Prism sheet and backlight module using the same

Details Prism sheet and backlight module using the same Prism sheet and backlight module using the same

2007-12-20

2010-06-01

Han, Jason Moon (Department: 2875)

Illumination

Display backlight

Lcd backlight

C362S330000, C362S620000, C362S626000

Reexamination Certificate

active

07726827

ABSTRACT:
An exemplary prism sheet includes a transparent main body. The main body includes a first surface and a second surface. The first surface is opposite to the second surface. A plurality of micro-depressions are defined in the first surface. A plurality of elongated arc-shaped protrusions are formed on the second surface. Each micro-depression is defined by four connecting sidewalls. A transverse width of each sidewall of each micro-depression progressively decreases with increasing distance from the second surface. A backlight module using the present prism sheet is also provided.

REFERENCES:
patent: 2006/0087743 (2006-04-01), Choi et al.
patent: 1716027 (2006-01-01), None
patent: 101025516 (2007-08-01), None
patent: 101117270 (2007-08-01), None
patent: 2004309802 (2004-11-01), None

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