Patent ID: 7091523
Filing Date: 2006-08-15
Classification: H01L

Abstract:
1. A color OLED device having one or more pixels, at least one pixel comprising: four or more light-emitting elements, each light-emitting element comprising one or more layers of electroluminescent organic material producing a broadband light having a variable frequency-dependent luminous efficacy emission spectrum, and each light-emitting element further comprising a different color filter having a frequency range matched to a portion of the broadband light frequency range for differentially filtering the broadband light and emitting a different color of light; wherein the different colors of light emitted by three of the light-emitting elements specify a first color gamut of the OLED device, and an additional one or more of the light-emitting elements emit at least one additional different color of light and wherein the frequency range of the color filter of the additional light emitting element is matched to a portion of the broadband light frequency range having a radiant intensity greater than the radiant intensity of the portion of the broadband light frequency range that is matched to the frequency range of at least one of the color filters of the three light-emitting elements specifying the first color gamut of the OLED device, and the additional one or more light emitting elements having luminous efficiency greater than that of at least one of the three light emitting elements specifying the first color gamut.