Patent ID: 7193331

Claim:
A semiconductor device, comprising: a circuit board; a first semiconductor chip mounted on said circuit board; a built-in semiconductor package on said first semiconductor chip; and a first molded resin encompassing said first semiconductor chip and said built-in semiconductor package; said built-in semiconductor package including, at least one second semiconductor chip mounted on a die pad, said second semiconductor chip having a plurality of terminals, a plurality of lead frames, each of said lead frames being electrically connected with respective one of the terminals of said second semiconductor chip and having a connection region on one side and a support region on the other opposing side, and a second molded resin encompassing said die pad, said second semiconductor chip, and said lead frames so that each of the connection regions is exposed and each of the support regions is covered, said second molded resin having top and bottom surfaces, wherein a plane flush with the connection region is located between the top and bottom surfaces of said second molded resin.