Abstract: A top emitting OLED includes two organic light-extraction layers on top of an at least partially transparent cathode. At least one of the light-extraction layers comprises an electron transport material and at least one of the light-extraction layers comprises a hole transport material. In some embodiments, the electron transport material is Alq3 and the hole transport material is a triaryl amine derivative.

Abstract: A tandem Organic Light Emitting Diode (OLED) apparatus and method of fabricating the same, where the tandem OLED apparatus includes a buffer assisted charge generation layer having a junction of a p-type doped semiconductor layer and an n-type doped semiconductor layer, where a hole buffer layer and an electron buffer layer pair surrounding the junction of the p-type and n-type doped semiconductor layers. The OLED apparatus further includes a first OLED emissive layer and a second OLED emissive layer pair surrounding the buffer assisted charge generation layer, and a cathode and anode layer pair further surrounding the first and second OLED emissive layer pair.

Abstract: A method of fabricating an Organic Light Emitting Diode (OLED) sub-pixel including providing an insulating structure upon which at least one color light emitter is directly patterned between an anode and cathode pair, the anode and cathode pair when energized being configured to cause the at least one color light emitter to radiate visible light in an emission spectrum, and patterning a color filter above the anode and cathode pair and over the corresponding at least one color light emitter. The radiated visible light in the emission spectrum from the at least one color light emitter is configured to pass through the color filter and radiate visible light in a filtered spectrum, the radiated visible light in the filtered spectrum being narrower in wavelength than radiated visible light in the emission spectrum.