Patent ID: 7589010

Claim:
A method of connecting a semiconductor device having an active surface with at least one contact pad exposed thereover to an electronic circuit, comprising: substantially simultaneously applying multiple sub-layers of unconsolidated polymer material to use radiation to selectively consolidate the unconsolidated polymer material into at least a semi-solid state being substantially concurrently bonded to a lower layer thereby creating a single layer of polymer material with embedded consolidated polymer material structures; removing the unconsolidated polymer material to form apertures in the consolidated polymer material structures so that at least one aperture extends through the consolidated polymer material structures and exposes only at least one contact pad; applying a mixture of solder and flux to the at least one aperture so as to fill the at least one aperture to a level that is even with a top surface of the consolidated polymer material structure; and removing consolidated polymer material structures before connecting the semiconductor device to an electronic circuit.