Patent ID: 8344487
Filing Date: 2013-01-01
Classification: H01L

Abstract:
1. A packaged microchip comprising: a single lead frame comprising a plurality of electrically independent leads; a die, the die physically coupled to one of: (a) the plurality of electrically independent leads, each of the electrically independent leads having a top surface physically coupled to the die and an outer edge, the top surface comprising a plurality of concavities between the die and the outer edge; or (b) a paddle, the paddle being electrically independent of the plurality of leads, the paddle having a top surface physically coupled to the die, a first outer edge and a second outer edge, the die physically coupled to the paddle between the first outer edge and the second outer edge, the top surface comprising a first plurality of concavities between the die and the first outer edge, and a second plurality of cavities between the die and the second outer edge; and mold material substantially encapsulating part of the top surface of the portion of the lead frame, wherein the plurality of concavities mitigate stress transmission within the lead frame.