Patents by Inventor Tomohito Johnai

Tomohito Johnai 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: 7294373
    Abstract: A liquid crystal display device includes a liquid crystal display cell including lamination of a lower polarizer, a first glass substrate having a metal oxide glass film formed on the side of the lower polarizer, a liquid crystal layer, a second glass substrate having a metal oxide glass film formed on the side opposite the liquid crystal layer, and an upper polarizer; and a backlight unit including a light guide plate, a diffusion plate, and light sources. The metal oxide glass films are a transparent film made of an organic/inorganic hybrid material. The films are formed by coating a solution of a metal alkoxide composition on individual outer surfaces of the first glass substrate and the second glass substrate, both of which have been roughened by a polishing process, and by hydrolyzing and curing the metal alkoxide composition.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: November 13, 2007
    Assignees: International Business Machines Corporation, CMO Japan Co., Ltd.
    Inventors: Kenji Tsuboi, Hideo Ohkuma, Tomohito Johnai
  • Publication number: 20050007540
    Abstract: A liquid crystal display device includes a liquid crystal display cell including lamination of a lower polarizer, a first glass substrate having a metal oxide glass film formed on the side of the lower polarizer, a liquid crystal layer, a second glass substrate having a metal oxide glass film formed on the side opposite the liquid crystal layer, and an upper polarizer; and a backlight unit including a light guide plate, a diffusion plate, and light sources. The metal oxide glass films are a transparent film made of an organic/inorganic hybrid material. The films are formed by coating a solution of a metal alkoxide composition on individual outer surfaces of the first glass substrate and the second glass substrate, both of which have been roughened by a polishing process, and by hydrolyzing and curing the metal alkoxide composition.
    Type: Application
    Filed: June 8, 2004
    Publication date: January 13, 2005
    Applicants: International Business Machines Corporation, International Display Technology Co., Ltd.
    Inventors: Kenji Tsuboi, Hideo Ohkuma, Tomohito Johnai
  • Patent number: 6734944
    Abstract: In the liquid crystal display 10, consisting of a first substrate (12) and a second substrate (14) facing each other, either or both of the first substrate (12) and the second substrate (14) is/are disposed in a non-display region, the spacers 18 consisting of a photosensitive resin regulating the cell gaps 16 between both substrates 12 and 14, and liquid crystal 20 sandwiched between the first substrate (12) and the second substrate (14), either a dynamic hardness value or a plastic deformation hardness value is within a fixed range.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: May 11, 2004
    Assignee: International Business Machines Corporation
    Inventors: Toshihiko Koseki, Hidefumi Yamashita, Taro Hasumi, Yuichi Momoi, Yoshinori Shohmitsu, Tomohito Johnai
  • Patent number: 6554689
    Abstract: An abrading machine and abrading method are provided which permit a workpiece to be abraded without damage even in the case of heavy stock removal. A work holding member for mechanical abrasion includes a first holding member with a hole for receiving a workpiece and which transmits external drive force to the workpiece, and a second holding member placed on the first holding member and also having a hole for receiving the workpiece. The second holding member is removed after a predetermined volume of stock is abraded away; the workpiece is then abraded to a target thickness while being held by the first holding member alone. Thicknesses t1 and t2 of the first and second holding members are given by T1>t1+t2 and (½)T2≦t1, where T1 and T2 represent the workpiece thickness before and after abrasion, respectively.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: April 29, 2003
    Assignees: International Business Machines Corporation, Hamai Co., Ltd.
    Inventors: Hideo Ohkuma, Satoshi Maruyama, Kiyoshi Tomiki, Makoto Fujikawa, Tomohito Johnai, Yutaka Kunii, Kazuhiko Toyoda
  • Publication number: 20020102931
    Abstract: An abrading machine and abrading method are provided which permit a workpiece to be abraded without damage even in the case of heavy stock removal. A work holding member for mechanical abrasion includes a first holding member with a hole for receiving a workpiece and which transmits external drive force to the workpiece, and a second holding member placed on the first holding member and also having a hole for receiving the workpiece. The second holding member is removed after a predetermined volume of stock is abraded away; the workpiece is then abraded to a target thickness while being held by the first holding member alone. Thicknesses t1 and t2 of the first and second holding members are given by T1>t1+t2 and (½)T2≦t1, where T1 and T2 represent the workpiece thickness before and after abrasion, respectively.
    Type: Application
    Filed: January 31, 2002
    Publication date: August 1, 2002
    Applicant: International Business Machines Corporation
    Inventors: Hideo Ohkuma, Satoshi Maruyama, Kiyoshi Tomiki, Makoto Fujikawa, Tomohito Johnai, Yutaka Kunii, Kazuhiko Toyoda