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).
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Patent number: 7312006Abstract: 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: GrantFiled: September 14, 2006Date of Patent: December 25, 2007Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hideaki Yamagata, Takehide Kishimoto, Takashi Nishimoto
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Publication number: 20070065736Abstract: 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: ApplicationFiled: September 14, 2006Publication date: March 22, 2007Inventors: Hideaki Yamagata, Takehide Kishimoto, Takashi Nishimoto
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Patent number: 7166394Abstract: 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: GrantFiled: December 11, 2002Date of Patent: January 23, 2007Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hideaki Yamagata, Takehide Kishimoto, Takashi Nishimoto
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Patent number: 6733935Abstract: 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: GrantFiled: August 17, 2001Date of Patent: May 11, 2004Assignee: Dai Nippon Printing Co., Ltd.Inventors: Takehide Kishimoto, Miho Watanabe
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Publication number: 20030189682Abstract: 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: ApplicationFiled: December 11, 2002Publication date: October 9, 2003Inventors: Hideaki Yamagata, Takehide Kishimoto, Takashi Nishimoto
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Patent number: 6600532Abstract: 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: GrantFiled: January 24, 2001Date of Patent: July 29, 2003Assignee: Dai Nippon Printing Co., Ltd.Inventors: Takehide Kishimoto, Hideaki Yamagata, Takashi Nishimoto
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Patent number: 6514644Abstract: 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: GrantFiled: May 31, 2001Date of Patent: February 4, 2003Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hideaki Yamagata, Takehide Kishimoto, Takashi Nishimoto
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Patent number: 6414733Abstract: 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: GrantFiled: February 7, 2000Date of Patent: July 2, 2002Assignee: Dai Nippon Printing Co., Ltd.Inventors: Keizo Ishikawa, Takehide Kishimoto, Hideaki Yamagata, Takashi Nishimoto
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Patent number: 6413686Abstract: 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: GrantFiled: April 19, 2001Date of Patent: July 2, 2002Assignee: Dai Nippon Printing Co., Ltd.Inventors: Takehide Kishimoto, Hideaki Yamagata
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Publication number: 20020045112Abstract: 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: ApplicationFiled: August 17, 2001Publication date: April 18, 2002Inventors: Takehide Kishimoto, Miho Watanabe
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Publication number: 20020009654Abstract: 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: ApplicationFiled: May 31, 2001Publication date: January 24, 2002Inventors: Hideaki Yamagata, Takehide Kishimoto, Takashi Nishimoto
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Publication number: 20010051306Abstract: 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: ApplicationFiled: April 19, 2001Publication date: December 13, 2001Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Takehide Kishimoto, Hideaki Yamagata
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Publication number: 20010017677Abstract: 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: ApplicationFiled: January 24, 2001Publication date: August 30, 2001Inventors: Takehide Kishimoto, Hideaki Yamagata, Takashi Nishimoto