Patent ID: 6685454
Filing Date: 2004-02-03
Classification: H01L

Abstract:
Apparatus for filling a gap between a device and a substrate of an assembly, said apparatus including a supporting structure for supporting said assembly, said assembly having a substrate and a semiconductor device attached thereto, a perimeter extending around all sides of said semiconductor device, a gap between said semiconductor device and said substrate, said semiconductor device having an active surface facing said gap and an exterior surface, and said substrate having a plurality of electrical circuits facing said gap and an exterior surface with a plurality of thermal vias formed between said plurality of electrical circuits and said exterior surface of said substrate with said plurality of thermal vias in communication with said gap, said apparatus comprising:a fill apparatus for positioning fill material about a perimeter of said gap, said fill apparatus having a source of fill material; a pressure chamber positioned about said exterior surface of said semiconductor device applying a desired fluid pressure against said fill material positioned about said perimeter, said pressure chamber having an inlet for a source of pressurized gas; and a vacuum chamber positioned about said exterior surface of said substrate, said vacuum chamber being configured to draw a vacuum through said plurality of thermal vias, said vacuum chamber having an opening therein for the application of a pressure less than atmospheric pressure to said vacuum chamber.