Patents by Inventor Yoshiaki Nakayoshi

Yoshiaki Nakayoshi 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: 10823992
    Abstract: There is provided a liquid crystal display (LCD) device that prevents light leaks near spacers. The LCD device controls the optical transmissivity of a liquid crystal layer interposed between substrates disposed opposite each other, by means of an electric field generated in the layer-thickness direction of the liquid crystal layer. The LCD device includes spacers on a liquid-crystal-side surface of one substrate, signal lines formed on a liquid-crystal-side surface of the other substrate, an insulating film formed to cover the signal lines, and electrodes on the insulating film's upper surface. Each electrode contributes to controlling the optical transmissivity of the liquid crystal layer. Each spacer has a vertex surface disposed opposite to the signal lines. A portion of each electrode extends to the upper surface of a corresponding signal line. The extended portion is opposite to a part of a spacer's vertex surface disposed opposite to the corresponding signal line.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: November 3, 2020
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi, Masatoshi Wakagi
  • Patent number: 10725350
    Abstract: Image display device having an electrode forming layer which includes a plurality of gate lines, a plurality of drain lines, a plurality of switching elements and the a plurality of pixel electrodes, and having reference electrode layer between the electrode forming layer and a substrate where the electrode forming layer formed thereon, and the reference electrode layer and the electrode forming layer are insulated by insulating layer.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: July 28, 2020
    Assignees: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Yoshiaki Nakayoshi, Kazuhiko Yanagawa
  • Patent number: 10634961
    Abstract: A liquid crystal display includes a first substrate and a second substrate opposed to each other with liquid crystal therebetween. A first pixel including a first TFT element and a first pixel electrode formed of a transparent conducting layer and disposed over the first substrate. A second pixel, adjacent to the first pixel, including a second TFT element and a second pixel electrode formed of a transparent conducting layer and disposed over the first substrate. A gate signal line disposed over the first substrate, is connected to the first and the second TFT elements. A drain signal line disposed over the first substrate and between the first and the second pixel electrodes, is connected to the second TFT element. A counter electrode formed of a transparent conducting layer and disposed over the first substrate, and is overlapped with the first and the second pixel electrodes and the drain signal line.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: April 28, 2020
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
  • Publication number: 20200012133
    Abstract: There is provided a liquid crystal display (LCD) device that prevents light leaks near spacers. The LCD device controls the optical transmissivity of a liquid crystal layer interposed between substrates disposed opposite each other, by means of an electric field generated in the layer-thickness direction of the liquid crystal layer. The LCD device includes spacers on a liquid-crystal-side surface of one substrate, signal lines formed on a liquid-crystal-side surface of the other substrate, an insulating film formed to cover the signal lines, and electrodes on the insulating film's upper surface. Each electrode contributes to controlling the optical transmissivity of the liquid crystal layer. Each spacer has a vertex surface disposed opposite to the signal lines. A portion of each electrode extends to the upper surface of a corresponding signal line. The extended portion is opposite to a part of a spacer's vertex surface disposed opposite to the corresponding signal line.
    Type: Application
    Filed: September 18, 2019
    Publication date: January 9, 2020
    Inventors: Kazuhiko YANAGAWA, Yasushi IWAKABE, Yoshiaki NAKAYOSHI, Masatoshi WAKAGI
  • Patent number: 10466519
    Abstract: There is provided a liquid crystal display (LCD) device that prevents light leaks near spacers. The LCD device controls the optical transmissivity of a liquid crystal layer interposed between substrates disposed opposite each other, by means of an electric field generated in the layer-thickness direction of the liquid crystal layer. The LCD device includes spacers on a liquid-crystal-side surface of one substrate, signal lines formed on a liquid-crystal-side surface of the other substrate, an insulating film formed to cover the signal lines, and electrodes on the insulating film's upper surface. Each electrode contributes to controlling the optical transmissivity of the liquid crystal layer. Each spacer has a vertex surface disposed opposite to the signal lines. A portion of each electrode extends to the upper surface of a corresponding signal line. The extended portion is opposite to a part of a spacer's vertex surface disposed opposite to the corresponding signal line.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: November 5, 2019
    Assignees: Japan Dlsplay Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi, Masatoshi Wakagi
  • Publication number: 20190265558
    Abstract: Image display device having an electrode forming layer which includes a plurality of gate lines, a plurality of drain lines, a plurality of switching elements and the a plurality of pixel electrodes, and having reference electrode layer between the electrode forming layer and a substrate where the electrode forming layer formed thereon, and the reference electrode layer and the electrode forming layer are insulated by insulating layer.
    Type: Application
    Filed: May 8, 2019
    Publication date: August 29, 2019
    Inventors: Yoshiaki NAKAYOSHI, Kazuhiko YANAGAWA
  • Patent number: 10330989
    Abstract: Image display device having an electrode forming layer which includes a plurality of gate lines, a plurality of drain lines, a plurality of switching elements and the a plurality of pixel electrodes, and having reference electrode layer between the electrode forming layer and a substrate where the electrode forming layer formed thereon, and the reference electrode layer and the electrode forming layer are insulated by insulating layer.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: June 25, 2019
    Assignees: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Yoshiaki Nakayoshi, Kazuhiko Yanagawa
  • Publication number: 20190056629
    Abstract: A liquid crystal display includes a first substrate and a second substrate opposed to each other with liquid crystal therebetween. A first pixel including a first TFT element and a first pixel electrode formed of a transparent conducting layer and disposed over the first substrate. A second pixel, adjacent to the first pixel, including a second TFT element and a second pixel electrode formed of a transparent conducting layer and disposed over the first substrate. A gate signal line disposed over the first substrate, is connected to the first and the second TFT elements. A drain signal line disposed over the first substrate and between the first and the second pixel electrodes, is connected to the second TFT element. A counter electrode formed of a transparent conducting layer and disposed over the first substrate, and is overlapped with the first and the second pixel electrodes and the drain signal line.
    Type: Application
    Filed: October 19, 2018
    Publication date: February 21, 2019
    Inventors: Kikuo ONO, Makoto YONEYA, Tsunenori YAMAMOTO, Junichi HIRAKATA, Yoshiaki NAKAYOSHI
  • Patent number: 10139687
    Abstract: A liquid crystal display includes a first substrate and a second substrate opposed to each other with a liquid crystal layer between the first substrate and the second substrate. The first substrate has a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel regions are defined by the drain signal lines and the gate signal lines. Each of the pixel regions includes a first electrode having a plurality of strip-like portions extending in an extension direction of the drain signal lines, the strip-like portions having at least one bent portion so that extension directions of each two parts of the strip-like portions separated by the at least one bent portion are different from each other, and a second electrode formed between the first substrate and the first electrode, and being overlapped with the strip-like portions in plan view.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: November 27, 2018
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
  • Publication number: 20180252953
    Abstract: There is provided a liquid crystal display (LCD) device that prevents light leaks near spacers. The LCD device controls the optical transmissivity of a liquid crystal layer interposed between substrates disposed opposite each other, by means of an electric field generated in the layer-thickness direction of the liquid crystal layer. The LCD device includes spacers on a liquid-crystal-side surface of one substrate, signal lines formed on a liquid-crystal-side surface of the other substrate, an insulating film formed to cover the signal lines, and electrodes on the insulating film's upper surface. Each electrode contributes to controlling the optical transmissivity of the liquid crystal layer. Each spacer has a vertex surface disposed opposite to the signal lines. A portion of each electrode extends to the upper surface of a corresponding signal line. The extended portion is opposite to a part of a spacer's vertex surface disposed opposite to the corresponding signal line.
    Type: Application
    Filed: May 2, 2018
    Publication date: September 6, 2018
    Inventors: Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi, Masatoshi Wakagi
  • Patent number: 10018859
    Abstract: There is provided a liquid crystal display (LCD) device that prevents light leaks near spacers. The LCD device controls the optical transmissivity of a liquid crystal layer interposed between substrates disposed opposite each other, by means of an electric field generated in the layer-thickness direction of the liquid crystal layer. The LCD device includes spacers on a liquid-crystal-side surface of one substrate, signal lines formed on a liquid-crystal-side surface of the other substrate, an insulating film formed to cover the signal lines, and electrodes on the insulating film's upper surface. Each electrode contributes to controlling the optical transmissivity of the liquid crystal layer. Each spacer has a vertex surface disposed opposite to the signal lines. A portion of each electrode extends to the upper surface of a corresponding signal line. The extended portion is opposite to a part of a spacer's vertex surface disposed opposite to the corresponding signal line.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: July 10, 2018
    Assignees: Japan DIsplay Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi, Masatoshi Wakagi
  • Patent number: 9857643
    Abstract: A liquid crystal display includes a first substrate and a second substrate opposed to each other with a liquid crystal layer between the first substrate and the second substrate. The first substrate has a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel regions are defined by the drain signal lines and the gate signal lines. Each of the pixel regions includes a first electrode having a plurality of strip-like portions extending in an extension direction of the drain signal lines, the strip-like portions having at least one bent portion so that extension directions of each two parts of the strip-like portions separated by the at least one bent portion are different from each other, and a second electrode formed between the first substrate and the first electrode, and being overlapped with the strip-like portions in plan view.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: January 2, 2018
    Assignees: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
  • Publication number: 20170269414
    Abstract: There is provided a liquid crystal display (LCD) device that prevents light leaks near spacers. The LCD device controls the optical transmissivity of a liquid crystal layer interposed between substrates disposed opposite each other, by means of an electric field generated in the layer-thickness direction of the liquid crystal layer. The LCD device includes spacers on a liquid-crystal-side surface of one substrate, signal lines formed on a liquid-crystal-side surface of the other substrate, an insulating film formed to cover the signal lines, and electrodes on the insulating film's upper surface. Each electrode contributes to controlling the optical transmissivity of the liquid crystal layer. Each spacer has a vertex surface disposed opposite to the signal lines. A portion of each electrode extends to the upper surface of a corresponding signal line. The extended portion is opposite to a part of a spacer's vertex surface disposed opposite to the corresponding signal line.
    Type: Application
    Filed: June 8, 2017
    Publication date: September 21, 2017
    Inventors: Kazuhiko YANAGAWA, Yasushi IWAKABE, Yoshiaki NAKAYOSHI, Masatoshi WAKAGI
  • Patent number: 9715132
    Abstract: There is provided a liquid crystal display (LCD) device that prevents light leaks near spacers. The LCD device controls the optical transmissivity of a liquid crystal layer interposed between substrates disposed opposite each other, by means of an electric field generated in the layer-thickness direction of the liquid crystal layer. The LCD device includes spacers on a liquid-crystal-side surface of one substrate, signal lines formed on a liquid-crystal-side surface of the other substrate, an insulating film formed to cover the signal lines, and electrodes on the insulating film's upper surface. Each electrode contributes to controlling the optical transmissivity of the liquid crystal layer. Each spacer has a vertex surface disposed opposite to the signal lines. A portion of each electrode extends to the upper surface of a corresponding signal line. The extended portion is opposite to a part of a spacer's vertex surface disposed opposite to the corresponding signal line.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: July 25, 2017
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi, Masatoshi Wakagi
  • Patent number: 9632370
    Abstract: A liquid crystal display includes a first substrate and a second substrate opposed to each other with a liquid crystal layer between the first substrate and the second substrate. The first substrate has a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel regions are defined by the drain signal lines and the gate signal lines. Each of the pixel regions includes a first electrode having a plurality of strip-like portions extending in an extension direction of the drain signal lines, the strip-like portions having at least one bent portion so that extension directions of each two parts of the strip-like portions separated by the at least one bent portion are different from each other, and a second electrode formed between the first substrate and the first electrode, and being overlapped with the strip-like portions in plan view.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: April 25, 2017
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
  • Publication number: 20170010509
    Abstract: Image display device having an electrode forming layer which includes a plurality of gate lines, a plurality of drain lines, a plurality of switching elements and the a plurality of pixel electrodes, and having reference electrode layer between the electrode forming layer and a substrate where the electrode forming layer formed thereon, and the reference electrode layer and the electrode forming layer are insulated by insulating layer.
    Type: Application
    Filed: September 21, 2016
    Publication date: January 12, 2017
    Inventors: Yoshiaki NAKAYOSHI, Kazuhiko YANAGAWA
  • Patent number: 9488883
    Abstract: A liquid crystal display includes a first substrate and a second substrate opposed to each other with a liquid crystal layer between the first substrate and the second substrate. The first substrate has a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel regions are defined by the drain signal lines and the gate signal lines. Each of the pixel regions includes a first electrode having a plurality of strip-like portions extending in an extension direction of the drain signal lines, the strip-like portions having at least one bent portion so that extension directions of each two parts of the strip-like portions separated by the at least one bent portion are different from each other, and a second electrode formed between the first substrate and the first electrode, and being overlapped with the strip-like portions in plan view.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: November 8, 2016
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
  • Patent number: 9488880
    Abstract: Image display device having an electrode forming layer which includes a plurality of gate lines, a plurality of drain lines, a plurality of switching elements and the a plurality of pixel electrodes, and having reference electrode layer between the electrode forming layer and a substrate where the electrode forming layer formed thereon, and the reference electrode layer and the electrode forming layer are insulated by insulating layer.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: November 8, 2016
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yoshiaki Nakayoshi, Kazuhiko Yanagawa
  • Publication number: 20160238910
    Abstract: A liquid crystal display includes a first substrate and a second substrate opposed to each other with a liquid crystal layer between the first substrate and the second substrate. The first substrate has a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel regions are defined by the drain signal lines and the gate signal lines. Each of the pixel regions includes a first electrode having a plurality of strip-like portions extending in an extension direction of the drain signal lines, the strip-like portions having at least one bent portion so that extension directions of each two parts of the strip-like portions separated by the at least one bent portion are different from each other, and a second electrode formed between the first substrate and the first electrode, and being overlapped with the strip-like portions in plan view.
    Type: Application
    Filed: April 25, 2016
    Publication date: August 18, 2016
    Inventors: Kikuo ONO, Makoto YONEYA, Tsunenori YAMAMOTO, Junichi HIRAKATA, Yoshiaki NAKAYOSHI
  • Publication number: 20160238909
    Abstract: A liquid crystal display includes a first substrate and a second substrate opposed to each other with a liquid crystal layer between the first substrate and the second substrate. The first substrate has a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel regions are defined by the drain signal lines and the gate signal lines. Each of the pixel regions includes a first electrode having a plurality of strip-like portions extending in an extension direction of the drain signal lines, the strip-like portions having at least one bent portion so that extension directions of each two parts of the strip-like portions separated by the at least one bent portion are different from each other, and a second electrode formed between the first substrate and the first electrode, and being overlapped with the strip-like portions in plan view.
    Type: Application
    Filed: April 25, 2016
    Publication date: August 18, 2016
    Inventors: Kikuo ONO, Makoto YONEYA, Tsunenori YAMAMOTO, Junichi HIRAKATA, Yoshiaki NAKAYOSHI