Patents by Inventor Seiji Tawaraya

Seiji Tawaraya 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: 10088611
    Abstract: A color filter forming substrate used in a multifunctional terminal is provided which has a frame disposed surrounding respective colored layers for a color filter and having a non-display area formed by the frame portion all around a boundary between the display area and the frame, and specifically has a transparent substrate as a base material; and, on one side of the base material, colored layers of respective colors for a color filter disposed in a display area and a frame portion comprising a light-shielding colored layer disposed as a region not for display around a periphery of the region for display. The color filter forming substrate is used for a display device.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: October 2, 2018
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kazuyuki Hino, Seiji Tawaraya, Hiroki Sakata
  • Patent number: 10082618
    Abstract: An image display module includes a light emitting device including a nitride semiconductor light-emitting element, as a light source, having an emission peak wavelength in a wavelength range of 240 nm to 560 nm, an Mn4+-activated red fluorescent material having a maximum excitation wavelength in the wavelength range, an emission peak wavelength of 610 nm to 670 nm, and a half bandwidth of the emission spectrum of 30 nm or less, and a green fluorescent material having an emission peak wavelength in a wavelength range of 510 nm to 550 nm; and a color filter having a blue pixel wherein the difference between the maximum and the minimum value of transmittance at a wavelength range of 420 nm to 460 nm of the spectral transmittance curve is 4% or less.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: September 25, 2018
    Assignees: DAI NIPPON PRINTING CO., LTD., NICHIA CORPORATION
    Inventors: Kazuyuki Hino, Seiji Tawaraya, Hiroto Itoi, Atsushi Yamamoto, Takeshi Morikawa
  • Patent number: 9673263
    Abstract: Provided is an organic EL display device capable of preventing or restraining color shift or color mixing in an image displayed in each of its pixels, this inconvenience being caused by the entry of light into the pixel from an organic EL element of a pixel adjacent to the pixel; and provided is a color filter forming substrate making it possible to produce such an organic EL display device.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: June 6, 2017
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsushi Ono, Hiroki Sakata, Yousuke Wada, Masatoshi Oba, Seiji Tawaraya, Tadashi Furukawa
  • Publication number: 20170139090
    Abstract: A color filter forming substrate used in a multifunctional terminal is provided which has a frame disposed surrounding respective colored layers for a color filter and having a non-display area formed by the frame portion all around a boundary between the display area and the frame, and specifically has a transparent substrate as a base material; and, on one side of the base material, colored layers of respective colors for a color filter disposed in a display area and a frame portion comprising a light-shielding colored layer disposed as a region not for display around a periphery of the region for display. The color filter forming substrate is used for a display device.
    Type: Application
    Filed: January 20, 2017
    Publication date: May 18, 2017
    Inventors: Kazuyuki HINO, Seiji TAWARAYA, Hiroki SAKATA
  • Patent number: 9588265
    Abstract: A color filter forming substrate used in a multifunctional terminal is provided which has a frame disposed surrounding respective colored layers for a color filter and having a non-display area formed by the frame portion all around a boundary between the display area and the frame, and specifically has a transparent substrate as a base material; and, on one side of the base material, colored layers of respective colors for a color filter disposed in a display area and a frame portion comprising a light-shielding colored layer disposed as a region not for display around a periphery of the region for display. The color filter forming substrate is used for a display device.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: March 7, 2017
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kazuyuki Hino, Seiji Tawaraya, Hiroki Sakata
  • Publication number: 20160104821
    Abstract: An image display module includes a light emitting device including a nitride semiconductor light-emitting element, as a light source, having an emission peak wavelength in a wavelength range of 240 nm to 560 nm, an Mn4+-activated red fluorescent material having a maximum excitation wavelength in the wavelength range, an emission peak wavelength of 610 nm to 670 nm, and a half bandwidth of the emission spectrum of 30 nm or less, and a green fluorescent material having an emission peak wavelength in a wavelength range of 510 nm to 550 nm; and a color filter having a blue pixel wherein the difference between the maximum and the minimum value of transmittance at a wavelength range of 420 nm to 460 nm of the spectral transmittance curve is 4% or less.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 14, 2016
    Inventors: Kazuyuki HINO, Seiji TAWARAYA, Hiroto ITOI, Atsushi YAMAMOTO, Takeshi MORIKAWA
  • Patent number: 9213199
    Abstract: Provided is a liquid crystal display device which exhibits power saving property and high display quality and is capable of suppressing the time-dependent degradation in display quality. The above problem is solved by providing a liquid crystal display device comprising a liquid crystal cell unit including a color filter having a transparent substrate and a plurality of coloring layers formed on the transparent substrate, a counter substrate and a liquid crystal layer formed between the color filter and the counter substrate and a backlight unit including a light emitting device having a blue light emitting element, and a red fluorescent substance and a green fluorescent substance, and the plurality of coloring layers has a blue coloring layer containing a color material of a specific triarylmethane-based compound and the red fluorescent substance is a surface-treated M12[M21-xMn4+xF6] (for example, M1 represents K+ and M2 represents Si).
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: December 15, 2015
    Assignees: DAI NIPPON PRINTING CO., LTD., NICHIA CORPORATION
    Inventors: Kazuyuki Hino, Seiji Tawaraya, Atsushi Yamamoto, Tomokazu Yoshida, Saiki Yamamoto
  • Publication number: 20150349030
    Abstract: Provided is an organic EL display device capable of preventing or restraining color shift or color mixing in an image displayed in each of its pixels, this inconvenience being caused by the entry of light into the pixel from an organic EL element of a pixel adjacent to the pixel; and provided is a color filter forming substrate making it possible to produce such an organic EL display device.
    Type: Application
    Filed: December 10, 2013
    Publication date: December 3, 2015
    Inventors: Atsushi ONO, Hiroki SAKATA, Yousuke WADA, Masatoshi OBA, Seiji TAWARAYA, Tadashi FURUKAWA
  • Publication number: 20150268492
    Abstract: Provided is a liquid crystal display device which exhibits power saving property and high display quality and is capable of suppressing the time-dependent degradation in display quality. The above problem is solved by providing a liquid crystal display device comprising a liquid crystal cell unit including a color filter having a transparent substrate and a plurality of coloring layers formed on the transparent substrate, a counter substrate and a liquid crystal layer formed between the color filter and the counter substrate and a backlight unit including a light emitting device having a blue light emitting element, and a red fluorescent substance and a green fluorescent substance, and the plurality of coloring layers has a blue coloring layer containing a color material of a specific triarylmethane-based compound and the red fluorescent substance is a surface-treated M12[M21-xMn4+xF6] (for example, M1 represents K+ and M2 represents Si).
    Type: Application
    Filed: March 17, 2015
    Publication date: September 24, 2015
    Inventors: Kazuyuki HINO, Seiji TAWARAYA, Atsushi YAMAMOTO, Tomokazu YOSHIDA, Saiki YAMAMOTO
  • Publication number: 20130342927
    Abstract: A color filter forming substrate used in a multifunctional terminal is provided which has a frame disposed surrounding respective colored layers for a color filter and having a non-display area formed by the frame portion all around a boundary between the display area and the frame, and specifically has a transparent substrate as a base material; and, on one side of the base material, colored layers of respective colors for a color filter disposed in a display area and a frame portion comprising a light-shielding colored layer disposed as a region not for display around a periphery of the region for display. The color filter forming substrate is used for a display device.
    Type: Application
    Filed: July 3, 2012
    Publication date: December 26, 2013
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kazuyuki Hino, Seiji Tawaraya, Hiroki Sakata
  • 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: 7837316
    Abstract: A correction ink of the present invention is used for correcting a micro defect in a color pattern, which includes a coloring agent, polymer, monomer having reactivity functional group and a solvent, wherein an amount of the solvent is from 25% by weight to 70% by weight of the whole ink, and a viscosity is from 40 to 300 mPa·sec.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: November 23, 2010
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Seiji Tawaraya, Shunsuke Sega, Katsunori Arai, Tatsuya Kageyama
  • 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
  • Patent number: 7530682
    Abstract: A correction ink of the present invention is used for correcting a micro defect in a color pattern, which includes a coloring agent, polymer, monomer having reactivity functional group and a solvent, wherein an amount of the solvent is from 25% by weight to 70% by weight of the whole ink, and a viscosity is from 40 to 300 mPa·sec.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: May 12, 2009
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Seiji Tawaraya, Shunsuke Sega, Katsunori Arai, Tatsuya Kageyama
  • Publication number: 20090098308
    Abstract: A correction ink of the present invention is used for correcting a micro defect in a color pattern, which comprises a coloring agent, polymer, monomer having reactivity functional group and a solvent, wherein an amount of the solvent is from 25% by weight to 70% by weight of the whole ink, and a viscosity is from 40 to 300 mPa·sec.
    Type: Application
    Filed: August 26, 2008
    Publication date: April 16, 2009
    Inventors: Seiji TAWARAYA, Shunsuke SEGA, Katsunori ARAI, Tatsuya KAGEYAMA