Patents by Inventor Toshiharu Matsushima

Toshiharu Matsushima 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: 20220269128
    Abstract: According to one embodiment, a display device including a display panel, a viewing angle control panel and a polarizing axis rotation element, wherein the display panel includes a first liquid crystal layer which modulates a first polarization component, the viewing angle control panel includes a second liquid crystal layer containing twist-aligned liquid crystal molecules, a second polarizing axis of a second polarization component transmitted through the viewing angle control panel is different from a first polarizing axis of the first polarization component, and the polarizing axis rotates element rotating the second polarizing axis such that the second polarizing axis is aligned with the first polarizing axis.
    Type: Application
    Filed: May 10, 2022
    Publication date: August 25, 2022
    Inventor: Toshiharu MATSUSHIMA
  • Publication number: 20220252944
    Abstract: According to one embodiment, a display device includes a first substrate with a first alignment film, a second substrate with a second alignment film, and a liquid crystal layer interposed therebetween. The first substrate has first and second electrodes. An initial alignment direction of liquid crystal molecules of the liquid crystal layer is parallel to a first direction or a direction orthogonal to the first direction. The second electrode includes comblike electrodes extending parallel to the first direction and a connecting portion which connects the comblike electrodes. The connecting portion includes a projection which projects in a second direction more than an outermost comblike electrode.
    Type: Application
    Filed: April 25, 2022
    Publication date: August 11, 2022
    Applicant: Japan Display Inc.
    Inventor: Toshiharu MATSUSHIMA
  • Publication number: 20220221763
    Abstract: The purpose of the present invention is to realize a high contrast display with liquid crystal display device using a liquid crystal light valve. A representative structure is as follows. A liquid crystal display device includes a liquid crystal display panel, a backlight, and a liquid crystal light valve; the light valve includes a plurality of first electrodes extending in a first direction and formed on the first substrate; a first insulating film is formed on the first electrode; a plurality of second electrodes are formed in a matrix at predetermined intervals on the first insulating film; a second insulating film is formed on the second electrodes; a plurality of third electrodes extending in a second direction are formed on the second insulating film; the liquid crystal is sandwiched between the third electrodes and the second substrate; the predetermined interval between the second electrodes is 2 to 10 ?m.
    Type: Application
    Filed: March 30, 2022
    Publication date: July 14, 2022
    Inventors: Shunichi KIMURA, Toshiharu MATSUSHIMA, Shinichi KOMURA
  • Publication number: 20220214583
    Abstract: A liquid crystal display is provided and includes first substrate; data and gate lines on first substrate; first electrode arranged over data and gate lines; insulating layer on first electrode; second electrode on insulating layer including connection electrode, wherein projection electrodes connected to connection electrode; second substrate; black matrix on second substrate including first black matrix with a constant width, a second black matrix; and liquid crystal layer sandwiched between first and second substrates, wherein width of first black matrix is wider than width of second black matrix, where second black matrix overlaps connection electrode so as to dispose connection electrode inside of second black matrix in plan view.
    Type: Application
    Filed: March 28, 2022
    Publication date: July 7, 2022
    Inventor: Toshiharu MATSUSHIMA
  • Publication number: 20220214573
    Abstract: Display device is provided and includes first substrate; first and second lines; first electrode on first substrate; insulating film on first electrode; second electrode including connection electrode arranged in parallel with second lines and comb electrodes connected to the connection electrode; second substrate facing first substrate; liquid crystal layer provided between first and second substrates; and light shielding portion extending along extending direction of first lines, wherein in plain view, part of comb electrodes arranged at end of comb electrodes and part of first electrode overlaps with light shielding portion in the same area.
    Type: Application
    Filed: March 21, 2022
    Publication date: July 7, 2022
    Inventor: Toshiharu MATSUSHIMA
  • Publication number: 20220206334
    Abstract: A display panel and a backlight unit facing the display panel are provided. The display panel includes first and second polarizing plates, first and second substrates, and a liquid crystal layer. In a plan view, a second electrode formed on the first substrate extends in a first direction and includes a plurality of branch electrodes arranged in a second direction crossing the first direction. Any one of transmission axes of the first and second polarizing plates is parallel to an orientation direction of liquid crystal molecules when no voltage is applied to the second electrode. When a formation surface of the second electrode is as a base level and a normal direction of the base level is set to 0 degrees, light from the backlight unit has a peak of the intensity of light at an angle different from 0 degrees in a visible light region.
    Type: Application
    Filed: March 17, 2022
    Publication date: June 30, 2022
    Applicant: Japan Display Inc.
    Inventor: Toshiharu MATSUSHIMA
  • Publication number: 20220197096
    Abstract: According to one embodiment, A display device including a first substrate, a second substrate, and a liquid crystal layer, wherein the first substrate includes a first common electrode, a pixel electrode, a scanning line, and a signal line, the first common electrode includes a shaft portion extending in the second direction, a first branch portion extending in the first direction from the shaft portion, and a second branch portion extending in the first direction from the shaft portion, a first opening and a second opening are provided, the first branch portion overlaps the pixel electrode and the first opening, and the second branch portion overlaps the scanning line between the first opening and the second opening.
    Type: Application
    Filed: March 9, 2022
    Publication date: June 23, 2022
    Applicant: Japan Display Inc.
    Inventors: Toshiharu MATSUSHIMA, Hitoshi TANAKA
  • Patent number: 11347108
    Abstract: According to one embodiment, a display device includes a first substrate with a first alignment film, a second substrate with a second alignment film, and a liquid crystal layer interposed therebetween. The first substrate has first and second electrodes. An initial alignment direction of liquid crystal molecules of the liquid crystal layer is parallel to a first direction or a direction orthogonal to the first direction. The second electrode includes comblike electrodes extending parallel to the first direction and a connecting portion which connects the comblike electrodes. The connecting portion includes a projection which projects in a second direction more than an outermost comblike electrode.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: May 31, 2022
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Patent number: 11287699
    Abstract: A liquid crystal display is provided and includes first substrate; data and gate lines on first substrate; thin film transistor connected to data and gate lines; common electrode arranged over data and gate lines; insulating layer on common electrode; pixel electrode on insulating layer including connection pixel electrode, wide projection pixel electrode connected to connection pixel electrode, and projection pixel electrodes connected to connection pixel electrode; second substrate facing first substrate; black matrix on second substrate including first and second black matrix; and liquid crystal layer sandwiches between first and second substrates, wherein first black matrix overlaps wide projection pixel electrode, and second black matrix overlaps connection pixel electrode, and length of the connection pixel electrode is longer than length of the wide projection pixel electrode and length of projection pixel electrodes.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: March 29, 2022
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Publication number: 20220091464
    Abstract: According to one embodiment, a display device includes a first substrate including a common electrode and a pixel electrode, a second substrate, a liquid crystal layer, a first alignment film and a second alignment film. The pixel electrode includes a plurality of branch portions extending in a first direction and a connection portion extending in a second direction, wherein the first alignment film and the second alignment film are photo-alignment films, and the first alignment film has an anchoring strength of 1*10?3J/m2 or less.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 24, 2022
    Applicant: Japan Display Inc.
    Inventors: Shunichi KIMURA, Toshiharu MATSUSHIMA
  • Patent number: 11281040
    Abstract: A display device is provided and includes first substrate; gate lines extending on first substrate; data lines extending in a direction crossing gate lines; first electrode on first substrate; insulating film on first electrode; second electrode on insulating film, facing first electrode and including connection electrode arranged in parallel with data lines and comb electrodes arranged in parallel with gate lines and slits arranged between comb electrodes; second substrate facing first substrate; liquid crystal layer provided between first and second substrates; and light shielding portion extending along extending direction of gate lines, wherein comb electrodes connected to connection electrode, length of each of slits in extending direction is longer than width of slits in direction orthogonal to extending direction, and in plan view, one of comb electrodes overlaps with light shielding portion.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: March 22, 2022
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Publication number: 20220082877
    Abstract: Provided is a display device including an array substrate, a pixel, a dimming element, and a counter substrate. The pixel is located over the array substrate and includes a first electrode, a second electrode, and a liquid crystal layer over the first electrode and the second electrode. The dimming element is located over the array substrate and includes a third electrode, the liquid crystal layer over the third electrode, and a fourth electrode over the liquid crystal layer. The counter substrate is located over the fourth electrode.
    Type: Application
    Filed: November 29, 2021
    Publication date: March 17, 2022
    Inventors: Shigesumi ARAKI, Toshiharu MATSUSHIMA, Shinichi KOMURA
  • Publication number: 20220050339
    Abstract: According to an aspect, a liquid-crystal display device includes a first substrate, a second substrate, and a liquid-crystal layer. The first substrate includes a first electrode and a second electrode, and one of the first electrode and the second electrode is a pixel electrode provide, the first electrode includes an electrode base portion extending in a first direction and comb tooth portions extending in a second direction and protruding in a comb teeth shape from the electrode base portion with a predetermined distance interposed therebetween, and adjacent comb tooth portions include adjacent comb tooth portions having a relation in which a first long side of one comb tooth portion closest to a boundary between pixels is not parallel to a first long side of the other comb tooth portion.
    Type: Application
    Filed: November 1, 2021
    Publication date: February 17, 2022
    Inventor: Toshiharu MATSUSHIMA
  • Patent number: 11221527
    Abstract: A viewing angle of emission light is widened. A width of the viewing angle is adjusted. A liquid crystal diffraction grating includes at least a first substrate, a liquid crystal layer and a second substrate. The first substrate includes a lower electrode and an upper electrode opposite to the lower electrode, and the upper electrode includes a plurality of branch electrodes that extend in a Y direction and are arranged in an X direction in a plan view. When no voltage is applied to the plurality of branch electrodes, an alignment direction of liquid crystal molecules of the liquid crystal layer is a direction along the X or Y direction. When polarizers are arranged on upper and lower sides of the liquid crystal diffraction grating, transmission axes of these polarizers are parallel to each other and parallel to the alignment direction of the liquid crystal molecules.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: January 11, 2022
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Patent number: 11221521
    Abstract: Provided is a display device including an array substrate, a pixel, a dimming element, and a counter substrate. The pixel is located over the array substrate and includes a first electrode, a second electrode, and a liquid crystal layer over the first electrode and the second electrode. The dimming element is located over the array substrate and includes a third electrode, the liquid crystal layer over the third electrode, and a fourth electrode over the liquid crystal layer. The counter substrate is located over the fourth electrode.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: January 11, 2022
    Assignee: Japan Display Inc.
    Inventors: Shigesumi Araki, Toshiharu Matsushima, Shinichi Komura
  • Patent number: 11215882
    Abstract: A display device includes an electrode layer and a liquid crystal layer. The electrode layer has a first electrode and a second electrode. The second electrode is opposed to the first electrode and having a plurality of openings extending in a same extending direction. The liquid crystal layer is disposed on the electrode layer. The liquid crystal molecules of the liquid crystal layer in a region in proximity to one side of the opening and liquid crystal molecules of the liquid crystal layer in a region in proximity to another side of the opening, the sides of the opening being opposed to each other in a width direction of the opening, are rotated in opposite directions from each other and aligned.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: January 4, 2022
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Patent number: 11163199
    Abstract: According to an aspect, a liquid-crystal display device includes a first substrate, a second substrate, and a liquid-crystal layer. The first substrate includes a first electrode and a second electrode, and one of the first electrode and the second electrode is a pixel electrode provide, the first electrode includes an electrode base portion extending in a first direction and comb tooth portions extending in a second direction and protruding in a comb teeth shape from the electrode base portion with a predetermined distance interposed therebetween, and adjacent comb tooth portions include adjacent comb tooth portions having a relation in which a first long side of one comb tooth portion closest to a boundary between pixels is not parallel to a first long side of the other comb tooth portion.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: November 2, 2021
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Publication number: 20210333580
    Abstract: According to one embodiment, a display system includes an external light sensor, a display panel, a viewing angle control panel including a liquid crystal layer containing liquid crystal molecules twist-aligned, configured such that a drive voltage applied to the liquid crystal layer is controlled based on an external light intensity detected by the external light sensor, and a polarization axis rotation element disposed between the viewing angle control panel and the display panel. The drive voltage when the external light intensity is less than a threshold value is greater than the drive voltage when the external light intensity is greater or equal to than the threshold value.
    Type: Application
    Filed: April 27, 2021
    Publication date: October 28, 2021
    Applicant: Japan Display Inc.
    Inventor: Toshiharu MATSUSHIMA
  • Publication number: 20210109410
    Abstract: A display device includes an electrode layer and a liquid crystal layer. The electrode layer has a first electrode and a second electrode. The second electrode is opposed to the first electrode and having a plurality of openings extending in a same extending direction. The liquid crystal layer is disposed on the electrode layer. The liquid crystal molecules of the liquid crystal layer in a region in proximity to one side of the opening and liquid crystal molecules of the liquid crystal layer in a region in proximity to another side of the opening, the sides of the opening being opposed to each other in a width direction of the opening, are rotated in opposite directions from each other and aligned.
    Type: Application
    Filed: December 22, 2020
    Publication date: April 15, 2021
    Inventor: Toshiharu MATSUSHIMA
  • Publication number: 20210109408
    Abstract: According to one embodiment, a display device includes a first substrate with a first alignment film, a second substrate with a second alignment film, and a liquid crystal layer interposed therebetween. The first substrate has first and second electrodes. An initial alignment direction of liquid crystal molecules of the liquid crystal layer is parallel to a first direction or a direction orthogonal to the first direction. The second electrode includes comblike electrodes extending parallel to the first direction and a connecting portion which connects the comblike electrodes. The connecting portion includes a projection which projects in a second direction more than an outermost comblike electrode.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Applicant: Japan Display Inc.
    Inventor: Toshiharu MATSUSHIMA