Backlight with integral illumination source

Details Backlight with integral illumination source Backlight with integral illumination source

1998-03-05

2000-03-28

O'Shea, Sandra

Illumination

Light source or light source support and luminescent material

362551, 362559, 362560, 362561, 362582, F21V 2100, F21V 1700

Patent

active

060422416

ABSTRACT:
A backlight assembly for liquid crystal displays uses a clear sheet of plastic or UV friendly resin as a light-pipe and has one or more fluorescent lamps located in a cavity along an edge of the sheet. The cavity is coated with photo-luminescent phosphor. A quartz ultra-violet lamp inside the cavity is filled with Argon gas and a small amount of mercury to excite the phosphor coated cavity to fluoresce. The light energy generated is throughout the light-pipe, thereby providing much brighter displays than possible with prior art light-pipe backlight assemblies.

REFERENCES:
patent: 2644113 (1953-05-01), Etzkorn
patent: 5146354 (1992-09-01), Plesinger
patent: 5202950 (1993-04-01), Arego et al.
patent: 5211467 (1993-05-01), Seder
patent: 5359691 (1994-10-01), Tai et al.
patent: 5664862 (1997-09-01), Redmond et al.

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