SELECTIVE AMBIENT LIGHT ATTENUATING DEVICE AND ASSOCIATED EMISSIVE DISPLAY

摘要

A selective ambient attenuating device and associated display attenuates light reflected from an emissive display during bright ambient light conditions (280). A selective polarizer (210) is positioned above the emissive display (230). A quarter wave plate (220) is disposed between the selective polarizer (210) and the emissive display (230). A photo sensitive device (250) detects the ambient light condition and causes the selective polarizer (210) to transition between a transparent state to a linearly polarizing state and block reflected ambient light when the photo sensitive device detects high ambient light conditions. The quarter wave plate (220) is preferably disposed between the selective polarizer (210) and the emissive display (230) but can be disposed between a reflective surface (240) and the emissive display (230).