A method of forming an organic light emitting device on a substrate is provided, wherein the method includes forming an active device structure on the substrate, adhering a mask to the substrate, wherein the mask covers an electrical contact portion of the substrate while exposing the active device structure, forming an encapsulant layer over the active device structure and the mask, forming a separation between a portion of the encapsulant layer that covers the active device structure and a portion of the encapsulant layer that covers the mask, and removing the mask from the substrate.