White phosphorescent organic light emitting diodes (WOLEDs) offer many advantages for solid-state lighting applications, including high color-rendering indexes, tunable color temperatures, and color stability. In side-by-side geometry, emissive stripes of different colors can be driven separately to enable color tunability. Previous side-by-side OLEDs have been patterned using shadow masks or chemical lift-off methods. We utilize a photolithographic peel-off patterning method to fabricate side-by-side WOLEDs consisting of two isolated color stripes, one emitting in the yellow and the other in the blue. This method allows for high-resolution stripe patterning without sacrificing device performance and lifetime.
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