SURFACE LIGHT SOURCE UNIT, AND DISPLAY DEVICE AND ELECTRONIC EQUIPMENT HAVING THE SAME

Japanese Patent JP3719362

B2

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.

Katsuya Ide

JP33642099A

November 24, 2005

November 26, 1999

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Seiko Epson Corporation

G09F9/00; F21V8/00; G02F1/1333; G02F1/1335; G02F1/13357; (IPC1-7): F21V8/00; G02F1/1333; G02F1/13357; G09F9/00

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Masahiko Ueyanagi
Osamu Suzawa

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