Patent ID: 7816186

Claim:
A method to manufacture a leadframe suitable for use in a package to encapsulate one or more integrated circuit devices comprising the steps of: providing a metallic sheet having a first side and an opposing second side; first partially chemically etching the metallic sheet from the first side thereof to form leadframe features including a die pad, leads, at least one ring circumscribing said die pad and disposed between said die pad and said leads, and a plurality of tie bars electrically interconnecting said die pad and said at least one ring and projecting outwardly from said at least one ring, said die pad, said leads, said at least one ring, and said tie bars having at least one coplanar side; subsequently severing each tie bar at a location where the tie bar interconnects said die pad and said ring by removing a portion of the leadframe, thereby electrically isolating said die pad from said ring and forming a cut portion; and disposing a non-conductive material in the cut portion.