POLYMER STUD GRID ARRAY

摘要

The new structure comprises: an injection moulded three-dimensional substrate (S) made from an electrically insulating polymer; two-dimensionally configured polymer bumps (PS) formed during the injection-moulding process on the underside of the substrate (S); external connections (AA) formed on the polymer bumps (PS) by solderable end surfaces; conducting paths (LZ) at least on the underside of the substrate (S) to connect the external connections (AA) to inner connections (IA1); and at least one chip (C1) mounted on the substrate (S) with connections (CA1) which are electro-conductively linked to the inner connections. The novel structure, which is suitable for single-, few- or multi-chip modules, combines the advantages of a Ball Grid Array with those of MID (Moulded Interconnection Devices) technology, and the manufacture and metallization of the polymer bumps (PS) can be done within the framework of the process steps needed for MID technology and at minimal additional cost.