Patents by Inventor Kou Ohwada

Kou Ohwada 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).

  • Surface-emitting device precisely positioned in the front of liquid crystal display unit, and liquid crystal display device having the surface-emitting device
    Patent number: 6692134
    Abstract: A front light includes a bar-shaped light source, and a light guide panel that introduces light from the light source through an end face and emits the light from an emergent surface. The light source is supported at an end of the light guide panel by a cover member disposed so as to cover the light source and a part of the light guide panel. Protuberances are formed on the inner surface of the cover member, and the light guide panel is grasped via the protuberances. The light guide panel is positioned in the widthwise direction by projecting pieces extending from both sides of the cover member.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: February 17, 2004
    Assignee: Alps Electric Co., Ltd.
    Inventors: Kou Ohwada, Hideaki Nagakubo
  • Surface-emitting device precisely positioned in the front of liquid crystal display unit, and liquid crystal display device having the surface-emitting device
    Publication number: 20030007343
    Abstract: A front light includes a bar-shaped light source, and a light guide panel that introduces light from the light source through an end face and emits the light from an emergent surface. The light source is supported at an end of the light guide panel by a cover member disposed so as to cover the light source and a part of the light guide panel. Protuberances are formed on the inner surface of the cover member, and the light guide panel is grasped via the protuberances. The light guide panel is positioned in the widthwise direction by projecting pieces extending from both sides of the cover member.
    Type: Application
    Filed: July 2, 2002
    Publication date: January 9, 2003
    Applicant: Alps Electric Co., Ltd.
    Inventors: Kou Ohwada, Hideaki Nagakubo