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Title:
SURFACE LIGHT SOURCE UNIT, AND DISPLAY DEVICE AND ELECTRONIC EQUIPMENT HAVING THE SAME
Document Type and Number:
Japanese Patent JP3719362
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a surface light source unit capable of approximately unifying the amount of light radiated from a light guide plate in a radiating surface, a compact and light-weighted display device capable of being manufactured with a high accuracy in positioning with less man-hours, and electronic equipment using the same.
SOLUTION: In this surface light source unit 40, a fluorescent tube 50 is mounted along one end surface 45 of a light guide plate 44, the circumference of the fluorescent tube 50 excluding the side of the light guide plate 44, is mostly covered with a reflector 66, and the fluorescent tube 50 is longer than the length of the one end surface 45 of the light guide plate 44, and the reflector is provided with a shielding part 67 for covering a part projecting from the light guide plate, of the fluorescent tube, and a fixing part 68 for fixing the fluorescent tube 50 to prevent its longitudinal movement. The light guide plate 44 is located at a predetermined position of a plane approximately in parallel with a bottom part 57 in this surface light source unit.


Inventors:
Katsuya Ide
Application Number:
JP33642099A
Publication Date:
November 24, 2005
Filing Date:
November 26, 1999
Export Citation:
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Assignee:
Seiko Epson Corporation
International Classes:
G09F9/00; F21V8/00; G02F1/1333; G02F1/1335; G02F1/13357; (IPC1-7): F21V8/00; G02F1/1333; G02F1/13357; G09F9/00
Domestic Patent References:
JP4102888A
JP11052368A
JP4065007A
JP11133427A
JP6273789A
JP11249111A
JP3175427A
JP3009304A
JP3056974U
JP10020801A
JP3056370U
JP3114878U
JP4016423U
Attorney, Agent or Firm:
Masahiko Ueyanagi
Osamu Suzawa