Patents by Inventor Tohru Okabe

Tohru Okabe 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).

  • Semiconductor device and method of manufacturing semiconductor device
    Patent number: 10840269
    Abstract: A semiconductor device provided in a pixel circuit of a display device includes, in order from a lower side: a substrate; an LTPS layer; a first gate insulating layer; a first metal layer; a first flattened layer; a second gate insulating layer; an oxide semiconductor layer; a second metal layer; a passivation layer; and a third metal layer. The gate electrode layer of an LTPS-TFT and the gate electrode of an oxide semiconductor TFT are formed by the first metal layer.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: November 17, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Okabe, Tetsunori Tanaka, Takeshi Yaneda
  • DISPLAY DEVICE
    Publication number: 20200358030
    Abstract: A frame-like bank 35 has two inclined side surfaces, at least one of which forms a taper angle ?2 of not more than 20°. A first sealing film 28, which is an inorganic film, is formed in a display area DA and a non-display area NDA in a manner so as to cover the frame-like bank 35.
    Type: Application
    Filed: August 24, 2017
    Publication date: November 12, 2020
    Inventors: Tohru OKABE, Ryosuke GUNJI, Hiroki TANIYAMA, Shinsuke SAIDA, Shinji ICHIKAWA, Akira INOUE, Hiroharu JINMURA, Yoshihiro NAKADA
  • ACTIVE MATRIX SUBSTRATE, OPTICAL SHUTTER SUBSTRATE, DISPLAY DEVICE, AND METHOD FOR MANUFACTURING ACTIVE MATRIX SUBSTRATE
    Publication number: 20200328235
    Abstract: An active matrix substrate having low susceptibility to contact failure between two conductor films is provided. An oxide semiconductor film converted into a conductor is provided in a layer between a substrate and a first metal film. Within a contact hole, the oxide semiconductor film converted into a conductor is in contact with a second metal film. Outside of the contact hole, the oxide semiconductor film converted into a conductor is in contact with the first metal film.
    Type: Application
    Filed: June 16, 2017
    Publication date: October 15, 2020
    Inventors: Tohru OKABE, Hirohiko NISHIKI, Takeshi YANEDA
  • ACTIVE MATRIX SUBSTRATE, OPTICAL SHUTTER SUBSTRATE, DISPLAY DEVICE, AND METHOD FOR MANUFACTURING ACTIVE MATRIX SUBSTRATE
    Publication number: 20200312888
    Abstract: An active matrix substrate in which step-caused disconnection of a metal film in a contact hole does not easily occur includes a first to third insulating films and first to third metal films on a glass substrate and a contact hole electrically connecting the first and second metal film, the contact hole including first to third hole present respectively in the first to third insulating films, the first and third metal films being in contact with each other inside the first hole, the second insulating film and an oxide semiconductor film overlapping with each other in a region below the third hole, the second and third metal films being in contact with each other in a region above the first insulating film and either inside or below the third hole.
    Type: Application
    Filed: June 21, 2017
    Publication date: October 1, 2020
    Inventors: Tohru OKABE, Hirohiko NISHIKI, Takeshi YANEDA
  • DISPLAY DEVICE
    Publication number: 20200312938
    Abstract: A display device includes a resin substrate, a TFT layer, a light-emitting element, a frame region, a terminal portion, a bending portion, a plurality of frame wiring lines, and at least a one-layer inorganic film. The light-emitting element includes a metal electrode provided on a flattening film included in the TFT layer. In the bending portion, an opening is formed in at least the one-layer inorganic film. A frame flattening film is provided to fill the opening. The plurality of frame wiring lines are provided on the frame flattening film across the opening. The frame wiring line is formed of a metal material identical to the metal material of the metal electrode. The frame flattening film is formed of a resin material identical to the resin material of the flattening film.
    Type: Application
    Filed: September 28, 2017
    Publication date: October 1, 2020
    Inventors: TOHRU OKABE, RYOSUKE GUNJI, HIROKI TANIYAMA, SHINSUKE SAIDA, HIROHARU JINMURA, YOSHIHIRO NAKADA, AKIRA INOUE
  • Method of manufacturing display device
    Patent number: 10784466
    Abstract: A portion of a resin film is precisely cut out when the resin film is peeled off. A rear surface of a glass substrate on which a protrusion is formed is irradiated with a laser beam to peel a resin film from the glass substrate. Then, the protrusion and the resin film formed on the protrusion are left on the glass substrate.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: September 22, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Okabe, Ryosuke Gunji, Hiroki Taniyama, Shinsuke Saida, Shinji Ichikawa, Akira Inoue, Hiroharu Jinmura, Yoshihiro Nakada
  • Display device, display device manufacturing method, and display device manufacturing apparatus
    Patent number: 10777633
    Abstract: A display device includes a TFT layer provided with a terminal configured to receive a signal inputted from an external source, and a terminal wiring line in a lower layer underlying the terminal, and a light emitting element layer in an upper layer overlying the TFT layer. The terminal includes a main portion and a peripheral portion surrounding the main portion. The peripheral portion is covered by a cover film, the terminal wiring line and a lower face of the peripheral portion are in contact, and the main portion and the terminal wiring line overlap via at least one terminal base film.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: September 15, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Okabe, Ryosuke Gunji, Shinsuke Saida, Shinji Ichikawa, Hiroki Taniyama
  • BLACK MATRIX COMPOSITION, BLCK MATRIX, AND BLACK MATRIX PRODUCTION METHOD
    Publication number: 20200277494
    Abstract: [Problem] To provide a composition for a black matrix which is a material suitable for manufacturing a black matrix, which is suitable for a high luminance display device structure and has high heat resistance and high light-shielding properties. [Means for Solution] The present invention uses a composition for a black matrix comprising: (I) a black colorant containing carbon black having a volume average particle diameter of 1 to 300 nm; (II) a siloxane polymer to be obtained by hydrolyzing and condensing a silane compound represented by a prescribed formula in the presence of an acidic or basic catalyst; (III) surface modified silica fine particles; (IV) a thermal base generator; and (V) a solvent.
    Type: Application
    Filed: December 7, 2017
    Publication date: September 3, 2020
    Inventors: Hirohiko NISHIKI, TOHRU OKABE, IZUMI ISHIDA, SHOGO MURASHIGE, Atsuko NOYA, Toshiaki NONAKA, Naofumi YOSHIDA
  • DISPLAY DEVICE
    Publication number: 20200273380
    Abstract: In a cross section of a bending section of a frame region, a first opening opening upward is formed in at least one layer of inorganic film included in a TFT layer. A first organic film is provided to plug the first opening. A frame wiring line is provided on the first organic film. A second organic film is provided to cover the frame wiring line. A second opening opening upward is formed in the first organic film on an inner side with respect to the first opening.
    Type: Application
    Filed: September 29, 2017
    Publication date: August 27, 2020
    Inventors: SHINJI ICHIKAWA, TOHRU OKABE, SHINSUKE SAIDA, RYOSUKE GUNJI, HIROKI TANIYAMA, YOSHIHIRO NAKADA, HIROHARU JINMURA, AKIRA INOUE
  • DISPLAY DEVICE, EXPOSURE DEVICE, AND MANUFACTURING METHOD OF DISPLAY DEVICE
    Publication number: 20200274097
    Abstract: A display device includes a plurality of picture elements. The plurality of picture elements are formed with anodes and cover layers cover an outer periphery of a corresponding anode of the anodes, the cover layer allowing an opening of the corresponding anode to be formed. The cover layer is spaced apart from the cover layer of a different anode of the anodes, the different anode being adjacent to the anode.
    Type: Application
    Filed: September 29, 2017
    Publication date: August 27, 2020
    Inventors: SHINJI ICHIKAWA, HIROKI TANIYAMA, SHINSUKE SAIDA, RYOSUKE GUNJI, TOHRU OKABE, YOSHIHIRO NAKADA, HIROHARU JINMURA, AKIRA INOUE
  • Display device and manufacturing method therefor
    Patent number: 10754146
    Abstract: A display device includes: a translucent substrate; a light-shielding film provided on the translucent substrate; first transparent insulating films that are provided on the translucent substrate so as to cover the covering the light-blocking film; and a plurality of thin film transistors (TFTs) that are provided on the first transparent insulation films and include a portion of lines made of conductive films. The light-shielding film is arranged so as to overlap at least the TFTs, when viewed in a direction vertical to the translucent substrate.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: August 25, 2020
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hirohiko Nishiki, Tohru Okabe
  • Display device, display device manufacturing method, and display device manufacturing apparatus
    Patent number: 10741635
    Abstract: To reduce a possibility of short circuiting between a wiring line that connects to a terminal unit and a pixel electrode, a display device is provided that includes a first lead wiring line that extends from a display area to a frame area while intersecting with an end portion of a flattening film, a second lead wiring line that is in a layer more on an upper side than the first lead wiring line and extends to a terminal unit while coming into contact with and intersecting with a first bank formed in a periphery of a second electrode, and a first wiring line contact part through which the first lead wiring line and the second lead wiring line connect to each other, the first wiring line contact part being provided between an end portion of the flattening film and the first bank.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: August 11, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Okabe, Shinsuke Saida, Ryosuke Gunji, Hiroki Taniyama, Shinji Ichikawa, Yoshihiro Nakada, Hiroharu Jinmura, Akira Inoue
  • Display device
    Patent number: 10734602
    Abstract: A first damming wall and a second damming wall are provided in a frame region. The first damming wall surrounds a display region formed from a first organic material and overlaps with a circumferential end part of an organic layer. The second damming wall includes a top part formed from a second organic material in the periphery of the first damming wall, and overlaps with an edge of the circumferential end part of the organic layer. The second damming wall includes a bottom part located closer to a base substrate, the bottom part being formed from a material constituting parts of switching elements.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: August 4, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroki Taniyama, Tohru Okabe, Ryosuke Gunji, Shinsuke Saida, Akira Inoue, Yoshihiro Nakada
  • DISPLAY DEVICE, MANUFACTURING METHOD OF DISPLAY DEVICE, AND EXPOSURE DEVICE
    Publication number: 20200235195
    Abstract: A display device includes a plurality of picture elements, wherein a first electrode is formed in each of the plurality of picture elements, a cover layer is formed such that an opening of the first electrode is formed, a spacer in a layer identical to the cover layer is provided between two of the first electrodes, the spacer is formed with a height greater than a height of the cover layer, and an outer edge portion of the spacer is spaced from an outer edge portion of the cover layer.
    Type: Application
    Filed: September 29, 2017
    Publication date: July 23, 2020
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: SHINJI ICHIKAWA, HIROKI TANIYAMA, SHINSUKE SAIDA, RYOSUKE GUNJI, TOHRU OKABE, YOSHIHIRO NAKADA, HIROHARU JINMURA, AKIRA INOUE
  • FLEXIBLE DISPLAY DEVICE AND METHOD OF MANUFACTURING FLEXIBLE DISPLAY DEVICE
    Publication number: 20200219423
    Abstract: In a flexible organic EL display device, a first resin layer, which has an opening overlapping with a first conductive member, an opening overlapping with a second conductive member, and an opening and an opening overlapping with a third conductive member, is formed to fill a slit.
    Type: Application
    Filed: September 27, 2017
    Publication date: July 9, 2020
    Inventors: Tohru OKABE, Shinsuke SAIDA, Hiroki TANIYAMA, Ryosuke GUNJI, Shinji ICHIKAWA, Yoshihiro NAKADA, Hiroharu JINMURA, Akira INOUE
  • Active matrix substrate, manufacturing method therefor and display device
    Patent number: 10690975
    Abstract: Provided are an active-matrix substrate, a method for manufacturing the same, and a display device, which render it possible to inhibit electrostatic discharge from occurring during the process of manufacturing a display panel and suppress manufacturing cost. An IGZO film, which is positioned between a silicon oxide film included in a gate insulating film and an etch-stop layer, is annealed at 200 to 350° C. after a passivation film for protecting a TFT is formed. As a result, the passivation film is annealed, and the IGZO film is changed from a conductor to a semiconductor. Consequently, it is not only possible to suppress the occurrence of ESD, but also possible to eliminate the need to sever an electrostatic discharge prevention circuit from a display panel, resulting in a reduced cost of manufacturing a display device.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: June 23, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Okabe, Hirohiko Nishiki, Shinji Nakajima, Izumi Ishida, Shogo Murashige
  • METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE AND FILM FORMING APPARATUS
    Publication number: 20200194254
    Abstract: Provided is a method for manufacturing a semiconductor device, the semiconductor device including a substrate, and an oxide semiconductor TFT that is supported by the substrate and includes an oxide semiconductor film as an active layer. The method includes: (A) preparing MO gas containing a first organometallic compound that contains In and a second organometallic compound that contains Zn; and (B) supplying gas containing the MO gas and oxygen to the substrate placed in a chamber under a condition in which the substrate is heated to 500° C. or lower, and growing an oxide semiconductor film containing In and Zn on the substrate using an MOCVD method. Step (B) is performed under a condition in which plasma is formed in the chamber.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 18, 2020
    Inventors: Shinji NAKAJIMA, Hirohiko NISHIKI, Hirohide MIMURA, Yuhichi SAITOH, Yujiro TAKEDA, Shogo MURASHIGE, Izumi ISHIDA, Tohru OKABE
  • Display panel, display apparatus, and method for manufacturing display panel
    Patent number: 10685598
    Abstract: A wiring delay is prevented or reduced by lowering a wiring resistance without making a wire wider. The present invention includes: a light blocking film (102); a light-transmitting film (106); and a first wiring layer (105A) which serves as part of a wire configured to electrically control an amount of transmitted light for each pixel, the first wiring layer (105A) being provided over the light blocking film (102), and the light-transmitting film (106) being provided over the first wiring layer (105A) so as to cover a side surface of the first wiring layer.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: June 16, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Okabe, Hirohiko Nishiki, Shinji Nakajima, Izumi Ishida, Shogo Murashige
  • Active matrix substrate, method for producing same, and display device
    Patent number: 10670933
    Abstract: Provided are an active-matrix substrate having a reliable line connection structure, a method for producing the same, and a display device including the same. A first metal line 122 and a second metal line 125 are electrically connected via an IGZO layer 124 rendered conductive. In this case, the second metal line 125 is isolated from an ITO layer 109 without contacting the ITO layer 109 because there are a passivation layer 107 and an organic insulating film 108 formed between the second metal line 125 and the ITO layer 109. Thus, no contact fault due to electric corrosion occurs between an aluminum layer 125a of the second metal line 125 and the ITO layer 109, whereby a reliable line connection structure is achieved.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: June 2, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Okabe, Hirohiko Nishiki, Takeshi Yaneda
  • Display device
    Patent number: 10672854
    Abstract: A display device production method for producing a display device including a light emitting element in an active region and a terminal in a non-active region. The display device production method includes arranging a first mask overlapping with an electrode region of the light emitting element and a second mask overlapping with the terminal, on a conductive film that is arranged in the active region and the non-active region and that covers the terminal, and etching the conductive film.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: June 2, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Okabe, Hiroki Taniyama, Ryosuke Gunji, Shinsuke Saida, Hiroharu Jinmura, Yoshihiro Nakada, Akira Inoue