Patent ID: 7019331

Claim:
An organic light-emitting device (OLED) having green emitting regions disposed over a substrate, and wherein each green emitting region includes: a) one or more light-emitting layer(s); b) a reflector and a semitransparent reflector respectively disposed on opposite sides of the light-emitting layer(s) and arranged to resonate light produced by such layers such that the light has a substantial green spectral component; c) a yellow color filter element disposed in relationship to each green emitting region to produce green light; and d) wherein each yellow filter element is selected to have a cut-off wavelength between 475 nm and 560 nm and at visible wavelengths greater than the cut-off wavelength to at least 700 nm, the transmittance of the color filter element is greater than at the transmittance at the cut-off wavelength and at visible wavelengths lower than the cut-off wavelength to at least 400 nm the transmittance of the color filter element is less than at the transmittance at the cut-off wavelength.