Patent ID: 7821119
Filing Date: 2010-10-26
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor chip having a main surface on which a plurality of pads are formed; a tab supporting the semiconductor chip; a plurality of suspension leads formed integral with the tab; a plurality of leads located around the tab, and arranged between the plurality of suspension leads adjacent to each other; a plurality of wires electrically coupling the plurality of pads and the plurality of leads, respectively; and a seal portion sealing the semiconductor chip and the plurality of wires; wherein a shape in a plan view of the seal portion is comprised of a quadrangle; wherein in the seal portion, each of the plurality of suspension leads are extended from a central portion of the seal portion toward a corner portion of the seal portion; wherein in the seal portion, the plurality of leads are only extended in directions perpendicular to sides of the seal portion, respectively; wherein each of the plurality of leads has a front end portion facing to the tab, and a back end portion opposed to the front end portion; wherein the plurality of leads includes first leads arranged next to the plurality of suspension leads, and second leads arranged farther from the plurality of suspension leads than the first leads; wherein a taper portion is formed at the front end portions of the first leads along the suspension leads, respectively; wherein the taper portion is not formed at the front end portions of the second leads; wherein the seal portion has an upper surface located at the main surface side of the semiconductor chip, and a lower surface opposed to the upper surface; and wherein the seal portion seals each of the plurality of leads such that a part of each of the plurality of leads is exposed from the lower surface of the seal portion.