Patent ID: 7932590
Filing Date: 2011-04-26
Classification: H01F,H01L

Abstract:
1. An integrated circuit device comprising: a package substrate; a first substrate having a front side and a back side, the front side of the first substrate having one or more integrated circuit devices and a plurality of bond pads fabricated thereon, the first substrate being mounted to the package substrate; a second substrate having a front side, a back side, and a smaller area than the first substrate, the front side of the second substrate having one or more integrated circuit devices fabricated thereon, the second substrate being mounted to the first substrate; at least one passive component fabricated onto the back side of the second substrate, the at least one passive component being comprised of a metal structure; a first electrical conductor configured to allow electrical communications between the at least one passive component of the second substrate and at least one of the one or more integrated circuit devices of the first substrate; a second electrical conductor configured to allow electrical communications between the second substrate and the first substrate; a third electrical conductor configured to allow electrical communications between the first substrate and the package substrate, wherein the second electrical conductor and the third electrical conductor comprise a plurality of wire bonds; a first adhesive material to bond the back side of the first substrate to the package substrate; a second adhesive material to bond the back side of the second substrate to the front side of the first substrate; and an encapsulant formed over the package substrate, the first substrate, the second substrate and the plurality of wire bonds.