Patent ID: 7942196

Claim:
A heat spreader adapted for dissipating heat from an electronic component, the heat spreader comprising: a lower plate defining a chamber therein; an upper plate fixed on the lower plate to seal the chamber; a working liquid contained in the chamber; a first wick layer accommodated in the chamber; and a second wick layer formed on the first wick layer and received in the chamber, wherein the first wick layer and the second wick layer each define a plurality of apertures communicating with each other to receive the working liquid therein; wherein the first wick layer comprises a ring, a tab located in a central area of the ring, and a plurality of strips interconnecting the tab and the ring, the plurality of apertures of the first wick layer being formed between the plurality of strips of the first wick layer; wherein the second wick layer comprises a ring, a tab located in a central area of the ring, and a plurality of strips interconnecting the tab and the ring, the plurality of apertures of the second wick layer being formed between the plurality of strips of the second wick layer; and wherein the plurality of strips of the first wick layer are staggered with the plurality of strips of the second wick layer.