Patents by Inventor Shigesumi Araki

Shigesumi Araki 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: 10012858
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a first sub-pixel, a second sub-pixel, a first line and a second line extending between the first sub-pixel and the second sub-pixel with a gap therebetween, and a first alignment film as an outermost layer. The second substrate includes a second alignment film opposed to the first alignment film. Further, the first substrate includes a groove in which the first alignment has a recessed surface between the first line and the second line, and the groove is filled with the liquid crystal layer.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: July 3, 2018
    Assignee: Japan Display Inc.
    Inventors: Genki Asozu, Shigesumi Araki
  • Publication number: 20180149938
    Abstract: The structure of the invention is: a pair of a first scanning line and a second scanning line extend in a first direction on the TFT substrate, a first pixel that has a first pixel electrode and a second pixel that as a second pixel electrode are formed between the pairs of the scanning lines, a connection area is formed between the first scanning line and the second scanning line; a first TFT, a first through hole that connects the first TFT with the first pixel electrode, and a second TFT, a second through hole that connects the second TFT with the second pixel electrode are formed in the connection area; the first pixel electrode and the second pixel electrode are formed on an organic passivation film; the organic passivation film is not formed in an area where the first through hole and the second through hole are formed.
    Type: Application
    Filed: October 25, 2017
    Publication date: May 31, 2018
    Inventors: Genki ASOZU, Shigesumi ARAKI
  • Patent number: 9983439
    Abstract: According to one embodiment, a wavelength converter includes a microlens which condenses excitation light, a reflective layer which is opposed to the microlens and includes an aperture, and a wavelength conversion element which is opposed to the microlens via the reflective layer, absorbs the excitation light, and emits emission light whose wavelength is different from that of the excitation light.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: May 29, 2018
    Assignee: Japan Display Inc.
    Inventors: Tatsuro Mizunuma, Shigesumi Araki, Hirohisa Miki
  • Publication number: 20180095593
    Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.
    Type: Application
    Filed: December 5, 2017
    Publication date: April 5, 2018
    Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
  • Patent number: 9870092
    Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: January 16, 2018
    Assignee: Japan Display Inc.
    Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
  • Patent number: 9857638
    Abstract: A display device includes a scanning line extending in a first direction and a scanning line extending in a second direction. The signal line extends in a zigzag manner in the second direction by running tilted at a first predetermined angle with respect to the second direction for every plurality of pixels and running tilted at a second predetermined angle with respect to the second direction for every plurality of pixels.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: January 2, 2018
    Assignee: Japan Display Inc.
    Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama
  • Patent number: 9829753
    Abstract: A display device includes a first light shielding area where two signal lines are arranged between the opening portions of mutually adjacent sub pixels, a second light shielding area where one signal line is arranged between the opening portions of mutually adjacent sub pixels, and a third light shielding area where one scanning line is arranged between the opening portions of mutually adjacent sub pixels. The display device further includes a first spacer arranged in the first light shielding area or the second light shielding area along the extending direction of the signal line and a second spacer arranged in the third light shielding area along the extending direction of the scanning line. The first spacer and the second spacer are arranged crosswise.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: November 28, 2017
    Assignee: Japan Display Inc.
    Inventors: Shigesumi Araki, Toshiyuki Higano, Emi Higano
  • Patent number: 9810946
    Abstract: According to one embodiment, a display device includes a first insulating substrate, a second insulating substrate, a first pixel electrode and a second pixel electrode, a wavelength conversion element to convert light of a first wavelength polarized in a first polarization direction into light of a second wavelength polarized in a second polarization direction, and a liquid crystal layer having a first thickness in an area opposed to the first pixel electrode, and having a second thickness greater than the first thickness in an area opposed to the second pixel electrode.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: November 7, 2017
    Assignee: Japan Display Inc.
    Inventors: Tatsuro Mizunuma, Shigesumi Araki, Hirohisa Miki
  • Patent number: 9810828
    Abstract: A liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide plate, an LED, and a wavelength converter between the light guide plate and the LED. The wavelength converter includes semiconductor quantum dots in a supporter, to which a reflection film is applied except surfaces that face the LED and the light guide plate.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: November 7, 2017
    Assignee: Japan Display Inc.
    Inventors: Hirohisa Miki, Shigesumi Araki
  • Patent number: 9784900
    Abstract: According to one embodiment, an illumination device including a light source unit including a light-emitting element having a light-emitting surface, a reflective surface formed around the light-emitting surface and having higher optical reflectivity than the light-emitting surface, a wavelength conversion member which converts a wavelength of emitted light from the light-emitting surface, an optical member located between the light source unit and the wavelength conversion member and including a light path adjustment mechanism which guides, to the reflective surface, light returned from the wavelength conversion member to the light-emitting surface, and a lightguide opposed to the wavelength conversion member.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: October 10, 2017
    Assignee: Japan Display Inc.
    Inventors: Hirohisa Miki, Shigesumi Araki
  • Publication number: 20170212394
    Abstract: According to one embodiment, a liquid crystal display comprises first and second substrates and a liquid crystal layer. The first substrate comprises pixel electrodes and a common electrode in a display area. The display area includes a first display area and a second display area which is closer to an edge of the display area than the first display area. The pixel electrodes include first and second pixel electrodes, the first pixel electrode being located in a pixel in the first display area, the second pixel electrode being located in a pixel in the second display area. A second area by which the second pixel electrode and the common electrode face each other is greater than a first area by which the first pixel electrode and the common electrode face each other.
    Type: Application
    Filed: January 25, 2017
    Publication date: July 27, 2017
    Applicant: Japan Display Inc.
    Inventor: Shigesumi ARAKI
  • Patent number: 9709862
    Abstract: A liquid crystal display device includes a liquid crystal between a TFT substrate including pixels formed in a matrix, and a counter substrate. A pixel electrode is formed in an area surrounded by scanning lines and video signal lines. A common electrode is formed in a lower layer of the pixel electrode through an interlayer insulating film. A long side of the pixel electrode of a first pixel is inclined at a first angle clockwise at a right angle to the extending direction of the scanning line. A long side of the pixel electrode of a second pixel is inclined at the first angle counterclockwise at a right angle to the extending direction of the scanning line. The liquid crystal is a negative type liquid crystal. Further, a protrusion formed in the long side of the pixel electrode has a side parallel to the extending direction of the scanning line.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: July 18, 2017
    Assignee: Japan Display Inc.
    Inventors: Youichi Asakawa, Shigesumi Araki
  • Publication number: 20170184921
    Abstract: A liquid crystal display device includes a liquid crystal between a TFT substrate including pixels formed in a matrix, and a counter substrate. A pixel electrode is formed in an area surrounded by scanning lines and video signal lines. A common electrode is formed in a lower layer of the pixel electrode through an interlayer insulating film. A long side of the pixel electrode of a first pixel is inclined at a first angle clockwise at a right angle to the extending direction of the scanning line. A long side of the pixel electrode of a second pixel is inclined at the first angle counterclockwise at a right angle to the extending direction of the scanning line. The liquid crystal is a negative type liquid crystal. Further, a protrusion formed in the long side of the pixel electrode has a side parallel to the extending direction of the scanning line.
    Type: Application
    Filed: March 10, 2017
    Publication date: June 29, 2017
    Inventors: Youichi ASAKAWA, Shigesumi ARAKI
  • Patent number: 9664959
    Abstract: In the case of a pixel including four and more sub pixels, the area of one pixel is larger than that in the case of a pixel including three sub pixels; therefore, high definition becomes difficult. When a central display area has a structure of four and more sub pixels, in a display device, the pixel structure in a peripheral display area for use in creating a virtual image is reduced to three sub pixels, to allocate the vacant space for high density assignment. Only the pixel density in the vicinity of a frame of a lens portion is compressed, in order to apparently resolve the discord with the image of a non-lens portion. The pixel side in the peripheral display area may be even or gradually narrowed.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: May 30, 2017
    Assignee: Japan Display Inc.
    Inventors: Hirohisa Miki, Shigesumi Araki
  • Publication number: 20170146719
    Abstract: A liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide plate, an LED, and a wavelength converter between the light guide plate and the LED. The wavelength converter includes semiconductor quantum dots in a supporter, to which a reflection film is applied except surfaces that face the LED and the light guide plate.
    Type: Application
    Filed: September 27, 2016
    Publication date: May 25, 2017
    Inventors: Hirohisa MIKI, Shigesumi ARAKI
  • Publication number: 20170139291
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a drive circuit, a second substrate, a sealing member, and a liquid crystal layer. The first substrate includes a first trap electrode provided in a non-display area, and a first shield electrode provided in the non-display area, located closer to a display area than the first trap electrode, and located above a scanning line. The drive circuit causes a potential of the first trap electrode to differ from a potential of the first shield electrode. The sealing member located opposite to at least part of the first trap electrode.
    Type: Application
    Filed: November 11, 2016
    Publication date: May 18, 2017
    Applicant: Japan Display Inc.
    Inventors: Genki ASOZU, Shigesumi ARAKI
  • Patent number: 9632621
    Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: April 25, 2017
    Assignee: Japan Display Inc.
    Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
  • Publication number: 20170102600
    Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.
    Type: Application
    Filed: December 21, 2016
    Publication date: April 13, 2017
    Inventors: Shigesumi ARAKI, Mitsutaka OKITA, Kazuhiro NISHIYAMA, Yoshitoshi KIDA, Koji ISHIZAKI, Kohei AZUMI, Hiroshi MIZUHASHI
  • Publication number: 20170023721
    Abstract: According to one embodiment, an illumination device including a light source unit including a light-emitting element having a light-emitting surface, a reflective surface formed around the light-emitting surface and having higher optical reflectivity than the light-emitting surface, a wavelength conversion member which converts a wavelength of emitted light from the light-emitting surface, an optical member located between the light source unit and the wavelength conversion member and including a light path adjustment mechanism which guides, to the reflective surface, light returned from the wavelength conversion member to the light-emitting surface, and a lightguide opposed to the wavelength conversion member.
    Type: Application
    Filed: July 22, 2016
    Publication date: January 26, 2017
    Applicant: Japan Display Inc.
    Inventors: Hirohisa MIKI, Shigesumi ARAKI
  • Publication number: 20170003548
    Abstract: According to one embodiment, a wavelength converter includes a microlens which condenses excitation light, a reflective layer which is opposed to the microlens and includes an aperture, and a wavelength conversion element which is opposed to the microlens via the reflective layer, absorbs the excitation light, and emits emission light whose wavelength is different from that of the excitation light.
    Type: Application
    Filed: June 17, 2016
    Publication date: January 5, 2017
    Applicant: Japan Display Inc.
    Inventors: Tatsuro MIZUNUMA, Shigesumi ARAKI, Hirohisa MIKI