Patent ID: 6033937
Filing Date: 2000-03-07
Classification: H01L

Abstract:
A method of packaging a semiconductor integrated circuit with insulated bonding wires, comprising the steps of:attaching a semiconductor die to a mounting base;wire-bonding respective first ends of a plurality of aluminum bonding wires to respective bonding pads on the semiconductor die;wire-bonding respective second ends of the plurality of aluminum bonding wires to respective bonding fingers at inner ends of leads of a leadframe;after wire bonding of the respective first and second ends of the plurality of aluminum bonding wires, subsequently forming an S.sub.i O.sub.2 layer on the plurality of aluminum bonding wires using a plasma enhanced chemical vapor deposition process (PECVD) to thereby provide electrically-insulated bonding wires to prevent short-circuits between adjacent bonding wires;simultaneously subjecting the leads of the leadframe to the PECVD process to form an S.sub.i O.sub.2 layer on the leads of the leadframe;encapsulating the semiconductor die, the bonding wires, and the bonding fingers to expose the S.sub.i O.sub.2 layer outer ends of the leads of the leadframe; andremoving the S.sub.i O.sub.2 layer on the exposed outer ends of the leads of the leadframe.