Patents by Inventor Johji Nakagaki

Johji Nakagaki 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: 7525107
    Abstract: An apparatus and method for forming an alignment layer with uniform orientation is provided. An alignment layer-forming apparatus includes an ion source for generating ion beams and one or more masks disposed between the ion source and a substrate. The masks each have a reflective face directed to the substrate. The ion beams are reflected between the reflective face of each mask and a thin-film which is disposed on the substrate and which is processed into an alignment layer, whereby the alignment layer is formed with the ion beam finally applied to the thin-film. The orientation of a liquid crystal can be rendered uniform by varying the shape and/or arrangement of the reflective face of the mask. Hence, a liquid crystal display with no brightness or color non-uniformity can be manufactured.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: April 28, 2009
    Assignee: International Business Machines Corporation
    Inventors: Johji Nakagaki, Akihiro Asahara, Hideo Kimura, Hiroaki Kitahara, Tatsuya Nishiwaki, Yasuhiko Shiota, Takeshi Yamada
  • Publication number: 20080011969
    Abstract: An apparatus and method for forming an alignment layer with uniform orientation is provided. An alignment layer-forming apparatus includes an ion source for generating ion beams and one or more masks disposed between the ion source and a substrate. The masks each have a reflective face directed to the substrate. The ion beams are reflected between the reflective face of each mask and a thin-film which is disposed on the substrate and which is processed into an alignment layer, whereby the alignment layer is formed with the ion beam finally applied to the thin-film. The orientation of a liquid crystal can be rendered uniform by varying the shape and/or arrangement of the reflective face of the mask. Hence, a liquid crystal display with no brightness or color non-uniformity can be manufactured.
    Type: Application
    Filed: December 5, 2006
    Publication date: January 17, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Johji Nakagaki, Akihiro Asahara, Hideo Kimura, Hiroaki Kitahara, Tatsuya Nishiwaki, Yasuhiko Shiota, Takeshi Yamada
  • Patent number: 6849858
    Abstract: An object of the present invention is to provide an apparatus and method for ensuring a uniform orientation of liquid crystal molecules of an alignment layer by irradiation with ion beams. An apparatus of the present invention comprises a grid 11a having a plurality of ion ejection holes 30 of various sizes. The size of the ion ejection hole 30 varies depending on an ion density. The size of the ion ejection hole 30 increases with decrease in the ion density.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: February 1, 2005
    Assignee: International Business Machines Corporation
    Inventors: Nobuo Okazaki, Yasuhiko Shiota, Johji Nakagaki
  • Publication number: 20050001177
    Abstract: An object of the present invention is to provide an apparatus and method for ensuring a uniform orientation of liquid crystal molecules of an alignment layer by irradiation with ion beams. An apparatus of the present invention comprises a grid 11a having a plurality of ion ejection holes 30 of various sizes. The size of the ion ejection hole 30 varies depending on an ion density. The size of the ion ejection hole 30 increases with decrease in the ion density.
    Type: Application
    Filed: July 1, 2003
    Publication date: January 6, 2005
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Nobuo Okazaki, Yasuhiko Shiota, Johji Nakagaki