Multiplexing backlight with asymmetric turning film
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United States of America Patent
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Feb 21, 2023
Grant Date -
Jun 3, 2021
app pub date -
Feb 12, 2021
filing date -
Nov 3, 2016
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Abstract
The disclosure describes asymmetric turning films (ATFs) that may be used in conjunction with multiple light sources in a liquid crystal display assembly to provide multiple different characteristic output distributions of light. In some examples, the ATFs include a structured surface defining a plurality of microstructures having two or more faces with each face configured to reflect light in different directions. The microstructure may define a microstructure axis and an angle gradient characterizing the rotation of the microstructure axis across the structured surface of the ATF.
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