Light guide plate with convergence concavities and method...

Details Light guide plate with convergence concavities and method... Light guide plate with convergence concavities and method...

2007-01-09

2007-01-09

O'Shea, Sandra (Department: 2875)

Illumination

Edge lighted panel

Light guide

C362S617000, C362S619000

Reexamination Certificate

active

10745217

ABSTRACT:
A light guide plate (300) for transmitting light beams from a light source to an LCD (liquid crystal display) includes: an incident surface (301) for introducing light beams into the light guide plate; an emitting surface (303) for uniformly transmitting light beams out from the light guide plate; and a bottom surface (302) opposite to the emitting surface for reflecting the light beams in directions toward the emitting surface. The light guide plate further provides a plurality of concavities (3031) on the emitting surface, for converging the light beams into the LCD. The light guide plate is a relatively simple, single integrated structure, and can obviate the need for a brightness layer in an associated LCD device.

REFERENCES:
patent: 5408387 (1995-04-01), Murase et al.
patent: 6139162 (2000-10-01), Masaki
patent: 6522373 (2003-02-01), Hira et al.
patent: 6752507 (2004-06-01), Wang et al.
patent: 2001/0053075 (2001-12-01), Parker et al.
patent: 2005/0237768 (2005-10-01), Matsumoto et al.
patent: 10123329 (1998-05-01), None

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