Patent ID: 7271111

Claim:
A shadow mask deposition method of forming an electronic device comprising: (a) advancing a substrate through a plurality of deposition vacuum vessels, each of which includes a material deposition source and a compound shadow mask positioned therein; and (b) depositing on the substrate the material from the material deposition source positioned in each deposition vacuum vessel via the corresponding compound shadow mask to form on the substrate a circuit comprised of an array of electronic elements, wherein: each compound shadow mask includes a first shadow mask having at least one first aperture therethrough and a second shadow mask having at least one second aperture therethrough; the first and second shadow masks of each compound shadow mask are positioned with the one first aperture aligned with the one second aperture in a manner to define a desired sized opening through the compound shadow mask for the deposition of material in a desired pattern on the substrate therethrough; and the first shadow mask and the second shadow mask of each compound shadow mask are identical.