Patents by Inventor Yohsuke Kanzaki

Yohsuke Kanzaki 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: 20190372032
    Abstract: In a right PI layer inclined area, a photosensitive PI layer covering an underlying PI layer exposed from an inorganic film of a moisture-proof layer, a gate insulating layer, a second insulating layer, and a third insulating layer is formed.
    Type: Application
    Filed: August 28, 2017
    Publication date: December 5, 2019
    Inventors: Seiji KANEKO, Yohsuke KANZAKI, Takao SAITOH, Masahiko MIWA, Masaki YAMANAKA
  • Publication number: 20190371829
    Abstract: In formation of a gate electrode, a metal film forming a gate electrode of TFT is formed on a gate insulating film covering a semiconductor layer having an island shape, the gate electrode is formed on the metal film by dry etching, and the exposed gate electrode is subjected to a plasma treatment using oxygen or nitrogen. This prevents formation of needle-shaped or granular crystal while a reduction in production efficiency is suppressed.
    Type: Application
    Filed: February 28, 2017
    Publication date: December 5, 2019
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Takao SAITOH, Yohsuke KANZAKI, Masahiko MIWA, Masaki YAMANAKA, Seiji KANEKO
  • Publication number: 20190372034
    Abstract: At a bending section of a frame region, an insulating film with a groove formed on a front surface of the insulating film is provided, the groove extending in a direction intersecting one side of a display region on a terminal section side, and a frame wiring line is provided, at the bending section, to be bent to intersect the groove between the insulating film and a protection film.
    Type: Application
    Filed: August 4, 2017
    Publication date: December 5, 2019
    Inventors: Seiji KANEKO, Yohsuke KANZAKI, Takao SAITOH, Masahiko MIWA, Masaki YAMANAKA
  • Patent number: 10497725
    Abstract: A method includes a conductive film forming process of forming a conductive film 51 covering a gate insulation film IS and a semiconductor film 42, the gate insulation film 45 covering a gate electrode 37G and a gate line 35G formed on a glass substrate 32 and the semiconductor film 42 formed on the gate insulation film 45 while overlapping the gate electrode 37G, a first etching process of etching the conductive film 51 and forming a source conductive film 46S connected to the semiconductor film 42 and a drain conductive film 46D connected to the semiconductor film 42, a resist forming process performed after the first etching process and forming a resist 53R covering the semiconductor film 42, the source conductive film 46S, and the drain conductive film 46D, and a second etching process performed after the resist forming process and performing etching for removing the conductive film 51 while using the resist 53R as a mask.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: December 3, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takao Saitoh, Yohsuke Kanzaki, Kazuatsu Ito, Seiji Kaneko
  • Publication number: 20190362656
    Abstract: A flexible organic EL display device includes a polycrystalline silicon layer in which an extent of alignment of a silicon crystal orientation by electron back scatter diffraction patterns with a 001 plane is greater than or equal to 3.
    Type: Application
    Filed: June 30, 2017
    Publication date: November 28, 2019
    Inventors: Takao SAITOH, Masaki YAMANAKA, Yohsuke KANZAKI, Seiji KANEKO, Masahiko MIWA
  • Publication number: 20190363152
    Abstract: In a part of a frame region defined around a display region, an insulating film having a slit formed on a front surface of the insulating film to extend in a direction intersecting an edge of the display region is provided, and a frame wiring line connected to a light-emitting element of the display region is provided, on the insulating film, to be bent to stride across the slit.
    Type: Application
    Filed: September 12, 2017
    Publication date: November 28, 2019
    Inventors: Yohsuke KANZAKI, Takao SAITOH, Masahiko MIWA, Masaki YAMANAKA, Seiji KANEKO
  • Publication number: 20190363154
    Abstract: A photosensitive PI layer fills a bending region and is formed on a third insulating layer in a display region and a terminal region. An opening is formed in the photosensitive PI layer while exposing a gate electrode extension wiring line. A contact hole is formed in a second insulating layer and the third insulating layer.
    Type: Application
    Filed: August 10, 2017
    Publication date: November 28, 2019
    Inventors: Seiji KANEKO, Yohsuke KANZAKI, Takao SAITOH, Masaki YAMANAKA, Masahiko MIWA
  • Publication number: 20190363172
    Abstract: In formation of a gate electrode, a second metal film is formed on a first metal film by adding oxygen or nitrogen in an inert gas atmosphere, the first metal film and the second metal film are patterned and subjected to a plasma treatment using oxygen or nitrogen, to form a third metal film. Thus, a gate electrode is formed. This prevents formation of needle-shaped or granular crystal while a reduction in production efficiency is suppressed.
    Type: Application
    Filed: March 7, 2017
    Publication date: November 28, 2019
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Takao SAITOH, Yohsuke KANZAKI, Masahiko MIWA, Masaki YAMANAKA, Seiji KANEKO
  • Publication number: 20190355800
    Abstract: At a bending section of a frame region, an opening portion is formed on at least one layer of inorganic film included in a TFT layer, in which a residual layer of the inorganic film is formed, a flattening film is provided to plug the opening portion, and the frame wiring line is provided on the flattening film.
    Type: Application
    Filed: August 3, 2017
    Publication date: November 21, 2019
    Inventors: Takao SAITOH, Yohsuke KANZAKI, Seiji KANEKO, Masahiko MIWA, Masaki YAMANAKA
  • Publication number: 20190326383
    Abstract: The frame wiring line provided in a frame region includes, at a bending section, a plurality of branch wiring lines being divided into a plurality of branches, wherein the plurality of branch wiring lines are arranged at at least two types of heights relative to a resin substrate.
    Type: Application
    Filed: August 22, 2017
    Publication date: October 24, 2019
    Inventors: Masaki YAMANAKA, Yohsuke KANZAKI, Takao SAITOH, Masahiko MIWA, Seiji KANEKO
  • Patent number: 10388676
    Abstract: An active matrix substrate (1001) includes a connecting portion (101). The connecting portion. (101) includes a lower conductive layer supported by a substrate; a first insulating layer formed so as to cover the lower conductive layer (2) and having a contact hole (6p) that exposes a part of the lower conductive layer (2); a bottom conductive film (4) that is disposed in the contact hole (6p) and covers at least a part of the exposed part of the lower conductive layer (2), the exposed part being exposed by the contact hole (6p); a second insulating layer (9) that is formed on the first insulating layer (6) and in the contact hole (6p), is in contact with the bottom conductive film (4) in the contact hole (6p), and has an opening (9p) that exposes a part of the bottom conductive film (4); and an upper conductive layer (8) that is disposed on the second insulating layer (9) and in the opening (9p) and is in contact with the bottom conductive film (4) in the opening (9p).
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: August 20, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takao Saitoh, Yohsuke Kanzaki, Makoto Nakazawa, Kazuatsu Ito, Seiji Kaneko
  • Patent number: 10355040
    Abstract: An off-leakage current of a photodiode is reduced in a photoelectric conversion device. A photoelectric conversion device (100) includes: an oxide semiconductor layer (5) provided on a substrate (1); a passivation film (6) and a planarizing film (7) which are stacked on the oxide semiconductor layer; and a photodiode (9) including a lower electrode (91), a photoelectric conversion layer (92), and an upper electrode (93). The lower electrode is connected to a source electrode (4) via a contact hole provided in the passivation film and the planarizing film. No photoelectric conversion layer is provided directly above the contact hole.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: July 16, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kazuatsu Ito, Seiji Kaneko, Yohsuke Kanzaki, Takao Saitoh, Tadayoshi Miyamoto
  • Publication number: 20190207032
    Abstract: In a semiconductor device including a semiconductor layer made of an oxide semiconductor, occurrence of variance in the characteristics of TFTs is suppressed. In a manufacturing process of a semiconductor device (100) where a passivation film (17) is to be formed at an upper layer of a semiconductor layer (11) made of an oxide semiconductor, deposition conditions of the passivation film (17) are set such that the proportion of pure metal (the ratio of pure metal to all the components of the semiconductor layer (11)) at an interface of the semiconductor layer (11) to the passivation film (17) becomes higher than the proportion of pure metal in the bulk of the semiconductor layer (11).
    Type: Application
    Filed: March 6, 2019
    Publication date: July 4, 2019
    Inventors: Takao SAITOH, Yohsuke KANZAKI, Yutaka TAKAMARU, Keisuke IDE, Seiji KANEKO
  • Patent number: 10340390
    Abstract: One of the upper surface and the lower surface of a semiconductor layer (7) of a thin-film transistor (101) in a semiconductor device (100) is in contact with a gate insulating layer (5), and the other is in contact with a first insulating layer (11) containing silicon oxide. The semiconductor layer (7) includes a first and second oxide semiconductor layers (7A, 7B). The first oxide semiconductor layer (7A) is arranged on a gate insulating layer side of the second oxide semiconductor layer (7B) and is in contact with the second oxide semiconductor layer. The second oxide semiconductor layer (7B) contains In and Ga and does not contain Sn. The first oxide semiconductor layer (7A) contains In, Sn, and Zn. The percentage of Zn in the first oxide semiconductor layer (7A) in the depth direction does not have a maximum value in the vicinity of a surface of the first oxide semiconductor layer adjacent to the second oxide semiconductor layer.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: July 2, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yohsuke Kanzaki, Takao Saitoh, Yutaka Takamaru, Keisuke Ide, Seiji Kaneko
  • Patent number: 10269831
    Abstract: A semiconductor device includes, a plurality of oxide semiconductor TFTs including a first gate electrode, a first insulating layer in contact with the first gate electrode, an oxide semiconductor layer opposing the first gate electrode via the first insulating layer, a source electrode and a drain electrode which are connected with the oxide semiconductor layer, and an organic insulating layer covering only some of the plurality of oxide semiconductor TFTs, wherein the plurality of oxide semiconductor TFTs include a first TFT which is covered with the organic insulating layer and a second TFT which is not covered with the organic insulating layer, and the second TFT includes a second gate electrode opposing the oxide semiconductor layer via a second insulating layer, the second gate electrode being arranged to overlap with at least a portion of the first gate electrode with the oxide semiconductor layer interposed therebetween.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: April 23, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takao Saitoh, Seiji Kaneko, Yohsuke Kanzaki, Yutaka Takamaru, Keisuke Ide, Takuya Matsuo, Shigeyasu Mori, Hiroshi Matsukizono
  • Patent number: 10256346
    Abstract: In a semiconductor device including a semiconductor layer made of an oxide semiconductor, occurrence of variance in the characteristics of TFTs is suppressed. In a manufacturing process of a semiconductor device (100) where a passivation film (17) is to be formed at an upper layer of a semiconductor layer (11) made of an oxide semiconductor, deposition conditions of the passivation film (17) are set such that the proportion of pure metal (the ratio of pure metal to all the components of the semiconductor layer (11)) at an interface of the semiconductor layer (11) to the passivation film (17) becomes higher than the proportion of pure metal in the bulk of the semiconductor layer (11).
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: April 9, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takao Saitoh, Yohsuke Kanzaki, Yutaka Takamaru, Keisuke Ide, Seiji Kaneko
  • Publication number: 20190081075
    Abstract: A method of producing a semiconductor device according to an embodiment of the present invention includes: step (C) of forming an oxide semiconductor layer of a plurality of thin film transistors on a gate dielectric layer; step (F) of forming an aperture in an interlevel dielectric layer, the aperture being located between an active region and a plurality of terminal portions and extending through the interlevel dielectric layer; and step (G) of, after step (F), forming an upper conductive portion on the interlevel dielectric layer. In step (C), a protection layer made of the same oxide semiconductor film as the oxide semiconductor layer is formed above a region of the gate dielectric layer that is located between the active region and the plurality of terminal portions. In step (F), the aperture is formed so as to overlap the protection layer.
    Type: Application
    Filed: February 21, 2017
    Publication date: March 14, 2019
    Inventors: Kazuatsu ITO, Seiji KANEKO, Yohsuke KANZAKI, Takao SAITOH, Makoto NAKAZAWA
  • Publication number: 20190051678
    Abstract: A method includes a conductive film forming process of forming a conductive film 51 covering a gate insulation film IS and a semiconductor film 42, the gate insulation film 45 covering a gate electrode 37G and a gate line 35G formed on a glass substrate 32 and the semiconductor film 42 formed on the gate insulation film 45 while overlapping the gate electrode 37G, a first etching process of etching the conductive film 51 and forming a source conductive film 46S connected to the semiconductor film 42 and a drain conductive film 46D connected to the semiconductor film 42, a resist forming process performed after the first etching process and forming a resist 53R covering the semiconductor film 42, the source conductive film 46S, and the drain conductive film 46D, and a second etching process performed after the resist forming process and performing etching for removing the conductive film 51 while using the resist 53R as a mask.
    Type: Application
    Filed: February 17, 2017
    Publication date: February 14, 2019
    Inventors: TAKAO SAITOH, YOHSUKE KANZAKI, KAZUATSU ITO, SEIJI KANEKO
  • Publication number: 20190043990
    Abstract: A thin film transistor (TFT) 11 includes a gate electrode 11a, a channel section 11d formed of an oxide semiconductor film 17, a source electrode 11b connected to one end of the channel section 11d, and a drain electrode 11c connected to another end of the channel section 11d, and the oxide semiconductor film 17 is an oxide semiconductor containing at least gallium and indium and an atomic ratio Ga/(Ga+In) is from 1/4.2 to 1/3.3.
    Type: Application
    Filed: February 21, 2017
    Publication date: February 7, 2019
    Inventors: Yohsuke KANZAKI, Takao SAITOH, Seiji KANEKO
  • Publication number: 20190035824
    Abstract: A semiconductor device includes: a first thin film transistor (101) including a crystalline silicon semiconductor layer (13); and a second thin film transistor (102) including an oxide semiconductor layer (23).
    Type: Application
    Filed: January 16, 2017
    Publication date: January 31, 2019
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Takao SAITOH, Yohsuke KANZAKI, Makoto NAKAZAWA, Kazuatsu ITO, Seiji KANEKO