Abstract:
A system and method is disclosed for using a pre-formed film in a transfer molding process of the type that uses a transfer mold to encapsulate portions of an integrated circuit with a molding compound. A film of compliant material is pre-formed to conform the shape of the film to a mold cavity surface of the transfer mold. The pre-formed film is then placed adjacent to the surfaces of the mold cavity of the transfer mold. The mold cavity is filled with molding compound and the integrated circuit is encapsulated. The pre-formation of the film allows materials to be used that are not suitable for use with prior art methods.
Abstract:
A system and method is disclosed for aligning an integrated circuit die on an integrated circuit substrate. A plurality of deposits of deformable material are placed on the substrate where the integrated circuit die is to be aligned. In one advantageous embodiment a stamping tool is indexed to a first tooling hole and to a second tooling hole in the substrate. The stamping tool imprints the deposits of deformable material to a tolerance of less than one hundred microns with respect to the first and second tooling holes. The imprinted portions of the deposits to form a pocket for receiving the integrated circuit die. This enables the integrated circuit die to be precisely aligned on the substrate in three dimensions.