Patents by Inventor Hidehiko Takanashi

Hidehiko Takanashi 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: 20150293424
    Abstract: An electrophoretic element according to the disclosure includes: an insulating liquid (1); a plurality of electrophoretic particles (10) provided in the insulating liquid (1); and a porous layer (20) provided in the insulating liquid (1) and having a fibrous structure (21). The electrophoretic particles (10) and the porous layer (20) have same charging polarity as one another.
    Type: Application
    Filed: November 1, 2012
    Publication date: October 15, 2015
    Inventors: Ken Kobayashi, Hidehiko Takanashi, Yuriko Kaino, Aya Shuto
  • Publication number: 20150293425
    Abstract: The present disclosure relates to a display apparatus that includes a first layer (30A) and a second layer (30B) disposed adjacent one another. The index of refraction of the second layer (30B) may be different from the index of refraction of the first layer (30A). The apparatus further includes a plurality of electrophoretic particles (20) associated with at least one of the first layer (30A) and the second layer (30B). The present disclosure also relates to a method of manufacturing a display apparatus, including positioning a first layer (30A) adjacent to a second layer (30B). A plurality of electrophoretic particles (20) is positioned within at least one of the first layer (30A) and the second layer (30B). The display apparatus is operated by applying an electric field to cause movement of a plurality of electrophoretic particles (20) through the first layer (30A) toward the second layer (30B).
    Type: Application
    Filed: November 19, 2013
    Publication date: October 15, 2015
    Applicant: Sony Corporation
    Inventors: Yuriko Kaino, Ken Kobayashi, Aya Shuto, Hidehiko Takanashi, Masakazu Mitsugi, Atsuhito Yasui
  • Publication number: 20150227017
    Abstract: An electrophoresis device including: in an insulating liquid, migrating particles in a charged state; and a porous layer including a fibrous structure and non-migrating particles, the fibrous structure having a potential opposite to that of the migrating particles, and the non-migrating particles held by the fibrous structure.
    Type: Application
    Filed: July 17, 2013
    Publication date: August 13, 2015
    Applicant: Sony Corporation
    Inventors: Aya Shuto, Hidehiko Takanashi, Ken Kobayashi, Yuriko Kaino, Masakazu Mitsugi
  • Publication number: 20150124312
    Abstract: A display unit includes: a first substrate; a second substrate facing the first substrate; a display layer provided between the first substrate and the second substrate and allowed to control light transmission or light reflection; and a seal layer including an additive and provided between the first substrate and the display layer.
    Type: Application
    Filed: October 29, 2014
    Publication date: May 7, 2015
    Applicant: Sony Corporation
    Inventors: Masakazu Mitsugi, Atsuhito Yasui, Hidehiko Takanashi, Ken Kobayashi, Yuriko Kaino, Aya Shuto, Satoko Asaoka, Yasuyuki Kudo, Ryo Kasegawa
  • Patent number: 8947761
    Abstract: An optical element includes: a first electrode and a second electrode that are arranged opposite each other, in which the first electrode allows part of incident light to pass therethrough and reflects another part of the incident light, and the second electrode reflects light that has passed through the first electrode; a first dielectric film and a second dielectric film covering the first electrode and the second electrode, respectively; and a first medium and a second medium each interposed and sealed in a space containing a cavity portion between the first dielectric film and the second dielectric film, in which the first medium and the second medium have refractive indices different from one another, and one of the first medium and the second medium is a polar liquid.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: February 3, 2015
    Assignee: Sony Corporation
    Inventors: Kenichi Takahashi, Hidehiko Takanashi
  • Patent number: 8908258
    Abstract: There are provided an electrophoresis device and a display unit which are capable of realizing high contrast. The electrophoresis device includes a plurality of electrophoretic particles and a porous layer that are contained in an insulating liquid, the porous layer being formed using a fibrous structure including a plurality of non-migrating particles. An average particle size of the electrophoretic particles is equal to or less than one-fifth of an average pore size of the porous layer.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: December 9, 2014
    Assignee: Sony Corporation
    Inventors: Ken Kobayashi, Hidehiko Takanashi, Yuriko Kaino, Aya Shuto
  • Patent number: 8896908
    Abstract: An electrophoretic device includes: in an insulating liquid, a plurality of electrophoretic particles; and a porous layer formed of a fibrous structure, the fibrous structure including a plurality of non-migrating particles. The fibrous structure is configured of superposed fibers extending in an identical direction or different directions, and includes a cross-linking section in which the fibers are linked to each other in part or all of contact points between the fibers.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: November 25, 2014
    Assignee: Sony Corporation
    Inventors: Aya Shuto, Hidehiko Takanashi, Ken Kobayashi, Yuriko Kaino
  • Publication number: 20140300850
    Abstract: A display unit includes: a base; a display layer having a first end surface; and a wiring layer disposed between the base and the display layer, the wiring layer being provided in a region differing from a position corresponding to the first end surface.
    Type: Application
    Filed: March 21, 2014
    Publication date: October 9, 2014
    Applicant: Sony Corporation
    Inventors: Hirofumi Nakamura, Shota Nishi, Yoichi Negoro, Hidehiko Takanashi
  • Publication number: 20140146383
    Abstract: An electrophoretic device includes: a porous layer including a first fibrous structure and a non-electrophoretic particle held in the first fibrous structure; an electrophoretic particle configured to move through a space formed at the porous layer; a second fibrous structure covering the porous layer; and a partition provided from the porous layer to the second fibrous structure.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 29, 2014
    Applicant: Sony Corporation
    Inventors: Atsuhito Yasui, Hidehiko Takanashi, Ken Kobayashi, Yuriko Kaino, Masakazu Mitsugi, Aya Shuto
  • Patent number: 8711469
    Abstract: An electrophoretic element includes: an electrophoretic particle; a porous layer formed of a fibrous structure containing a non-migrating particle having optical reflective characteristics different from those of the electrophoretic particle and having a plurality of pores; and a partition that is partially adjacent to the porous layer and defines a space for accommodating the electrophoretic particle. An area rate of the pores per unit area of the porous layer is small in an adjacent region where the partition is adjacent to the porous layer compared with in a non-adjacent region where the partition is not adjacent to the porous layer.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: April 29, 2014
    Assignee: Sony Corporation
    Inventors: Atsuhito Yasui, Hidehiko Takanashi, Ken Kobayashi, Ryo Kasegawa, Aya Shuto
  • Patent number: 8634128
    Abstract: An electrophoretic element includes an electrophoretic particle, and a porous layer formed of a fibrous structure having a non-electrophoretic particle with different optical reflection characteristics from optical reflection characteristics of the electrophoretic particle. A difference ?1 (=A?B) between a solubility parameter value A of the fibrous structure and a solubility parameter value B of a particle surface of the electrophoretic particle is 2 or more and 5.2 or less.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: January 21, 2014
    Assignee: Sony Corporation
    Inventors: Hidehiko Takanashi, Ken Kobayashi, Aya Shuto
  • Publication number: 20140002889
    Abstract: An electrophoresis device includes: a plurality of electrophoretic particles included in insulating liquid and configured of a first particle and a second particle, in which the first particle and the second particle have respective charging characteristics that are different from each other; and a porous layer included in the insulating liquid and formed of a fibrous structure.
    Type: Application
    Filed: June 20, 2013
    Publication date: January 2, 2014
    Applicant: Sony Corporation
    Inventors: Yuriko Kaino, Ken Kobayashi, Aya Shuto, Hidehiko Takanashi
  • Publication number: 20130335810
    Abstract: There are provided an electrophoresis device and a display unit which are capable of realizing high contrast. The electrophoresis device includes a plurality of electrophoretic particles and a porous layer that are contained in an insulating liquid, the porous layer being formed using a fibrous structure including a plurality of non-migrating particles. An average particle size of the electrophoretic particles is equal to or less than one-fifth of an average pore size of the porous layer.
    Type: Application
    Filed: June 12, 2013
    Publication date: December 19, 2013
    Applicant: Sony Corporation
    Inventors: Ken Kobayashi, Hidehiko Takanashi, Yuriko Kaino, Aya Shuto
  • Publication number: 20130321896
    Abstract: An electrophoretic device includes: in an insulating liquid, a plurality of electrophoretic particles; and a porous layer formed of a fibrous structure, the fibrous structure including a plurality of non-migrating particles. The fibrous structure is configured of superposed fibers extending in an identical direction or different directions, and includes a cross-linking section in which the fibers are linked to each other in part or all of contact points between the fibers.
    Type: Application
    Filed: May 22, 2013
    Publication date: December 5, 2013
    Applicant: Sony Corporation
    Inventors: Aya Shuto, Hidehiko Takanashi, Ken Kobayashi, Yuriko Kaino
  • Patent number: 8570481
    Abstract: A liquid crystal material in which liquid crystal molecules have uniform alignment state is provided. A liquid crystal layer containing a liquid crystal material is included between a TFT array substrate and an opposed substrate. The liquid crystal material has a phase system continuously showing an isotropic phase, a nematic phase, and a smectic ‘A’ phase in this order as temperature changes from higher state to lower state and shows electroclinic effect in the smectic ‘A’ phase. As the liquid crystal material is heated (temperature is increased), the nematic phase is shown after the smectic ‘A’ phase without other phase in between, and the isotropic phase is shown after the nematic phase without other phase in between. Since the alignment state of the liquid crystal molecules becomes uniform, the transmittance is precisely controlled.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: October 29, 2013
    Assignee: Sony Corporation
    Inventors: Hidehiko Takanashi, Ken Kobayashi, Rika Kotake, Aya Shuto
  • Publication number: 20130258450
    Abstract: An electrophoretic element includes: an electrophoretic particle; a porous layer formed of a fibrous structure containing a non-migrating particle having optical reflective characteristics different from those of the electrophoretic particle and having a plurality of pores; and a partition that is partially adjacent to the porous layer and defines a space for accommodating the electrophoretic particle. An area rate of the pores per unit area of the porous layer is small in an adjacent region where the partition is adjacent to the porous layer compared with in a non-adjacent region where the partition is not adjacent to the porous layer.
    Type: Application
    Filed: May 22, 2013
    Publication date: October 3, 2013
    Inventors: Atsuhito Yasui, Hidehiko Takanashi, Ken Kobayashi, Ryo Kasegawa, Aya Shuto
  • Publication number: 20130250398
    Abstract: Fine particles for image display having excellent properties and displaying images in black on the basis of electrophoresis are provided. Fine particles for image display are dispersed (suspended) in an electrophoretic dispersion liquid sealed between two opposing substrates and contain porous carbon materials having values of specific surface area determined by the nitrogen BET method of not less than 100 m2/g and pore volume determined by the MP method of not less than 0.1 cm3/g or those having values of specific surface area determined by the nitrogen BET method of not less than 100 m2/g and at least one peak at not more than 10 nm in pore size distribution obtained by the non-localized density functional theory method.
    Type: Application
    Filed: June 2, 2011
    Publication date: September 26, 2013
    Applicant: SONY CORPORATION
    Inventors: Hidehiko Takanashi, Yuriko Kaino, Aya Shuto, Ken Kobayashi, Shinichiro Yamada, Seiichiro Tabata, Hironori Iida, Machiko Minatoya, Shun Yamanoi, Masakazu Mitsugi
  • Patent number: 8542431
    Abstract: An electrophoretic device includes an electrophoretic particle, a porous layer formed of a fibrous structure containing a non-electrophoretic particle having optical reflection characteristics different from optical reflection characteristics of the electrophoretic particle, and a pair of electrodes arranged with the porous layer in between. The porous layer is adjacent to one or both of the pair of electrodes.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: September 24, 2013
    Assignee: Sony Corporation
    Inventors: Aya Shuto, Hidehiko Takanashi, Ken Kobayashi, Atsuhito Yasui, Ryo Kasegawa
  • Patent number: 8542430
    Abstract: An electrophoretic device includes: an electrophoretic particle; a porous layer formed of a fibrous structure containing a non-electrophoretic particle having optical reflection characteristics different from those of the electrophoretic particle; and a dividing wall adjacent to the porous layer. The electrophoretic particle, the porous layer, and the dividing wall are in an insulating liquid. Volume resistivity of the fibrous structure is larger than volume resistivity of the insulating liquid, and volume resistivity of the dividing wall is larger than the volume resistivity of the insulating liquid.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: September 24, 2013
    Assignee: Sony Corporation
    Inventors: Atsuhito Yasui, Hidehiko Takanashi, Ken Kobayashi, Ryo Kasegawa, Aya Shuto
  • Patent number: 8482844
    Abstract: An electrophoretic element includes: an electrophoretic particle; a porous layer formed of a fibrous structure containing a non-migrating particle having optical reflective characteristics different from those of the electrophoretic particle and having a plurality of pores; and a partition that is partially adjacent to the porous layer and defines a space for accommodating the electrophoretic particle. An area rate of the pores per unit area of the porous layer is small in an adjacent region where the partition is adjacent to the porous layer compared with in a non-adjacent region where the partition is not adjacent to the porous layer.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: July 9, 2013
    Assignee: Sony Corporation
    Inventors: Atsuhito Yasui, Hidehiko Takanashi, Ken Kobayashi, Ryo Kasegawa, Aya Shuto