Patents by Inventor Takehide Kishimoto

Takehide Kishimoto 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: 7312006
    Abstract: The present invention is to provide a pigment dispersion composition for a color filter having the excellent pigment dispersing property and dispersion stability, good developing property and reactivity, and an extremely small residue generation amount after development, a production method capable of stably producing such a pigment dispersion composition, and a color filter for a display having a high transmittance and a low light scattering property. A pigment dispersion composition for a color filter containing at least a pigment, a pigment dispersing agent, a binder resin, a reactive compound, and a solvent, wherein the binder resin is a compound having a pigment adsorbing block containing a pigment adsorbing group and not containing a reactive group, and a reactive block containing a reactive group and not containing a pigment adsorbing group, is provided.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: December 25, 2007
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hideaki Yamagata, Takehide Kishimoto, Takashi Nishimoto
  • Publication number: 20070065736
    Abstract: The present invention is to provide a pigment dispersion composition for a color filter having the excellent pigment dispersing property and dispersion stability, good developing property and reactivity, and an extremely small residue generation amount after development, a production method capable of stably producing such a pigment dispersion composition, and a color filter for a display having a high transmittance and a low light scattering property. A pigment dispersion composition for a color filter containing at least a pigment, a pigment dispersing agent, a binder resin, a reactive compound, and a solvent, wherein the binder resin is a compound having a pigment adsorbing block containing a pigment adsorbing group and not containing a reactive group, and a reactive block containing a reactive group and not containing a pigment adsorbing group, is provided.
    Type: Application
    Filed: September 14, 2006
    Publication date: March 22, 2007
    Inventors: Hideaki Yamagata, Takehide Kishimoto, Takashi Nishimoto
  • Patent number: 7166394
    Abstract: The present invention is to provide a pigment dispersion composition for a color filter having the excellent pigment dispersing property and dispersion stability, good developing property and reactivity, and an extremely small residue generation amount after development, a production method capable of stably producing such a pigment dispersion composition, and a color filter for a display having a high transmittance and a low light scattering property. A pigment dispersion composition for a color filter containing at least a pigment, a pigment dispersing agent, a binder resin, a reactive compound, and a solvent, wherein the binder resin is a compound having a pigment adsorbing block containing a pigment adsorbing group and not containing a reactive group, and a reactive block containing a reactive group and not containing a pigment adsorbing group, is provided.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: January 23, 2007
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hideaki Yamagata, Takehide Kishimoto, Takashi Nishimoto
  • Patent number: 6733935
    Abstract: Provided is a set material of photoinitiators which prevent a reduction in the light transmittance of each colored resist. The colored resist material set comprises at least colored resist materials having three colors and consisting of a red resist material, a green resist material and a blue resist material, each resist material containing a reactive monomer, a photoinitiator and a dye and/or a pigment, wherein the photoinitiator contained in the red resist material has a photoabsorption region on the side of wavelengths shorter than 570 nm, the photoinitiator contained in the green resist material has a photoabsorption region on the side of wavelengths shorter than 460 nm, and the photoinitiator contained in the blue resist material has a photoabsorption region on the side of wavelengths shorter than 400 nm, each photoinitiator using at least two or more photoinitiators.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: May 11, 2004
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Takehide Kishimoto, Miho Watanabe
  • Publication number: 20030189682
    Abstract: The present invention is to provide a pigment dispersion composition for a color filter having the excellent pigment dispersing property and dispersion stability, good developing property and reactivity, and an extremely small residue generation amount after development, a production method capable of stably producing such a pigment dispersion composition, and a color filter for a display having a high transmittance and a low light scattering property. A pigment dispersion composition for a color filter containing at least a pigment, a pigment dispersing agent, a binder resin, a reactive compound, and a solvent, wherein the binder resin is a compound having a pigment adsorbing block containing a pigment adsorbing group and not containing a reactive group, and a reactive block containing a reactive group and not containing a pigment adsorbing group, is provided.
    Type: Application
    Filed: December 11, 2002
    Publication date: October 9, 2003
    Inventors: Hideaki Yamagata, Takehide Kishimoto, Takashi Nishimoto
  • Patent number: 6600532
    Abstract: An object of the present invention is to provide a color filter for reliably preventing the liquid crystal layer from being contaminated with ionic materials, as well as a liquid crystal display excellent in display qualities. To achieve the object described above, the present invention provides a color filter comprises a substrate, a resin colored layer consisting of a plurality of colors formed in a predetermined pattern on the substrate, and a common transparent electrode layer, said resin colored layer bringing about a voltage holding ratio of 80% or more and a residual DC (&Dgr;E) of 0.5 V or less in a liquid crystal subjected to treatment for extraction of impurities.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: July 29, 2003
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Takehide Kishimoto, Hideaki Yamagata, Takashi Nishimoto
  • Patent number: 6514644
    Abstract: The present invention is to provide a pigment dispersion composition for a color filter having the excellent pigment dispersing property and dispersion stability, good developing property and reactivity, and an extremely small residue generation amount after development, a production method capable of stably producing such a pigment dispersion composition, and a color filter for a display having a high transmittance and a low light scattering property. A pigment dispersion composition for a color filter containing at least a pigment, a pigment dispersing agent, a binder resin, a reactive compound, and a solvent, wherein the binder resin is a compound having a pigment adsorbing block containing a pigment adsorbing group and not containing a reactive group, and a reactive block containing a reactive group and not containing a pigment adsorbing group, is provided.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: February 4, 2003
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hideaki Yamagata, Takehide Kishimoto, Takashi Nishimoto
  • Patent number: 6413686
    Abstract: A resin composition for a color filter is provided which can surely prevent the occurrence of display failures (unacceptable display phenomena) of color liquid crystal display devices, can broaden a range of selection of usable constituent materials, and does not incur increased cost. The resin composition for a color filter comprises a combination of a volatile component with a nonvolatile component, wherein: not less than 50% by weight of the nonvolatile component is accounted for by a first constituent, which, after the impurity extraction of a liquid crystal, permits the liquid crystal to have a voltage retention of not less than 60% and to have a residual DC (&Dgr;E) of not more than 0.6 V; and when less than 50% by weight of the nonvolatile component is accounted for by a second constituent, which, after the impurity extraction of a liquid crystal, cannot permit the liquid crystal to have a voltage retention of not less than 60% and to have a residual DC (&Dgr;E) of not more than 0.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: July 2, 2002
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Takehide Kishimoto, Hideaki Yamagata
  • Patent number: 6414733
    Abstract: Disclosed is a color liquid crystal display in which a shielding member is disposed between a sealing member and a display zone to prevent the liquid crystal layer from being contaminated with liquid crystal-contaminants from the sealing member wherein the shielding member is formed of a material which does not adversely affect the liquid crystal layer.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: July 2, 2002
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Keizo Ishikawa, Takehide Kishimoto, Hideaki Yamagata, Takashi Nishimoto
  • Publication number: 20020045112
    Abstract: Provided is a set material of photoinitiators which prevent a reduction in the light transmittance of each colored resist. The colored resist material set comprises at least colored resist materials having three colors and consisting of a red resist material, a green resist material and a blue resist material, each resist material containing a reactive monomer, a photoinitiator and a dye and/or a pigment, wherein the photoinitiator contained in the red resist material has a photoabsorption region on the side of wavelengths shorter than 570 nm, the photoinitiator contained in the green resist material has a photoabsorption region on the side of wavelengths shorter than 460 nm, and the photoinitiator contained in the blue resist material has a photoabsorption region on the side of wavelengths shorter than 400 nm, each photoinitiator using at least two or more photoinitiators.
    Type: Application
    Filed: August 17, 2001
    Publication date: April 18, 2002
    Inventors: Takehide Kishimoto, Miho Watanabe
  • Publication number: 20020009654
    Abstract: The present invention is to provide a pigment dispersion composition for a color filter having the excellent pigment dispersing property and dispersion stability, good developing property and reactivity, and an extremely small residue generation amount after development, a production method capable of stably producing such a pigment dispersion composition, and a color filter for a display having a high transmittance and a low light scattering property. A pigment dispersion composition for a color filter containing at least a pigment, a pigment dispersing agent, a binder resin, a reactive compound, and a solvent, wherein the binder resin is a compound having a pigment adsorbing block containing a pigment adsorbing group and not containing a reactive group, and a reactive block containing a reactive group and not containing a pigment adsorbing group, is provided.
    Type: Application
    Filed: May 31, 2001
    Publication date: January 24, 2002
    Inventors: Hideaki Yamagata, Takehide Kishimoto, Takashi Nishimoto
  • Publication number: 20010051306
    Abstract: A resin composition for a color filter is provided which can surely prevent the occurrence of display failures (unacceptable display phenomena) of color liquid crystal display devices, can broaden a range of selection of usable constituent materials, and does not incur increased cost. The resin composition for a color filter comprises a combination of a volatile component with a nonvolatile component, wherein: not less than 50% by weight of the nonvolatile component is accounted for by a first constituent, which, after the impurity extraction of a liquid crystal, permits the liquid crystal to have a voltage retention of not less than 60% and to have a residual DC (&Dgr;E) of not more than 0.6 V; and when less than 50% by weight of the nonvolatile component is accounted for by a second constituent, which, after the impurity extraction of a liquid crystal, cannot permit the liquid crystal to have a voltage retention of not less than 60% and to have a residual DC (&Dgr;E) of not more than 0.
    Type: Application
    Filed: April 19, 2001
    Publication date: December 13, 2001
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Takehide Kishimoto, Hideaki Yamagata
  • Publication number: 20010017677
    Abstract: An object of the present invention is to provide a color filter for reliably preventing the liquid crystal layer from being contaminated with ionic materials, as well as a liquid crystal display excellent in display qualities. To achieve the object described above, the present invention provides a color filter comprises a substrate, a resin colored layer consisting of a plurality of colors formed in a predetermined pattern on the substrate, and a common transparent electrode layer, said resin colored layer bringing about a voltage holding ratio of 80 % or more and a residual DC (&Dgr;E) of 0.5 V or less in a liquid crystal subjected to treatment for extraction of impurities.
    Type: Application
    Filed: January 24, 2001
    Publication date: August 30, 2001
    Inventors: Takehide Kishimoto, Hideaki Yamagata, Takashi Nishimoto