Patents by Inventor Sadayasu Fujibayashi

Sadayasu Fujibayashi 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: 7663587
    Abstract: A liquid crystal display device has a gradation display function of at least an n-number of gray levels and has a viewing angle characteristic of Mi/Mj?1.3 in a case where a display luminance range in a normal direction to a display surface in a gradation range of predetermined gray levels i to j is Li to Lj and a display luminance range in an oblique viewing-angle direction of 30° or more is Mi to Mj (where n, i and j are real numbers, and n?i>j?0). The liquid crystal display device has a display mode in which a display image is displayed with a display luminance range of the display image being limited to Li to Lj.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: February 16, 2010
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Yoshitaka Yamada, Ryoichi Watanabe, Masaki Kinoshita, Yoshihiro Watanabe, Sadayasu Fujibayashi, Norihiro Yoshida
  • Publication number: 20070075950
    Abstract: A liquid crystal display device has a gradation display function of at least an n-number of gray levels and has a viewing angle characteristic of Mi/Mj?1.3 in a case where a display luminance range in a normal direction to a display surface in a gradation range of predetermined gray levels i to j is Li to Lj and a display luminance range in an oblique viewing-angle direction of 30° or more is Mi to Mj (where n, i and j are real numbers, and n?i>j?0). The liquid crystal display device has a display mode in which a display image is displayed with a display luminance range of the display image being limited to Li to Lj.
    Type: Application
    Filed: August 30, 2006
    Publication date: April 5, 2007
    Inventors: Yoshitaka YAMADA, Ryoichi Watanabe, Masaki Kinoshita, Yoshihiro Watanabe, Sadayasu Fujibayashi, Norihiro Yoshida
  • Patent number: 7006176
    Abstract: A liquid crystal display device comprises a poly-silicon TFT substrate having a condenser type digital analog converter, an another substrate disposed so as to face the poly-silicon TFT substrate, and liquid crystal positioned between the poly-silicon TFT substrate and the another substrate. In this liquid crystal device, a light blocking film is formed on a surface of the another substrate and contacts with the liquid crystal. The light blocking film has a resistance larger than n·?/CLC wherein n is a number of bits of the condenser type digital analog converter, ? is an operation stabilizing time of a condenser per one bit, and CLC is electrostatic capacitance between the poly-silicon TFT substrate and the another substrate.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: February 28, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Sadayasu Fujibayashi, Tomonobu Motai
  • Patent number: 6933995
    Abstract: An LCD device includes a transparent glass plate 122 and thin film transistor electrodes 124 formed on the glass plate 122. A photosensitive insulation film 128 is coated on the glass plate 122 and the thin film transistor electrodes 124. The insulation film 128 includes transparent and reflective regions 134 and 133 which are different in thickness. Light shielding films 126 are positioned underneath boundaries of the transparent and reflective regions 134 and 133. Where an optical exposure stage includes different reflection coefficient portions, the light shielding films 126 prevent light reflected by the exposure stage from reaching the insulation film thereby maintaining the accuracy of its patterning.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: August 23, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Sadayasu Fujibayashi, Atsuko Oono, Ryoichi Watanabe, Yoshitaka Yamada, Hirokazu Morimoto
  • Publication number: 20040212760
    Abstract: A liquid crystal display device comprises a poly-silicon TFT substrate having a condenser type digital analog converter. an another substrate disposed so as to face the poly-silicon TFT substrate, and liquid crystal positioned between the poly-silicon TFT substrate and the another substrate. In this liquid crystal device, a light blocking film is formed on a surface of the another substrate and contacts with the liquid crystal. The light blocking film has a resistance larger than n·&tgr;/CLC wherein n is a number of bits of the condenser type digital analog converter, &tgr; is an operation stabilizing time of a condenser per one bit, and CLC is electrostatic capacitance between the poly-silicon TFT substrate and the another substrate.
    Type: Application
    Filed: November 18, 2002
    Publication date: October 28, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Sadayasu Fujibayashi, Tomonobu Motai
  • Patent number: 6808868
    Abstract: A manufacturing method of a substrate for display panel comprises a step of forming an organic insulating film on a light transmissive substrate and a step of patterning the organic insulating film to form a first opening and a second opening smaller than the first opening formed as through holes therein. In particular, this patterning step includes a lithography process of selectively exposing the organic insulating film to light with the use of a photomask and removing the light-exposed portions, the photomask being so set that the average light transmittance is lower at a light transmissive area for the first opening than at a light transmissive area for the second opening.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: October 26, 2004
    Assignee: Toshiba Matsushita Display Technology Co., Ltd
    Inventors: Sadayasu Fujibayashi, Tetsuya Iizuka, Kouhei Nagayama
  • Patent number: 6798478
    Abstract: In a method of manufacturing a liquid crystal display apparatus having a liquid crystal layer between a first substrate and a second substrate and having an uneven layer with an uneven shape on a liquid crystal layer side of the first substrate, the uneven layer is formed by a film-forming step of forming a photosensitive resin layer on the first substrate, a first exposure step of exposing the photosensitive resin layer through a mask having a predetermined pattern, a developing step of developing the photosensitive resin layer exposed in the first exposure step, a second exposure step of exposing an entirety of the developed photosensitive resin layer, and a heating step of heating the photosensitive resin exposed in the second exposure step.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: September 28, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Sadayasu Fujibayashi
  • Publication number: 20040126706
    Abstract: A manufacturing method of a substrate for display panel comprises a step of forming an organic insulating film on a light transmissive substrate and a step of patterning the organic insulating film to form a first opening and a second opening smaller than the first opening formed as through holes therein. In particular, this patterning step includes a lithography process of selectively exposing the organic insulating film to light with the use of a photomask and removing the light-exposed portions, the photomask being so set that the average light transmittance is lower at a light transmissive area for the first opening than at a light transmissive area for the second opening.
    Type: Application
    Filed: December 18, 2003
    Publication date: July 1, 2004
    Inventors: Sadayasu Fujibayashi, Tetsuya Iizuka, Kouhei Nagayama
  • Publication number: 20040105043
    Abstract: An LCD device includes a transparent glass plate 122 and thin film transistor electrodes 124 formed on the glass plate 122. A photosensitive insulation film 128 is coated on the glass plate 122 and the thin film transistor electrodes 124. The insulation film 128 includes transparent and reflective regions 134 and 133 which are different in thickness. Light shielding films 126 are positioned underneath boundaries of the transparent and reflective regions 134 and 133. Where an optical exposure stage includes different reflection coefficient portions, the light shielding films 126 prevent light reflected by the exposure stage from reaching the insulation film thereby maintaining the accuracy of its patterning.
    Type: Application
    Filed: July 21, 2003
    Publication date: June 3, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Sadayasu Fujibayashi, Atsuko Oono, Ryoichi Watanabe, Yoshitaka Yamada, Hirokazu Morimoto
  • Publication number: 20020167622
    Abstract: In a method of manufacturing a liquid crystal display apparatus having a liquid crystal layer between a first substrate and a second substrate and having an uneven layer with an uneven shape on a liquid crystal layer side of the first substrate, the uneven layer is formed by a film-forming step of forming a photosensitive resin layer on the first substrate, a first exposure step of exposing the photosensitive resin layer through a mask having a predetermined pattern, a developing step of developing the photosensitive resin layer exposed in the first exposure step, a second exposure step of exposing an entirety of the developed photosensitive resin layer, and a heating step of heating the photosensitive resin exposed in the second exposure step.
    Type: Application
    Filed: April 29, 2002
    Publication date: November 14, 2002
    Inventor: Sadayasu Fujibayashi