Patents by Inventor Akira Hirai

Akira Hirai 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: 11841575
    Abstract: A liquid crystal display device includes a first polarizing plate, a first substrate including a thin-film transistor, a liquid crystal layer containing liquid crystal molecules, a second substate, a second polarizing plate, and a backlight. The first polarizing plate, the first substate, the liquid crystal layer, the second substrate, the second polarizing plate, and the backlight are arranged in this order. The first substrate has a display area and a frame area placed on an outer edge of the display region. The liquid crystal display device has an ink layer between the frame area of the first substrate and the first polarizing plate. The liquid crystal display device has an internal reflectance ratio y of 0.2 to 0.3. The internal reflectance ratio y is expressed by Formula (1-1).
    Type: Grant
    Filed: April 13, 2023
    Date of Patent: December 12, 2023
    Assignee: Sharp Display Technology Corporation
    Inventors: Akira Hirai, Yuichi Kawahira, Akira Sakai
  • Patent number: 11822408
    Abstract: A recording medium stores a program for causing a computer to execute processing including: acquiring a first process execution time and energy consumption of a first processor core in the execution time when a process executed by the first processor core is switched from a first process to a second process; specifying one or more processes of a first process group to which the first process belongs, from among process groups each of which is a group of processes and calculating an index that indicates the energy consumption per unit time involved in execution of the first process group based on the execution time and the energy consumption acquired for the specified one or more processes; and controlling an operation of a processor core to which the process is allocated according to comparison between the index calculated for the first process group with a threshold.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: November 21, 2023
    Assignee: FUJITSU LIMITED
    Inventor: Akira Hirai
  • Publication number: 20230333427
    Abstract: A liquid crystal display device includes a first polarizing plate, a first substrate including a thin-film transistor, a liquid crystal layer containing liquid crystal molecules, a second substrate, a second polarizing plate, and a backlight. The first polarizing plate, the first substrate, the liquid crystal layer, the second substrate, the second polarizing plate, and the backlight are arranged in this order. The first substrate has a display area and a frame area placed on an outer edge of the display region. The liquid crystal display device has an ink layer between the frame area of the first substrate and the first polarizing plate. The liquid crystal display device has an internal reflectance ratio y of 0.2 to 0.3. The internal reflectance ratio y is expressed by Formula (1-1).
    Type: Application
    Filed: April 13, 2023
    Publication date: October 19, 2023
    Inventors: Akira HIRAI, Yuichi KAWAHIRA, Akira SAKAI
  • Patent number: 11774813
    Abstract: Provided are a liquid crystal display device that can increase light use efficiency and reduce external light reflection, and a method of producing the liquid crystal display device. The liquid crystal display device sequentially includes, from a back surface side toward a viewing surface side: a first substrate; a liquid crystal layer; and a second substrate, the liquid crystal display device including sub-pixels each including an optical opening allowing light to pass through, the first substrate sequentially including, from the back surface side toward the viewing surface side: a supporting substrate; a metal layer surrounding the optical openings; and a resist layer being superimposed with the metal layer and being in contact with the metal layer, an end of the resist layer being superimposed with an end of the metal layer and having a taper angle ? of 40° or more.
    Type: Grant
    Filed: December 9, 2022
    Date of Patent: October 3, 2023
    Assignee: Sharp Display Technology Corporation
    Inventors: Yuichi Kawahira, Akira Hirai, Akira Sakai
  • Publication number: 20230288977
    Abstract: A non-transitory computer-readable recording medium stores a power control program for causing a computer to execute processing including: monitoring an integrated value of energy consumption consumed by a memory for every predetermined period counted by an interrupt counter; and performing control to increase an operating frequency and a voltage of a memory system at timing of receiving an interrupt that occurs in a case where the interrupt counter overflows on a basis of an upper limit threshold of power consumption per predetermined period set in advance in the interrupt counter.
    Type: Application
    Filed: December 19, 2022
    Publication date: September 14, 2023
    Applicant: Fujitsu Limited
    Inventor: Akira HIRAI
  • Publication number: 20230185139
    Abstract: Provided are a liquid crystal display device that can increase light use efficiency and reduce external light reflection, and a method of producing the liquid crystal display device. The liquid crystal display device sequentially includes, from a back surface side toward a viewing surface side: a first substrate; a liquid crystal layer; and a second substrate, the liquid crystal display device including sub-pixels each including an optical opening allowing light to pass through, the first substrate sequentially including, from the back surface side toward the viewing surface side: a supporting substrate; a metal layer surrounding the optical openings; and a resist layer being superimposed with the metal layer and being in contact with the metal layer, an end of the resist layer being superimposed with an end of the metal layer and having a taper angle ? of 40° or more.
    Type: Application
    Filed: December 9, 2022
    Publication date: June 15, 2023
    Inventors: Yuichi KAWAHIRA, Akira HIRAI, Akira SAKAI
  • Patent number: 11668966
    Abstract: The liquid crystal display device includes: a display region for displaying an image; and a frame region surrounding the display region, the liquid crystal display device sequentially including from a viewing surface side toward a back surface side: a first polarizing plate; a first substrate provided with a switching element connected to a gate line and a source line; a liquid crystal layer; a second substrate; and a second polarizing plate, in the frame region, the first substrate sequentially including from a viewing surface side toward a back surface side a support substrate, a reflectance-reducing layer, and a metal line layer that overlaps the reflectance-reducing layer and includes at least one of a gate line layer provided with the gate line or a source line layer provided with the source line, the reflectance-reducing layer having a lower viewing surface side reflectance than the metal line layer.
    Type: Grant
    Filed: May 18, 2022
    Date of Patent: June 6, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Akira Hirai, Yuichi Kawahira, Akira Sakai
  • Publication number: 20230035134
    Abstract: A recording medium stores a program for causing a computer to execute processing including: acquiring a first process execution time and energy consumption of a first processor core in the execution time when a process executed by the first processor core is switched from a first process to a second process; specifying one or more processes of a first process group to which the first process belongs, from among process groups each of which is a group of processes and calculating an index that indicates the energy consumption per unit time involved in execution of the first process group based on the execution time and the energy consumption acquired for the specified one or more processes; and controlling an operation of a processor core to which the process is allocated according to comparison between the index calculated for the first process group with a threshold.
    Type: Application
    Filed: April 11, 2022
    Publication date: February 2, 2023
    Applicant: FUJITSU LIMITED
    Inventor: Akira Hirai
  • Patent number: 11561439
    Abstract: A liquid crystal display device includes, in order from an observation surface side to a hack surface side, a thin film transistor substrate including a color filter layer, a pair of electrodes, and a metal wiring line, a liquid crystal layer containing liquid crystal molecules that are horizontally aligned to the thin film transistor substrate and in which alignment of the liquid crystal molecules is changed due to an electric field generated by applying a voltage to the pair of electrodes, a counter substrate, and a backlight, in which the counter substrate includes a reflective layer disposed outside the pixel area and reflecting incident light from the backlight to the back surface side, the pair of electrodes are a first electrode having a planar shape and a second electrode provided with a and the color filter layer is disposed on the observation surface side of the second electrode.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: January 24, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuichi Kawahira, Akira Hirai, Akira Sakai, Kazutoshi Kida, Yasuhiro Sugita
  • Publication number: 20230017351
    Abstract: A polarizing plate includes a polarizing layer over a base material, an inorganic insulation layer over the polarizing layer, and a water-resistant layer over the inorganic insulation layer, where the water-resistant layer covers sidewalls of the polarizing layer and sidewalls of the inorganic insulation layer, when the base material is viewed from a top plan view.
    Type: Application
    Filed: July 19, 2021
    Publication date: January 19, 2023
    Inventors: MIHO YAMADA, MASAHIRO HASEGAWA, AKIRA HIRAI, AKIRA SAKAI
  • Publication number: 20220373836
    Abstract: The liquid crystal display device includes: a display region for displaying an image; and a frame region surrounding the display region, the liquid crystal display device sequentially including from a viewing surface side toward a back surface side: a first polarizing plate; a first substrate provided with a switching element connected to a gate line and a source line; a liquid crystal layer; a second substrate; and a second polarizing plate, in the frame region, the first substrate sequentially including from a viewing surface side toward a back surface side a support substrate, a reflectance-reducing layer, and a metal line layer that overlaps the reflectance-reducing layer and includes at least one of a gate line layer provided with the gate line or a source line layer provided with the source line, the reflectance-reducing layer having a lower viewing surface side reflectance than the metal line layer.
    Type: Application
    Filed: May 18, 2022
    Publication date: November 24, 2022
    Inventors: Akira HIRAI, Yuichi KAWAHIRA, Akira SAKAI
  • Publication number: 20220300346
    Abstract: An information processing device includes a memory, and a processor coupled to the memory and the processor configured to measure energy consumption of a first unit of processing that operates in the processor, stop an operation of the first unit of processing when the measured energy consumption reaches a predetermined value, and operate a second unit of processing in the processor.
    Type: Application
    Filed: January 21, 2022
    Publication date: September 22, 2022
    Applicant: FUJITSU LIMITED
    Inventor: Akira HIRAI
  • Patent number: 11428991
    Abstract: The liquid crystal display device includes, sequentially from a viewing surface side to a back surface side: a linearly polarizing plate and a circularly polarizing plate including a first ?/4 retardation layer; a thin-film transistor substrate including a pair of electrodes disposed in a pixel region and a metal line disposed outside the pixel region; a liquid crystal layer containing liquid crystal molecules aligned parallel to the thin-film transistor substrate, alignment of the liquid crystal molecules varying in response to an electric field generated by application of voltage to the pair of electrodes; a color filter substrate including a color filter layer; and a backlight, the thin-film transistor substrate including a second ?/4 retardation layer, the color filter substrate including a reflective layer disposed outside the pixel region and configured to reflect incident light from the backlight toward the back surface.
    Type: Grant
    Filed: October 11, 2021
    Date of Patent: August 30, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuichi Kawahira, Takako Koide, Masahiro Hasegawa, Akira Hirai, Akira Sakai, Kiyoshi Minoura
  • Publication number: 20220197091
    Abstract: A liquid crystal display device includes, in order from an observation surface side to a hack surface side, a thin film transistor substrate including a color filter layer, a pair of electrodes, and a metal wiring line, a liquid crystal layer containing liquid crystal molecules that are horizontally aligned to the thin film transistor substrate and in which alignment of the liquid crystal molecules is changed due to an electric field generated by applying a voltage to the pair of electrodes, a counter substrate, and a backlight, in which the counter substrate includes a reflective layer disposed outside the pixel area and reflecting incident light from the backlight to the back surface side, the pair of electrodes are a first electrode having a planar shape and a second electrode provided with a and the color filter layer is disposed on the observation surface side of the second electrode.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 23, 2022
    Inventors: YUICHI KAWAHIRA, AKIRA HIRAI, AKIRA SAKAI, KAZUTOSHI KIDA, YASUHIRO SUGITA
  • Publication number: 20220121066
    Abstract: The liquid crystal display device includes, sequentially from a viewing surface side to a back surface side: a linearly polarizing plate and a circularly polarizing plate including a first ?/4 retardation layer; a thin-film transistor substrate including a pair of electrodes disposed in a pixel region and a metal line disposed outside the pixel region; a liquid crystal layer containing liquid crystal molecules aligned parallel to the thin-film transistor substrate, alignment of the liquid crystal molecules varying in response to an electric field generated by application of voltage to the pair of electrodes; a color filter substrate including a color filter layer; and a backlight, the thin-film transistor substrate including a second ?/4 retardation layer, the color filter substrate including a reflective layer disposed outside the pixel region and configured to reflect incident light from the backlight toward the back surface.
    Type: Application
    Filed: October 11, 2021
    Publication date: April 21, 2022
    Inventors: YUICHI KAWAHIRA, TAKAKO KOIDE, MASAHIRO HASEGAWA, AKIRA HIRAI, AKIRA SAKAI, KIYOSHI MINOURA
  • Publication number: 20210341789
    Abstract: The present invention provides a liquid crystal display device including: a liquid crystal panel including a viewing surface side substrate, a liquid crystal layer, and a back surface side substrate; and a backlight including a reflector facing the back surface side substrate, wherein the liquid crystal panel in a plan view includes multiple pixel regions and a non-display region between the pixel regions, in the pixel regions, color filters are disposed, in the non-display region, a gate electrode layer, a source-drain electrode layer, and a semiconductor layer are disposed, the back surface side substrate includes a reflective surface facing the backlight in at least part of the non-display region, and the reflective surface is constituted by a metal material having a higher reflectance than a metal material contained in portions of the source-drain electrode layer that are connected to the semiconductor layer.
    Type: Application
    Filed: July 16, 2021
    Publication date: November 4, 2021
    Inventors: Akira HIRAI, Kiyoshi MINOURA, Yasuhiro HASEBA, Akira SAKAI
  • Publication number: 20210287616
    Abstract: A liquid crystal panel for display that displays an image by controlling transmission of the light emitted from the illumination device, in which the illumination device includes a light source, and a liquid crystal panel for dimming which is disposed closer to the liquid crystal panel for display than the light source, and the liquid crystal, panel for dimming includes a signal line, and a reflection layer that is disposed closer to the light source than the signal line in at least a part of a region overlapping the signal line in plan view, and has a higher average luminous reflectance in a visible wavelength region of 400 nm or more and 700 nm or less than the signal line.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 16, 2021
    Inventors: YUICHI KAWAHIRA, AKIRA HIRAI, AKIRA SAKAI, KIYOSHI MINOURA
  • Publication number: 20210161286
    Abstract: A silver-sterilizing sponge tooth brushing appliance, a silver-sterilizing toothbrush, and a method of manufacturing the same are provided. More particularly, a silver-sterilizing sponge tooth brushing appliance containing one or two or more particles selected from talc particles, ceramic particles, and inorganic mineral particles, which have an sintered silver-containing surface layer, a silver-sterilizing toothbrush, and a method of manufacturing the same. The silver-sterilizing sponge tooth brushing appliance and the silver-sterilizing toothbrush have an excellent sterilizing effect.
    Type: Application
    Filed: February 17, 2020
    Publication date: June 3, 2021
    Inventor: Akira HIRAI
  • Patent number: 11022853
    Abstract: The present invention relates to a display panel including on a viewing surface side thereof a thin film transistor substrate. The thin film transistor substrate includes a multilayer film in a region in a plan view including at least one electrode of thin film transistor electrodes including a gate electrode, a source electrode, and a drain electrode. The multilayer film includes a stack including, in the order from the viewing surface side, a first metal layer having a thickness of 40 nm or smaller, a first transparent insulating layer having a thickness of 10 nm or greater and 155 nm or smaller, and a second metal layer having a greater thickness than the first metal layer. The multilayer film includes a layer formed from a metal having a reflectance at a thickness of 200 nm of 50% or lower.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: June 1, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Akira Hirai, Kiyoshi Minoura, Hiromi Matsumoto, Akira Sakai, Yasuhiro Haseba
  • Patent number: 11005157
    Abstract: A liquid crystal cell including antenna units includes a TFT substrate, a slot substrate, an acidic group-containing orientation film, a liquid crystal layer, and a sealant. The TFT substrate includes a first dielectric substrate, TFTs supported by the first dielectric substrate, and patch electrodes electrically connected to the TFTs. The slot substrate includes a second dielectric substrate and a slot electrode supported by the second dielectric substrate and including slots. The acidic group-containing orientation film on a surface of one of the TFT substrate and the slot substrate contains a polymer having an acidic group. The liquid crystal layer is interposed between the TFT substrate and the slot substrate in which the patch electrodes and the slot electrode are opposed to each other to constitute the antenna units. The sealant surrounds the liquid crystal layer and is interposed between the TFT substrate and the slot substrate.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: May 11, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Akira Hirai