Patents by Inventor Tatsuya Kawasaki

Tatsuya Kawasaki 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: 20240124964
    Abstract: Provided is a galvanized steel sheet having a TS of 980 MPa or more, high YS, excellent ductility, strain hardenability, and hole expansion formability. A base steel sheet has a defined chemical composition and a steel microstructure as follows: area ratio of ferrite: 65.0% or less (including 0%), area ratio of bainitic ferrite: 5.0% or more and 40.0% or less, area ratio of tempered martensite: 0.5% or more and 80.0% or less, area ratio of retained austenite: 3.0% or more, area ratio of fresh martensite: 20.0% or less (including 0%), SBF+STM+2×SMA: 65.0% or more, SMA1/SMA: 0.80 or less, and SMA2/SMA: 0.20 or more.
    Type: Application
    Filed: March 18, 2022
    Publication date: April 18, 2024
    Applicant: JFE STEEL CORPORATION
    Inventors: Sho HIGUCHI, Yoshiyasu KAWASAKI, Tatsuya NAKAGAITO, Tomomi KANAZAWA, Shunsuke YAMAMOTO
  • Patent number: 11927860
    Abstract: An active matrix substrate includes a plurality of thin film transistors including an oxide semiconductor layer, an interlayer insulating layer, a plurality of pixel electrodes arranged above the interlayer insulating layer, a common electrode arranged between the pixel electrode and the interlayer insulating layer and also configured to function as a touch sensor electrode, a first dielectric layer arranged between the interlayer insulating layer and the common electrode, a second dielectric layer arranged between the common electrode and the pixel electrode, a plurality of touch wiring lines arranged between the interlayer insulating layer and the common electrode and formed of a third conductive film, and a plurality of pixel contact portions, in which each of the plurality of pixel contact portions includes a drain electrode of the thin film transistor, a connection electrode formed of the third conductive film and electrically connected to the drain electrode in a lower opening formed in the interlayer i
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: March 12, 2024
    Assignee: SHARP DISPLAY TECHNOLOGY CORPORATION
    Inventors: Yoshihito Hara, Tohru Daitoh, Hajime Imai, Teruyuki Ueda, Masaki Maeda, Tatsuya Kawasaki, Yoshiharu Hirata
  • Patent number: 11804498
    Abstract: The present invention has an object to reduce the number of necessary masks to reduce manufacturing cost. A method of manufacturing a display device includes: forming electrodes or first lines; forming a first insulating film covering the electrodes or the first lines; forming a second insulating film covering the first insulating film; collectively forming first contact holes through the first insulating film and the second insulating film so as to expose parts of the electrodes or parts of the first lines; planarizing a surface of the second insulating film; and forming a first conductive layer to be connected from the surface of the second insulating film to the exposed parts of the electrodes or the exposed parts of the first lines via the first contact holes.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: October 31, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tatsuya Kawasaki, Tohru Daitoh, Hajime Imai, Hideki Kitagawa, Yoshihito Hara, Masaki Maeda, Yoshiharu Hirata, Teruyuki Ueda
  • Publication number: 20230317739
    Abstract: The active matrix substrate includes a plurality of oxide semiconductor TFTs supported by a substrate. Each of the plurality of oxide semiconductor TFTs includes an oxide semiconductor layer including a channel region, a lower electrode positioned between the oxide semiconductor layer and the substrate, and an insulating layer positioned between the oxide semiconductor layer and the lower electrode. The insulating layer has a layered structure including a lower layer, an upper layer positioned between the lower layer and the oxide semiconductor layer, and an intermediate layer positioned between the lower layer and the upper layer. The upper layer is a silicon oxide layer, the intermediate layer contains at least silicon and nitrogen, and the lower layer contains at least silicon, nitrogen, and oxygen. A hydrogen desorption amount in the lower layer is larger than a hydrogen desorption amount in the intermediate layer.
    Type: Application
    Filed: April 4, 2023
    Publication date: October 5, 2023
    Inventors: Hajime IMAI, Tohru DAITOH, Yoshihito HARA, Tetsuo KIKUCHI, Teruyuki UEDA, Masaki MAEDA, Tatsuya KAWASAKI, Yoshiharu HIRATA
  • Publication number: 20230307465
    Abstract: An active matrix substrate includes a plurality of source bus lines, a lower insulating layer covering the source bus lines, a plurality of gate bus lines formed above the lower insulating layer, and an oxide semiconductor TFT disposed to correspond to each pixel area. The oxide semiconductor TFT includes an oxide semiconductor layer disposed on the lower insulating layer, and a gate electrode disposed above the oxide semiconductor layer. The gate electrode is formed in a different layer from the gate bus lines, and is disposed to be separated from another gate electrode disposed in an adjacent pixel area. The gate electrode is covered by an interlayer insulating layer. The gate bus line is disposed on the interlayer insulating layer and in a gate contact hole formed in the interlayer insulating layer, and is connected to the gate electrode in the gate contact hole.
    Type: Application
    Filed: May 18, 2023
    Publication date: September 28, 2023
    Inventors: Hajime IMAI, Tohru DAITOH, Teruyuki UEDA, Yoshihito HARA, Masaki MAEDA, Tatsuya KAWASAKI, Yoshiharu HIRATA, Tetsuo KIKUCHI
  • Patent number: 11721704
    Abstract: The oxide semiconductor layer is electrically connected to a source electrode or the source bus line within the source opening formed in the lower insulating layer, each wiring line connection section includes a lower conductive portion formed using the first conductive film, the lower insulating layer extending over the lower conductive portion, an oxide connection layer formed using an oxide film the same as the oxide semiconductor layer and electrically connected to the lower conductive portion within the lower opening formed in the lower insulating layer, an insulating layer covering the oxide connection layer, and an upper conductive portion electrically connected to the oxide connection layer within the upper opening formed in the insulating layer, wherein the oxide connection layer includes a region lower in a specific resistance than the channel region of the oxide semiconductor layer.
    Type: Grant
    Filed: February 7, 2022
    Date of Patent: August 8, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hajime Imai, Tohru Daitoh, Tetsuo Kikuchi, Masamitsu Yamanaka, Yoshihito Hara, Tatsuya Kawasaki, Masahiko Suzuki, Setsuji Nishimiya
  • Patent number: 11695020
    Abstract: An active matrix substrate includes a plurality of source bus lines, a lower insulating layer covering the source bus lines, a plurality of gate bus lines formed above the lower insulating layer, and an oxide semiconductor TFT disposed to correspond to each pixel area. The oxide semiconductor TFT includes an oxide semiconductor layer disposed on the lower insulating layer, and a gate electrode disposed above the oxide semiconductor layer. The gate electrode is formed in a different layer from the gate bus lines, and is disposed to be separated from another gate electrode disposed in an adjacent pixel area. The gate electrode is covered by an interlayer insulating layer. The gate bus line is disposed on the interlayer insulating layer and in a gate contact hole formed in the interlayer insulating layer, and is connected to the gate electrode in the gate contact hole.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: July 4, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hajime Imai, Tohru Daitoh, Teruyuki Ueda, Yoshihito Hara, Masaki Maeda, Tatsuya Kawasaki, Yoshiharu Hirata, Tetsuo Kikuchi
  • Patent number: 11668987
    Abstract: A display device includes a switching element having a pixel connection portion, a first insulating film having a first pixel contact hole formed therein so as to be in a place overlapping at least a part of the pixel connection portion, a common line, an intermediate electrode composed of the same conducting film as the common line, disposed to overlap the first pixel contact hole, and connected to the pixel connection portion, a common electrode not connected to the intermediate electrode but connected to the common line, a second insulating film having a second pixel contact hole formed therein so as to be in a place overlapping at least a part of the intermediate electrode, and a pixel electrode disposed so that at least a part of the pixel electrode overlaps the second pixel contact hole.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: June 6, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yoshihito Hara, Hajime Imai, Masaki Maeda, Tatsuya Kawasaki, Yoshiharu Hirata, Tohru Daitoh
  • Publication number: 20230136322
    Abstract: A cutting device includes: a cutting blade that advances toward and recedes from a continuous body of electrode plates or separators so as to cut the continuous body; and a cleaning member that advances and recedes together with the cutting blade and comes into contact with a cutting section of the continuous body and cleans the cutting section.
    Type: Application
    Filed: March 12, 2021
    Publication date: May 4, 2023
    Inventors: Yasushi TANIGUCHI, Tatsuya KAWASAKI, Noriyuki MARUYAMA, Noriaki YAMAMOTO, Takahiro KUHARA
  • Publication number: 20230082232
    Abstract: An active matrix substrate includes pixel regions each including a pixel electrode and an oxide semiconductor TFT including an oxide semiconductor layer. Each pixel electrode is electrically connected to one of adjacent two of source bus lines. The oxide semiconductor layer in the oxide semiconductor TFT of each pixel region overlaps the pixel electrode of a first adjacent pixel region. The pixel electrode of the each pixel region partially overlaps the oxide semiconductor layer in a second adjacent pixel region. The source bus lines include first and second source bus lines adjacent to each other. Pixels sets each including two pixel regions whose pixel electrodes are connected to the first source bus line and pixel sets each including two pixel regions whose pixel electrodes are connected to the second source bus line are arranged alternately between the first and second source bus lines.
    Type: Application
    Filed: September 6, 2022
    Publication date: March 16, 2023
    Inventors: Tatsuya KAWASAKI, Tohru DAITOH, Hajime IMAI, Teruyuki UEDA, Masaki MAEDA, Yoshiharu HIRATA, Yoshihito HARA
  • Patent number: 11569324
    Abstract: An active matrix substrate includes a first TFT and a second TFT, in which the first TFT includes a first oxide semiconductor layer and a first gate electrode arranged on a part of the first oxide semiconductor layer with a first gate insulating layer interposed therebetween, the first gate insulating layer has a layered structure including a first insulating film and a second insulating film arranged on the first insulating film, the second TFT includes a second oxide semiconductor layer having a higher mobility than the first oxide semiconductor layer and a second gate electrode arranged on a part of the second oxide semiconductor layer with a second gate insulating layer interposed therebetween, and the second gate insulating layer includes the second insulating film and does not include the first insulating film, and the second TFT further includes a lower insulating layer including the first insulating film arranged between the second oxide semiconductor layer and a substrate.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: January 31, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hajime Imai, Tohru Daitoh, Teruyuki Ueda, Yoshihito Hara, Masaki Maeda, Tatsuya Kawasaki, Yoshiharu Hirata
  • Publication number: 20220342246
    Abstract: An active matrix substrate includes a plurality of thin film transistors including an oxide semiconductor layer, an interlayer insulating layer, a plurality of pixel electrodes arranged above the interlayer insulating layer, a common electrode arranged between the pixel electrode and the interlayer insulating layer and also configured to function as a touch sensor electrode, a first dielectric layer arranged between the interlayer insulating layer and the common electrode, a second dielectric layer arranged between the common electrode and the pixel electrode, a plurality of touch wiring lines arranged between the interlayer insulating layer and the common electrode and formed of a third conductive film, and a plurality of pixel contact portions, in which each of the plurality of pixel contact portions includes a drain electrode of the thin film transistor, a connection electrode formed of the third conductive film and electrically connected to the drain electrode in a lower opening formed in the interlayer i
    Type: Application
    Filed: April 11, 2022
    Publication date: October 27, 2022
    Inventors: Yoshihito HARA, Tohru DAITOH, Hajime IMAI, Teruyuki UEDA, Masaki MAEDA, Tatsuya KAWASAKI, Yoshiharu HIRATA
  • Patent number: 11476282
    Abstract: An active matrix substrate includes gate bus lines; source bus lines; a lower insulating layer; an oxide semiconductor TFT; and a pixel electrode, in which the oxide semiconductor TFT includes an oxide semiconductor layer disposed on the lower insulating layer, a gate electrode, a source electrode, and a first ohmic conductive portion that is coupled to the oxide semiconductor layer and the source electrode, the lower insulating layer includes a source opening portion exposing at least a portion of the source electrode, the first ohmic conductive portion is disposed on the lower insulating layer and in the source opening portion and is in direct contact with at least the portion of the source electrode in the source opening portion, and the first region of the oxide semiconductor layer is in direct contact with an upper surface of the first ohmic conductive portion.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: October 18, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yoshihito Hara, Tohru Daitoh, Hajime Imai, Masaki Maeda, Tatsuya Kawasaki, Hideki Kitagawa, Yoshiharu Hirata
  • Publication number: 20220283674
    Abstract: An in-cell touch panel includes a plurality of source lines, a source redundant line, a touch sensor line formed in the same layer as the plurality of source lines or the source redundant line, an organic insulating layer formed in a layer above the touch sensor line, and a common electrode formed in a layer above the organic insulating layer. A contact hole in which part of the common electrode is arranged is formed in the organic insulating layer above the touch sensor line, and the common electrode is connected to the touch sensor line via the contact hole.
    Type: Application
    Filed: March 1, 2022
    Publication date: September 8, 2022
    Inventors: MASAKI MAEDA, TOHRU DAITOH, HAJIME IMAI, YOSHIHITO HARA, TERUYUKI UEDA, YOSHIHARU HIRATA, TATSUYA KAWASAKI
  • Publication number: 20220285405
    Abstract: An active matrix substrate includes a substrate and a plurality of oxide semiconductor TFTs supported on the substrate, in which each of oxide semiconductor TFT includes an oxide semiconductor layer including a first region and a second region having a specific resistance lower than a specific resistance of the first region, and a gate electrode disposed on at least a part of the first region with a gate insulating layer interposed therebetween, the gate insulating layer includes a first insulating layer and a second insulating layer disposed on the first insulating layer, and, when viewed from a normal direction of the substrate, the first insulating layer overlaps with the first region and does not overlap with the second region and the second insulating layer overlaps with the first region and at least a part of the second region.
    Type: Application
    Filed: March 4, 2022
    Publication date: September 8, 2022
    Inventors: Hajime IMAI, Tohru DAITOH, Teruyuki UEDA, Yoshihito HARA, Masaki MAEDA, Tatsuya KAWASAKI, Yoshiharu HIRATA
  • Patent number: 11426903
    Abstract: A powdery liquid-crystal resin for a press-molded article is disclosed having a bulk density of more than 0.05 g/cm3 and 0.5 g/cm3 or less. The powdery liquid-crystal resin preferably has a particle diameter distribution width as defined by JIS Z8825: 2013 of 3.0 or more and 12 or less. The powdery liquid-crystal resin preferably has an average particle diameter of 10 ?m or more and 300 ?m or less. The degree of crystallinity of the powdery liquid-crystal resin is preferably 20% or more and 70% or less.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: August 30, 2022
    Assignee: POLYPLASTICS CO., LTD.
    Inventors: Yoshiaki Taguchi, Tatsuya Kawasaki
  • Publication number: 20220157855
    Abstract: The oxide semiconductor layer is electrically connected to a source electrode or the source bus line within the source opening formed in the lower insulating layer, each wiring line connection section includes a lower conductive portion formed using the first conductive film, the lower insulating layer extending over the lower conductive portion, an oxide connection layer formed using an oxide film the same as the oxide semiconductor layer and electrically connected to the lower conductive portion within the lower opening formed in the lower insulating layer, an insulating layer covering the oxide connection layer, and an upper conductive portion electrically connected to the oxide connection layer within the upper opening formed in the insulating layer, wherein the oxide connection layer includes a region lower in a specific resistance than the channel region of the oxide semiconductor layer.
    Type: Application
    Filed: February 7, 2022
    Publication date: May 19, 2022
    Inventors: Hajime IMAI, Tohru DAITOH, Tetsuo KIKUCHI, Masamitsu YAMANAKA, Yoshihito HARA, Tatsuya KAWASAKI, Masahiko SUZUKI, Setsuji NISHIMIYA
  • Patent number: 11296126
    Abstract: The oxide semiconductor layer is electrically connected to a source electrode or the source bus line within the source opening formed in the lower insulating layer, each wiring line connection section includes a lower conductive portion formed using the first conductive film, the lower insulating layer extending over the lower conductive portion, an oxide connection layer formed using an oxide film the same as the oxide semiconductor layer and electrically connected to the lower conductive portion within the lower opening formed in the lower insulating layer, an insulating layer covering the oxide connection layer, and an upper conductive portion electrically connected to the oxide connection layer within the upper opening formed in the insulating layer, wherein the oxide connection layer includes a region lower in a specific resistance than the channel region of the oxide semiconductor layer.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: April 5, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hajime Imai, Tohru Daitoh, Tetsuo Kikuchi, Masamitsu Yamanaka, Yoshihito Hara, Tatsuya Kawasaki, Masahiko Suzuki, Setsuji Nishimiya
  • Patent number: 11215891
    Abstract: An active matrix substrate includes: a substrate; lower bus lines and upper bus lines; a lower insulating layer positioned between the lower bus lines and the upper bus lines; an oxide semiconductor TFT that are disposed in each pixel region and have an oxide semiconductor layer disposed on the lower insulating layer; pixel electrodes disposed in each pixel region; and wiring connection units arranged in a non-display region. Each wiring connection unit includes: a lower conductive layer formed using the same conductive film as the lower bus lines; an insulating layer that extends on the lower conductive layer and includes the lower insulating layer. The lower bus lines and the lower conductive layer have a first laminated structure including a metal layer and a transparent conductive layer that covers an upper surface and a side surface of the metal layer.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: January 4, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hideki Kitagawa, Yoshihito Hara, Masaki Maeda, Yoshiharu Hirata, Tatsuya Kawasaki, Teruyuki Ueda, Hajime Imai, Tohru Daitoh
  • Publication number: 20210384276
    Abstract: An active matrix substrate includes a first TFT and a second TFT, in which the first TFT includes a first oxide semiconductor layer and a first gate electrode arranged on a part of the first oxide semiconductor layer with a first gate insulating layer interposed therebetween, the first gate insulating layer has a layered structure including a first insulating film and a second insulating film arranged on the first insulating film, the second TFT includes a second oxide semiconductor layer having a higher mobility than the first oxide semiconductor layer and a second gate electrode arranged on a part of the second oxide semiconductor layer with a second gate insulating layer interposed therebetween, and the second gate insulating layer includes the second insulating film and does not include the first insulating film, and the second TFT further includes a lower insulating layer including the first insulating film arranged between the second oxide semiconductor layer and a substrate.
    Type: Application
    Filed: June 4, 2021
    Publication date: December 9, 2021
    Inventors: Hajime IMAI, Tohru DAITOH, Teruyuki UEDA, Yoshihito HARA, Masaki MAEDA, Tatsuya KAWASAKI, Yoshiharu HIRATA