Patent ID: 6740959
Filing Date: 2004-05-25
Classification: H01L

Abstract:
An electronic package incorporating shielding against the emissions of electromagnetic interference (EMI); comprising:a circuitized substrate of a dielectric organic material having opposite first and second surfaces, said first surface having a first portion and second portion; an electrically-conductive ring-shaped continuous ground band being embedded in said substrate extending proximate the perimeter of said substrate and extending between said second portion of said first surface and said second surface; a semiconductor chip being arranged on said first portion of said first surface; a plurality of electrically conductive circuit members being positioned on said first portion of said first surface of said substrate each being electrically coupled to said semiconductor chip; a lid member comprising an electrically conductive material being arranged on a surface of said semiconductor chip distal from the surface facing said substrate, said ground band being electrically connected with at least one electrically conductive member arranged on the second surface of said substrate, said lid member and at least one said electrically conductive circuit member on said first portion of the first surface of said substrate so as to impart an electromagnetic shield to said electronic package, a compliant and electrically conductive adhesive being arranged between said semiconductor chip and said lid member, and an electrically conductive stiffener being positioned on said second portion on the first surface of said substrate, said stiffener being electrically connected to at least one of said electrically conductive circuit members on said first portion on said first surface of said substrate, to at least one electrically conductive member on the second surface of said substrate through said electrically conductive ground band and in electrical connection with said lid member, an electrically conductive adhesive being arranged between said stiffener and said ground band and between said stiffener and said lid member so as to form said electrical connections between said elements.