Optical sheet and backlight unit having the same

Details Optical sheet and backlight unit having the same Optical sheet and backlight unit having the same

2005-12-15

2009-02-03

Truong, Bao Q (Department: 2875)

Illumination

Edge lighted panel

Light modifier with emission face combined with light guide...

C362S330000, C359S619000

Reexamination Certificate

active

07484874

ABSTRACT:
An optical sheet and a backlight unit having the same are provided. The optical sheet includes a substrate, a lens array, and a diffuser film. The lens array includes a plurality of lenses arranged on an upper surface of the substrate and the diffuser film disposed on a lower surface of the substrate and including a plurality of protrusions. Each of the protrusions is arranged in a direction perpendicular to the direction of each of the lenses, so that a viewing angle characteristic is improved and brightness is enhanced.

REFERENCES:
patent: 4924356 (1990-05-01), French et al.
patent: 6104854 (2000-08-01), Masaki et al.
patent: 6280063 (2001-08-01), Fong et al.
patent: 6527410 (2003-03-01), Yamaguchi

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