Patents by Inventor Tomomi Kawase

Tomomi Kawase 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: 20020105688
    Abstract: The present invention provides a system which shortens the scanning time with an ink jet head for forming a pattern of filter elements of a color filter, picture element pixels of an electroluminescence (EL) device, or the like. An apparatus for producing a color filter can include a plurality of filter elements arranged on a substrate. The apparatus can further include a plurality of heads each having a nozzle row having a plurality of nozzles arranged, an ink supply device for supplying a filter element material to the heads, a carriage supporting the heads arranged thereon, a main scanning driving device for moving the carriage by main scanning in the X direction, and a sub-scanning driving device for moving the carriage by sub-scanning in the Y direction. The carriage supports the plurality of heads each of which is inclined at an in-plane inclination angle &thgr;.
    Type: Application
    Filed: January 14, 2002
    Publication date: August 8, 2002
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoru Katagami, Hisashi Aruga, Hiroshi Kiguchi, Tatsuya Ito, Tomomi Kawase, Masaharu Shimizu
  • Publication number: 20020097356
    Abstract: The present invention provides a transflective liquid crystal device in which color display can be made uniform over the display surface in both the reflective display mode and the transmissive display mode. The liquid crystal device can include a pair of substrates which sandwich liquid crystal, a light reflecting film formed on the substrate, and a color filter formed on the light reflecting film. The color filter can include a partitioning member, which divides the surface of the substrate into a plurality of sections, and subpixels which are individually formed in the sections. The light reflecting film is provided with openings formed at regions corresponding to the thickest parts of the subpixels, openings formed at regions corresponding to central parts of the section, openings which extend in longitudinal direction of the rectangular sections, or openings formed in the shape corresponding to the thickness distribution of the subpixels.
    Type: Application
    Filed: January 14, 2002
    Publication date: July 25, 2002
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tomomi Kawase, Tatsuya Ito, Hisashi Aruga, Satoru Katagami
  • Publication number: 20020081503
    Abstract: The invention makes uniform, in a plane, optical properties of optical members, such as the distribution properties of light transmission of a color filter, the color display properties of a liquid crystal device, and the light emission properties of an EL luminescent plane. During main scanning of color filter formation areas of a board in the X direction with an ink jet head having a nozzle row formed of a plurality of nozzles arranged in a row, a filter material is selectively discharged from the plurality of the nozzles to each of filer element areas arranged in a dot matrix to form filter elements, producing a color filter.
    Type: Application
    Filed: December 18, 2001
    Publication date: June 27, 2002
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tomomi Kawase, Hisashi Aruga, Satoru Katagami, Masaharu Shimizu, Hiroshi Kiguchi
  • Publication number: 20020067400
    Abstract: The present invention provides a method for making a color filter having a plurality of filter elements aligned in a dot-matrix on a substrate. The method has a first-scanning step of moving the inkjet head having a nozzle line including a plurality of nozzles relative to the substrate while selectively discharging a filter material from the plurality of nozzles so as to form filter elements on filter element forming regions of the substrate and a second-scanning step of moving the inkjet head by a second-scanning distance &dgr; in a second-scanning direction. The plurality of nozzles are divided into a plurality of groups and the first-scanning step and the second-scanning step are repeated so that all the nozzle groups scan the same section of the substrate.
    Type: Application
    Filed: November 20, 2001
    Publication date: June 6, 2002
    Applicant: Seiko Epson Corporation
    Inventors: Tomomi Kawase, Hisashi Aruga, Satoru Katagami, Masaharu Shimizu, Hiroshi Kiguchi
  • Publication number: 20020060757
    Abstract: A manufacturing method of an active matrix substrate which can prevent the complexity of manufacturing processes, widens the range of material choice and allows high manufacturing yield, and a manufacturing method of a liquid crystal display using such active matrix substrate. Conductive colored layers (606 to 608) functioning as pixel electrodes and color filters are formed by a process of discharging, by an ink jet method, a mixed ink of coloring material and conductive material to the formation area of a pixel electrode to be connected electrically to an active element (602).
    Type: Application
    Filed: October 16, 2001
    Publication date: May 23, 2002
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hiroshi Kiguchi, Satoru Katagami, Tomomi Kawase, Hisashi Aruga, Masaharu Shimizu