April 12, 2023
    Publication date: August 3, 2023
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takeshi KOSHIHARA
  • Patent number: 11681147
    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: April 29, 2022
    Date of Patent: June 20, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takeshi Koshihara, Hitoshi Ota
  • Patent number: 11659752
    Abstract: An electro-optical device comprising a plurality of pixels. Each of the plurality of pixels includes a first sub pixel and a second sub pixel that are arrayed in the first direction, a third sub pixel and a fourth sub pixel that are arrayed in the first direction, and a color filter corresponding to each of the first sub pixel, the second sub pixel, the third sub pixel, and the fourth sub pixel. Each of the first sub pixel, the second sub pixel, the third sub pixel, and the fourth sub pixel including a light-emitting element includes a light-emitting region, a supply circuit for supplying current to the light-emitting element, and a contact region in which a contact for electrically connecting the light-emitting element to the supply circuit is disposed.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: May 23, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takeshi Koshihara
  • Patent number: 11641771
    Abstract: An electro-optical device includes a first light-emitting element including a first light-emitting region, a second light-emitting element including a second light-emitting region, a first filter, and a second filter. The area of the first light-emitting region is smaller than the area of the second light-emitting region, and a relationship (Lf11?Le11)>(Lf21?Le21) is satisfied when the length of the first light-emitting region is Le11, the length of the second light-emitting region is Le21, the length of the first filter is Lf11, and the length of the second filter is Lf21.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: May 2, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Jun Irobe, Takeshi Koshihara
  • Patent number: 11579517
    Abstract: An optical module in the present disclosure includes a first image display panel including a first display part and a first coupling part, a second image display panel including a second display part and a second coupling part, a third image display panel including a third display part and a third coupling part, and a cross dichroic prism configured to synthesize first, second, and third image light. The cross dichroic prism has a cross axis at which a two of photosynthesis surfaces cross each other. The first, second, and third image display panel are respectively bonded to different surfaces of the cross dichroic prism in a state where a long side of each of the first, second, and third display part extends along the cross axis and where the first, second, and third coupling part are each positioned on an outer side of the cross dichroic prism.
    Type: Grant
    Filed: January 5, 2022
    Date of Patent: February 14, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takeshi Koshihara
  • 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: 11557637
    Abstract: A light emitting device includes a transistor, a light reflection layer, a first insulation layer that includes a first layer thickness part, a second layer thickness part, and a third layer thickness part, a pixel electrode that is provided on the first insulation layer, a second insulation layer that covers a peripheral section of the pixel electrode, a light emission functional layer, a facing electrode, and a conductive layer that is provided on the first layer thickness part. The pixel electrode includes a first pixel electrode which is provided in the first layer thickness part, a second pixel electrode which is provided in the second layer thickness part, and a third pixel electrode which is provided in the third layer thickness part. The first pixel electrode, the second pixel electrode, and the third pixel electrode are connected to the transistor through the conductive layer.
    Type: Grant
    Filed: August 29, 2022
    Date of Patent: January 17, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takeshi Koshihara, Ryoichi Nozawa