Prism sheet, back light unit using the same and liquid...

Details Prism sheet, back light unit using the same and liquid... Prism sheet, back light unit using the same and liquid...

2011-03-15

2011-03-15

O'Shea, Sandra L (Department: 2875)

Illumination

Edge lighted panel

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

C362S620000, C362S626000

Reexamination Certificate

active

07905647

ABSTRACT:
A prism sheet, a back light unit using the same and liquid crystal display device having the back light unit are disclosed, for improvement of light concentration, frontal luminance and viewing angle, in which the prism sheet includes a light-condensing film. The light condensing film has a plurality of prism peaks, each having a triangular cross section inclined surface which is inclined from a top surface of the light-condensing film at an angle of about 20° to about 40°.

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