Examples include, but are not limited to, liquid crystal displays employing an output polarizer for generating an image and organic light emitting diode displays employing circular polarizers for {HEAD ~ enhancement} of {TAIL ~ contrast ratio} in sunlight 
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Examples include , but are not limited to , liquid crystal displays employing an output polarizer for generating an image and organic light emitting diode displays employing circular polarizers for { HEAD ~ enhancement } of { TAIL ~ contrast ratio } in sunlight
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