Patent ID: 7632715

Claim:
A method comprising: providing a support structure ( 12 ); forming an adhesive layer ( 14 ) overlying the support structure, the adhesive layer having a first adhesive surface in contact with the support structure and an opposite second adhesive surface; placing a plurality of semiconductor die ( 16 - 20 ) on the second adhesive surface of the adhesive layer, the plurality of semiconductor die being laterally separated from each other and having electrical contacts ( 22 , 24 ) that are in contact with the second adhesive surface of the adhesive layer; forming a layer of encapsulating material ( 26 ) overlying and between the plurality of semiconductor die, the layer of encapsulating material having a distribution of filler material ( 28 ), a top portion, and a bottom portion; increasing a concentration of the filler material ( 28 ) in all areas laterally adjacent each of the plurality of semiconductor die so that the bottom portion has a higher concentration of filler material than the top portion; and removing the top portion.