Patent ID: 7230594

Claim:
An OLED display device, comprising: a) an array of light emitting pixels, each pixel having three or more OLEDs for emitting different colors of light specifying a gamut and at least one additional OLED for emitting a color of light within the gamut, wherein the power efficiency of the additional OLED is higher than the power efficiency of at least one of the three or more OLEDs; and b) means for driving the OLEDs in the pixels to produce a given color and luminance at a reduced power usage, wherein the means for driving produces in-gamut colors using a combination of light from the additional OLED and light from the three or more OLEDs; wherein the three or more OLEDs and the additional OLED comprise the same light emitting material, the three or more OLEDs further comprise different color filters for producing the different colors of light specifying the gamut, and filtered light emitted by each of the three or more OLEDs has a narrower bandwidth than a bandwidth of light emitted by the additional OLED).