Patent ID: 7808781
Filing Date: 2010-10-05
Classification: F28F,H01L

Abstract:
1. An electronic apparatus, comprising: a chip level package structure comprising a package substrate, first and second IC (integrated circuit) chips flip-chip mounted on a first surface of the package substrate; and a cooling module thermally coupled to the first and second IC chips, the cooling module comprising a liquid coolant inlet port, a liquid coolant outlet port, and a coolant flow path extending within the cooling module from the liquid coolant inlet port to the liquid coolant outlet port; wherein the first IC chip is thermally coupled to a first portion of the cooling module which is cooled by coolant flowing in the coolant flow path including a micro channel cooler disposed in the cooling module and in contact with the first IC chip, and wherein the second IC chip is thermally coupled to a second portion of the cooling module which is cooled by heated coolant fluid flowing in the coolant flow path, wherein the second IC chip is disposed away from the micro channel cooler, such that the cooling module provides different thermal resistances to the first IC chip and the second IC chip, respectively, wherein the cooling module comprises: a planar heat conducting device having first and second opposing surfaces, and an aperture formed through the planar heat conducting device between the first and second opposing surfaces thereof; a cooler assembly disposed in the aperture of the planar heat conducting device wherein the cooler assembly comprises first and second opposing surfaces, a cooler assembly inlet port and a cooler assembly outlet port disposed on the first surface, and a coolant flow path extending through the cooler assembly from the cooler assembly inlet port to the cooler assembly outlet port; and a fluid manifold comprising an inlet plenum and an outlet plenum which define portions of the coolant flow path of the cooling module, wherein the inlet and outlet plenums are configured such that fluid flow in the inlet and outlet plenums is in direct contact with the planar heat conducting device; wherein the planar heat conducting device is stacked on the chip package structure where the backside of the first IC chip is thermally bonded to the second surface of the cooler assembly and where the second IC chip is thermally coupled to a region of the second surface of the planar heat conducting device; a first fluid connection between the cooler assembly input port and the inlet plenum; and a second fluid connection between the cooler assembly output port and the outlet plenum.