Applied Materials, Inc.
OLED DISPLAY DEVICES WITH SURFACES OF DIFFERENT WETTABILITY FOR DEPOSITION OF LIGHT ENHANCING LAYER

Abstract:

An organic light-emitting diode (OLED) structure including a substrate; a dielectric layer on the substrate having an array of well structures, wherein each well structure includes a recess with side walls and a floor, and the well structures are separated by plateaus; a stack of OLED layers covering at least the floor of the well; a light extraction layer (LEL) in the well over the stack of OLED layers; and a coating covering a portion of the stack of OLED layers such that a top surface of the plateaus is more hydrophobic than a surface in the well on which the light extraction layer is formed.