Patent ID: 7638438

Claim:
A system for fabricating an integrated circuit on a semiconductor substrate, the system comprising: an extrusion head including a plurality of outlet orifices; a mask having a first peripheral portion defining a first inside edge and a central opening defined by the first inside edge; means for aligning the mask such that the first peripheral portion is positioned over one of a first peripheral area of the semiconductor substrate and a second peripheral area of the semiconductor substrate, and such that the central opening is positioned over a central area of the semiconductor substrate disposed between the first and second peripheral areas; means for moving the extrusion head relative to the semiconductor substrate such that the plurality of outlet orifices are moved from a first position over the first peripheral area to a second position over the second peripheral area, whereby the plurality of outlet orifice pass over the central area of the semiconductor substrate; means for controlling extrusion of a material such that said material is continuously extruded through the plurality of outlet orifices while the extrusion head is moved from the first position to the second position, whereby the extruded material forms a plurality of elongated extruded structures on the central area of the semiconductor substrate.