Patent ID: 6335221
Filing Date: 2002-01-01
Classification: B29C,H01L,Y10S

Abstract:
A method of encapsulating in plastic an electronic device mounted on a first side of a planar substrate in a molding machine, said method 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 force exerting apparatus; providing a biased floating plate apparatus 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 to enclose said electronic device and a portion of said planar substrate; clamping said planar substrate between said upper mold plate and said lower mold plate by said at least one clamping ridge of said upper mold plate contacting a portion of said planar substrate and said at least one clamping ridge of said lower mold plate contacting a portion of said planar substrate; compressing said upper mold plate and said lower mold plate to sealably contact portions of said planar substrate therebetween using said force exerting apparatus; compensating for differing thicknesses of said planar substrate using said biased floating plate apparatus providing adjustable compensation for substrates of varying thicknesses; and injecting fluid plastic into said cavities of said upper mold plate and said lower mold plate.