Prism sheet and backlight module incorporating same

Details Prism sheet and backlight module incorporating same Prism sheet and backlight module incorporating same

2006-05-01

2008-07-22

Tso, Laura (Department: 2875)

Illumination

Edge lighted panel

Light guide

C362S607000, C362S339000

Reexamination Certificate

active

07401967

ABSTRACT:
A prism sheet (10) includes a substrate (12) and a plurality of prism structures (14). The substrate includes a plurality of diffusing particles (122) dispersed therein. The prism structures are at a light output side of the substrate. The diffusing particles can diffuse light beams traveling through the substrate. This configuration performs the same function as that of a diffusing sheet of a conventional backlight module. The prism structures can gather light beams to improve a brightness of a backlight module (6) incorporating the prism sheet. Thus, the backlight module can provide bright and uniform light at a low cost and while having a reduced thickness.

REFERENCES:
patent: 5844720 (1998-12-01), Ohara et al.
patent: 6441551 (2002-08-01), Abe et al.
patent: 2004/0061944 (2004-04-01), Kashima et al.
patent: 2004/0066645 (2004-04-01), Graf et al.
patent: 2004/0190102 (2004-09-01), Mullen et al.
patent: 2005/0046321 (2005-03-01), Suga et al.

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