Patent ID: 7645708

Claim:
A shadow mask deposition method of forming an electronic device comprising: (a) providing a plurality of identical shadow masks arranged in a number of stacks to form a like number of compound shadow masks, each of which is disposed in a deposition vacuum vessel along with a material deposition source; (b) depositing a first material on a substrate from the material deposition source in a first deposition vacuum vessel via an opening in a first compound shadow mask formed by the whole or partial alignment of apertures of the stack of shadow masks forming said first compound shadow mask; and (c) depositing a second material on the substrate from the material deposition source in a second deposition vacuum vessel via an opening in a second compound shadow mask formed by the whole or partial alignment of apertures in the stack of the shadow masks forming said second compound shadow mask, wherein at least one of (i) dimensions of each compound shadow mask opening and (ii) a location of each compound shadow mask opening relative to the substrate during the deposition of material through said opening is different whereupon the dimensions and/or the location of each material deposited on the substrate is different.