Optical sheet, and backlight unit and display having plural...

Details Optical sheet, and backlight unit and display having plural... Optical sheet, and backlight unit and display having plural...

2008-02-12

2008-09-23

Nelms, David C. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S062000, C349S064000, C349S066000, C362S561000, C362S607000, C362S616000, C362S617000

Reexamination Certificate

active

07428027

ABSTRACT:
One embodiment of the present invention is an optical sheet including a lens sheet having a plurality of microlenses arranged on a front surface thereof and a plurality of projections located at a back side thereof, a projection being located between light transmission parts, and a part corresponding to the microlens being the light transmission part; and a plurality of light reflection layers provided on top of the plurality of projections. A light refracted by the side surface of the projection exits in an oblique direction towards a plane of the optical sheet. Thereby, the view angle can be broadened.

REFERENCES:
patent: 6195196 (2001-02-01), Kimura et al.
patent: 6421103 (2002-07-01), Yamaguchi
patent: 2005/0002204 (2005-01-01), Lin et al.
patent: 2004-094051 (2004-03-01), None
patent: 2006-106197 (2006-04-01), None
patent: 2006-318886 (2006-11-01), None

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