Backlight unit for liquid crystal display device

Details Backlight unit for liquid crystal display device Backlight unit for liquid crystal display device

2006-07-04

2006-07-04

Alavi, Ali (Department: 2875)

Illumination

Edge lighted panel

Light guide

C362S615000, C362S616000

Reexamination Certificate

active

07070315

ABSTRACT:
A backlight unit for a display device includes a light guide panel comprising a plate-shaped body, at least one light guide projection for fitting the light guide panel disposed on left side or right side of the plate-shaped body, and a plurality of patterns formed on a lower surface of the plate-shaped body to uniformly project light. Upper and lower surfaces of the light guide projection are disposed remote as much as predetermined intervals, respectively from planes extended from upper and lower surfaces of the plate-shaped body. The light guide projection further includes an inclined surface on a side adjacent to a light source to prevent the light guide projections from cracking. Also, the light guide projection has at least one rounded or chamfered corner in order to efficiently prevent light concentration.

REFERENCES:
patent: 5596429 (1997-01-01), Kokawa et al.
patent: 5988827 (1999-11-01), Lee
patent: 6046785 (2000-04-01), Won
patent: 6490015 (2002-12-01), Kim

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