Patent ID: 8338927
Filing Date: 2012-12-25
Classification: H01L,H05K,Y02P

Abstract:
1. A semiconductor device comprising: a semiconductor chip having an obverse surface on which a plurality of electrodes are disposed; a chip mounting portion having an obverse surface on which the semiconductor chip is disposed; a suspension lead having an obverse surface, a reverse surface opposite the obverse surface, and side surfaces between the obverse and reverse surfaces in the thickness direction of the suspension lead, the suspension lead supporting the chip mounting portion; a plurality of leads having an obverse surface, a reverse surface opposite the obverse surface, and side surfaces between the obverse and reverse surfaces in a thickness direction of each of the plurality of leads, respectively, the plurality of leads being disposed around the chip mounting portion; a plurality of wires connecting the plurality of electrodes of the semiconductor chip and the plurality of leads, respectively; and a sealing body having a top surface, a bottom surface opposite the top surface, and a plurality of side surfaces between the top and bottom surfaces in a thickness direction of the sealing body, the sealing body sealing the semiconductor chip, a part of the suspension lead, and a part of each of the plurality of leads, wherein the suspension lead and the plurality of the leads are respectively disposed along the plurality of the side surfaces of the sealing body such that the suspension lead and each of the plurality of the leads respectively overlaps with the plurality of the side surfaces of the sealing body in a plan view, wherein, in the plan view, each of the plurality of leads has a first part positioned outside of one of the plurality of the side surfaces of the sealing body and a second part positioned inside of one of the plurality of the side surfaces of the sealing body, wherein, in the plan view, the suspension lead has a first part positioned outside of one of the plurality of the side surfaces of the sealing body and a second part positioned inside of one of the plurality of the side surfaces of the sealing body, wherein the obverse surface, the reverse surface, and the plurality of the side surfaces of the first part of the suspension lead are exposed from the sealing body, wherein the obverse surface, the reverse surface, and the plurality of the side surfaces of the first part of each of the plurality of leads are exposed from the sealing body, wherein the obverse surface and the plurality of the side surfaces of the second part of the suspension lead are covered by the sealing body, and the reverse surface of the second part of the suspension lead is exposed from the bottom surface of the sealing body, wherein the obverse surface and the plurality of the side surfaces of the second part of each of the plurality of leads are covered by the sealing body, and the reverse surface of the second part of each of the plurality of leads is exposed from the bottom surface of the sealing body, and wherein an area of the obverse surface of the first part of the suspension lead is larger than an area of the obverse surface of the first part of each of the plurality of leads in a plan view.