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