Backlight unit and liquid crystal display device

Details Backlight unit and liquid crystal display device Backlight unit and liquid crystal display device

2006-08-04

2010-06-01

Husar, Stephen F (Department: 2875)

Illumination

Edge lighted panel

Light guide

C362S607000, C362S617000, C362S619000, C362S019000, C362S561000

Reexamination Certificate

active

07726865

ABSTRACT:
A backlight unit includes a prism sheet (an optical path changing portion and a light gathering portion) having lenses and being disposed to face an output surface of a light guide member, and a plurality of second prism inclined surfaces that are inclined at a predetermined inclination angle with respect to the output surface. Further, a lens surface that gathers light from the second prism inclined surfaces toward a normal line direction of the output surface according to the second prism inclined surfaces is provided, and a central position of the lens surface in a transmitting direction of the light guide member is matched with a central position of its corresponding second prism inclined surface.

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Official communication issued in the International Application No. PCT/JP2006/315508, mailed on Nov. 7, 2006.

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