Backlight device and transmission type display apparatus

Details Backlight device and transmission type display apparatus Backlight device and transmission type display apparatus

2008-02-19

2010-12-21

Kianni, K. Cyrus (Department: 2883)

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

C349S063000, C349S064000

Reexamination Certificate

active

07855763

ABSTRACT:
A backlight device includes: a first prism sheet which has a triangular prism row on a major surface thereof; a first light source which emits light having directivity in a slanted direction with respect to a normal line direction of a light outgoing surface of the first prism sheet in opposite side to the triangular prism row side so as to enter into the triangular prism row of the first prism sheet; and a second light source which emits light having directivity in the normal line direction of the light outgoing surface of the first prism sheet so as to enter into the triangular prism row of the first prism sheet.

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