Semispecular hollow backlight with gradient extraction

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United States of America Patent

PATENT NO 8591052
APP PUB NO 20110199352A1
SERIAL NO

13124951

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Abstract

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A backlight that includes a front reflector and a back reflector that form a hollow light recycling cavity including an output surface is disclosed. The backlight also includes a semi-specular element, and a light extraction element disposed within the hollow cavity. The light extraction element has a gradient specularity. The backlight also includes one or more light sources disposed to inject light into the hollow light recycling cavity, where the one or more light sources are configured to inject light over a limited angular range.

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Patent Owner(s)

  • 3M INNOVATIVE PROPERTIES COMPANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Liu, Tao Woodbury, US 557 3489
Wheatley, John A Lake Elmo, US 242 9410

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