Patents by Inventor Hiromi Katoh

Hiromi Katoh 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: 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
  • Patent number: 10386692
    Abstract: An electrophoretic element according to an embodiment of the present invention includes: a first substrate and a second substrate facing each other; and an electrophoretic layer provided between the first substrate and the second substrate, and has a plurality of pixels. In each pixel, the electrophoretic layer includes a dispersion medium, and a plurality of types of electrophoretic particles dispersed in the dispersion medium. The plurality of types of electrophoretic particles include first electrophoretic particles and second electrophoretic particles that are charged with the same polarity and have different threshold characteristics from each other. In each pixel, the electrophoretic element includes at least three electrodes to which different potentials can be applied.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: August 20, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyuki Moriwaki, Hiromi Katoh
  • 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: 20190039090
    Abstract: Provided are a brilliant pigment-containing aqueous base coat coating material with which it is possible to ensure waterproof adhesiveness and impart a metallic gloss, and a method for forming a multilayer film using the same. The invention provides a brilliant pigment-containing aqueous base coat coating material including water-dispersible acrylic polymer particles (A), a water-soluble acrylic resin (B), a curing agent (C), and a brilliant pigment (D) obtained by pulverizing a vapor-deposited metal film to create metal chips. The water-soluble acrylic resin (B) is a copolymer of an N-substituted (meth)acrylamide (i), a hydroxyl group-containing polymerizable unsaturated monomer (ii), a carboxyl group-containing polymerizable unsaturated monomer (iii), and a polymerizable unsaturated monomer (iv) other than (i)-(iii). The brilliant pigment (D) is contained in a pigment weight concentration (PWC) in the range of 10-40%.
    Type: Application
    Filed: January 23, 2017
    Publication date: February 7, 2019
    Applicant: KANSAI PAINT CO., LTD.
    Inventors: Hiroki TAKEDA, Tohru IWAMOTO, Hiromi KATOH, Junichi KAJIMA, Shigeru TOMIZAWA
  • Patent number: 10102814
    Abstract: A controllable device for phase modulation of coherent light comprises a modulator matrix having a plurality of liquid crystal modulator cells each being adapted to modulate a phase value of light passing through a liquid crystal modulator cell depending on a voltage, which is applied to the liquid crystal modulator cell; at least one polarity area of said modulator matrix including at least one liquid crystal modulator cell; at least one storage unit for storing at least one pair of voltage values of which one has a positive and the other has a negative polarity for the liquid crystal modulator cells, whereby the pair of voltage values corresponds to a predetermined phase value; and a control unit for selectively applying one pair of voltage values to one liquid crystal modulator cell.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: October 16, 2018
    Assignees: SEEREAL TECHNOLOGIES S.A., SHARP CORPORATION
    Inventors: Robert Missbach, Stephan Reichelt, Norbert Leister, Ralf Haussler, Naru Usukura, Hiromi Katoh, Yuichi Kanbayashi
  • Publication number: 20180143503
    Abstract: An electrophoretic element according to an embodiment of the present invention includes: a first substrate and a second substrate facing each other; and an electrophoretic layer provided between the first substrate and the second substrate, and has a plurality of pixels. In each pixel, the electrophoretic layer includes a dispersion medium, and a plurality of types of electrophoretic particles dispersed in the dispersion medium. The plurality of types of electrophoretic particles include first electrophoretic particles and second electrophoretic particles that are charged with the same polarity and have different threshold characteristics from each other. In each pixel, the electrophoretic element includes at least three electrodes to which different potentials can be applied.
    Type: Application
    Filed: April 26, 2016
    Publication date: May 24, 2018
    Inventors: HIROYUKI MORIWAKI, HIROMI KATOH
  • Patent number: 9857586
    Abstract: A head-up display 10 includes a MEMS mirror component 14 for displaying images and a combiner 12 for reflecting light from the MEMS mirror component 14 so that an observer observes reflected light as a virtual image and for transmitting ambient light. The combiner 12 includes a green light reflecting portion 17 for selectively reflecting mainly green light in a green light wavelength region, a red light reflecting portion 16 for selectively reflecting mainly red light in a red light wavelength region, and a blue light reflecting portion 18 for reflecting blue light in a blue light wavelength region. The light reflecting portions 16 to 18 are laid in layers. The green light reflecting portion 17 is arranged the closest to the MEMS mirror component 14.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: January 2, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takafumi Shimatani, Naru Usukura, Hiromi Katoh
  • Publication number: 20170351134
    Abstract: A combiner 12 includes a cholesteric liquid crystal layer 17 that imparts an optical effect to light, and a cholesteric liquid crystal layer carrier 18 of a plate shape that is an optical functional layer carrier having a plate surface with the cholesteric liquid crystal layer 17 disposed thereon, being subjected to biaxial stretching in such a manner that one of two intersecting directions along the plate surface is a low stretching direction in which a stretch ratio is relatively low and that the other is a high stretching direction in which the stretch ratio is relatively high, and being subjected to biaxial deformation to have the plate surface deformed into a curved shape in such a manner that a large elongation amount direction in which the amount of elongation by deformation is relatively large matches the low stretching direction and that a small elongation amount direction in which the amount of elongation by deformation is relatively small matches the high stretching direction.
    Type: Application
    Filed: December 11, 2015
    Publication date: December 7, 2017
    Inventors: Takafumi SHIMATANI, Naru USUKURA, Hiromi KATOH, Youzo FUJIMURA
  • Patent number: 9810948
    Abstract: The present invention relates to a controllable diffraction device for a light modulator device. The controllable diffraction device comprises at least two substrates, at least one electrode on each of said substrates facing each other, and liquid crystals forming at least one liquid crystal layer arranged between said electrodes on said substrates. The orientation of the liquid crystals is controllable by a voltage supplied to the electrodes. The liquid crystal layer is provided on at least one alignment layer arranged on at least one electrode on said substrates. The liquid crystals close to the alignment layer are pre-oriented by at least one pre-tilt angle relative to the alignment layer such that the resulting light diffraction in opposite spatial directions is approximately equal.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: November 7, 2017
    Assignees: SHARP KABUSHIKI KAISHA, SEEREAL TECHNOLOGIES S.A.
    Inventors: Naru Usukura, Hiromi Katoh, Yuichi Kanbayashi, Norbert Leister, Ralf Haussler
  • Publication number: 20170052369
    Abstract: A head-up display 10 includes a MEMS mirror component 14 for displaying images and a combiner 12 for reflecting light from the MEMS mirror component 14 so that an observer observes reflected light as a virtual image and for transmitting ambient light. The combiner 12 includes a green light reflecting portion 17 for selectively reflecting mainly green light in a green light wavelength region, a red light reflecting portion 16 for selectively reflecting mainly red light in a red light wavelength region, and a blue light reflecting portion 18 for reflecting blue light in a blue light wavelength region. The light reflecting portions 16 to 18 are laid in layers. The green light reflecting portion 17 is arranged the closest to the MEMS mirror component 14.
    Type: Application
    Filed: April 23, 2015
    Publication date: February 23, 2017
    Inventors: Takafumi SHIMATANI, Naru USUKURA, Hiromi KATOH
  • Publication number: 20170045739
    Abstract: A transmission screen (2) includes at least two optical elements (13 and 14) condensing or diverging a light beam anisotropically. The at least two optical elements each include a light receiving surface (10) receiving display light; and a light emitting surface (11) emitting a divergent light beam toward a combiner (4).
    Type: Application
    Filed: April 20, 2015
    Publication date: February 16, 2017
    Inventors: Naru USUKURA, Hiromi KATOH, Takafumi SHIMATANI
  • Patent number: 9563114
    Abstract: A screen includes: a diffraction member and a scattering member. The diffraction member selectively diffracts image light and orients this light towards a viewer. In order for the image light to be scattered to a higher degree than ambient light that enters the scattering member on the side opposite of the viewer, the degree to which the scattering member scatters polarized light varies according to the polarization direction of the light. Thus, regardless of the positional relationship of the screen and a projector, which projects image light, it is possible to use a relatively simple industrial manufacturing process that can ensure the following to a satisfactory extent: brightness of the screen in the front direction, a wide viewing angle, and visual clarity through the screen.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: February 7, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Naru Usukura, Hiromi Katoh, Takafumi Shimatani
  • Patent number: 9535548
    Abstract: A display device (1) includes (i) a display panel (12) including a polarizing plate (18) on a surface of the display panel (12) and (ii) a touch panel (20) including a birefringent base material (31) on which a Y electrode pattern (32) and an X electrode pattern (33) are provided. Polarized light which has exited from the polarizing plate (18) enters the birefringent base material (31). The display device (1) includes an antireflection layer (28) which reduces reflection of the polarized light. The antireflection layer (28) is provided on a first surface of the touch panel (20) which first surface is opposite to a second surface of the touch panel (20) which second surface faces the display panel (12).
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: January 3, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yuhji Yashiro, Kazutoshi Kida, Hiromi Katoh
  • Patent number: 9401712
    Abstract: Provided is a touch panel substrate to be used in a touch panel, the touch panel substrate having improved display qualities. A touch panel substrate of one embodiment of the present invention is provided with a first detection electrode having a plurality of first lattice electrodes that are aligned in the lateral direction. Each of the first lattice electrodes includes conductor lines formed in a lattice shape parallel to the outer shape of each of the first lattice electrodes, and in each of the first lattice electrodes, the diagonal line between the two opposing corners adjacent to first relay wiring is tilted with respect to the lateral direction.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: July 26, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shinji Yamagishi, Kazutoshi Kida, Hiromi Katoh
  • Publication number: 20160139497
    Abstract: A screen includes: a diffraction member and a scattering member. The diffraction member selectively diffracts image light and orients this light towards a viewer. In order for the image light to be scattered to a higher degree than ambient light that enters the scattering member on the side opposite of the viewer, the degree to which the scattering member scatters polarized light varies according to the polarization direction of the light. Thus, regardless of the positional relationship of the screen and a projector, which projects image light, it is possible to use a relatively simple industrial manufacturing process that can ensure the following to a satisfactory extent: brightness of the screen in the front direction, a wide viewing angle, and visual clarity through the screen.
    Type: Application
    Filed: May 16, 2014
    Publication date: May 19, 2016
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Naru USUKURA, Hiromi KATOH, Takafumi SHIMATANI
  • Patent number: 9335854
    Abstract: A plurality of first sensor pixel circuits each sensing light during a sensing period when a backlight is turned on and retaining the amount of sensed light otherwise in accordance with a clock signal and a plurality of second sensor pixel circuits each sensing light during a sensing period when the backlight is turned off and retaining the amount of sensed light otherwise in accordance with a clock signal are arranged in a pixel region. The sensor pixel circuits of two types are connected to different output lines, so that a difference between two output signals is obtained at the outside of the sensor pixel circuit. The sensor pixel circuits described above are used for detecting a difference between an amount of light to be incident when the backlight is turned on and an amount of light to be incident when the backlight is turned off.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: May 10, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuhiro Sugita, Kohhei Tanaka, Kaoru Yamamoto, Hiromi Katoh
  • Patent number: 9205277
    Abstract: A system for influencing a state of a user includes a light source for emitting light influencing the state of the user. The system includes a light controller selectively controlling the emission of the light and an analysis engine which provides a signal to the light controller indicating a desired emission of the light. The system selectively directs blue light from the light source onto a material that retransmits it as a light different than blue light.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: December 8, 2015
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Xiao-Fan Feng, Hiromi Katoh
  • Publication number: 20150293409
    Abstract: The present invention relates to a controllable diffraction device for a light modulator device. The controllable diffraction device comprises at least two substrates, at least one electrode on each of said substrates facing each other, and liquid crystals forming at least one liquid crystal layer arranged between said electrodes on said substrates. The orientation of the liquid crystals is controllable by a voltage supplied to the electrodes. The liquid crystal layer is provided on at least one alignment layer arranged on at least one electrode on said substrates. The liquid crystals close to the alignment layer are pre-oriented by at least one pre-tilt angle relative to the alignment layer such that the resulting light diffraction in opposite spatial directions is approximately equal.
    Type: Application
    Filed: September 5, 2012
    Publication date: October 15, 2015
    Inventors: Naru Usukura, Hiromi Katoh, Yuichi Kanbayashi, Norbert Leister, Ralf Haussler
  • Publication number: 20150277169
    Abstract: An active liquid crystal diffraction element includes: a first transparent substrate; a second transparent substrate; a liquid crystal layer; a first electrode; a second electrode; a control member; and an alignment member, wherein the second electrode includes a plurality of small electrodes; the control member controls a magnitude of an electric voltage applied to each of the plurality of small electrodes; the alignment member confers a liquid crystal molecular alignment without any pre-tilt to the liquid crystal layer; and the liquid crystal molecular alignment is parallel to the surface of the first transparent substrate.
    Type: Application
    Filed: September 5, 2012
    Publication date: October 1, 2015
    Inventors: Naru Usukura, Yuuichi Kanbayashi, Hiromi Katoh, Norbert Leister
  • Publication number: 20150279293
    Abstract: A controllable device for phase modulation of coherent light comprises a modulator matrix having a plurality of liquid crystal modulator cells each being adapted to modulate a phase value of light passing through a liquid crystal modulator cell depending on a voltage, which is applied to the liquid crystal modulator cell; at least one polarity area of said modulator matrix including at least one liquid crystal modulator cell; at least one storage unit for storing at least one pair of voltage values of which one has a positive and the other has a negative polarity for the liquid crystal modulator cells, whereby the pair of voltage values corresponds to a predetermined phase value; and a control unit for selectively applying one pair of voltage values to one liquid crystal modulator cell.
    Type: Application
    Filed: October 1, 2012
    Publication date: October 1, 2015
    Applicants: SEEREAL TECHNOLOGIES S.A., SHARP CORPORATION
    Inventors: Robert Missbach, Stephan Reichelt, Norbert Leister, Ralf Haussler, Naru Usukura, Hiromi Katoh, Yuichi Kanbayashi