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).

  • Electro-optical device, electronic apparatus, and method of driving electro-optical device
    Patent number: 10152919
    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: July 22, 2015
    Date of Patent: December 11, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Takeshi Koshihara
  • Electro-optical device and electronic apparatus
    Patent number: 10134822
    Abstract: Subpixels of R, G, and B corresponding to a scanning line as a first conductive layer extended in a row direction and a data transfer line as a second conductive layer extended in a column direction are provided. A plurality of transistors in the subpixel of each of the colors is disposed along the column direction, and a reflective layer in the subpixel of at least one color is disposed along the row direction so as to overlap any transistor of subpixels of each display color. A center position of a disposition region of a reflective layer in one pixel unit including the subpixels of R, G, and B is different from a center position of a disposition region of a transistor in one pixel unit.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: November 20, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takeshi Koshihara, Hitoshi Ota, Ryoichi Nozawa
  • Electro-optical device, electronic apparatus, and method of driving electro-optical device
    Patent number: 10109233
    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: July 22, 2015
    Date of Patent: October 23, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Takeshi Koshihara
  • Electro-optical device, electronic apparatus, and method of driving electro-optical device
    Patent number: 10096665
    Abstract: A second data transfer line that is coupled to a gate layer of a drive transistor is formed in a layer higher than the gate layer, and a transfer capacitor is formed in a layer higher than a layer having the second data transfer line. A first data transfer line to which a data signal is supplied is formed in a layer higher than a layer having the transfer capacitor.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: October 9, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Ryoichi Nozawa
  • DISPLAY DEVICE WITH DIFFERENT POSITIONAL RELATIONSHIPS BETWEEN EMITTING ELEMENTS AND FILTERS
    Publication number: 20180284455
    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 18, 2018
    Publication date: October 4, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takeshi KOSHIHARA, Hitoshi OTA
  • PIXEL CIRCUIT, ELECTRO-OPTICAL DEVICE, AND ELECTRONIC APPARATUS
    Publication number: 20180261155
    Abstract: A transistor circuit outputs a drive current in accordance with a data signal. An OLED that is connected to the transistor circuit emits light with luminance corresponding to the drive current. A discharge transistor, when the OLED does not emit the light, is turned on to connect a discharge feeder line to a node at which the transistor circuit is connected to the OLED. An absolute value of a threshold voltage of the discharge transistor is lower than an absolute value of a threshold voltage of a drive transistor in the transistor circuit. When the data signal indicates zero, the discharge transistor can cause a flow of the drive current from the transistor circuit to bypass the OLED.
    Type: Application
    Filed: March 1, 2018
    Publication date: September 13, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hitoshi Ota
  • SEMI-ACTIVE ANTENNA STARTING AID FOR HID ARC TUBES
    Publication number: 20180261444
    Abstract: A starting aid for discharge lamp arc tubes is characterized by an arc tube having a tubular body wall that longitudinally extends between first and second ends and surrounding an internal arc cavity with first and second electrodes that have conductive feedthroughs to electrically connect to corresponding first and second external arctube leads; an antenna conductor extending longitudinally on an outside surface of the arc tube wall between first and second antenna ends that are located radially outward of corresponding first and second electrodes; and an antenna coupling member comprising a conductive coupling connector that is electrically connected to the first arctube lead, and extends to a coupling end located on the body wall near to the first antenna end and separated from it by a coupling gap of predetermined, non-zero gap dimension.
    Type: Application
    Filed: March 7, 2018
    Publication date: September 13, 2018
    Inventors: Hitoshi Ota, Harold David Myers, JR.
  • ELECTRO-OPTICAL DEVICE AND ELECTRONIC APPARATUS
    Publication number: 20180261161
    Abstract: An electro-optical device includes: a pixel circuit that includes a first transistor and an electro-optical element to which a current is supplied from the first transistor, the pixel circuit being driven in a frame period composed of a display period and a blanking period; a driving circuit that controls the pixel circuit such that the pixel circuit executes a compensation operation that compensates the property of the first transistor in the display period and such that the pixel circuit does not execute the compensation operation in the blanking period; and a dummy circuit that consumes electric power in the blanking period such that the total power consumption in the pixel circuit and the dummy circuit in the display period and the total power consumption in the pixel circuit and the dummy circuit in the blanking period approach each other.
    Type: Application
    Filed: March 1, 2018
    Publication date: September 13, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hitoshi OTA
  • Semi-active antenna starting aid for HID arc tubes
    Patent number: 10074532
    Abstract: A starting aid for discharge lamp arc tubes is characterized by an arc tube having a tubular body wall that longitudinally extends between first and second ends and surrounding an internal arc cavity with first and second electrodes that have conductive feedthroughs to electrically connect to corresponding first and second external arctube leads; an antenna conductor extending longitudinally on an outside surface of the arc tube wall between first and second antenna ends that are located radially outward of corresponding first and second electrodes; and an antenna coupling member comprising a conductive coupling connector that is electrically connected to the first arctube lead, and extends to a coupling end located on the body wall near to the first antenna end and separated from it by a coupling gap of predetermined, non-zero gap dimension.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: September 11, 2018
    Assignee: Eye Lighting International of North America, Inc.
    Inventors: Hitoshi Ota, Harold David Myers, Jr.
  • ELECTROOPTICAL DEVICE, ELECTRONIC APPARATUS, AND HEAD MOUNT DISPLAY
    Publication number: 20180219050
    Abstract: An electrooptical device includes a first sub-pixel, a first region, a second sub-pixel, a second region, a third sub-pixel, a third region, a fourth sub-pixel, and a fourth region, which are arranged in an X direction as a first direction. The first sub-pixel and the second sub-pixel have different colors from each other, the third sub-pixel and the fourth sub-pixel have different colors from each other, and the first region, the second region, the third region, and the fourth region have the same length in the X direction.
    Type: Application
    Filed: January 29, 2018
    Publication date: August 2, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hitoshi OTA, Takeshi KOSHIHARA
  • ELECTRO-OPTICAL DEVICE, ELECTRO-OPTICAL DEVICE MANUFACTURING METHOD, AND ELECTRONIC APPARATUS
    Publication number: 20180205039
    Abstract: Reflection layers are arranged for respective pixels with predetermined intervals in a row direction (X direction) and a column direction (Y direction) in a display region, and, subsequently to the display region, are arranged in the same manner with the predetermined intervals in the row direction (X direction) and the column direction (Y direction) also in a peripheral region around the display region. First electrodes, first light path adjusting layers, and second light path adjusting layers are arranged for the respective pixels in the display region, and are arranged so as to correspond to the respective reflection layers also in the peripheral region. The respective reflection layers are partially connected to each other in the peripheral region and are electrically connected to a second electrode at a cathode potential.
    Type: Application
    Filed: March 16, 2018
    Publication date: July 19, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takeshi KOSHIHARA, Hitoshi OTA
  • Light emitting device and electronic apparatus
    Patent number: 10026800
    Abstract: There is provided a light emitting device including: a semiconductor substrate; a plurality of pixel circuits that is disposed in a display region of the semiconductor substrate; a first wiring that is formed of a conductive material so as to be supplied with a predetermined electric potential; and a plurality of first contact portions that is formed of a conductive material so as to connect the semiconductor substrate and the first wiring. The plurality of first contact portions and the first wiring are provided in the display region.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: July 17, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Ryoichi Nozawa, Takeshi Nomura
  • Display device with different positional relationships between emitting elements and filters
    Patent number: 10007120
    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: August 19, 2015
    Date of Patent: June 26, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takeshi Koshihara, Hitoshi Ota
  • ELECTRO-OPTICAL DEVICE, ELECTRONIC APPARATUS, AND METHOD OF DRIVING ELECTRO-OPTICAL DEVICE
    Publication number: 20180175129
    Abstract: A second data transfer line that is coupled to a gate layer of a drive transistor is formed in a layer higher than the gate layer, and a transfer capacitor is formed in a layer higher than a layer having the second data transfer line. A first data transfer line to which a data signal is supplied is formed in a layer higher than a layer having the transfer capacitor.
    Type: Application
    Filed: February 15, 2018
    Publication date: June 21, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hitoshi OTA, Ryoichi NOZAWA
  • Electro-optical device having pixel circuit and driving circuit, driving method of electro-optical device and electronic apparatus
    Patent number: 10002563
    Abstract: An electro-optical device includes a first storage capacitor that has a first electrode and a second electrode, and a second storage capacitor that has a third electrode and a fourth electrode, and a first pixel circuit. The first pixel circuit includes a first transistor having a first gate, a first drain, and a first source, an electro-optical element, a second transistor through which a first data line is electrically connected to the first gate during the second transistor is in an on-state, and a third transistor through which the first gate is electrically connected to the first drain or the first source. The second electrode and the third electrode are electrically connected to the first data line.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: June 19, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Hideto Ishiguro
  • Electro-optic device and electronic apparatus
    Patent number: 9978822
    Abstract: An electro-optic device includes an element substrate. The element substrate has a display section and a peripheral circuit section. The display section has a plurality of pixels arranged therein. The peripheral circuit section is disposed around the display section and contains peripheral circuits. The display section has, for each pixel, an organic EL element and a transistor for driving the organic EL element. The organic EL element is disposed above the transistor with a light-reflective layer and an insulating layer in between. The insulating layer has a different film thickness in accordance with to the display color of the pixel. An insulating layer in the peripheral circuit section has the same layer structure as the insulating layer having a largest film thickness in the display section.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: May 22, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Hitoshi Ota
  • ELECTROOPTICAL DEVICE, ELECTRONIC APPARATUS, AND DRIVING METHOD OF ELECTROOPTICAL DEVICE
    Publication number: 20180137820
    Abstract: An electrooptical device includes a plurality of pixels that are disposed corresponding to each of intersection positions at which a plurality of scanning lines and a plurality of data lines intersect with each other, and each of which includes a light emitting element which emits light by a driving current; and a control circuit that performs a control such that the light emitting element emits light or does not emit light. The control circuit causes the light emitting element to transition between a light-emitting state and a non-light-emitting state, in a transition period, in a case where the light emitting element of each pixel corresponding to the unselected scanning line is to transition between a light-emitting state and a non-light-emitting state.
    Type: Application
    Filed: November 15, 2017
    Publication date: May 17, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hitoshi OTA
  • Electrooptical device, electrooptical device manufacturing method, and electronic apparatus
    Patent number: 9954201
    Abstract: Reflection layers are arranged for respective pixels with predetermined intervals in a row direction (X direction) and a column direction (Y direction) in a display region, and, subsequently to the display region, are arranged in the same manner with the predetermined intervals in the row direction (X direction) and the column direction (Y direction) also in a peripheral region around the display region. First electrodes, first light path adjusting layers, and second light path adjusting layers are arranged for the respective pixels in the display region, and are arranged so as to correspond to the respective reflection layers also in the peripheral region. The respective reflection layers are partially connected to each other in the peripheral region and are electrically connected to a second electrode at a cathode potential.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: April 24, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takeshi Koshihara, Hitoshi Ota
  • ELECTRO-OPTICAL DEVICE AND ELECTRONIC APPARATUS
    Publication number: 20180102403
    Abstract: Subpixels of R, G, and B corresponding to a scanning line extended in a row direction and a data transfer line extended in a column direction are provided. A plurality of transistors in the subpixel of each of the colors is disposed along the column direction, and a reflective layer in the subpixel of at least one color is disposed along the row direction so as to overlap any transistor of subpixels of each display color. A power source wiring is disposed between the reflective layer and the transistor along the row direction, so as to overlap the transistor. Relay electrodes which connects the reflective layer and any transistor of subpixels of each display color are formed on a layer between a layer on which the power source wiring is formed, and the reflective layer.
    Type: Application
    Filed: December 12, 2017
    Publication date: April 12, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takeshi KOSHIHARA, Hitoshi OTA, Ryoichi NOZAWA
  • Electro-optical device, electronic apparatus, and method of driving electro-optical device
    Patent number: 9935164
    Abstract: A second data transfer line that is coupled to a gate layer of a drive transistor is formed in a layer higher than the gate layer, and a transfer capacitor is formed in a layer higher than a layer having the second data transfer line. A first data transfer line to which a data signal is supplied is formed in a layer higher than a layer having the transfer capacitor.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: April 3, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Ryoichi Nozawa