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: 20220056178
    Abstract: A method for producing hollow fine particles containing a fluorine-containing resin and having a large average particle size. The method includes a step A of providing hollow fine particles by dispersing a solution containing a fluorine-containing monomer, an oil-soluble initiator, and a non-polymerizable solvent in water containing a fluorine-containing surfactant and thereby polymerizing the fluorine-containing monomer. Also disclosed are hollow fine particles including a fluorine-containing resin and having an average particle size of 70 nm or greater and 10 ?m or smaller. The hollow fine particles each have a porosity of 5% by volume or higher, and the fluorine-containing resin contains a polymerized unit based on a fluorine-containing monomer and a polymerized unit based on a crosslinkable monomer.
    Type: Application
    Filed: November 5, 2021
    Publication date: February 24, 2022
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshito Tanaka, Emi Yamamoto
  • Patent number: 10678100
    Abstract: The present invention makes it possible to reduce an afterimage phenomenon while preventing an increase in driving voltage. A liquid crystal display device (10) includes: a liquid crystal layer (3) and a pair of substrates which face each other across the liquid crystal layer (3); and an upper electrode (4), a lower electrode (5), and a first insulating layer (6) which are provided in a stack on one substrate (1) of the pair of substrates so that the upper electrode (4) and the lower electrode (5) overlap each other via the first insulating layer (6), the upper layer electrode (4) having an end surface which constitutes an opening of the upper electrode (4), the end surface being forward tapered and forming, with the one substrate (1), an average angle of inclination of not more than 30 degrees.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: June 9, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Mitsuru Chida, Emi Yamamoto
  • Patent number: 10656466
    Abstract: A wavelength conversion substrate according to one aspect of the present invention includes: a first substrate having an optical transparency; and a light modulation unit provided on one surface of the first substrate and configured to modulate a spectrum of incident light in accordance with a polarization state of the incident light. The light modulation unit includes: a plurality of metallic structures periodically provided at intervals from one another on one surface of the first substrate and configured to exhibit plasmon resonance due to incident light; and a plurality of wavelength conversion units provided so that at least some wavelength conversion units are adjacent to the plurality of metallic structures and comprising a wavelength converting material configured to emit light in a wavelength band different from a wavelength band of the incident light.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: May 19, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Koji Murata, Masakazu Kamura, Takashi Katayama, Mitsuru Chida, Takuya Ootani, Emi Yamamoto
  • Patent number: 10338426
    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: Grant
    Filed: March 11, 2015
    Date of Patent: July 2, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasushi Asaoka, Tsuyoshi Maeda, Shohei Katsuta, Emi Yamamoto, Sho Ochi
  • Publication number: 20190093015
    Abstract: A composition containing a photosensitive polymer in which the molecular structure changes due to absorption of light or a precursor of the photosensitive polymer and an additive that absorbs at least ultraviolet rays and that provides the energy of the absorbed ultraviolet rays to the photosensitive polymer, wherein the photosensitive polymer absorbs at least some of the ultraviolet rays when specifically polarized ultraviolet rays are irradiated as the light so as to undergo a first reaction that generates anisotropy in the molecular alignment of the photosensitive polymer in accordance with the polarization direction of the polarized light and a second reaction that further enhances the anisotropy generated in the molecular alignment of the photosensitive polymer by the first reaction, and the additive absorbs the irradiated ultraviolet rays so as to convert the ultraviolet rays to energy for causing the second reaction and provide the resulting energy to the photosensitive polymer.
    Type: Application
    Filed: March 9, 2017
    Publication date: March 28, 2019
    Inventors: MASAKAZU KAMURA, TAKASHI KATAYAMA, EMI YAMAMOTO
  • Patent number: 10168569
    Abstract: A light-diffusion member (7) includes: a substrate (39) having light-transmitting properties; a light-diffusion portion (40) on a face of the substrate (39) facing a display medium (6); and a light-blocking layer (41) on a part of the face of the substrate (39) facing the display medium (6) other than where the light-diffusion portion (40) is provided. The light-diffusion portion (40) includes: a light-emitting end face (40a) in contact with the substrate (39); and a light-incident end face (40b) facing, and being larger in area than, the light-emitting end face (40a). The adhesive layer (42) adheres to light-incident end face (40a) and partly (42a) encroaches into a space (43) between the light-diffusion portion (40) and light-blocking layer (41).
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: January 1, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shohei Katsuta, Yasushi Asaoka, Sho Ochi, Hideomi Yui, Tsuyoshi Maeda, Emi Yamamoto
  • Patent number: 10162214
    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: Grant
    Filed: May 15, 2015
    Date of Patent: December 25, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shohei Katsuta, Yasushi Asaoka, Sho Ochi, Emi Yamamoto, Hideomi Yui, Tsuyoshi Maeda, Tsuyoshi Kamada, Yuhsuke Tsuda, Katsumi Kondoh
  • Publication number: 20180364525
    Abstract: A wavelength conversion substrate according to one aspect of the present invention includes: a first substrate having an optical transparency; and a light modulation unit provided on one surface of the first substrate and configured to modulate a spectrum of incident light in accordance with a polarization state of the incident light. The light modulation unit includes: a plurality of metallic structures periodically provided at intervals from one another on one surface of the first substrate and configured to exhibit plasmon resonance due to incident light; and a plurality of wavelength conversion units provided so that at least some wavelength conversion units are adjacent to the plurality of metallic structures and comprising a wavelength converting material configured to emit light in a wavelength band different from a wavelength band of the incident light.
    Type: Application
    Filed: January 24, 2017
    Publication date: December 20, 2018
    Inventors: KOJI MURATA, MASAKAZU KAMURA, TAKASHI KATAYAMA, MITSURU CHIDA, TAKUYA OOTANI, EMI YAMAMOTO
  • Publication number: 20180348558
    Abstract: The present invention makes it possible to reduce an afterimage phenomenon while preventing an increase in driving voltage. A liquid crystal display device (10) includes: a liquid crystal layer (3) and a pair of substrates which face each other across the liquid crystal layer (3); and an upper electrode (4), a lower electrode (5), and a first insulating layer (6) which are provided in a stack on one substrate (1) of the pair of substrates so that the upper electrode (4) and the lower electrode (5) overlap each other via the first insulating layer (6), the upper layer electrode (4) having an end surface which constitutes an opening of the upper electrode (4), the end surface being forward tapered and forming, with the one substrate (1), an average angle of inclination of not more than 30 degrees.
    Type: Application
    Filed: February 16, 2017
    Publication date: December 6, 2018
    Inventors: MITSURU CHIDA, EMI YAMAMOTO
  • Patent number: 10067379
    Abstract: A liquid crystal display device includes a liquid crystal panel that includes a liquid crystal cell including a pair of substrates and a liquid crystal layer sandwiched between the pair of substrates, and a pair of polarizers arranged on a light incident side and a light emission side of the liquid crystal layer; an illumination device that is arranged on the light incident side of the liquid crystal cell, and emits light toward the liquid crystal cell; and a light control member that is arranged on the light emission side of the liquid crystal panel, and controls an emission direction of light emitted from the liquid crystal panel by anisotropically diffusing the light in an azimuthal direction as viewed from a direction normal to the liquid crystal panel.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: September 4, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuyoshi Sakuragi, Tsuyoshi Kamada, Toru Kanno, Shun Ueki, Tsuyoshi Maeda, Emi Yamamoto
  • Patent number: 10061150
    Abstract: A light control film includes a light shielding layer and a light diffusion portion, and, when an area of a part where the light shielding layer is in contact with one surface of the base material is set to S1, and an area of a part where a low refractive index portion is exposed between light incidence end surfaces is set to S2, the light shielding layer and the light diffusion portion are formed so as to satisfy (S1?S2)/S1×100?50.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 28, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Emi Yamamoto, Tsuyoshi Maeda, Toru Kanno
  • Patent number: 9939564
    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: Grant
    Filed: February 19, 2014
    Date of Patent: April 10, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Emi Yamamoto, Yuhsuke Tsuda, Tsuyoshi Maeda, Yasushi Asaoka, Shohei Katsuta
  • Patent number: 9904094
    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: Grant
    Filed: April 16, 2015
    Date of Patent: February 27, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shohei Katsuta, Tsuyoshi Maeda, Emi Yamamoto, Yasushi Asaoka, Hideomi Yui
  • Publication number: 20170363905
    Abstract: A light-diffusion member (7) includes: a substrate (39) having light-transmitting properties; a light-diffusion portion (40) on a face of the substrate (39) facing a display medium (6); and a light-blocking layer (41) on a part of the face of the substrate (39) facing the display medium (6) other than where the light-diffusion portion (40) is provided. The light-diffusion portion (40) includes: a light-emitting end face (40a) in contact with the substrate (39); and a light-incident end face (40b) facing, and being larger in area than, the light-emitting end face (40a). The adhesive layer (42) adheres to light-incident end face (40a) and partly (42a) encroaches into a space (43) between the light-diffusion portion (40) and light-blocking layer (41).
    Type: Application
    Filed: December 10, 2015
    Publication date: December 21, 2017
    Inventors: SHOHEI KATSUTA, YASUSHI ASAOKA, SHO OCHI, HIDEOMI YUI, TSUYOSHI MAEDA, EMI YAMAMOTO
  • Patent number: 9846326
    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: Grant
    Filed: July 24, 2014
    Date of Patent: December 19, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shohei Katsuta, Yasushi Asaoka, Toru Kanno, Hideomi Yui, Emi Yamamoto
  • Patent number: 9835904
    Abstract: A liquid crystal display device includes: a liquid crystal panel; 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 a first azimuth angle direction viewed from a normal direction of the liquid crystal panel to control an emission direction of the light. A pixel includes a first region in which a director of liquid crystal molecules is in a first direction, and a second region in which the director of the liquid crystal molecules is in a second orientation opposite to the first orientation in the first direction. A second azimuth angle direction in which light-diffusibility of the light control member is relatively strong, and the first direction approximately match each other.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: December 5, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shohei Katsuta, Tsuyoshi Maeda, Hideomi Yui, Emi Yamamoto
  • Patent number: 9772430
    Abstract: A light control film (light control member) includes a light transmissive base, a plurality of light shielding portions scattered over one surface of the base, and a light diffusing portion formed on the one surface of the base in a region other than regions in which the light shielding portions are formed. The light diffusing portion has a light exit end face and a light incident end face having a larger area than the light exit end face, and the height of the light diffusing portion is greater than the thickness of the light shielding portions. At least part of the opening of at least some of a plurality of air-cavities has a protrusion which is formed of a portion of the light diffusing portion that projects toward the inner side of the opening.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: September 26, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Emi Yamamoto, Toru Kanno, Tsuyoshi Maeda
  • Publication number: 20170153364
    Abstract: A light diffusion member includes a light transmissive substrate, a plurality of light diffusion sections, a light shielding layer, and a bonding layer. The plurality of light diffusion sections are disposed in first regions on one surface of the substrate. The light shielding layer is disposed in a second region which is other than the first regions on the one surface of the substrate. The bonding layer is disposed so as to overlap with the plurality of light diffusion sections. Each of the light diffusion sections is formed such that one surface side of the substrate forms a light emitting end surface, a surface facing the light emitting end surface forms a light incident end surface, and a cross-sectional area of each of the light diffusion sections is increased from the light emitting end surface toward the light incident end surface.
    Type: Application
    Filed: May 10, 2012
    Publication date: June 1, 2017
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Toru KANNO, Tsuyoshi MAEDA, Emi YAMAMOTO
  • Patent number: 9638840
    Abstract: A light diffusion member includes a light transmissive substrate, a plurality of light diffusion sections formed on one surface of the substrate, a light shielding layer formed in a region other than formation regions of the light diffusion sections on the one surface of the substrate, and light scattering bodies. The light diffusion sections have a light emitting end surface on the substrate side and a light incident end surface having an area greater than an area of the light emitting end surface on a side opposite to the substrate side. A height from the light incident end surface to the light emitting end surface of each of the light diffusion sections is greater than a thickness of the light shielding layer. The light scattering bodies are disposed further on a light emitting side than the light diffusion sections.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: May 2, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Emi Yamamoto, Tsuyoshi Maeda, Toru Kanno
  • 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