Light guide plate with high-density diffusing dots

Details Light guide plate with high-density diffusing dots Light guide plate with high-density diffusing dots

2006-12-28

2008-10-28

O'Shea, Sandra L. (Department: 2875)

Illumination

Edge lighted panel

Light guide

C362S615000, C362S623000, C362S624000, C362S625000

Reexamination Certificate

active

07441936

ABSTRACT:
An exemplary light guide plate includes a light input surface, a bottom surface, a light output surface opposite to the bottom surface, and a plurality of dots. The dots are arranged on the bottom surface in series of adjacent columns parallel to the light input surface. A distance between two dot centers of two adjacent dots and sizes of the dots in a same dot column are uniform. Each dot column defines a column axis that passes through dot centers of each of the dots. A distance between two adjacent column axes increases with increasing distance from the first light input surface. A backlight module using the light guide plate is provided.

REFERENCES:
patent: 5386347 (1995-01-01), Matsumoto
patent: 5921651 (1999-07-01), Ishikawa
patent: 5931555 (1999-08-01), Akahane et al.

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