Patents by Inventor Kentaro Okuyama

Kentaro Okuyama 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: 20230274711
    Abstract: According to one embodiment, an electronic device includes a display panel configured to display an image and including a display region that transmits external light, a light source unit, a camera opposed to the display region of the display panel, and a control unit. The control unit is configured to in a light emission period, permit irradiation of light by the light source unit, irradiate the display region with light, display the image in the display region, and prohibit capturing by the camera. The control unit is configured to in a capturing period, prohibit the irradiation of the light by the light source unit, set the display region to be transparent, permit the capturing by the camera, and take in the external light transmitted through the display region to the camera.
    Type: Application
    Filed: February 23, 2023
    Publication date: August 31, 2023
    Applicant: Japan Display Inc.
    Inventors: Kentaro OKUYAMA, Kazuhiko SAKO, Tsutomu HARADA, Takayuki NAKANISHI, Kazunari TOMIZAWA
  • Patent number: 11740510
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a liquid crystal layer, a first light guide element and a light-emitting element. The liquid crystal layer contains stringy polymers and liquid crystal molecules. The first light guide element includes a third transparent substrate including a side surface and a main surface, and a transparent layer disposed on the main surface and having a refractive index lower than that of the third transparent substrate. The light-emitting element opposes the side surface, and the third transparent substrate is adhered to the second transparent substrate while interposing the transparent layer therebetween. The light-emitting element is disposed on the second transparent substrate.
    Type: Grant
    Filed: February 21, 2022
    Date of Patent: August 29, 2023
    Assignee: Japan Display Inc.
    Inventors: Kojiro Ikeda, Tenfu Nakamura, Kentaro Okuyama, Zhengyi Gou, Hisanori Kawakami
  • Patent number: 11719877
    Abstract: According to one embodiment, a display device includes a first transparent substrate including a first main surface, a second transparent substrate including a first end portion, a liquid crystal layer containing strip-shaped polymers and liquid crystal molecules, a third transparent substrate including a second end portion and a second main surface, a first light-emitting element and a first light guide. The first light guide includes a first surface and a second surface. A height from the first main surface to the second surface is less than a height from the first main surface to the second main surface.
    Type: Grant
    Filed: August 10, 2022
    Date of Patent: August 8, 2023
    Assignee: Japan Display Inc.
    Inventors: Yudai Numata, Kentaro Okuyama
  • Patent number: 11709387
    Abstract: According to one embodiment, a display device includes a first display panel, and a polarizer opposed to the first display panel and having a transmission axis for transmitting linearly polarized light. The first display panel includes a first substrate, a second substrate opposed to the first substrate, and a first liquid crystal layer held between the first substrate and the second substrate and including streak-like polymers and liquid crystal molecules. An extension direction of the polymers is substantially orthogonal to the transmission axis.
    Type: Grant
    Filed: April 14, 2022
    Date of Patent: July 25, 2023
    Assignee: Japan Display Inc.
    Inventor: Kentaro Okuyama
  • Patent number: 11703735
    Abstract: According to one embodiment, a display device includes a light-emitting element, a first substrate including a first transparent substrate, a first pixel electrode, and a second pixel electrode, a second substrate including a second transparent substrate including a side surface opposing the light-emitting element and a common electrode overlapping the first pixel electrode and the second pixel electrode and a liquid crystal layer provided between the first substrate and the second substrate and containing a polymer and liquid crystal molecules, and the first pixel electrode is provided between the light-emitting element and the second pixel electrode, and an electrode area of the first pixel electrode is smaller than that of the second pixel electrode.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: July 18, 2023
    Assignee: Japan Display Inc.
    Inventor: Kentaro Okuyama
  • Publication number: 20230221595
    Abstract: According to one embodiment, a display device includes a first substrate including a light-shielding layer and a conductive line having a first side surface and a second side surface on a side opposite to the first side surface, a second substrate opposed to the first substrate, a polymer dispersed liquid crystal layer held between the first substrate and the second substrate, and including a polymer and liquid crystal molecules, and a light-emitting element opposed to an end portion of at least one of the first substrate and the second substrate, wherein the first side surface is closer to the light-emitting element than the second side surface, and the light-shielding layer covers at least the first side surface of the conductive line.
    Type: Application
    Filed: March 21, 2023
    Publication date: July 13, 2023
    Applicant: Japan Display Inc.
    Inventors: Tae KUROKAWA, Kentaro OKUYAMA
  • Publication number: 20230221593
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate including a first end portion and a second end portion located at a position different from the first end portion, a polymer dispersed liquid crystal layer disposed between the first substrate and the second substrate, a light source device located above the first substrate and disposed along the first end portion, and a light-shielding member disposed on at least a part of the second end portion.
    Type: Application
    Filed: March 8, 2023
    Publication date: July 13, 2023
    Applicant: Japan Display Inc.
    Inventors: Yudai NUMATA, Kentaro OKUYAMA
  • Publication number: 20230204996
    Abstract: A display device includes: an array substrate; a counter substrate; a liquid crystal layer between the array substrate and the counter substrate; and a light source. The array substrate includes: signal lines; scanning lines; a grid-shaped organic insulating layer that extends along the scanning lines and the signal lines and overlies the scanning lines and the signal lines; pixel electrodes provided in regions surrounded by the scanning lines and the signal lines; and a first orientation film that covers the pixel electrodes. A portion of each pixel electrodes overlaps a slant surface of the organic insulating layer. The counter substrate includes: a common electrode overlapping the respective pixel electrodes; a protective film that has an insulating capability and a light transmitting capability and covers a side of the common electrode facing the array substrate at least in the display region; and a second orientation film that covers the protective film.
    Type: Application
    Filed: March 3, 2023
    Publication date: June 29, 2023
    Inventors: Hiroki SUGIYAMA, Kentaro OKUYAMA, Yoshihide OHUE, Yuuji OOMORI
  • Publication number: 20230185137
    Abstract: According to one embodiment, a display device includes a first substrate including a pixel electrode, a second substrate including a common electrode, a liquid crystal layer located between the first substrate and the second substrate and containing polymer and liquid crystal molecules, and a light emitting element opposed to an end surface of the second substrate, the common electrode being separated from the pixel electrode by a first distance, at a first position, the common electrode being separated from the pixel electrode by a second distance, at a second position more separated from the light emitting element than the first position, the second distance being smaller than the first distance.
    Type: Application
    Filed: February 7, 2023
    Publication date: June 15, 2023
    Inventors: Tenfu NAKAMURA, Kojiro IKEDA, Kentaro OKUYAMA
  • Patent number: 11668867
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate opposed to the first substrate and including an end portion, a liquid crystal layer provided between the first substrate and the second substrate and including a polymer in a shape of a streak and a liquid crystal molecule, a light-emitting element having a light emitting portion opposed to the end portion, and a light guide located between the end portion and the light emitting portion.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: June 6, 2023
    Assignee: Japan Display Inc.
    Inventors: Kentaro Okuyama, Yudai Numata
  • Patent number: 11657775
    Abstract: A display device includes a first light-transmitting substrate, a second light-transmitting substrate opposed to the first light-transmitting substrate, a liquid crystal layer comprising polymer dispersed liquid crystals filled between the first light-transmitting substrate and the second light-transmitting substrate, at least one light emitter opposed to at least one of a side surface of the first light-transmitting substrate and a side surface of the second light-transmitting substrate, and a first electrode and a second electrode disposed so as to sandwich the liquid crystal layer.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: May 23, 2023
    Assignee: Japan Display Inc.
    Inventors: Kojiro Ikeda, Kentaro Okuyama, Masaaki Kabe
  • Publication number: 20230152645
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a first insulating substrate, a scanning line, a signal line, a switching, and a pixel electrode. The liquid crystal layer includes a polymer in a shape of a streak and a liquid crystal molecule. The scanning line includes a conductive layer located between the first insulating substrate and the liquid crystal layer, and a first reflective layer located between the first insulating substrate and the conductive layer and having a reflectance higher than a reflectance of the conductive layer.
    Type: Application
    Filed: January 23, 2023
    Publication date: May 18, 2023
    Applicant: Japan Display Inc.
    Inventors: Kentaro OKUYAMA, Yudai NUMATA
  • Publication number: 20230152631
    Abstract: According to an aspect, a display apparatus includes: a first light-transmissive substrate; a second light-transmissive substrate arranged to face the first light-transmissive substrate; a liquid crystal layer including polymer dispersed liquid crystals sealed between the first light-transmissive substrate and the second light-transmissive substrate; at least one light-emitting device arranged to face at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate; and at least one reflector arranged on at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate, the side surface of the first or second light-transmissive substrate being on an opposite side of the side surface of the first or second light-transmissive substrate to which the at least one light-emitting device faces, and configured to reflect light at the side surface on the opposite side.
    Type: Application
    Filed: January 17, 2023
    Publication date: May 18, 2023
    Inventors: Manabu MIZUNO, Kentaro OKUYAMA, Hiroshi INAMURA, Hiroki SUGIYAMA
  • Patent number: 11644709
    Abstract: According to one embodiment, a display device includes a first substrate including a light-shielding layer and a conductive line having a first side surface and a second side surface on a side opposite to the first side surface, a second substrate opposed to the first substrate, a polymer dispersed liquid crystal layer held between the first substrate and the second substrate, and including a polymer and liquid crystal molecules, and a light-emitting element opposed to an end portion of at least one of the first substrate and the second substrate, wherein the first side surface is closer to the light-emitting element than the second side surface, and the light-shielding layer covers at least the first side surface of the conductive line.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: May 9, 2023
    Assignee: Japan Display Inc.
    Inventors: Tae Kurokawa, Kentaro Okuyama
  • Publication number: 20230133222
    Abstract: According to one embodiment, a display device includes a first substrate having a first transparent substrate and a pixel electrode, a second substrate having a second transparent substrate, a first common electrode, a second common electrode, and an insulating film disposed between the first common electrode and the second common electrode, and a liquid crystal layer. The first common electrode is disposed between the liquid crystal layer and the insulating film, and includes a first opening and a first electrode portion. The second common electrode is disposed between the insulating film and the second transparent substrate, and includes a second electrode portion overlapping the first opening.
    Type: Application
    Filed: December 29, 2022
    Publication date: May 4, 2023
    Applicant: Japan Display Inc.
    Inventors: Kojiro IKEDA, Tenfu NAKAMURA, Kentaro OKUYAMA
  • Patent number: 11640091
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a liquid crystal layer which includes a stripe-like polymer and first liquid crystal molecules having responsiveness to an electric field, a light source and a transparent film which includes second liquid crystal molecules which are not responsive to an electric field. The second liquid crystal molecules have a large inclination angle with respect to the horizontal plane of the transparent film in a first region that is separate from the light source, and have, in a second region positioned between the light source and the first region, a smaller inclination angle than the inclination angle in the first region with respect to the horizontal plane of the transparent film.
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: May 2, 2023
    Assignee: Japan Display Inc.
    Inventors: Kojiro Ikeda, Tenfu Nakamura, Kentaro Okuyama
  • Publication number: 20230121378
    Abstract: A display device is provided and includes display panel including first substrate, lower electrode on first substrate, lower alignment layer with first alignment direction on lower electrode, second substrate, upper electrode on second substrate, upper alignment layer with first alignment direction on upper electrode, and liquid crystalline polymers with striped structure and liquid crystal molecules which are aligned in first alignment direction, and which are disposed between first and second substrates; light source unit disposed at side of display panel and configured to emit incident light which is not polarized; and light guided structure disposed between side of display panel and light source unit, wherein light source unit is disposed in parallel to first alignment direction and light which is emitted from display panel is polarized in first alignment direction.
    Type: Application
    Filed: December 19, 2022
    Publication date: April 20, 2023
    Inventors: Kentaro OKUYAMA, Akira SAKAIGAWA
  • Patent number: 11630351
    Abstract: A liquid crystal panel according to one embodiment includes a first substrate, a second substrate opposed to the first substrate, a sealing member bonding the first substrate and the second substrate, and a liquid crystal layer sealed between the first substrate and the second substrate by the sealing member. The sealing member includes a ten-hour half-life temperature of 95° C. or lower and an acrylic resin. The liquid crystal layer includes a macromolecular compound.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: April 18, 2023
    Assignee: Japan Display Inc.
    Inventors: Yasushi Iwakabe, Nobuko Fukuoka, Kentaro Okuyama
  • Patent number: 11624948
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate including a first end portion and a second end portion located at a position different from the first end portion, a polymer dispersed liquid crystal layer disposed between the first substrate and the second substrate, a light source device located above the first substrate and disposed along the first end portion, and a light-shielding member disposed on at least a part of the second end portion.
    Type: Grant
    Filed: October 6, 2021
    Date of Patent: April 11, 2023
    Assignee: Japan Display Inc.
    Inventors: Yudai Numata, Kentaro Okuyama
  • Publication number: 20230106279
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a liquid crystal layer including polymers and liquid crystal molecules, and a light-emitting element. The first substrate includes a transparent substrate, a scanning line, a signal line crossing the scanning line, a switching element electrically connected to the scanning line and the signal line, an organic insulating film overlapping the switching element, and a pixel electrode electrically connected to the switching element. A thickness of the organic insulating film located between the transparent substrate and the pixel electrode is less than a thickness of the organic insulating film overlapping the switching element.
    Type: Application
    Filed: December 12, 2022
    Publication date: April 6, 2023
    Applicant: Japan Display Inc.
    Inventors: Kentaro OKUYAMA, Yoshihide OHUE, Hiroki SUGIYAMA, Tomoyuki TADA