Method for forming oleds using photolithography

Abstract

A method for making OLED displays, comprising a first step of providing a substrate with bottom electrode segments separated by a pixel definition layer; a second step of uniformly forming at least an OLED materials layer for emitting a first color, a top electrode, and a horizontal encapsulation layer; a third step of patterning a protective block over one set of bottom electrode segments; a fourth step of selectively removing the OLED materials layer, top electrode and horizontal encapsulation layer over the bottom electrode segments without the protective block; a fifth step of uniformly forming a vertical encapsulation layer over all surfaces; and a sixth step of selectively removing only the horizontal portions of the vertical encapsulation layer along with the protective block to create a fully encapsulated pixel over the set of bottom electrode segments that were protected by the protective block.

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