Patents by Inventor Emi Yamamoto

Emi Yamamoto 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: 20170082894
    Abstract: A liquid crystal display device according to one aspect of the present invention includes a liquid crystal panel of a vertical alignment mode, and an optical control member disposed on a light-exiting side of the liquid crystal panel. The liquid crystal panel includes a plurality of pixels having at least two domains (50a, 50b), in which directors of liquid crystal molecules are in a first direction. An absorption axis of a first polarizing sheet and an absorption axis of a second polarizing sheet are a mutually orthogonal and form angle that is approximately 45°. The optical control member includes a base, a light diffusion part, a light blocking layer and a low refractive index part.
    Type: Application
    Filed: May 15, 2015
    Publication date: March 23, 2017
    Inventors: Shohei KATSUTA, Yasushi ASAOKA, Sho OCHI, Emi YAMAMOTO, Hideomi YUI, Tsuyoshi MAEDA, Tsuyoshi KAMADA, Yuhsuke TSUDA, Katsumi KONDOH
  • Patent number: 9594194
    Abstract: A light diffusion member includes a substrate having light transmissivity, a plurality of light shielding layers, and light diffusion portions. The light diffusion portions have a light-emitting end surface, a light incident end surface which has a larger area than the area of the light-emitting end surface, and a reflecting face. Light which enters from the light incident end surface is anisotropically diffused in an azimuth direction seen from a normal direction of the substrate, and the height from the light incident end surface to the light-emitting end surface of the light diffusion portion is greater than the thickness of the light shielding layers. A hollow portion of the light diffusion portion is formed in the formation region of the light shielding layers, and air is present in the hollow portion.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: March 14, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasushi Asaoka, Tsuyoshi Maeda, Emi Yamamoto, Toru Kanno, Shohei Katsuta
  • Publication number: 20170038634
    Abstract: A liquid crystal display (1) includes a liquid crystal panel (4), a backlight (2), and a light-diffusing member (7). There exist azimuths in which a transmittance of the liquid crystal panel (4) and a luminance of the backlight (2) are higher than a transmittance and a luminance in a direction of a normal. The azimuth in which the transmittance of the liquid crystal panel (4) is higher coincides with the azimuth in which the luminance of the backlight (2) is higher.
    Type: Application
    Filed: April 16, 2015
    Publication date: February 9, 2017
    Inventors: Shohei KATSUTA, Tsuyoshi MAEDA, Emi YAMAMOTO, Yasushi ASAOKA, Hideomi YUI
  • Patent number: 9557597
    Abstract: In a liquid crystal display device including a light control film utilizing total reflection, a liquid crystal panel, and a directional backlight, the light control film includes a transparent base material, a light blocking layer, and a light diffusing portion. The light diffusing portion has a light output end surface on side closer to the transparent base material and a light input end surface on side opposite to the transparent base material, the light input end surface having a larger area than the light output end surface. A film thickness of the light diffusing portion is larger than a thickness of the light blocking layer. A material having a smaller refractive index than the light diffusing portion is present in a cavity defined by the light diffusing portion, and the film anisotropically diffuses light.
    Type: Grant
    Filed: December 25, 2012
    Date of Patent: January 31, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toru Kanno, Emi Yamamoto, Tsuyoshi Maeda
  • Publication number: 20170003545
    Abstract: According to an aspect of the present invention, there is provided a light diffusion member which includes a light diffusion film, a polarizing film, and a retardation film. The light diffusion film includes a first substrate, a light diffusion portion, and a light shielding layer. The polarizing film includes a second substrate and a polarization layer. The retardation film includes a third substrate and a retardation layer. The retardation layer is formed from a birefringence body which has optically-negative uniaxiality. An alignment direction of the birefringence body is different in a thickness direction thereof. A slow axis of the retardation layer is positioned at azimuth between a transmission axis and an absorption axis of the polarization layer.
    Type: Application
    Filed: March 11, 2015
    Publication date: January 5, 2017
    Inventors: Yasushi ASAOKA, Tsuyoshi MAEDA, Shohei KATSUTA, Emi YAMAMOTO, Sho OCHI
  • Publication number: 20160370512
    Abstract: A light diffusing film (a light diffusing member) according to the present invention includes a substrate which has optical transparency and a birefringence, a wavelength control layer which is formed one surface of the substrate, a light diffusing portion which is formed in a region other than a forming region of the wavelength control layer in the one surface of the substrate, and a light scattering layer, the light diffusing portion includes a light emitting end surface which comes into contact with the substrate and a light incident end surface which is opposite to the light emitting end surface and has a larger area than an area of the light emitting end surface, and a height from the light incident end surface to the light emitting end surface is larger than a layer thickness of the wavelength control layer.
    Type: Application
    Filed: June 26, 2014
    Publication date: December 22, 2016
    Inventors: Emi YAMAMOTO, Tsuyoshi MAEDA, Yasushi ASAOKA, Shohei KATSUTA, Hideomi YUI
  • Publication number: 20160363762
    Abstract: A MEMS display device (1) is provided with a display unit (14), and a light control film (9) which controls a light distributing property of light which is output from the display unit (14), in which the display unit (14) includes a backlight (11), an aperture layer (22) which includes an opening (24) which transmits light output from the backlight (11), and a shutter (23) which is movable with respect to the opening (24), and performs switching between transmitting of light through the opening (24) and shielding.
    Type: Application
    Filed: February 25, 2015
    Publication date: December 15, 2016
    Inventors: Emi YAMAMOTO, Tsuyoshi MAEDA
  • Patent number: 9494724
    Abstract: A liquid crystal display device includes a liquid crystal panel, a pair of polarizing layers, a lighting device, and an output angle control member. The liquid crystal panel includes a pair of substrates, and a liquid crystal layer. The liquid crystal layer is interposed between the pair of substrates. The pair of polarizing layers is arranged on a light input side and a light output side of the liquid crystal layer. The lighting device is arranged on the light input side of the liquid crystal panel and radiates light toward the liquid crystal panel. The output angle control member is arranged on the light output side of the liquid crystal panel and controls an output angle of light which is output from the liquid crystal panel.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: November 15, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Emi Yamamoto, Tsuyoshi Maeda, Toru Kanno, Tsuyoshi Kamada, Shohei Katsuta
  • Patent number: 9465146
    Abstract: A display apparatus includes at least a light source, a display element, and an isotropic diffusion layer.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: October 11, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Toru Kanno, Emi Yamamoto, Tsuyoshi Maeda
  • Patent number: 9453946
    Abstract: Provided is a display device including a light-diffusing member that includes a substrate, a plurality of light-shielding layers, and a light-diffusing section, and a polarizing plate.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: September 27, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasushi Asaoka, Tsuyoshi Maeda, Emi Yamamoto, Toru Kanno, Shohei Katsuta, Hideomi Yui
  • Publication number: 20160139453
    Abstract: A light diffusing member includes a base having light transmissivity, a light diffuser formed with a predetermined height on a surface of the base facing a display body, and a light blocking layer formed in a region other than the light diffuser on the surface of the base facing the display body. The light blocking layer has a thickness smaller than the height of the light diffuser. The light diffuser has a light exit end surface that is in contact with the base, and a light entrance end surface that is opposite the light exit end surface and that has an area larger than the area of the light exit end surface. The light entrance end surface is adhered to the adhesive layer, and the thickness of the adhesive layer is smaller than the height of a space formed between the light diffuser and the light blocking layer, the height extending from the light blocking layer to the light entrance end surface.
    Type: Application
    Filed: June 2, 2014
    Publication date: May 19, 2016
    Inventors: Hideomi YUI, Tsuyoshi MAEDA, Emi YAMAMOTO, Shohei KATSUTA
  • Publication number: 20160139454
    Abstract: A light diffusion member includes a substrate that has optical transparency, a light diffusion portion that is formed with a prescribed height on one surface of the substrate, a light shielding layer that is formed with a thickness less than the height of the light diffusion portion in another region of the one surface of the substrate than the light diffusion portion, and an antiglare layer that is formed on the other surface of the substrate. The light diffusion portion includes a light emission end surface that contacts with the substrate, a light incident end surface that faces the light emission end surface and has a larger area than an area of the light emission end surface, and a side surface that is formed between the light emission end surface and the light incident end surface, and the antiglare layer includes a binder layer and plural light diffusion particles that are dispersedly arranged in the binder layer.
    Type: Application
    Filed: July 24, 2014
    Publication date: May 19, 2016
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Shohei KATSUTA, Yasushi ASAOKA, Toru KANNO, Hideomi YUI, Emi YAMAMOTO
  • Patent number: 9341345
    Abstract: A light diffusion member includes a light-transmissive base, a plurality of light diffusion portions, a connecting portion, and a light absorbing layer. The light diffusion portions are arranged on one surface of the base and have light-incident end surfaces each positioned on the side away from the base and having a larger area than a light-emergent end surface thereof. The connecting portion connects at least two adjacent ones of the plural light diffusion portions to each other, and is positioned near the light-incident end surfaces of the adjacent light diffusion portions. The light absorbing layer is formed on the one surface of the base in a region different from a region where the light diffusion portions are formed. A size from the light-incident end surface to the light-emergent end surface of the light diffusion portion is larger than a thickness of the light absorbing layer.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: May 17, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Emi Yamamoto, Toru Kanno, Tsuyoshi Maeda
  • Patent number: 9279919
    Abstract: A viewing angle extending film (a light diffusing member) includes a base material with optical transparency, a plurality of light-shielding layers dotted on one surface of the base material, and a transparent resin layer (optically transparent material layer) provided on the one surface of the base material. At least a light-shielding layer, which is part of the plurality of light-shielding layers, has a planar shape surrounded by a first figure and a second figure contained in the first figure or a planar shape surrounded by at least part of the first figure and at least part of the second figure overlaid with the first figure. Hollow portions are provided in a formation region of the light-shielding layers, each hollow portion being shaped so that a cross-sectional area obtained by cutting along a plane parallel to the one surface of the base material is large on the light-shielding layer side and is gradually decreased as being away from the light-shielding layer.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: March 8, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toru Kanno, Emi Yamamoto, Tsuyoshi Maeda
  • Patent number: 9274255
    Abstract: A light-diffusion member includes a substrate having light transparency, a plurality of light-diffusion parts formed on one surface of the substrate, and a light-absorbing layer formed in a region other than a region where the light-diffusion parts are formed, among the one surface of the substrate. Each light-diffusion part includes a light-emission end surface on the side of the substrate and a light-incident end surface of an area larger than an area of the light-emission end surface on a side opposite to the side of the substrate. The height from the light-incident end surface of the light-diffusion part to the light-emission end surface thereof is larger than the thickness of the light-absorbing layer. The plurality of light-diffusion parts are randomly arranged on the one surface of the substrate.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: March 1, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Emi Yamamoto, Toru Kanno, Hidefumi Yoshida, Tsuyoshi Maeda, Tsuyoshi Kamada
  • Publication number: 20150378069
    Abstract: This light-diffusing member includes a light-transmissive substrate, a plurality of wavelength-controlling layers formed on one surface of the light-transmissive substrate, and a light-diffusing portion formed on the one surface of the light-transmissive substrate in a region other than a region where the wavelength-controlling layers are formed.
    Type: Application
    Filed: February 19, 2014
    Publication date: December 31, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Emi YAMAMOTO, Yuhsuke TSUDA, Tsuyoshi MAEDA, Yasushi ASAOKA, Shohei KATSUTA
  • Publication number: 20150369972
    Abstract: The light diffusion member includes a substrate having light transmissivity, a plurality of light shielding layers, and light diffusion portions. The light diffusion portions have a light-emitting end surface, a light incident end surface which has a larger area than the area of the light-emitting end surface, and a reflecting face. Light which enters from the light incident end surface is anisotropically diffused in an azimuth direction seen from a normal direction of the substrate, and the height from the light incident end surface to the light-emitting end surface of the light diffusion portion is configured to be greater than the thickness of the light shielding layers. The azimuth direction where the diffusion by the light diffusion portion is relatively strong, and any one side making up the outer shape of the substrate, are generally parallel.
    Type: Application
    Filed: January 28, 2014
    Publication date: December 24, 2015
    Inventors: Yasushi Asaoka, Tsuyoshi Maeda, Emi Yamamoto, Toru Kanno, Shohei Katsuta
  • Publication number: 20150286101
    Abstract: A liquid crystal display device includes: a liquid crystal panel that includes a first substrate having a first vertical alignment film, a second substrate having a second vertical alignment film, a liquid crystal layer having a negative dielectric anisotropy, a first polarizing plate, and a second polarizing plate; an illuminating device; and a light control member that is disposed on a light emission side of the liquid crystal panel. The light control member diffuses light that is emitted from the liquid crystal panel in an anisotropic manner in an azimuth angle direction viewed from a normal direction of the liquid crystal panel to control an emission direction of the light.
    Type: Application
    Filed: November 19, 2013
    Publication date: October 8, 2015
    Inventors: Shohei Katsuta, Tsuyoshi Maeda, Hideomi Yui, Emi Yamamoto
  • Publication number: 20150285963
    Abstract: Provided is a display device including a light-diffusing member that includes a substrate, a plurality of light-shielding layers, and a light-diffusing section, and a polarizing plate.
    Type: Application
    Filed: October 24, 2013
    Publication date: October 8, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Yasushi Asaoka, Tsuyoshi Maeda, Emi Yamamoto, Toru Kanno, Shohei Katsuta, Hideomi Yui
  • Patent number: 9111694
    Abstract: The present invention provides an electric double layer capacitor having a high withstanding voltage, less deterioration, and excellent long-term reliability, especially an effect of suppressing expansion. The present invention relates to an electrolyte solution for an electric double layer capacitor. The solution comprises an electrolyte-salt-dissolving solvent (I) and an electrolyte salt (II). The electrolyte-salt-dissolving solvent (I) contains a fluorine-containing chain ether and a nitrile compound.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: August 18, 2015
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kenzou Takahashi, Meiten Koh, Mai Koyama, Emi Yamamoto