Patent ID: 7655496

Claim:
A method of fabricating a semiconductor device comprising: patterning a layer of photoresist onto a surface of a wafer to define metal feature areas and residual metal areas; depositing a metal layer over the patterned layer of photoresist, the metal layer comprising metal feature portions in the metal feature areas, residual metal portions in the residual metal areas, and residual metal flaps at edges of the metal feature portions, wherein the metal feature portions include legs of a microbolometer array; spraying the wafer with a high-pressure solvent to dissolve the layer of photoresist and to physically remove the residual metal portions from the residual metal areas and leaving at least a portion of the residual metal flaps; securing the wafer on a platen that can be rotated to at least a first position and a second position; and spraying the wafer, while the platen is at the first position and then at the second position, with a stream of frozen gas particles to remove the residual metal flaps.