Title:
ULTRA-THIN BACKLIGHT
Document Type and Number:
WIPO Patent Application WO2002093070
Kind Code:
A3
Abstract:
A backlight (50) for a display device such as a liquid crystal display device includes a light guiding plate (52) having a front and a rear surface. The front and rear surfaces may be parallel to one another, or may instead be non-parallel. To the extent that such surfaces are non-parallel, one surface may be inclined at a single, or multiple angles with respect to the other surface. The backlight further includes a light source (60) that is coupled to an edge of the light guiding plate by means of an energy conserving coupling section, and which provides light that is conditioned and transmitted through the light guiding plate. Light extractors (54) are disposed on at least one side of the light guiding plate to assist in the transmission and conditioning of the light that is provided to the light guiding plate by the light source. A reflector (64) may also be provided to assure that all light flux directed into the light guiding plate is ultimately directed in the direction of the display device.
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Inventors:
INDITSKY BEN-ZION
Application Number:
PCT/IL2002/000379
Publication Date:
March 04, 2004
Filing Date:
May 16, 2002
Export Citation:
Assignee:
VISUS LTD (IL)
International Classes:
F21V8/00; F21V9/00; G02F1/1335; G02F1/13357; G02B6/00; F21V; (IPC1-7): F21V8/00; G02F1/1335
Foreign References:
| US5673128A | 1997-09-30 | |||
| US6053619A | 2000-04-25 | |||
| US5303322A | 1994-04-12 |
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