Patents by Inventor Takeyoshi Ushiki

Takeyoshi Ushiki 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: 6704075
    Abstract: A color filter substrate 8 having a plurality of pixels D1 includes a reflecting layer 4 composed of a metal film formed on a substrate 2, and any one of blue, green, and red color filter layers 10, 12, and 14 formed on the reflecting layer 4 at a position corresponding to each pixel D1. A metal complex of phthalocyanine is applied to the surface of the reflecting layer 4 at the interface with each color filter layer.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: March 9, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Keiji Takizawa, Yoshio Yamaguchi, Mutsumi Matsuo, Takeyoshi Ushiki
  • Patent number: 6663760
    Abstract: A non-aqueous electrolyte comprises an organic solvent and a solute, and also has an electrolytic conductivity that is greater than or equal to 1 mS/cm but less than or equal to 100 mS/cm. This solute preferably includes at least one of a carboxylate and a salt of inorganic oxoacid. In addition, the non-aqueous electrolyte preferably comprises water in a proportion of 1 to 10 wt %. In an MIM nonlinear element (20), an insulated film (24) is formed by anodic oxidation using the above non-aqueous electrolyte. In addition, the insulated film comprises at least one of carbon atoms and atoms of families 3 to 7 that were originally the central atoms of the salt of inorganic oxoacid, and has a relative permittivity of 10 to 25. With this MIM nonlinear element, the capacitance is sufficiently small, the steepness of the voltage-current characteristic is sufficiently large, and also the resistance is sufficiently uniform over a wide area.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: December 16, 2003
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Inoue, Takeyoshi Ushiki, Takumi Seki, Makoto Ue, Fumikazu Mizutani, Sachie Takeuchi
  • Patent number: 6614498
    Abstract: Color layers R, G, and B of a color filter are arranged in a delta pattern. A data line (212) for applying a voltage to the sub-pixels is connected, through TFD (220), to pixel electrodes (234) of the sub-pixels respectively corresponding to the three colors in a fixed order in a periodic pattern, and pixel electrodes (234) commonly connected to a single data line (212) are arranged to the same side of the data line (212). The potential of the sub-pixels for a particular color are equally influenced by the potential of the sub-pixels of other colors.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: September 2, 2003
    Assignee: Seiko Epson Corporation
    Inventors: Chihiro Tanaka, Tadashi Tsuyuki, Yoshio Yamaguchi, Takeyoshi Ushiki, Takashi Inami
  • Patent number: 6563555
    Abstract: An MIM nonlinear device having a large nonlinearity coefficient that represents the sharpness of the voltage-current characteristic, a liquid crystal display panel with high image-quality that uses this device, and a manufacturing method of said MIM nonlinear device are provided. The MIM nonlinear device contains a first conductive film 22, an insulating film 24, and a second conductive film 26 laminated on a substrate 30. The insulating film 24 may contain water, and in the insulating film, in a thermal desorption spectrum, a peak derived from water in the insulating film is 225-300° C. Further, in said thermal desorption spectrum, the number of molecules calculated from the area of the peak derived from the water is preferably 5×1014/cm2 or more.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: May 13, 2003
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Inoue, Yasushi Takano, Takeyoshi Ushiki, Takumi Seki
  • Publication number: 20030063041
    Abstract: A liquid crystal device 60A includes a main display 1A and a sub-display 2A. Signals are supplied from a drive circuit 7 to first electrodes 15a and second electrodes 15b included in the main display IA and third electrodes 15c and fourth electrodes 15d included in the sub-display 2A. Some of the first electrodes 15a of the main display 1A are electrically connected to the third electrodes 15c of the sub-display 2A.
    Type: Application
    Filed: September 20, 2002
    Publication date: April 3, 2003
    Inventors: Takeshi Kurashima, Kogo Endo, Akira Sato, Takeyoshi Ushiki
  • Publication number: 20020135715
    Abstract: A liquid crystal display device comprises a pair of substrates (11, 12) bonded to each other by a sealing material (13) in the form of a frame provided therebetween, liquid crystal (14) held between the pair of substrates; a reflective layer (111) formed on one (11) of the substrates, and an alignment film (116) formed over the reflective layer (111) at the liquid crystal side. The surface of said one (11) of the substrates has a roughened area (11b) which is roughened and a flat area (11a) which is flat and surrounds the roughened area (11b). The alignment film (116) is formed in the roughened area (11b), and the sealing material (13) is formed in the flat area (11a).
    Type: Application
    Filed: September 13, 2001
    Publication date: September 26, 2002
    Inventors: Naonori Miwa, Keiji Takizawa, Takeyoshi Ushiki, Yoshio Yamaguchi
  • Publication number: 20020093601
    Abstract: The present invention provides a MIM type non-linear element in which the capacitance is sufficiently small and in which little changes over time are exhibited in the current-voltage characteristics, a liquid crystal display panel with high image quality using the MIM type non-linear element, and a method of manufacturing the MIM type non-linear element. The MIM type non-linear element includes a first conductive film, an insulation film and a second conductive film, which are laminated on a substrate. The insulation film has a relative dielectric constant of 25.5 or less, preferably 24.0-25.5. In elementary analysis by SIMS, a hydrogen spectrum of the boundary region between the first conductive film and the insulation film has a width of 10 nm or more in the depth direction at an intensity of one tenth of the peak intensity. The first conductive film of the MIM type non-linear element shows a peak temperature of 300° C. or higher in a thermal desorption spectroscopy of hydrogen.
    Type: Application
    Filed: March 13, 2002
    Publication date: July 18, 2002
    Applicant: Seiko Epson Corporation
    Inventors: Takashi Inoue, Yasushi Takano, Hideaki Naono, Wataru Ito, Tsutomu Asakawa, Takeyoshi Ushiki
  • Patent number: 6384880
    Abstract: The present invention provides a MIM type non-linear element in which the capacitance is sufficiently small and in which little changes over time are exhibited in the current-voltage characteristics, a liquid crystal display panel with high image quality using the MIM type non-linear element, and a method of manufacturing the MIM type non-linear element. The MIM type non-linear element includes a first conductive film, an insulation film and a second conductive film, which are laminated on a substrate. The insulation film has a relative dielectric constant of 25.5 or less, preferably 24.0-25.5. In elementary analysis by SIMS, a hydrogen spectrum of the boundary region between the first conductive film and the insulation film has a width of 10 nm or more in the depth direction at an intensity of one tenth of the peak intensity. The first conductive film of the MIM type non-linear element shows a peak temperature of 300° C. or higher in a thermal desorption spectroscopy of hydrogen.
    Type: Grant
    Filed: January 5, 1998
    Date of Patent: May 7, 2002
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Inoue, Yasushi Takano, Hideaki Naono, Wataru Ito, Tsutomu Asakawa, Takeyoshi Ushiki
  • Patent number: 6341005
    Abstract: The energizing patterns (12A) are composed of wiring pattern sections (12A-1) formed so as to be elongated along the region for forming the wiring layers (12), connection pattern sections (12A-2) connecting the adjoining wiring patterns for each pixel region and striped joint pattern sections (12A-3) for connecting the wiring pattern sections (12A-1) outside of the prospective liquid crystal display region in which pixel regions are arranged. Element constituting sections (12A-2a) including the portions to be formed into connection layers (13) are formed in the connection pattern sections (12A-2). The portions to be formed into the connection layers (13) are formed into a protruding peninsula shape in this element constituting sections (12A-2a). The present invention can prevent defective anodic oxidation due to cutting off or imperfect configuration of the energizing pattern (12A), as well as reducing the process damage of the active element.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: January 22, 2002
    Assignee: Seiko Epson Corporation
    Inventors: Chihiro Tanaka, Mutsumi Matsuo, Yoshio Yokouchi, Takeyoshi Ushiki
  • Publication number: 20010053452
    Abstract: A non-aqueous electrolyte comprises an organic solvent and a solute, and also has an electrolytic conductivity that is greater than or equal to 1 mS/cm but less than or equal to 100 mS/cm. This solute preferably includes at least one of a carboxylate and a salt of inorganic oxoacid. In addition, the non-aqueous electrolyte preferably comprises water in a proportion of 1 to 10 wt %. In an MIM nonlinear element (20), an insulated film (24) is formed by anodic oxidation using the above non-aqueous electrolyte. In addition, the insulated film comprises at least one of carbon atoms and atoms of families 3 to 7 that were originally the central atoms of the salt of inorganic oxoacid, and has a relative permittivity of 10 to 25. With this MIM nonlinear element, the capacitance is sufficiently small, the steepness of the voltage-current characteristic is sufficiently large, and also the resistance is sufficiently uniform over a wide range of voltages.
    Type: Application
    Filed: September 15, 1998
    Publication date: December 20, 2001
    Inventors: TAKASHI INOUE, TAKEYOSHI USHIKI, TAKUMI SEKI, MAKOTO UE, FUMIKAZU MIZUTANI, SACHIE TAKEUCHI
  • Publication number: 20010033441
    Abstract: A color filter substrate 8 having a plurality of pixels D1 includes a reflecting layer 4 composed of a metal film formed on a substrate 2, and any one of blue, green, and red color filter layers 10, 12, and 14 formed on the reflecting layer 4 at a position corresponding to each pixel D1. A metal complex of phthalocyanine is applied to the surface of the reflecting layer 4 at the interface with each color filter layer.
    Type: Application
    Filed: February 6, 2001
    Publication date: October 25, 2001
    Inventors: Keiji Takizawa, Yoshio Yamaguchi, Mutsumi Matsuo, Takeyoshi Ushiki
  • Patent number: 6285419
    Abstract: An MIM nonlinear device having a large nonlinearity coefficient that represents the sharpness of the voltage-current characteristic, a liquid crystal display panel with high image-quality that uses this device, and a manufacturing method of said MIM nonlinear device are provided. The MIM nonlinear device contains a first conductive film 22, an insulating film 24, and a second conductive film 26 laminated on a substrate 30. The insulating film 24 may contain water, and in the insulating film, in a thermal desorption spectrum, a peak derived from water in the insulating film is 225-300° C. Further, in said thermal desorption spectrum, the number of molecules calculated from the area of the peak derived from the water is preferably 5×1014/cm2 or more.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: September 4, 2001
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Inoue, Yasushi Takano, Takeyoshi Ushiki, Takumi Seki
  • Patent number: 5396353
    Abstract: An opto-electrical apparatus, such as, a liquid crystal display device, comprises a pixel electrode driving element a first conductor, an insulator and a second conductor formed in stacked sequence on the substrate with the insulator comprising a thicker barrier layer atop the first conductor compared to the side portions thereof. The second conductor is formed in two locations on the insulating side portions of the insulator as well as a portion of the top surface comprising the barrier layer. As a result, a pair of nonlinear devices are formed relative to the same insulator and are connected between a pixel electrode and inter-device interconnect so that an electrically aligned, series connected pair of MIM devices with opposite polarity formation both having nonlinear current/voltage characteristics.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: March 7, 1995
    Assignee: Seiko Epson Corporation
    Inventors: Kotoyoshi Takahashi, Takeyoshi Ushiki
  • Patent number: 5246468
    Abstract: The invention is concerned with a production process for a lateral metal-insulator-metal (MIM) device for use in liquid crystal displays. A conductive pattern is formed on a transparent substrate, followed by formation of a barrier layer insulator on top of the conductive pattern. Positive photoresist is applied and light is passed through the back side of the substrate. The photoresist is developed and the barrier layer insulator is etched until the sides of the conductive pattern are exposed. A thin insulator layer is formed on the exposed sides. The lateral MIM structure is completed with the formation of a second conductive layer, or electrode, over the thin insulator. With the method of this invention, breakage of the electrode does not occur because the underlying conductor is not undercut from etching, as occurs in prior art MIM production processes.
    Type: Grant
    Filed: July 5, 1991
    Date of Patent: September 21, 1993
    Assignee: Seiko Epson Corporation
    Inventors: Kotoyoshi Takahashi, Takeyoshi Ushiki