Title:
LIGHT GUIDE PLATE AND BACKLIGHT DEVICE
Document Type and Number:
Japanese Patent JP2000222923
Kind Code:
A
Abstract:
To increase face luminance while supplementing reduction in luminance when a light guide plate is made thinly.
Incident light beam 15 from a fluorescent lamp 12 to a incident surface 11a of a light guide plate 11 is reflected at undersurface reflecting surface 11b to head for top surface of the plate 11. When the reflected light is reached a groove part 11db, the light is reflected at the groove part 11db and heads for the undersurface again. Then this light is reflected at groove 11c of the undersurface and outgone from plane part 11da of outgoing surface.
Inventors:
ITO HIDETOSHI
TERAGAKI YASUKO
YAMADA MASATO
TERAGAKI YASUKO
YAMADA MASATO
Application Number:
JP2216299A
Publication Date:
August 11, 2000
Filing Date:
January 29, 1999
Export Citation:
Assignee:
SANYO ELECTRIC CO
International Classes:
G02F1/1335; F21V8/00; G02F1/13357; (IPC1-7): F21V8/00; G02F1/1335
Attorney, Agent or Firm:
Masano Shibano
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