Patents by Inventor Masayuki Yazaki

Masayuki Yazaki 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: 20190359032
    Abstract: A radiant heater device has an electrode embedded in a substrate part and a plurality of heating parts. The electrodes are formed by material that has low specific resistance. An area occupied by the electrode is restricted. The heating parts are formed by material having high specific resistance in order to generate heat so that radiation is produced. The electrode and the heating part are electrically connected within the substrate part. The plurality of heating parts are arranged in parallel between a pair of electrodes. The electrodes and the heating parts are formed in a film-like shape, and the thermal capacity is reduced. As a result, a temperature of the heating parts rises promptly in response to a turning on of power. In addition, the temperature of the heating parts promptly decreases when an object comes into contact therewith.
    Type: Application
    Filed: August 12, 2019
    Publication date: November 28, 2019
    Inventors: Yasuhiro SAGOU, Takuya KATAOKA, Asami OKAMOTO, Manabu MAEDA, Koji OTA, Masayuki AOYAMA, Kouji KONDOH, Motoki SHIMIZU, Yoshihiko SHIRAISHI, Yoshitarou YAZAKI, Keita SAITOU
  • Patent number: 7061564
    Abstract: The invention provides a liquid crystal device including a first substrate and a second substrate opposing each other, a plurality of pixel electrodes disposed on the first substrate in a matrix, drive voltages having opposite polarities with respect to a reference voltage being applied to adjacent pixels, a common electrode disposed on the second substrate, and an electro-optical substance disposed between the first substrate and the second substrate. The device can also include a second alignment layer disposed on the second substrate and subjected to a uniform alignment operation, a first alignment layer formed of an alignment material on the first substrate subjected to alignment operations so that the alignment operation at strip areas and the alignment operation at areas other than the strip areas are different.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: June 13, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Kazunari Sakamoto, Masayuki Yazaki
  • Publication number: 20050007528
    Abstract: The invention provides a liquid crystal device including a first substrate and a second substrate opposing each other, a plurality of pixel electrodes disposed on the first substrate in a matrix, drive voltages having opposite polarities with respect to a reference voltage being applied to adjacent pixels, a common electrode disposed on the second substrate, and an electro-optical substance disposed between the first substrate and the second substrate. The device can also include a second alignment layer disposed on the second substrate and subjected to a uniform alignment operation, a first alignment layer formed of an alignment material on the first substrate subjected to alignment operations so that the alignment operation at strip areas and the alignment operation at areas other than the strip areas are different.
    Type: Application
    Filed: June 4, 2004
    Publication date: January 13, 2005
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kazunari Sakamoto, Masayuki Yazaki
  • Patent number: 6261650
    Abstract: A polymer dispersed liquid crystal (PDLC) display element for use in an electronic apparatus wherein the display element operates in a PDLC mode or reverse PDLC mode providing for reduction of visual display haze, improved display contrast. The particular medium includes a liquid crystal portion and a polymer portion and may include a chiral component. In cases where visual display haze and contract is a particular problem in the utility of the reverse PDLC display element, such as in the case where the display element is combined with a solar battery, a sufficient amount of dichroic dye is added to the liquid crystal portion of the medium, and, further, a compound showing no fluorescence emission with respect to a liquid crystal portion, or a polymer or a chiral polymer precursor portion of the medium, is employed.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: July 17, 2001
    Assignee: Seiko Epson Corporation
    Inventors: Hidekazu Kobayashi, Eiji Chino, Masayuki Yazaki, Hidehito Iisaka
  • Patent number: 6025895
    Abstract: On the substrate (108) are made reflecting type picture element electrodes (107), of Cr, and on substrate 101 are made transference picture element electrodes (102), of ITO. On both substrates (108, 101) parallel alignment films (106, 103), consisting of polyimide alignment films, are each made, but rubbing treatment is not administered. Between the substrates (108. 101) polymer dispersion liquid crystal, in which liquid crystal (105) and polymer (104) are in a state of mutual orientation dispersion, is placed. Liquid crystal (105) is parallel oriented randomly near the substrate surfaces, and twisted approximately 90.degree. between the substrates (101, 108). Also, the orientation domains from the liquid crystal random orientation are evenly multidomained at the level of approximately 1-3 .mu.m. Because they are randomly oriented in this way, directivity of scatter is improved, and operation voltage is decreased.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: February 15, 2000
    Assignee: Seiko Epson Corporation
    Inventors: Masayuki Yazaki, Hidekazu Kobayashi, Shuhei Yamada, Hidehito Iisaka, Yutaka Tsuchiya, Eiji Chino
  • Patent number: 5993689
    Abstract: A polymer dispersed liquid crystal (PDLC) display element for use in an electronic apparatus wherein the display element operates in a PDLC mode or reverse PDLC mode providing for reduction of visual display haze, improved display contrast. The particular medium includes a liquid crystal portion and a polymer portion and may include a chiral component. In cases where visual display haze and contract is a particular problem in the utility of the reverse PDLC display element, such as in the case where the display element is combined with a solar battery, a sufficient amount of dichroic dye is added to the liquid crystal portion of the medium, and, further, a compound showing no fluorescence emission with respect to a liquid crystal portion, or a polymer or a chiral polymer precursor portion of the medium, is employed.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: November 30, 1999
    Assignee: Seiko Epson Corporation
    Inventors: Hidekazu Kobayashi, Eiji Chino, Masayuki Yazaki, Hidehito Iisaka
  • Patent number: 5972240
    Abstract: Liquid crystal composite materials containing organic compounds enable the lowering of the drive voltage of liquid crystal display devices and of liquid crystal display devices of a polymer-dispersion type. The liquid crystal composite materials can be used in liquid crystal display devices and PDLC devices with a scattering layer having a liquid crystal and a polymer between the electrodes. A ter phenyl derivative can also favorably be used in the liquid crystal composite materials and in the liquid crystal display devices.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: October 26, 1999
    Assignee: Seiko Epson Corporation
    Inventors: Hidekazu Kobayashi, Shuhei Yamada, Eiji Chino, Masayuki Yazaki, Hidehito Iisaka, Yutaka Tsuchiya
  • Patent number: 5872607
    Abstract: A polymer dispersed liquid crystal display device includes a top substrate and a bottom substrate. First electrodes are provided on the top substrate and second electrodes are provided on the bottom substrate. Orientation are provided on the top and the bottom substrates. The orientation films are respectively rubbed in predetermined directions. A polymer material, a liquid crystal material and a predetermined amount of a chiral agent are interposed between the top and bottom substrates. The polymer material is separated from the liquid crystal material through irradiation by ultraviolet rays. The liquid crystal material and polymer material have a mutually orientated and dispersed structure. The liquid crystal material has a predetermined twisting angle in a predetermined twist direction. As a result, light is scattered when substantially normal to the liquid crystal display device and the surface of the top substrate.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: February 16, 1999
    Assignee: Seiko Epson Corporation
    Inventors: Masayuki Yazaki, Hidekazu Kobayashi, Shuhei Yamada, Hidehito Iisaka, Yutaka Tsuchiya, Eiji Chino
  • Patent number: 5867237
    Abstract: Reflective pixels composed of chromium are formed on a substrate and a polyimide film is provided on the substrate. Rubbing in two directions is conducted through a mask rubbing process. Transparent pixel electrodes, composed of indium tin oxide (ITO), are formed on a substrate, a polyimide film is formed on another substrate, and orientation processing is conducted in the same direction over the entire surface. A polymer dispersion liquid crystal is provided between these two substrates. The liquid crystal does not contain a chiral agent. The liquid crystal is divided into a left twist area having a left twist orientation state and a right twist area having a right twist orientation state. Between the substrates, the polymer and the liquid crystal are mutually orientation dispersed.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: February 2, 1999
    Assignee: Seiko Epson Corporation
    Inventors: Masayuki Yazaki, Hidekazu Kobayashi, Shuhei Yamada, Hidehito Iisaka, Yutaka Tsuchiya, Eiji Chino
  • Patent number: 5686017
    Abstract: A polymer dispersed liquid crystal (PDLC) display element for use in an electronic apparatus wherein the display element operates in a PDLC mode or reverse PDLC mode providing for reduction of visual display haze, improved display contrast. The particular medium includes a liquid crystal portion and a polymer portion and may include a chiral component. In cases where visual display haze and contract is a particular problem in the utility of the reverse PDLC display element, such as in the case where the display element is combined with a solar battery, a sufficient amount of dichroic dye is added to the liquid crystal portion of the medium, and, further, a compound showing no fluorescence emission with respect to a liquid crystal portion, or a polymer or a chiral polymer precursor portion of the medium, is employed.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: November 11, 1997
    Assignee: Seiko Epson Corporation
    Inventors: Hidekazu Kobayashi, Eiji Chino, Masayuki Yazaki, Hidehito Iisaka