Patent ID: 9385323
Filing Date: 2016-07-05
CPC Classification: C23C,H01L

Claim Text:
1. A method comprising: providing a shadow mask having a free-standing silicon nitride membrane, silicon oxide membrane, or aluminum oxide membrane, the free-standing membrane has one or more voids arranged in a desired pattern, the pattern of voids corresponds to a desired pattern of color emitter material; forming a pattern of a first color emitter material on a substrate using the shadow mask, wherein the pattern of the first color emitter material has one or more first color emitter material structures; forming a pattern of a second color emitter material on the substrate having the pattern of the first color emitter material using a second shadow mask having a free-standing silicon nitride membrane, silicon oxide membrane, or aluminum oxide membrane, wherein the pattern of the second color emitter material has one or more second color emitter material structures; and forming a pattern of a third color emitter material on the substrate having the pattern of the first color emitter material and the pattern of the second color emitter material using a third shadow mask having a free-standing silicon nitride membrane, silicon oxide membrane, or aluminum oxide membrane, wherein the pattern of third color emitter material has one or more third color emitter material structures, wherein the substrate forms a portion of an OLED device, wherein the first color emitter material structures and second color emitter material structures and third color emitter material structures do not overlap.