Patents by Inventor Katsuhiko Kishimoto

Katsuhiko Kishimoto 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: 20210358999
    Abstract: A micro-LED device of the present disclosure includes a crystal growth substrate (100) and a frontplane (200) that includes a plurality of micro-LEDs (220), each of which includes a first semiconductor layer (21) of a first conductivity type and a second semiconductor layer (22) of a second conductivity type, and a device isolation region (240) located between the micro-LEDs. The device isolation region includes at least one metal plug (24) electrically coupled with the second semiconductor layer. This device includes a middle layer (300) which includes first contact electrodes (31) electrically coupled with the first semiconductor layer and a second contact electrode (32) coupled with the metal plug, and a backplane (400) provided on the middle layer. The metal plug includes a titanium nitride layer (24D) which is in contact with the second semiconductor layer.
    Type: Application
    Filed: November 16, 2018
    Publication date: November 18, 2021
    Inventor: KATSUHIKO KISHIMOTO
  • Publication number: 20210359076
    Abstract: An organic EL device (100D) according to an embodiment of the present invention has: a substrate (1); a drive circuit layer (2) having a plurality of TFTs formed on the substrate; interlayer insulation layers (2Pa, 2Pb) formed on the drive circuit layer; an organic EL element layer (3) formed on the interlayer insulation layers; and a thin-film sealing structure (10DE) formed so as to cover the organic EL element layer. The interlayer insulation layers have contact holes (CH1, CH2). Contact parts (C1, C2) that connect the drive circuit layer and the organic EL element layer are formed inside the contact holes. The surface (2Pb_Sb) of the interlayer insulation layers and the surface (C_Sb) of the contact parts are flush, and the arithmetic average roughness Ra of the surfaces are 50 nm or less.
    Type: Application
    Filed: July 27, 2021
    Publication date: November 18, 2021
    Inventors: KATSUHIKO KISHIMOTO, YOZO NARUTAKI
  • Patent number: 11177466
    Abstract: A display apparatus comprises: a display panel to control emission or transmission of light to display an image; a support comprising a surface on which the display panel is placed; and a holding member that is adhered onto the surface of the support and engages with an edge of the display panel to hold the display panel at a given position of the surface, wherein the display panel has an opposite surface of a display surface of the display panel, the opposite surface being directed to the support; the holding member comprises a front surface portion formed using a light-transmitting material to cover the display surface, the front surface portion being plate shaped, and a frame portion comprising a rod-shaped member provided in such a manner as to be protruded from a first surface of the front surface portion and to be along an edge of the front surface portion, the first surface being directed to the display surface; and the front surface portion comprises a first functional layer on the first surface or on
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: November 16, 2021
    Assignee: Sakai Display Products Corporation
    Inventor: Katsuhiko Kishimoto
  • Publication number: 20210351352
    Abstract: An organic EL light-emitting element is provided in which, by means of an organic material that is oligomeric, an organic layer coated film 25 is formed in a high-definition pixel pattern in the openings 23a of insulation banks 23 that are formed to be hydrophilic; a manufacturing method of said organic EL light-emitting element is also provided. The coated film 25 is formed by dropwise injection of a liquid composition containing an organic material oligomer.
    Type: Application
    Filed: July 21, 2021
    Publication date: November 11, 2021
    Inventors: KATSUHIKO KISHIMOTO, YUKIYA NISHIOKA
  • Publication number: 20210343957
    Abstract: According to a flexible light-emitting device production method of the present disclosure, after an intermediate region (30i) and flexible substrate regions (30d) of a plastic film (30) of a multilayer stack (100) are divided from one another, the interface between the flexible substrate regions (30d) and a glass base (10) is irradiated with lift-off light. The multilayer stack (100) is separated into a first portion (110) and a second portion (120) while the multilayer stack (100) is in contact with a stage (212). The first portion (110) includes a plurality of light-emitting devices (1000) which are in contact with the stage (212). The light-emitting devices (1000) include a plurality of functional layer regions (20) and the flexible substrate regions (30d). The second portion (120) includes the glass base (10) and the intermediate region (30i). The stage (212) has ejection holes in a region which is to face the intermediate region (30i), from which a fluid is ejected in the separation step.
    Type: Application
    Filed: July 16, 2021
    Publication date: November 4, 2021
    Inventors: Katsuhiko KISHIMOTO, Yukiya NISHIOKA, Kohichi TANAKA
  • Publication number: 20210343905
    Abstract: A micro-LED device of the present disclosure includes a crystal growth substrate (100) and a frontplane (200) that includes a plurality of micro-LEDs (220), each of which includes a first semiconductor layer (21) of a first conductivity type and a second semiconductor layer (22) of a second conductivity type, and a device isolation region (240) located between the micro-LEDs. The device isolation region includes at least one metal plug (24) electrically coupled with the second semiconductor layer. This device includes a middle layer (300) which includes first contact electrodes (31) electrically coupled with the first semiconductor layer and a second contact electrode (32) coupled with the metal plug, and a backplane (400) provided on the middle layer.
    Type: Application
    Filed: November 16, 2018
    Publication date: November 4, 2021
    Inventor: KATSUHIKO KISHIMOTO
  • Publication number: 20210343686
    Abstract: According to a flexible light-emitting device production method of the present disclosure, after an intermediate region (30i) and a flexible substrate region (30d) of a plastic film (30) of a multilayer stack (100) are divided, the interface between the plastic film (30) and a glass base (10) is irradiated with lift-off light. The multilayer stack (100) is separated into the first portion (110) and the second portion (120) while the multilayer stack (100) is kept in contact with the stage (212). The first portion (110) includes the intermediate region (30i) and a light-emitting device (1000) which are adhered to the stage (212). The light-emitting device (1000) includes a functional layer region (20) and the flexible substrate region (30d). The second portion (120) includes the glass base (10). The intermediate region (30i) adhered to the stage (212) is removed from the stage while the light-emitting device (1000) is kept adhered to the stage.
    Type: Application
    Filed: July 16, 2021
    Publication date: November 4, 2021
    Inventors: KATSUHIKO KISHIMOTO, KOHICHI TANAKA
  • Patent number: 11165043
    Abstract: A thin film encapsulation structure included in an organic electroluminescent display device includes a first inorganic barrier layer, an organic barrier layer, and a second inorganic barrier layer. The thin film encapsulation structure is formed on an active region and an active region side portion of lead wires. Each lead wire at least partially includes, at least on lowermost portions of two side surfaces thereof in contact with the first inorganic barrier layer, a forward tapering side surface portion having a tapering angle smaller than 90 degrees in a cross-section parallel to a line width direction thereof. The thin film encapsulation structure further includes an inorganic barrier layer joint portion. On portions of the lead wires having the forward tapering side surface portions, the inorganic barrier layer joint portion is formed and the active region is completely enclosed by the inorganic barrier layer joint portion.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: November 2, 2021
    Assignee: SAKAI DISPLAY PRODUCTS CORPORATION
    Inventor: Katsuhiko Kishimoto
  • Publication number: 20210336099
    Abstract: A micro-LED device of the present disclosure includes a crystal growth substrate (100) and a frontplane (200) that includes a plurality of micro-LEDs (220), each of which includes a first semiconductor layer (21) of a first conductivity type and a second semiconductor layer (22) of a second conductivity type, and a device isolation region (240) located between the micro-LEDs. The device isolation region includes at least one metal plug (24) electrically coupled with the second semiconductor layer.
    Type: Application
    Filed: November 16, 2018
    Publication date: October 28, 2021
    Inventor: KATSUHIKO KISHIMOTO
  • Publication number: 20210335949
    Abstract: This organic EL display device is equipped with a substrate that has a surface upon which a drive circuit containing a thin film transistor is formed, a planarization film that makes the surface of the substrate planar by covering the drive circuit, and an organic light-emitting element that is formed upon the surface of the planarization film facing the opposite direction from the drive circuit and is electrically connected to the drive circuit. The surface of the planarization film has an arithmetic mean roughness of no more than 50 nm. The thin film transistor is provided with a gate electrode, a drain electrode, a source electrode, and a semiconductor layer that includes regions serving as the thin film transistor channel and partially overlaps with the source electrode and the drain electrode.
    Type: Application
    Filed: July 9, 2021
    Publication date: October 28, 2021
    Inventors: Katsuhiko Kishimoto, Yukiya Nishioka
  • Publication number: 20210336215
    Abstract: This organic EL display device (100) is provided with an element substrate which comprises multiple pixels and which comprises organic EL elements (3) arranged in each pixel and bank layers (48) defining the pixels, and a thin-film sealing structure (10) which covers the pixels. The thin-film sealing structure includes a first inorganic barrier layer (12), and an organic barrier layer (14) in contact with the upper surface or lower surface of the first inorganic barrier layer. The multiple pixels include red pixels, green pixels and blue pixels, and further have a polydiacetylene layer (52) which exhibits a blue color and which is provided selectively on a second inorganic barrier layer (16) of the thin-film sealing structure on blue pixels. The polydiacetylene layer is a polymer of 10,12-pentacosadiynoic acid.
    Type: Application
    Filed: July 2, 2021
    Publication date: October 28, 2021
    Inventors: KATSUHIKO KISHIMOTO, TAKUJI KATO
  • Patent number: 11158804
    Abstract: According to a flexible light-emitting device production method of the present disclosure, after an intermediate region (30i) and flexible substrate regions (30d) of a plastic film (30) of a multilayer stack (100) are divided from one another, the interface between the flexible substrate regions (30d) and a glass base (10) is irradiated with lift-off light. The multilayer stack (100) is separated into a first portion (110) and a second portion (120) while the multilayer stack (100) is in contact with a stage (212). The first portion (110) includes a plurality of light-emitting devices (1000) which are in contact with the stage (212). The light-emitting devices (1000) include a plurality of functional layer regions (20) and the flexible substrate regions (30d). The second portion (120) includes the glass base (10) and the intermediate region (30i).
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: October 26, 2021
    Assignee: SAKAI DISPLAY PRODUCTS CORPORATION
    Inventors: Katsuhiko Kishimoto, Kohichi Tanaka
  • Patent number: 11148510
    Abstract: A shading device comprises: a shading member formed using a dimming glass plate capable of changing light transmittance, the shading member having a plate shape; a display apparatus being capable of transmitting light and disposed on a surface of the shading member, the surface being to face an operator during use of the shading member, in such a manner that a display portion faces the operator; an image pickup device to pick up, as an image, a region which an opposite surface of the surface faces, and generate image pickup data; a data processing circuit to generate display image data to be displayed on the display portion during use of the shading member, based on the image pickup data generated by the image pickup device; and a switch to change light transmittance of the dimming glass plate.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: October 19, 2021
    Assignee: Sakai Display Products Corporation
    Inventor: Katsuhiko Kishimoto
  • Patent number: 11152442
    Abstract: By using an a-Si layer with low electron mobility in a TFT for driving an organic EL display device, the present invention solves problems stemming from uneven laser irradiation and suppresses the occurrence of non-uniform color and luminance. In the present invention, a first conductor film (26a) forming a drain electrode and a second conductor film (25a) forming a source electrode are disposed such that respective portions (26a1 . . . , 25a1 . . . ) of the first conductor film (26a) and the second conductor film (25a) are arranged in an alternating manner along a prescribed direction.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: October 19, 2021
    Assignee: SAKAI DISPLAY PRODUCTS CORPORATION
    Inventors: Katsuhiko Kishimoto, Yukiya Nishioka
  • Publication number: 20210320227
    Abstract: A micro-LED device of the present disclosure includes a crystal growth substrate (100) and a frontplane (200) that includes a plurality of micro-LEDs (220), each of which includes a first semiconductor layer (21) of a first conductivity type and a second semiconductor layer (22) of a second conductivity type, and a device isolation region (240). The device isolation region includes a metal plug (250) electrically coupled with the second semiconductor layer. This device includes a middle layer (300) which includes first contact electrodes (31) electrically coupled with the first semiconductor layer and a second contact electrode (32) coupled with the metal plug, and a backplane (400) provided on the middle layer.
    Type: Application
    Filed: November 16, 2018
    Publication date: October 14, 2021
    Inventor: KATSUHIKO KISHIMOTO
  • Patent number: 11143927
    Abstract: The present invention has: a reflective liquid crystal display element (30) that is formed in a first region (R) on a TFT substrate (20) and having at least the upper surface thereof comprising an inorganic insulating film (25b), and that has a reflective electrode (31), a liquid crystal layer (32), and a counter electrode (33); and a light-emitting element (40) that is formed in a second region (T) above the insulating layer of the TFT substrate, and that has a first electrode (41), a light-emitting layer (43), and a second electrode (44). In addition, the light-emitting element has an encapsulating layer (45) formed of an inorganic insulating layer that covers the entirety of each light-emitting region, and an end portion of the encapsulating layer is bonded to the inorganic insulating film of the insulating layer.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: October 12, 2021
    Assignees: SAKAI DISPLAY PRODUCTS CORPORATION, SHARP KABUSHIKI KAISHA
    Inventors: Katsuhiko Kishimoto, Yozo Narutaki, Shinji Shimada, Kiyoshi Minoura
  • Patent number: 11145839
    Abstract: An organic EL display device includes an element substrate including a substrate, plurality of organic EL elements supported by the substrate and respectively located in the plurality of pixels, and bank layer defining each of the plurality of pixels; and thin film encapsulation structure covering the plurality of pixels. The bank layer has an inclining surface enclosing each of the plurality of pixels. The thin film encapsulation structure includes a first inorganic barrier layer, organic barrier layer including a plurality of solid portions in contact with a top surface of the first inorganic barrier layer, and second inorganic barrier layer in contact with the top surface of the first inorganic barrier layer and top surfaces of the plurality of solid portions. The plurality of solid portions include pixel periphery solid portions each extending from a portion on the inclining surface to a peripheral area in the corresponding pixel.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: October 12, 2021
    Assignee: Sakai Display Products Corporation
    Inventor: Katsuhiko Kishimoto
  • Publication number: 20210313543
    Abstract: An organic EL device includes an active region including a plurality of organic EL elements and a peripheral region in a region other than the active region. The organic EL device includes an element substrate including a substrate supporting the organic EL elements; and a thin film encapsulation structure covering the organic EL elements and including a first inorganic barrier layer, an organic barrier layer in contact with a top surface of the first inorganic barrier layer, and a second inorganic barrier layer in contact with the top surface of the first inorganic barrier layer and a top surface of the organic barrier layer. The peripheral region includes a first protruding structure including a portion extending along at least one side of the active region, the first protruding structure supported by the substrate, and an extending portion, of the first inorganic barrier layer, extending onto the first protruding structure.
    Type: Application
    Filed: June 22, 2021
    Publication date: October 7, 2021
    Inventor: Katsuhiko KISHIMOTO
  • Publication number: 20210305326
    Abstract: An organic electroluminescent (EL) display device includes organic EL elements respectively located in pixels and a thin film encapsulation structure covering the pixels. Each of the organic EL elements has a microcavity structure. A thickness of an organic EL layer in the blue pixel and a thickness of an organic EL layer in the red pixel are deviated from of the optimum value of respective microcavity structures. The device further includes a first polydiacetylene layer selectively provided only on the thin film encapsulation structure on the blue pixel, which exhibits blue color and further narrows a spectral width of the blue light, a second polydiacetylene layer selectively provided only on the thin film encapsulation structure on the red pixel, which exhibits red color and further narrows a spectral width of the red light, and no polydiacetylene layer on the thin film encapsulation structure on the organic EL element that emits only the green light.
    Type: Application
    Filed: May 28, 2021
    Publication date: September 30, 2021
    Inventors: KATSUHIKO KISHIMOTO, TAKUJI KATO
  • Patent number: 11127726
    Abstract: According to a flexible light-emitting device production method of the present disclosure, after an intermediate region (30i) and flexible substrate regions (30d) of a plastic film (30) of a multilayer stack (100) are divided from one another, the interface between the flexible substrate regions (30d) and a glass base (10) is irradiated with lift-off light. The multilayer stack (100) is separated into a first portion (110) and a second portion (120) while the multilayer stack (100) is in contact with a stage (210). The first portion (110) includes a plurality of light-emitting devices (1000) which are in contact with the stage (210). The light-emitting devices (1000) include a plurality of functional layer regions (20) and the flexible substrate regions (30d). The second portion (120) includes the glass base (10) and the intermediate region (30i).
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: September 21, 2021
    Assignee: SAKAI DISPLAY PRODUCTS CORPORATION
    Inventors: Katsuhiko Kishimoto, Kazunobu Mameno, Kohichi Tanaka