Patent ID: 6875634

Claim:
A method for creating a Plastic Ball Grid Array (PBGA) package, comprising the steps of: (a) providing a PBGA substrate having points of electrical contact over the surface thereof, a layer of thermally conductive adhesive having been provided over the surface of said substrate, at least one semicoductor device having been positioned over the surface of said layer of thermally conductive adhesive using a die attach process, said positioning of said at least one conductor device being performed such that contact points provided in an active surface of said at least one semiconductor device being exposed and facing away from the surface of said substrate; (b) creating anchor posts over the surface of said substrate, said anchor posts being separated by a first distance; (c) curing said created anchor posts; (d) electrically connecting said contact points provided in an active surface of said at least one semiconductor device with said points of electrical contact provided over the surface of said substrate, using methods of wire bonding; (e) providing a heat spreader for said PBGA package, said heat spreader having a first and a second surface, said first surface facing said substrate, said first surface having been provided with a layer of electrically non-conductive material, said heat spreader comprising: (i) a horizontal portion, being parallel with the surface of said substrate of said PBGA package; (ii) heat spreader stand-off features; (iii) said heat spreader stand-off features having a contact surface providing contact between said heat spreader and said substrate; (iv) said contact surface of said heat spreader stand-off features having been provided with, openings there-through; and (v) said openings provided through said contact surfaces being separated by a distance of said first distance; (f) aligning said anchor posts provided over the surface of said substrate with said openings provided through said contact surfaces of said stand-off features of said heat spreader; and (g) inserting said anchor posts provided over the surface of said substrate into said openings provided through said contact surfaces of said stand-off features of said heat spreader, creating anchor posts protruding through said openings provided through said contact surfaces.