Patent ID: 8291964
Filing Date: 2012-10-23
Classification: H01L

Abstract:
1. A heat sink comprising a plurality of elongated stacked fins, each of the fins comprising a first dissipating portion and a second dissipating portion arranged in turn along a longitudinal axis of the fin, the first dissipating portion and the second dissipating portion of each fin offset from each other along a stack axis of the fins, wherein each fin further comprises two flanges respectively bending from a lateral side of the fin, each flange comprises a first portion adjoining the first dissipating portion, a second portion adjoining the second dissipating portion, and a center portion between the first portion and the second portion, an opening is defined in each fin between the first dissipating portion and the second dissipating portion thereof, and the opening is defined by edges of the center portions, the first dissipating portions and the second dissipating portions cooperatively.