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

2007-11-15

2010-06-29

Lee, Y My Quach (Department: 2885)

Illumination

Plural light sources

With modifier

C362S240000, C362S339000

Reexamination Certificate

active

07744245

ABSTRACT:
An exemplary prism sheet includes a transparent main body. The main body includes a first surface, a second surface and a plurality of conical frustum micro-depressions and a plurality of triangular pyramidal micro-depressions. The first surface and the second surface are on opposite sides of the main body. The conical frustum micro-depressions are formed in the first surface and the triangular pyramidal micro-depressions are formed in the second surfaces. A backlight module using the present prism sheet is also provided.

REFERENCES:
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patent: 3373275 (1968-03-01), High
patent: 6827456 (2004-12-01), Parker et al.
patent: 7325958 (2008-02-01), Yang
patent: 2006/0172119 (2006-08-01), Hayashi et al.
patent: 2007/0002552 (2007-01-01), Tseng
patent: 2007/0263408 (2007-11-01), Chua
patent: 101025518 (2007-08-01), None
patent: 6-308485 (1994-11-01), None
patent: 2006337526 (2006-12-01), None

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