Patents by Inventor Susumu Ohyama

Susumu Ohyama 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).

  • Lighting device, display device and television receiver
    Patent number: 8752973
    Abstract: A thickness of a backlight unit is reduced and brightness in a middle portion of a display device is improved. The backlight unit includes a first LED unit 23; a first light guide plate 20 including a light entering surface 20b, and a light exiting surface 20a; and a second light guide plate 21 including a light entering surface 21b, and a light exiting surface 21a. The light exiting surface 21a of the second light guide plate 21 is disposed to overlap at least a portion F of the light existing surface 20a of the first light guide plate 20 that is farthest from the first LED unit 23. Light outputted from the light exiting surface 21a of the second light guide plate 21 enters the first light guide plate 20 at least through a surface of the first light guide plate 20 opposite to the light exiting surface 20a thereof.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: June 17, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Susumu Ohyama
  • LIGHTING DEVICE, DISPLAY DEVICE AND TELEVISION RECEIVER
    Publication number: 20120188465
    Abstract: A thickness of a backlight unit is reduced and brightness in a middle portion of a display device is improved. The backlight unit includes a first LED unit 23; a first light guide plate 20 including a light entering surface 20b, and a light exiting surface 20a; and a second light guide plate 21 including a light entering surface 21b, and a light exiting surface 21a. The light exiting surface 21a of the second light guide plate 21 is disposed to overlap at least a portion F of the light existing surface 20a of the first light guide plate 20 that is farthest from the first LED unit 23. Light outputted from the light exiting surface 21a of the second light guide plate 21 enters the first light guide plate 20 at least through a surface of the first light guide plate 20 opposite to the light exiting surface 20a thereof.
    Type: Application
    Filed: September 1, 2010
    Publication date: July 26, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Susumu Ohyama