Patents by Inventor Naru Usukura

Naru Usukura 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: 20220171234
    Abstract: A display device includes: a color filter including a first transmissive filter, a second transmissive filter, and a third transmissive filter, the first, second and third transmissive filters being configured to transmit respective light beams having peak wavelengths different from each other; a first selective-wavelength-reflection layer adjacent to an optical-input surface of the first transmissive filter, the first selective-wavelength-reflection layer being configured to reflect light of a wavelength band that passes through the third transmissive filter; a second selective-wavelength-reflection layer adjacent to an optical-input surface of the second transmissive filter, the second selective-wavelength-reflection layer being configured to reflect light of a wavelength band that passes through the third transmissive filter, the second selective-wavelength-reflection layer being identical in composition to the first selective-wavelength-reflection layer; and a light emitter configured to emit light that t
    Type: Application
    Filed: November 22, 2021
    Publication date: June 2, 2022
    Inventor: NARU USUKURA
  • Patent number: 11073692
    Abstract: The present disclosure provides a display apparatus capable of suppressing screen-door effect without requiring alignment between an optical element and a pixel. A display apparatus (1) includes a CF substrate (13) that determines a color of a sub-pixel corresponding to a color element, for each of a plurality of pixels, and a lenticular lens (14) that widens a full width at half maximum of luminance of emitted light more than a full width at half maximum of luminance of light incident from the CF substrate, in which the lenticular lens has a periodic structure smaller than a periodicity of arrangement of sub-pixels.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: July 27, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Naru Usukura, Ryuzo YuKi
  • Publication number: 20210132374
    Abstract: A display device includes a display member, a lens, and a light intensity adjuster. The display member is configured to display an image by releasing relatively short-wavelength light and relatively long-wavelength light. The lens is configured to allow the image on the display member to be reproduced on an eye of the user and thicker in the middle thereof than at the periphery thereof. The light intensity adjuster is included in the display member. The light intensity is configured to allow short-wavelength light to be released from a middle of the display member in a larger amount than both short-wavelength light to be released from ends of the display member and long-wavelength light to be released from the middle of the display member.
    Type: Application
    Filed: July 17, 2018
    Publication date: May 6, 2021
    Inventors: NARU USUKURA, HIROMI KATOH
  • Patent number: 10895748
    Abstract: A liquid crystal display device 10 includes a liquid crystal panel 11, a backlight device 12 supplying light to the liquid crystal panel 11, LEDs 13 included in the backlight device 12, a light guide plate 15 that is an optical member and included in the backlight device 12 and disposed opposite the liquid crystal panel 11 and has a light guide plate light exit surface 15a through which light from the LEDs 13 exits toward the liquid crystal panel 11, and a light guide plate side light collecting portion 20 included in the light guide plate 15, which is the optical member, and applying an anisotropic refracting action to at least light rays exiting an edge portion of the light guide plate light exit surface 15a to be directed to a middle section of the liquid crystal panel 11.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: January 19, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Naru Usukura, Hiromi Katoh
  • Patent number: 10884540
    Abstract: A display device includes: a foldable display panel having flexibility; a touch detector disposed selectively on one panel face side of the display panel and capable of detecting a plurality of touch areas; and a determiner for detecting that the display panel is folded only if the touch areas detected by the touch detector are three or more in number, and a largest first touch area thereof is located between the touch areas other than the first touch area.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: January 5, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tetsuo Murata, Tomohiro Kimura, Naru Usukura
  • Patent number: 10768430
    Abstract: A display device includes a display panel having a display surface and a lighting device that supplies light to the display panel. The lighting device includes a light source, and an optical member having at least a light exit surface through which the light emitted by the light source exits toward the display surface of the display panel. The optical member includes a light refraction portion that imparts an anisotropic refraction effect to at least light rays exiting through an edge section of the light exit surface to be oriented toward a center side of the display surface. The display device further includes a low refraction index layer interposed between the display panel and the optical member, and the low refraction index layer has a refraction index lower than at least a refraction index of the optical member.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: September 8, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuuichi Kanbayashi, Naru Usukura, Hiromi Katoh
  • Patent number: 10649131
    Abstract: A display device includes a display panel, a lighting device having a light emission surface, a center directive light refraction member imparting a refraction effect to light exiting through the light emission surface to be directed to a middle section of the display panel to generate a much light emission angle range where an emission light quantity is much and a less light emission angle range where the light emission quantity is less in a luminance angle distribution, and an asymmetric light refraction member configured to impart an asymmetric refraction effect to the emission light such that among emission light rays exiting the center directive light refraction member, light rays in the less light emission angle range is directed toward the less light emission angle range while a part of light rays in the much light emission angle range is directed toward the less light emission angle range.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: May 12, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Naru Usukura, Takafumi Shimatani
  • Patent number: 10606113
    Abstract: In the display device, a display panel, a linearly polarized light reflection layer, and a light scattering layer are configured to satisfy at least two states selected from the group consisting of: a state where the display panel includes a display surface with divided regions involving a display region and a non-display region, a state where the linearly polarized light reflection layer includes divided regions involving first and second reflection regions, and a state where the light scattering layer includes divided regions involving a light scattering region and a light transmitting region. At least two regions are superimposed on each other. The regions are selected from the group consisting of one of the display region and the non-display region, one of the first and second reflection regions, and one of the light scattering region and the light transmitting region and satisfy the at least two states.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: March 31, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Naru Usukura
  • Publication number: 20200081491
    Abstract: A display device includes: a foldable display panel having flexibility; a touch detector disposed selectively on one panel face side of the display panel and capable of detecting a plurality of touch areas; and a determiner for detecting that the display panel is folded only if the touch areas detected by the touch detector are three or more in number, and a largest first touch area thereof is located between the touch areas other than the first touch area.
    Type: Application
    Filed: September 9, 2019
    Publication date: March 12, 2020
    Inventors: TETSUO MURATA, TOMOHIRO KIMURA, NARU USUKURA
  • Publication number: 20200019010
    Abstract: The switching device of the present invention includes a switching liquid crystal cell switchable between a switching mode of converting a vibration direction of incident polarized light and a non-switching mode of not converting the vibration direction of the incident polarized light; an anisotropic light scattering layer configured to scatter incident light at a specific azimuth; and a polarized light reflective layer, wherein in the anisotropic light scattering layer, a haze is 50% or higher and a full width at half maximum of luminance at a first azimuth is greater than a full width at half maximum of the luminance at a second azimuth and less than ten times the full width at half maximum of the luminance at the second azimuth, the first azimuth being the specific azimuth where the scattered light has maximum intensity, the second azimuth being an azimuth where the scattered light has minimum intensity.
    Type: Application
    Filed: July 12, 2019
    Publication date: January 16, 2020
    Inventors: NARU USUKURA, KIYOSHI MINOURA
  • Publication number: 20200018956
    Abstract: The present disclosure provides a display apparatus capable of suppressing screen-door effect without requiring alignment between an optical element and a pixel. A display apparatus (1) includes a CF substrate (13) that determines a color of a sub-pixel corresponding to a color element, for each of a plurality of pixels, and a lenticular lens (14) that widens a full width at half maximum of luminance of emitted light more than a full width at half maximum of luminance of light incident from the CF substrate, in which the lenticular lens has a periodic structure smaller than a periodicity of arrangement of sub-pixels.
    Type: Application
    Filed: February 23, 2018
    Publication date: January 16, 2020
    Inventors: NARU USUKURA, RYUZO YUKI
  • Publication number: 20200012101
    Abstract: The size and weight of an eyepiece are reduced while the diameter of each eyepiece is maintained. In a head-mounted display (1) of the invention of a display region of a display device (102), an area of an image which a user views through the eyepiece (105) is an effective display region, and an area other than the area of the image which the user views is an ineffective display region, each of the display devices (102) has a shape in which the ineffective display region is cut out from the display region.
    Type: Application
    Filed: March 26, 2018
    Publication date: January 9, 2020
    Inventors: RYUZO YUKI, TOMOHIRO KIMURA, TAKAYUKI NISHIYAMA, NARU USUKURA, TAKESHI MASUDA
  • Publication number: 20190302461
    Abstract: A display device includes a display panel having a display surface and a lighting device that supplies light to the display panel. The lighting device includes a light source, and an optical member having at least a light exit surface through which the light emitted by the light source exits toward the display surface of the display panel. The optical member includes a light refraction portion that imparts an anisotropic refraction effect to at least light rays exiting through an edge section of the light exit surface to be oriented toward a center side of the display surface. The display device further includes a low refraction index layer interposed between the display panel and the optical member, and the low refraction index layer has a refraction index lower than at least a refraction index of the optical member.
    Type: Application
    Filed: March 28, 2019
    Publication date: October 3, 2019
    Inventors: YUUICHI KANBAYASHI, NARU USUKURA, HIROMI KATOH
  • Publication number: 20190285790
    Abstract: A display device includes a display panel, a lighting device having a light emission surface, a center directive light refraction member imparting a refraction effect to light exiting through the light emission surface to be directed to a middle section of the display panel to generate a much light emission angle range where an emission light quantity is much and a less light emission angle range where the light emission quantity is less in a luminance angle distribution, and an asymmetric light refraction member configured to impart an asymmetric refraction effect to the emission light such that among emission light rays exiting the center directive light refraction member, light rays in the less light emission angle range is directed toward the less light emission angle range while a part of light rays in the much light emission angle range is directed toward the less light emission angle range.
    Type: Application
    Filed: November 6, 2017
    Publication date: September 19, 2019
    Inventors: NARU USUKURA, TAKAFUMI SHIMATANI
  • Publication number: 20190212608
    Abstract: In the display device, a display panel, a linearly polarized light reflection layer, and a light scattering layer are configured to satisfy at least two states selected from the group consisting of: a state where the display panel includes a display surface with divided regions involving a display region and a non-display region, a state where the linearly polarized light reflection layer includes divided regions involving first and second reflection regions, and a state where the light scattering layer includes divided regions involving a light scattering region and a light transmitting region. At least two regions are superimposed on each other. The regions are selected from the group consisting of one of the display region and the non-display region, one of the first and second reflection regions, and one of the light scattering region and the light transmitting region and satisfy the at least two states.
    Type: Application
    Filed: December 28, 2018
    Publication date: July 11, 2019
    Inventor: NARU USUKURA
  • Publication number: 20190196194
    Abstract: A head-mounted display (1) includes: a liquid crystal display unit (2) including a display surface (7) facing forward, the liquid crystal display unit (2) configured to display an image on the display surface (7); an eyepiece lens (13) disposed at a position lower than the liquid crystal display unit (2); and a mirror unit (4) configured to reflect light based on the image displayed on the display surface (7) and guide the light thus reflected to the eyepiece lens (13).
    Type: Application
    Filed: November 15, 2018
    Publication date: June 27, 2019
    Inventors: DAVID JAMES MONTGOMERY, KA HO TAM, SCOTT WELLS, NARU USUKURA, TOMOHIRO KIMURA
  • Publication number: 20190155097
    Abstract: The present invention provides a display device that is excellent in designability and allows a reflection color in the non-display state to be less likely to appear differently at different viewing positions. The display device includes, in the following order: a display panel capable of switching between a display mode of emitting display light and a non-display mode of not emitting display light; a ?/4 retardation layer; a circularly polarized light ray reflection layer; and a light scattering layer capable of switching between a light scattering mode of scattering incident light and a light transmitting mode of transmitting incident light. The circularly polarized light ray reflection layer preferably contains a cholesteric liquid crystal.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 23, 2019
    Inventor: NARU USUKURA
  • Publication number: 20190101759
    Abstract: A liquid crystal display device 10 includes a liquid crystal panel 11, a backlight device 12 supplying light to the liquid crystal panel 11, LEDs 13 included in the backlight device 12, a light guide plate 15 that is an optical member and included in the backlight device 12 and disposed opposite the liquid crystal panel 11 and has a light guide plate light exit surface 15a through which light from the LEDs 13 exits toward the liquid crystal panel 11, and a light guide plate side light collecting portion 20 included in the light guide plate 15, which is the optical member, and applying an anisotropic refracting action to at least light rays exiting an edge portion of the light guide plate light exit surface 15a to be directed to a middle section of the liquid crystal panel 11.
    Type: Application
    Filed: March 17, 2017
    Publication date: April 4, 2019
    Inventors: NARU USUKURA, HIROMI KATOH
  • Publication number: 20190011697
    Abstract: A transmission-type screen (20) is a transmission-type screen for use in a head-up display (100), the transmission-type screen having a receiving surface to receive displaying light and an outgoing surface through which to emit a divergent light beam toward a combiner (40). The transmission-type screen (20) includes: a first optical element (21) which is disposed on the receiving surface side and which converges a light beam, the first optical element (21) having a first lens array (22) including a plurality of lenses (25) arranged with lens surfaces thereof being oriented toward the outgoing surface; and a second optical element (23) which is disposed on the outgoing surface side and which diverges a light beam, the second optical element (23) having a second lens array (24). In the first lens array, a numerical aperture NA of each lens satisfies the relationship NA=(r/2)/[f2+(r/2)2]1/2?0.13, where r is a diameter of each of the plurality of lenses and f is a focal length of each lens.
    Type: Application
    Filed: August 2, 2016
    Publication date: January 10, 2019
    Inventors: NARU USUKURA, TAKAFUMI SHIMATANI
  • Publication number: 20180321488
    Abstract: A head-up display 10 includes a projector 11 configured to project an image and having a projector surface 15a, a combiner 12 having a projection surface 12a onto which the image projected by the projector 11 is projected to allow an observer to see a virtual image, the projection surface 12a being tilted relative to the projector surface 15a of the projector 11, a lenticular lens sheet 18 including a plurality of top-displaced cylindrical lenses 25 arranged in a tilting direction tilted relative to the projection surface 12a, the top-displaced cylindrical lenses 25 each including a top 25a displaced such that a brightness peak of projector light is shifted, in relation to a central position in the tilting direction, toward a side where an optical path length of the project light from the projector surface 15a to the projection surface 12a is relatively long.
    Type: Application
    Filed: November 20, 2015
    Publication date: November 8, 2018
    Inventors: NARU USUKURA, TAKAFUMI SHIMATANI