| http://www.w3.org/ns/prov#value | - OLED device that includes a pixel having a plurality of individually addressable light emitting elements including a light emitting element for emitting white light, and one or more light emitting elements for emitting colored light; at least one of the light emitting elements being stacked on top of another of the light emitting elements; and the white light emitting element(s) being more efficie
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