Display Backlight with Light Mixing Structures

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United States of America Patent

PATENT NO 9921356
SERIAL NO

15091444

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A display may have a backlight unit with a row of light-emitting diodes that emit light into the edge of a light guide layer. The light guide layer may have opposing upper and lower surfaces. The upper surface of the light guide layer may have ridges and the lower surface of the light guide layer may have bumps. The edge of the light guide layer may have light mixing structures. The light mixing structures may include an alternating pattern of protrusions with different shapes. For example, triangular protrusions of a first size may be patterned with triangular protrusions of a second size. The light mixing structures may reduce the mixing distance of the backlight unit.

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Patent Owner(s)

  • APPLE INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brown, Michael J Cupertino, US 107 1447

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