Patents by Inventor Yasushi Kawata

Yasushi Kawata 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).

  • Patent number: 5653845
    Abstract: A liquid crystal display device and method of construction, includes a first substrate and a second substrate each having a first surface, and a liquid crystal material provided between the first surfaces of the first and second substrates, and steps of forming a controlling film for controlling an alignment of liquid crystal molecules to adhere to the first surface of the first substrate; peeling the controlling film off of the first substrate; positioning the first and the second substrates with the respective first surfaces confronting each other; and providing liquid crystal material between the first and second substrates.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: August 5, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yasushi Kawata
  • Patent number: 5587819
    Abstract: A reflective direct-view type display device including a first substrate having two major surfaces and electrode provided on a first major surface, a second substrate having two major surfaces and color filter layers and pixel electrodes provided on a first major surface, a light-scattering medium interposed between the first and second substrates positioned with the electrode opposes the pixel electrodes, and at least one color filter layer provided on the first major surface of the first substrate and apposing at least one of the color filter layers provided on the first major surface of the second substrate. The display can produce high-luminance colors, by using external light at high efficiency and with a low consumption of electric power.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: December 24, 1996
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuyuki Sunohara, Rei Hasegawa, Hiroyuki Nagata, Shinichi Sanada, Yasushi Kawata
  • Patent number: 5434687
    Abstract: A liquid crystal display device comprises a substrate, two electrode-attached substrates formed by sequentially superposing electrode layers and orientation layers on the substrate and disposed so as to oppose the orientation layers to each other across a gap, and a liquid crystal composition placed in the gap and consequently interposed between the two electrode-attached substrates, which liquid crystal display device is characterized in that the orientation layers is furnished with multiply divided liquid crystal orientation areas and the orientation areas severally have directions of orientation set either in a radial pattern or in the shape of concentric rings.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: July 18, 1995
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasushi Kawata, Kazuyuki Sunohara, Yuko Kizu, Masanori Sakamoto