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).

  • Patent number: 8315002
    Abstract: 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: Grant
    Filed: February 2, 2012
    Date of Patent: November 20, 2012
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tomonobu Sumino, Seiji Tawaraya
  • Publication number: 20120129085
    Abstract: 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: Application
    Filed: February 2, 2012
    Publication date: May 24, 2012
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Tomonobu SUMINO, Seiji TAWARAYA
  • Patent number: 8179623
    Abstract: 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: Grant
    Filed: April 11, 2011
    Date of Patent: May 15, 2012
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tomonobu Sumino, Seiji Tawaraya
  • Publication number: 20110189599
    Abstract: 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: Application
    Filed: April 11, 2011
    Publication date: August 4, 2011
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Tomonobu SUMINO, Seiji TAWARAYA
  • Patent number: 7948697
    Abstract: 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: Grant
    Filed: March 8, 2005
    Date of Patent: May 24, 2011
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tomonobu Sumino, Sachie Furukawa, Seiji Tawaraya, Chiaki Katoh
  • Patent number: 7796236
    Abstract: 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: Grant
    Filed: October 10, 2008
    Date of Patent: September 14, 2010
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Seiji Tawaraya, Tomonobu Sumino, Shinji Hayashi
  • Patent number: 7589804
    Abstract: 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: Grant
    Filed: April 19, 2005
    Date of Patent: September 15, 2009
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Seiji Tawaraya, Tomonobu Sumino, Masahiro Tatsuzawa
  • Publication number: 20090033860
    Abstract: 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: Application
    Filed: October 10, 2008
    Publication date: February 5, 2009
    Inventors: Seiji TAWARAYA, Tomonobu SUMINO, Shinji HAYASHI
  • Patent number: 7468776
    Abstract: 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: Grant
    Filed: November 5, 2004
    Date of Patent: December 23, 2008
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Seiji Tawaraya, Tomohisa Honda, Tomonobu Sumino
  • Patent number: 7453546
    Abstract: 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: Grant
    Filed: March 17, 2004
    Date of Patent: November 18, 2008
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Seiji Tawaraya, Tomonobu Sumino, Shinji Hayashi
  • Patent number: 7371783
    Abstract: 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: Grant
    Filed: September 24, 2002
    Date of Patent: May 13, 2008
    Assignees: 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
  • Publication number: 20080094550
    Abstract: 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: Application
    Filed: April 19, 2005
    Publication date: April 24, 2008
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Seiji Tawaraya, Tomonobu Sumino, Masahiro Tatsuzawa
  • Publication number: 20070206303
    Abstract: 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: Application
    Filed: March 8, 2005
    Publication date: September 6, 2007
    Inventors: Tomonobu Sumino, Sachie Furukawa, Seiji Tawaraya, Chiaki Katoh
  • Publication number: 20070103635
    Abstract: 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: Application
    Filed: November 5, 2004
    Publication date: May 10, 2007
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Seiji Tawaraya, Tomohisa Honda, Tomonobu Sumino
  • Publication number: 20060227280
    Abstract: 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: Application
    Filed: March 17, 2003
    Publication date: October 12, 2006
    Inventors: Seiji Tawaraya, Tomonobu Sumino, Shinji Hayashi
  • Patent number: 7113249
    Abstract: 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: Grant
    Filed: December 30, 2003
    Date of Patent: September 26, 2006
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tomohisa Honda, Tomonobu Sumino
  • Publication number: 20050074563
    Abstract: 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: Application
    Filed: September 24, 2002
    Publication date: April 7, 2005
    Inventors: Masahiro Tatsuzawa, Kiyoshi Ito, Shinji Hayashi, Shunsuke Sega, Tomonobu Sumino, Minoru Yamaguchi, Tomomasa Kaneko, Kenichi Ueda
  • Publication number: 20040150782
    Abstract: 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: Application
    Filed: December 30, 2003
    Publication date: August 5, 2004
    Inventors: Tomohisa Honda, Tomonobu Sumino
  • Publication number: 20040017533
    Abstract: 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: Application
    Filed: April 3, 2003
    Publication date: January 29, 2004
    Inventor: Tomonobu Sumino
  • Patent number: 6680763
    Abstract: 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: Grant
    Filed: September 25, 2001
    Date of Patent: January 20, 2004
    Assignee: Dai Nippon Printing Co., LTD
    Inventors: Tomonobu Sumino, Akira Inoue