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).

  • Publication number: 20170003528
    Abstract: According to one embodiment, a liquid crystal display device includes a display device with a first main surface and a second main surface which is opposite to the first main surface, a first member disposed in the first main surface side of the display panel, a second member disposed between the first member and the display panel, and a cover member disposed in the second main surface side of the display panel, and having a rigidity greater than that of the display panel. The coefficient of thermal expansion of the second member is greater than that of the first member.
    Type: Application
    Filed: June 13, 2016
    Publication date: January 5, 2017
    Applicant: Japan Display Inc.
    Inventors: Emi HIGANO, Toshiyuki HIGANO, Shigesumi ARAKI
  • Publication number: 20160363822
    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: Application
    Filed: May 18, 2016
    Publication date: December 15, 2016
    Applicant: Japan Display Inc.
    Inventors: Genki ASOZU, Shigesumi ARAKI
  • Publication number: 20160274403
    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: Application
    Filed: March 15, 2016
    Publication date: September 22, 2016
    Inventors: Shigesumi ARAKI, Toshiyuki HIGANO, Emi HIGANO
  • Publication number: 20160259476
    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: May 12, 2016
    Publication date: September 8, 2016
    Inventors: Shigesumi ARAKI, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
  • Publication number: 20160231616
    Abstract: A display device is provided that inhibits color mixture between adjacent subpixels and allows for obtaining a high-quality image. The display device includes a display area on which a light-blocking metal layer, a black matrix, and a plurality of subpixels are arranged, wherein the plurality of subpixels are arranged adjacent to one another via a black matrix as seen vertically from above, the black matrix and the light-blocking metal layer are arranged to overlap each other as seen vertically from above, and the light-blocking metal layer 130 is arranged on the bank of an organic flattened film.
    Type: Application
    Filed: April 14, 2016
    Publication date: August 11, 2016
    Inventors: Noriyoshi KANDA, Shigesumi ARAKI, Mitsutaka OKITA, Hirohisa MIKI
  • Publication number: 20160223863
    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: Application
    Filed: January 11, 2016
    Publication date: August 4, 2016
    Applicant: Japan Display Inc.
    Inventors: Tatsuro MIZUNUMA, Shigesumi ARAKI, Hirohisa MIKI
  • Publication number: 20160223870
    Abstract: According to one embodiment, a display device includes an insulating substrate, a wavelength conversion element, a light propagation layer including a light-path portion formed between the insulating substrate and the wavelength conversion element, wherein an area of a surface on the insulating substrate side is greater than an area of a surface on the wavelength conversion element side, and a non-light-path portion formed of a material having a refractive index less than the light-path portion, the light-path portion being sandwiched between the non-light-path portions, and a reflective film formed between the non-light-path portion and the wavelength conversion element.
    Type: Application
    Filed: February 1, 2016
    Publication date: August 4, 2016
    Applicant: Japan Display Inc.
    Inventors: Hirohisa MIKI, Shigesumi ARAKI
  • Publication number: 20160225331
    Abstract: A display device includes: a first scanning line and a second scanning line which are provided along a first direction; a first signal line and a second signal line which are provided along a second direction; and a first subpixel and a second subpixel. Each of the first subpixel and the second subpixel is disposed between the first scanning line and the second scanning line and between the first signal line and the second signal line, and is provided with an electrode having a first main electrode portion and a first electrode portion connected with a first end of the first main electrode portion. The first electrode portion of the first subpixel and the first electrode portion of the second subpixel are provided at an interval along a direction free from being parallel to each of the first direction and the second direction.
    Type: Application
    Filed: January 12, 2016
    Publication date: August 4, 2016
    Applicant: Japan Display Inc.
    Inventors: Emi HIGANO, Toshiyuki HIGANO, Shigesumi ARAKI
  • Patent number: 9400409
    Abstract: According to one embodiment, a display includes a first substrate including a scan line, a signal line, a pixel electrode including first electrodes extending substantially parallel to the signal line, a common electrode including second electrodes extending parallel to the first electrode between the first electrodes and arranged with a predetermined space between each second electrode and the adjacent first electrode, and a shielding portion at least arranged between the signal line and the first electrode arranged near the signal line, a second substrate including a light shielding layer having a width identical to a width of the shielding portion and arranged opposite the signal line, in a direction substantially orthogonal to the signal line, and a liquid crystal layer.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: July 26, 2016
    Assignee: Japan Display Inc.
    Inventors: Shigesumi Araki, Norihisa Maeda, Tatsuya Wakimoto, Kazuhiro Nishiyama
  • Publication number: 20160209706
    Abstract: There is provided a display device that can improve the use efficiency of light from a light source and achieve low power consumption with a simple configuration even in the case in which no color filter is used. A display device includes a substrate having a display region and a TFT disposed on the display region, wavelength conversion layers each including a columnar quantum rod and disposed on a region corresponding to the display region, and a light source that excites the quantum rods.
    Type: Application
    Filed: December 31, 2015
    Publication date: July 21, 2016
    Inventors: Hirohisa Miki, Shigesumi Araki, Kazuhiro Nishiyama
  • Patent number: 9367165
    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: October 7, 2014
    Date of Patent: June 14, 2016
    Assignee: Japan Display Inc.
    Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
  • Patent number: 9341901
    Abstract: A display device is provided that inhibits color mixture between adjacent subpixels and allows for obtaining a high-quality image. The display device includes a display area on which a light-blocking metal layer, a black matrix, and a plurality of subpixels are arranged, wherein the plurality of subpixels are arranged adjacent to one another via a black matrix as seen vertically from above, the black matrix and the light-blocking metal layer are arranged to overlap each other as seen vertically from above, and the light-blocking metal layer 130 is arranged on the bank of an organic flattened film.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: May 17, 2016
    Assignee: Japan Display Inc.
    Inventors: Noriyoshi Kanda, Shigesumi Araki, Mitsutaka Okita, Hirohisa Miki
  • Publication number: 20160091757
    Abstract: The display device includes: an array substrate having an in-cell polarizing layer and a color layer; a counter substrate; a liquid crystal layer; a white light source; and a polarizing plate placed on the counter substrate on its one side opposite to a side on which the liquid crystal layer is provided. The color layer includes a red color layer, a green color layer and a blue color layer. The red color layer includes a red color filter and a red wavelength conversion layer which is located on its one side closer to the white light source than the red color filter. The green color layer includes a green color filter and a green wavelength conversion layer which is located on its one side closer to the white light source than the green color filter. The blue color layer includes a blue color filter.
    Type: Application
    Filed: September 25, 2015
    Publication date: March 31, 2016
    Inventors: Hirohisa MIKI, Shigesumi ARAKI
  • Publication number: 20160018708
    Abstract: A display device is provided that inhibits color mixture between adjacent subpixels and allows for obtaining a high-quality image. The display device includes a display area on which a light-blocking metal layer, a black matrix, and a plurality of subpixels are arranged, wherein the plurality of subpixels are arranged adjacent to one another via a black matrix as seen vertically from above, the black matrix and the light-blocking metal layer are arranged to overlap each other as seen vertically from above, and the light-blocking metal layer 130 is arranged on the bank of an organic flattened film.
    Type: Application
    Filed: July 16, 2015
    Publication date: January 21, 2016
    Inventors: Noriyoshi KANDA, Shigesumi ARAKI, Mitsutaka OKITA, Hirohisa MIKI
  • Publication number: 20150331278
    Abstract: Phosphors or quantum dots cannot convert all the excitation lights, but the remaining excitation lights have to be absorbed with a color filter without passing through. A display device includes an array substrate having a color layer and an opposite substrate. The color layer includes a red fluorescence layer for converting blue light into red, a green fluorescence layer for converting blue light into green, and a blue fluorescence layer for compensating blue light. Both of the red fluorescence layer and the green fluorescence layer include the phosphors or quantum dots with two types of dominant wavelengths. The blue fluorescence layer includes the phosphors or quantum dots with one type of dominant wavelength.
    Type: Application
    Filed: May 11, 2015
    Publication date: November 19, 2015
    Inventors: Shigesumi ARAKI, Kazuhiro NISHIYAMA
  • Publication number: 20150261046
    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: Application
    Filed: March 11, 2015
    Publication date: September 17, 2015
    Applicant: Japan Display Inc.
    Inventors: Hirohisa MIKI, Shigesumi ARAKI
  • Publication number: 20150205148
    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: January 14, 2015
    Publication date: July 23, 2015
    Inventors: Youichi ASAKWA, Shigesumi ARAKI
  • Publication number: 20150097192
    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: October 7, 2014
    Publication date: April 9, 2015
    Inventors: Shigesumi ARAKI, Mitsutaka OKITA, Kazuhiro NISHIYAMA, Yoshitoshi KIDA, Koji ISHIZAKI, Kohei AZUMI, Hiroshi MIZUHASHI
  • Patent number: 8711293
    Abstract: In one embodiment, a pair of liquid crystal shutter glasses include a first liquid crystal shutter and a second liquid crystal shutter. The first and second liquid crystal shutters are switched to a transmissive state by turns. The respective first and second liquid crystal shutters include a first electrode substrate and a second electrode substrate opposing the first electrode substrate. An OCB (Optically Compensated Bend) mode liquid crystal layer is held between the first and second electrode substrates. The first electrode substrate includes a first electrode and a second electrode arranged adjacent to the first electrode. The first and second electrodes respectively include a side opposing each other and a plurality of projecting portions provided to the respective opposing sides of the first and second electrodes alternately.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: April 29, 2014
    Assignee: Japan Display Inc.
    Inventors: Tetsuo Fukami, Shigesumi Araki, Tetsuya Kojima, Toshiyuki Higano, Kenji Nakao
  • Patent number: 8686989
    Abstract: In one embodiment, the liquid crystal shutter is equipped with a first liquid crystal panel in the OCB mode to control the transmissivity of the light entering into left eye and a second liquid crystal panel in the OCB mode to control the transmissivity of the light entering into right eye, and a drive portion to control the transmissivity. The drive portion applies a normal voltage of a normal drive in a pulse shape and a retention voltage having a pulse shape with lower frequency than the normal voltage or lower voltage than normal voltage to the first liquid crystal panel and the second liquid crystal panel. The drive portion switches between the normal drive and the retention drive while maintaining bend alignment state.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: April 1, 2014
    Assignee: Japan Display Central Inc.
    Inventors: Hirohisa Miki, Shigesumi Araki, Kazuhiro Nishiyama, Tetsuya Kojima, Kenji Nakao