Patent ID: 6678167
Filing Date: 2004-01-13
Classification: H01L,H05K

Abstract:
An IC package comprising:a. a rigid support member having an upper surface and a lower surface, and at least one opening extending through the support member from the upper surface to the lower surface, b. a polymer substrate with a thickness of less than 10 mils and having an upper surface and a lower surface with the lower surface bonded to the upper surface of the support member thereby combining with the opening extending through the support member to form an open cavity, c. at least one IC chip flip-chip bonded to the lower surface of the substrate in the cavity, d. at least one IC chip flip-chip bonded to the upper surface of the substrate, e. a plurality of through hole interconnections through the substrate extending from the lower surface in the cavity to the upper surface, the through hole interconnections interconnecting the at least one flip-chip bonded to the lower surface of the substrate to the at least one IC chip flip-chip bonded to the upper surface of the substrate and f. an array of solder bumps on the lower surface of the support member with through hole interconnections through the support member interconnecting the array of solder bumps to the lower surface of the substrate.