Patent ID: 6372553
Filing Date: 2002-04-16
Classification: H01L

Abstract:
A method of encapsulating a substrate based electronic package, comprising the steps of:providing a substrate having a first surface and a second surface, wherein said first surface has a device region and a gate region, said gate region being external to said device region; providing conductive traces formed on said first surface of said substrate including said gate region; providing a first number of electronic devices attached to said first surface of said substrate within said device region of said substrate; providing electrical connections between said electronic devices and said conductive traces; providing input/output connections formed on said substrate; providing electrical connections between said conductive traces and said input/output connections; attaching a barrier material to said gate region of said substrate, wherein said barrier material covers said conductive traces formed in said gate region; forming encapsulation material over said device region of said substrate, thereby covering said first number of electronic devices, and a part of said barrier material attached to said gate region of said substrate, thereby covering said conductive traces formed in said gate region, wherein said barrier material and said encapsulation material are chosen so that the adhesion of said barrier material to said substrate is less than the adhesion of said barrier material to said encapsulation material; curing said encapsulation material; and removing that part of said encapsulation material formed on said barrier material and said barrier material from said substrate.