Patent ID: 7602118

Claim:
An organic light-emitting diode (OLED) device, comprising: a substrate; an OLED comprising a first reflective electrode and a second transparent electrodes and one or more layer(s) of organic light-emitting material formed between the first reflective and second transparent electrodes, the first reflective electrode formed between the substrate and the one or more layer(s) of organic light-emitting material and the second transparent electrode and the layer(s) of organic light-emitting material having a first refractive index range; and a separate transparent encapsulating cover having a second refractive index and through which light from the OLED is emitted; further comprising a light scattering layer located between the substrate and cover external to the OLED, and a transparent low-index element having a third refractive index lower than each of the first refractive index range and second refractive index and located between the scattering layer and adjacent to and in contact with the transparent cover through which light from the OLED is emitted; and further comprising raised areas extending through the OLED and above the surface of the light-emitting area of the OLED and in contact with the cover.