Patent ID: 7723832
Filing Date: 2010-05-25
Classification: H01L

Abstract:
1. A semiconductor device comprising: a BGA (ball grid array) type semiconductor device including a base plate, a first semiconductor element mounted on a frontside surface of the base plate, a first resin that seals an upper surface of the first semiconductor element and the frontside surface of the base plate, and a plurality of bumps formed on a backside surface of the base plate that is opposite the frontside surface; and a CSP (chip size packaged) type semiconductor device mounted on an area of the backside surface of the base plate of said BGA type semiconductor device which does not have the plurality of bumps formed thereon, said CSP type semiconductor device having a second semiconductor element which has main and back surfaces, and side surfaces between the main and back surfaces, and a plurality of terminals which are formed on the main surface, wherein the back surface and the entirety of the side surfaces of the second semiconductor element are exposed, wherein the backside surface of the base plate is mounted to a printed circuit board via the plurality of bumps, and said CSP type semiconductor device as mounted on the backside surface of the base plate has a thickness less than a thickness of the plurality of bumps, wherein said CSP type semiconductor device has a second resin that covers the main surface of the second semiconductor element and side surfaces of the terminals, the first and second resins are separate from each other, and wherein a gap without resin exists between the second semiconductor element and the backside surface of the base plate.