Patents by Inventor Tomonobu Sumino
Tomonobu Sumino 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: 8315002Abstract: A color filter including a transparent substrate; a light shielding part formed on the transparent substrate and contains at least a light shielding material and a resin; and a colored layer formed in the opening part of the light shielding part on the transparent substrate to cover a part of the light shielding part. The light shielding part has the width of the thick film region, 85% or more of the maximum film thickness of the light shielding part and disposed in the central part of the light shielding part; and the width of each of the thin film regions, 50% or less of the maximum film thickness of the light shielding part and disposed on the both side parts of the light shielding part.Type: GrantFiled: February 2, 2012Date of Patent: November 20, 2012Assignee: Dai Nippon Printing Co., Ltd.Inventors: Tomonobu Sumino, Seiji Tawaraya
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Publication number: 20120129085Abstract: A color filter including a transparent substrate; a light shielding part formed on the transparent substrate and contains at least a light shielding material and a resin; and a colored layer formed in the opening part of the light shielding part on the transparent substrate to cover a part of the light shielding part. The light shielding part has the width of the thick film region, 85% or more of the maximum film thickness of the light shielding part and disposed in the central part of the light shielding part; and the width of each of the thin film regions, 50% or less of the maximum film thickness of the light shielding part and disposed on the both side parts of the light shielding part.Type: ApplicationFiled: February 2, 2012Publication date: May 24, 2012Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Tomonobu SUMINO, Seiji TAWARAYA
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Patent number: 8179623Abstract: A color filter including a transparent substrate; a light shielding part formed on the transparent substrate and contains at least a light shielding material and a resin; and a colored layer formed in the opening part of the light shielding part on the transparent substrate to cover a part of the light shielding part. The light shielding part has the width of the thick film region, 85% or more of the maximum film thickness of the light shielding part and disposed in the central part of the light shielding part; and the width of each of the thin film regions, 50% or less of the maximum film thickness of the light shielding part and disposed on the both side parts of the light shielding part.Type: GrantFiled: April 11, 2011Date of Patent: May 15, 2012Assignee: Dai Nippon Printing Co., Ltd.Inventors: Tomonobu Sumino, Seiji Tawaraya
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Publication number: 20110189599Abstract: A color filter including: a transparent substrate; a light shielding part formed on the transparent substrate and contains at least a light shielding material and a resin; and a colored layer formed in the opening part of the light shielding part on the transparent substrate to cover a part of the light shielding part. The light shielding part has: the width of the thick film region, 85% of more of the maximum film thickness of the light shielding part and disposed in the central part of the light shielding part, in a range of 30% to 60% of the light shielding part line width; and the width of each of the thin film regions, 50% or less of the maximum film thickness of the light shielding part and disposed on the both side parts of the light shielding part, in a range of 10% to 20% of the light shielding part line width.Type: ApplicationFiled: April 11, 2011Publication date: August 4, 2011Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Tomonobu SUMINO, Seiji TAWARAYA
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Patent number: 7948697Abstract: A color filter including: a transparent substrate; a light shielding part formed on the transparent substrate and contains at least a light shielding material and a resin; and a colored layer formed in the opening part of the light shielding part on the transparent substrate to cover a part of the light shielding part. The light shielding part has: the width of the thick film region, 85% of more of the maximum film thickness of the light shielding part and disposed in the central part of the light shielding part, in a range of 30% to 60% of the light shielding part line width; and the width of each of the thin film regions, 50% or less of the maximum film thickness of the light shielding part and disposed on the both side parts of the light shielding part, in a range of 10% to 20% of the light shielding part line width.Type: GrantFiled: March 8, 2005Date of Patent: May 24, 2011Assignee: Dai Nippon Printing Co., Ltd.Inventors: Tomonobu Sumino, Sachie Furukawa, Seiji Tawaraya, Chiaki Katoh
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Patent number: 7796236Abstract: A substrate for a liquid crystal display that includes at least a transparent substrate and a columnar spacer formed on the transparent substrate. The amount of initial deformation A of the spacer measured by a predetermined measurement method is 0.04 ?m or more and the amount of plastic deformation B is 0.7 ?m or less.Type: GrantFiled: October 10, 2008Date of Patent: September 14, 2010Assignee: Dai Nippon Printing Co., Ltd.Inventors: Seiji Tawaraya, Tomonobu Sumino, Shinji Hayashi
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Patent number: 7589804Abstract: The present invention provides a color filter that makes a liquid crystal display satisfactorily reproduce halftone color by effectively reducing color shift that occurs when the color on the liquid crystal display is changed stepwise from white to black, and a liquid crystal display comprising the color filter. A color filter 10 comprises red, green, and blue color patterns 10R, 10G, 10B corresponding to the display areas that the respective pixels in a liquid crystal driving cell 20 form. In the color filter 10, the contrasts of the red, green, and blue color patterns 10R, 10G, 10B (the individual contrasts of the color patterns) are preferably in the following relationship. Specifically, it is preferred that the contrast CR of the red color pattern 10R, the contrast CG of the green color pattern 10G, and the contrast CB of the blue color pattern 10B fulfill the relationship CR<CG<CB, as well as the relationship CR:CG=1.0:1.2 to 1.0:2.5, and CR:CB=1.0:1.5 to 1.0:4.5. The CR is preferably 700 or more.Type: GrantFiled: April 19, 2005Date of Patent: September 15, 2009Assignee: Dai Nippon Printing Co., Ltd.Inventors: Seiji Tawaraya, Tomonobu Sumino, Masahiro Tatsuzawa
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Publication number: 20090033860Abstract: A principal object of the present invention is to provide a substrate for a liquid crystal display not undergoing mura called gravity defect because the amount of deformation in a small load region is large and having a uniformity of the panel and an adequate recovery factor against a local load. In order to achieve the aforementioned object, the present invention provides the substrate for a liquid crystal display comprises at least a transparent substrate and a columnar spacer formed on the transparent substrate. The substrate is characterized in that the amount of initial deformation A of the spacer measured by a predetermined measurement method is 0.04 ?m or more and the amount of plastic deformation B is 0.7 ?m or less.Type: ApplicationFiled: October 10, 2008Publication date: February 5, 2009Inventors: Seiji TAWARAYA, Tomonobu SUMINO, Shinji HAYASHI
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Patent number: 7468776Abstract: A liquid crystal display apparatus having a large displacement amount in a small load range, without generation of gravity mura, low temperature foaming, or the like as mentioned above, and also having a sufficient strength against a local load; and furthermore, capable of constantly producing a gap between the transparent substrates. The liquid crystal display apparatus has at least two sheets of transparent substrates, a liquid crystal layer sealed between the two sheets of transparent substrates, and a plurality of columnar spacers formed between the two sheets of transparent substrates. The displacement amount between the 80 mN to 400 mN load is in a range of 0.1 mm to 0.8 mm, and the displacement amount between the 600 mN to 950 mN load is in a range of 0.05 mm to 0.5 mm at the time of applying a load.Type: GrantFiled: November 5, 2004Date of Patent: December 23, 2008Assignee: Dai Nippon Printing Co., Ltd.Inventors: Seiji Tawaraya, Tomohisa Honda, Tomonobu Sumino
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Patent number: 7453546Abstract: A principal object of the present invention is to provide a substrate for a liquid crystal display not undergoing mura called gravity defect because the amount of deformation in a small load region is large and having a uniformity of the panel and an adequate recovery factor against a local load. In order to achieve the aforementioned object, the present invention provides the substrate for a liquid crystal display comprises at least a transparent substrate and a columnar spacer formed on the transparent substrate. The substrate is characterized in that the amount of initial deformation A of the spacer measured by a predetermined measurement method is 0.04 ?m or more and the amount of plastic deformation B is 0.7 ?m or less.Type: GrantFiled: March 17, 2004Date of Patent: November 18, 2008Assignee: Dai Nippon Printing Co., Ltd.Inventors: Seiji Tawaraya, Tomonobu Sumino, Shinji Hayashi
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Patent number: 7371783Abstract: Provided is an alkali-soluble maleimide-based copolymer which comprises, as essential constituents, 5 to 50% by mass of a maleimide monomer unit which is at least one unit selected from the group consisting of a N-cyclohexylmaleimide monomer unit, a N-benzylmaleimide monomer unit and a substituted N-benzylmaleimide monomer unit, 8 to 30% by mass of the (meth)acrylic acid monomer unit and 30 to 87% by mass of a (meth)acrylic acid ester monomer unit and which satisfies the condition represented by the formula: 0.4×X?Y?0.5×X+10 where X is the content, in % by mass, of the N-cyclohexylmaleimide monomer unit, the N-benzylmaleimide monomer unit and the substituted N-benzylmaleimide monomer unit and Y is the content, in % by mass, of the (meth)acrylic acid monomer unit. Also provided are a color filter and a liquid crystal display which are formed by using the ionizing radiation-curable resin composition.Type: GrantFiled: September 24, 2002Date of Patent: May 13, 2008Assignees: Nippon Shokubai Co., Ltd., Dainippon Printing Co., Ltd.Inventors: Masahiro Tatsuzawa, Kiyoshi Ito, Shinji Hayashi, Shunsuke Sega, Tomonobu Sumino, Minoru Yamaguchi, Tomomasa Kaneko, Kenichi Ueda
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Publication number: 20080094550Abstract: The present invention provides a color filter that makes a liquid crystal display satisfactorily reproduce halftone color by effectively reducing color shift that occurs when the color on the liquid crystal display is changed stepwise from white to black, and a liquid crystal display comprising the color filter. A color filter 10 comprises red, green, and blue color patterns 10R, 10G, 10B corresponding to the display areas that the respective pixels in a liquid crystal driving cell 20 form. In the color filter 10, the contrasts of the red, green, and blue color patterns 10R, 10G, 10B (the individual contrasts of the color patterns) are preferably in the following relationship. Specifically, it is preferred that the contrast CR of the red color pattern 10R, the contrast CG of the green color pattern 10G, and the contrast CB of the blue color pattern 10B fulfill the relationship CR<CG<CB, as well as the relationship CR:CG=1.0:1.2 to 1.0:2.5, and CR:CB=1.0:1.5 to 1.0:4.5. The CR is preferably 700 or more.Type: ApplicationFiled: April 19, 2005Publication date: April 24, 2008Applicant: Dai Nippon Printing Co., Ltd.Inventors: Seiji Tawaraya, Tomonobu Sumino, Masahiro Tatsuzawa
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Publication number: 20070206303Abstract: A color filter including: a transparent substrate; a light shielding part formed on the transparent substrate and contains at least a light shielding material and a resin; and a colored layer formed in the opening part of the light shielding part on the transparent substrate to cover a part of the light shielding part. The light shielding part has: the width of the thick film region, 85% of more of the maximum film thickness of the light shielding part and disposed in the central part of the light shielding part, in a range of 30% to 60% of the light shielding part line width; and the width of each of the thin film regions, 50% or less of the maximum film thickness of the light shielding part and disposed on the both side parts of the light shielding part, in a range of 10% to 20% of the light shielding part line width.Type: ApplicationFiled: March 8, 2005Publication date: September 6, 2007Inventors: Tomonobu Sumino, Sachie Furukawa, Seiji Tawaraya, Chiaki Katoh
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Publication number: 20070103635Abstract: A liquid crystal display apparatus having a large displacement amount in a small load range, without generation of gravity mura, low temperature foaming, or the like as mentioned above, and also having a sufficient strength against a local load; and furthermore, capable of constantly producing a gap between the transparent substrates. The liquid crystal display apparatus has at least two sheets of transparent substrates, a liquid crystal layer sealed between the two sheets of transparent substrates, and a plurality of columnar spacers formed between the two sheets of transparent substrates. The displacement amount between the 80 mN to 400 mN load is in a range of 0.1 mm to 0.8 mm, and the displacement amount between the 600 mN to 950 mN load is in a range of 0.05 mm to 0.5 mm at the time of applying a load.Type: ApplicationFiled: November 5, 2004Publication date: May 10, 2007Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Seiji Tawaraya, Tomohisa Honda, Tomonobu Sumino
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Publication number: 20060227280Abstract: A principal object of the present invention is to provide a substrate for a liquid crystal display not undergoing mura called gravity defect because the amount of deformation in a small load region is large and having a uniformity of the panel and an adequate recovery factor against a local load. In order to achieve the aforementioned object, the present invention provides the substrate for a liquid crystal display comprises at least a transparent substrate and a columnar spacer formed on the transparent substrate. The substrate is characterized in that the amount of initial deformation A of the spacer measured by a predetermined measurement method is 0.04 ?m or more and the amount of plastic deformation B is 0.7 ?m or less.Type: ApplicationFiled: March 17, 2003Publication date: October 12, 2006Inventors: Seiji Tawaraya, Tomonobu Sumino, Shinji Hayashi
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Patent number: 7113249Abstract: The main object of the present invention is to provide a substrate for a monochrome liquid crystal display apparatus having the excellent evenness of the gap between the substrate for a monochrome liquid crystal display apparatus and the counter substrate, capable of displaying with a preferable image quality without the brightness irregularity.Type: GrantFiled: December 30, 2003Date of Patent: September 26, 2006Assignee: Dai Nippon Printing Co., Ltd.Inventors: Tomohisa Honda, Tomonobu Sumino
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Publication number: 20050074563Abstract: It is an object of the present invention to provide an alkali-soluble maleimide-based copolymer excellent in resistance for thermally yellowing, high in hardness, excellent in solubility in solvents and capable of readily forming uniform coat films and, in addition, capable of being satisfactorily dissolved in alkali water when remaining uncured, as well as a pigment dispersion composition comprising such copolymer and an ionizing radiation-curable resin composition comprising such copolymer. Another object of the present invention is to provide a color filter and a liquid crystal display which are formed by using the ionizing radiation-curable resin composition.Type: ApplicationFiled: September 24, 2002Publication date: April 7, 2005Inventors: Masahiro Tatsuzawa, Kiyoshi Ito, Shinji Hayashi, Shunsuke Sega, Tomonobu Sumino, Minoru Yamaguchi, Tomomasa Kaneko, Kenichi Ueda
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Publication number: 20040150782Abstract: The main object of the present invention is to provide a substrate for a monochrome liquid crystal display apparatus having the excellent evenness of the gap between the substrate for a monochrome liquid crystal display apparatus and the counter substrate, capable of displaying with a preferable image quality without the brightness irregularity.Type: ApplicationFiled: December 30, 2003Publication date: August 5, 2004Inventors: Tomohisa Honda, Tomonobu Sumino
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Publication number: 20040017533Abstract: A liquid crystal display which generation of reverse twist is prevented, capable of displaying an excellent image having a wide visibility angle property, and containing no display irregularity is provided. The liquid crystal display comprises a liquid crystal layer formed by sandwiching a liquid crystal substance in between a color filter substrate and an electrode substrate having a pixel electrode and a common electrode provided parallel to the substrate surface, the color filter substrate has a black matrix, a color filter composed of coloring patterns of a plurality of colors, and a protective layer formed to cover the above-mentioned black matrix and color filter, and the black matrix has an electric conductivity of 9.0×10-9 S/cm or less and the coloring pattern has an electric conductivity of 2.0 ×10−10 S/cm or less.Type: ApplicationFiled: April 3, 2003Publication date: January 29, 2004Inventor: Tomonobu Sumino
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Patent number: 6680763Abstract: A photosensitive resin composition which enables the formation of a pattern manifesting large elastic deformation ratio and small plastic deformation ratio in a wider temperature range, and a color filter which enables the production of a liquid crystal display having a columnar convex part for setting the thickness of a liquid crystal layer and having excellent display qualities are provided. A photosensitive resin composition comprises at least a polymer, a poly-functional acrylate monomer and a photopolymerization initiator, wherein the content of the poly-functional acrylate monomer is from 50 to 70% by weight. A photosensitive resin composition comprises at least a polymer, a monomer having an unsaturated double bond, a photopolymerization initiator, and an alicyclic compound-containing resin, wherein the alicyclic compound is a compound having a poly-cyclic steric structure.Type: GrantFiled: September 25, 2001Date of Patent: January 20, 2004Assignee: Dai Nippon Printing Co., LTDInventors: Tomonobu Sumino, Akira Inoue