Patent ID: 9380733
Filing Date: 2016-06-28
CPC Classification: H01L,H05K

Claim Text:
1. A cooling device for cooling a power module including first and second chips that generate heat, the cooling device comprising a heat sink including a base surface on which the power module is closely attached and mounted, wherein the heat sink includes: the first and second high heat conductors are each configured from a stacked anisotropic high heat conductor having a two-layer structure arranged along the base surface of the heat sink, a first layer is such that a direction in which a thermal conductivity is low is horizontal to a surface of the heat sink, a second layer is stacked such that a direction in which a thermal conductivity is low is horizontal to the surface of the heat sink and is perpendicular to the direction in which a thermal conductivity is low in the first layer, and the first and second chips are respectively in contact with one ends of the first and second high heat conductors via a wiring board and respectively connected to independent heat dispersion routes via the first and second high heat conductors.