Prism sheet and backlight unit employing the same

Details Prism sheet and backlight unit employing the same Prism sheet and backlight unit employing the same

2005-11-23

2008-11-11

Ton, Anabel (Department: 2885)

Illumination

Edge lighted panel

Light guide

C362S629000

Reexamination Certificate

active

07448787

ABSTRACT:
Provided is a prism sheet including a substrate transmitting incident light and having at least one groove inwardly formed in a surface of the substrate. A refractive member is provided in the groove and has a relatively higher refractive index than a refractive index of the substrate. A prism is arranged to face the refractive member, refract and transmit incident light, and has a relatively lower refractive index than the refractive index of the refractive member. A backlight unit is provided that includes at least one light source emitting light, along with a light guide panel that guides a procession of light emitted from the light source. The prism sheet includes at least one groove inwardly formed in a surface of the light guide panel. A refractive member is provided in the groove and a prism is arranged to face the refractive member.

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