Prism sheet

Details Prism sheet Prism sheet

2007-06-19

2007-06-19

Sember, Thomas M. (Department: 2885)

Illumination

Edge lighted panel

Light guide

C362S619000, C362S339000

Reexamination Certificate

active

11129477

ABSTRACT:
A prism sheet for a LCD backlight module is provided. The prism sheet contains a base layer and a prism layer formed on a side of the base layer. The prism layer contains multiple parallel latitudinal and longitudinal prism lenses intersecting with each other. As such, the prism sheet could provide both latitudinal and longitudinal convergence for the scattered lights from the diffusion film. Additionally, by adjusting the apex angles, shapes, and heights of the prism lenses, optimal horizontal and vertical viewing angles of the LCD display could be achieved.

REFERENCES:
patent: 2004/0263061 (2004-12-01), Ishikawa et al.
patent: 7-159607 (1995-06-01), None
patent: 2001081523 (2001-08-01), None

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