Patent ID: 7808787
Filing Date: 2010-10-05
Classification: H01L,Y10T

Abstract:
1. A heat spreader comprising: a) a first planar element of pyrolytic graphite having a relatively high thermal conductivity in a direction of a first lateral dimension of a first plane of the first planar element and in a thickness direction of the first planar element and having a relatively low thermal conductivity in a direction of second lateral dimension of the first planar element, and b) a second planar element of pyrolytic graphite having a relatively high thermal conductivity in a direction of a first lateral dimension of a second plane of the second planar element and in a thickness direction of the second planar element and having a relatively low thermal conductivity in a direction of a second lateral dimension of the second planar element, wherein at least a portion of a first side of the first planar element which extends in a direction out of the first plane of the first planar element adjoins at least a portion of a second side of the second planar element which extends in a direction out of the second plane of the second planar element.