Patents by Inventor Shinji Higashi

Shinji Higashi 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).

  • Backlight unit with heat-radiating plates soldered to terminals and liquid crystal display device using the backlight unit
    Patent number: 6678022
    Abstract: A backlight unit includes a light guide plate, a fluorescent tube having terminals at both ends thereof and disposed along a side surface of the light guide plate, a reflector plate fitted to a principal surface on one side of the light guide plate, and a reflector film fitted to the light guide plate so as to cover the fluorescent tube. Leads are soldered respectively to the terminals of the fluorescent tube, and heat-radiating plates are co-soldered to the solder portions. A temperature rise at the solder portion can be restrained by the heat-radiating plate, so that deterioration of the solder portions can be restrained, and contact failure between the terminals of the fluorescent tube and the leads due to deterioration of the solder portions can be prevented.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: January 13, 2004
    Assignee: Fujitsu Limited
    Inventor: Shinji Higashi
  • Backlight unit and liquid crystal display device using the backlight unit
    Publication number: 20030053007
    Abstract: A backlight unit includes a light guide plate, a fluorescent tube having terminals at both ends thereof and disposed along a side surface of the light guide plate, a reflector plate fitted to a principal surface on one side of the light guide plate, and a reflector film fitted to the light guide plate so as to cover the fluorescent tube. Leads are soldered respectively to the terminals of the fluorescent tube, and heat-radiating plates are co-soldered to the solder portions. A temperature rise at the solder portion can be restrained by the heat-radiating plate, so that deterioration of the solder portions can be restrained, and contact failure between the terminals of the fluorescent tube and the leads due to deterioration of the solder portions can be prevented.
    Type: Application
    Filed: August 30, 2002
    Publication date: March 20, 2003
    Applicant: FUJITSU LIMITED
    Inventor: Shinji Higashi