Patent ID: 6717247
Filing Date: 2004-04-06
Classification: H01L

Abstract:
A device for forming an encapsulated circuit, said circuit including at least one wire with an end and a metal sheet having a metal surface, said end bonded to said metal surface, said device comprising:a mold having two mold parts which form a cavity when a parting surface of said one mold part interfaces a parting surface of said another mold part; said mold arranged to permit positioning said metal sheet between said parting surfaces and extending into said cavity; a clamp having a pair of jaws, one jaw with one clamping surface facing another jaw with another clamping surface; said clamp arranged to clamp onto said metal sheet inside said cavity, with said one jaw on one surface of said metal sheet and said another jaw on an opposite surface of said metal sheet; said one jaw being one bar extending into said cavity from a cavity surface of one said mold part; said one bar having one end surface being one said clamping surface inside said cavity; one ridge formed on said one end surface along a corner edge of said one bar; said one ridge arranged to abut said one metal surface when said metal sheet is clamped between said pair of jaws providing that clamping force is concentrated on said one metal surface along said one ridge; said ridge arranged to prevent leakage into an interface, between said one metal surface and said one bar, of an encapsulating medium injected into said cavity to provide a molding, after being extracted from said cavity, which includes said encapsulating medium containing a portion of said one metal surface and one tunnel through said encapsulating medium leading from outside said molding to said one metal surface inside said molding; said one tunnel providing access for bonding an end of a wire to said one metal surface.