Patent ID: 8124461
Filing Date: 2012-02-28
Classification: H01L

Abstract:
1. A method for packaging a semiconductor device, comprising: mounting the semiconductor device on a primary portion of a die pad of a leadframe, the die pad further comprising at least one secondary portion and at least one separating portion, the primary portion and the secondary portion being connected via the separating portion; applying a preliminary etching on the separating portion to obtain a reverse T-shaped cross-section slit; wiring a set of signal lines from the semiconductor device to leads of leadframe; encapsulating the semiconductor device and the leadframe with a molding compound wherein the bottom side of the die pad is exposed outside the molding compound, wherein the T-shaped cross-section slit is filled with the molding compound to further stabilize the die pad; and then applying a separating etching on the separating portion so as electrically disconnect the primary portion and the secondary portion.