Patent ID: 6472252
Filing Date: 2002-10-29
Classification: B29C,H01L

Abstract:
An encapsulation method in a molding machine for an electronic device mounted on a first side of a planar substrate comprising:providing an upper mold plate having a cavity therein and at least one clamping ridge located thereon and a lower mold plate having a cavity therein and at least one clamping ridge located thereon; providing apparatus for exerting a force; providing a biased floating plate apparatus for providing adjustable compensation for substrates of varying thicknesses, said biased floating plate apparatus having a plurality of spring members; mating said upper mold plate and said lower mold plate for enclosing said electronic device and at least a portion of said planar substrate; clamping said at least a portion of said planar substrate between said upper mold plate and said lower mold plate using said at least one clamping ridge of said upper mold plate for contacting a portion of said planar substrate and using said at least one clamping ridge of said lower mold plate for contacting a portion of said planar substrate; compressing said upper mold plate and said lower mold plate for sealably contacting portions of said planar substrate therebetween using said apparatus for exerting said force; compensating for differing thicknesses of said planar substrate using said biased floating plate apparatus for providing adjustable compensation for substrates of varying thicknesses; and injecting plastic material into said cavities of said upper mold plate and said lower mold plate.