Patent ID: 7044201

Claim:
A substantially flat heat transferring device, which includes a vaporization part where a liquid-phase coolant is vaporized and a condensing part where vapor generated in the vaporization part condenses into liquid, the liquid-phase coolant moving from the condensing part to the vaporization part by capillary force, the substantially flat heat transferring device comprising: a lower plate, the bottom of which contacts a heat source; an upper plate which is hermetically coupled with the lower plate along its edge to form a void therebetween; a wick plate which is provided between the upper plate and the lower plate and is maintained in position relative to the lower plate by surface tension of the liquid-phase coolant; and a liquid-phase coolant which transfers heat transferred from the heat source from the vaporization part to the condensing part circulating between the vaporization part and the condensing part, wherein the wick plate includes a plurality of holes and a plurality of planar wicks and makes the liquid-phase coolant flow from the condensing part to the vaporization part by capillary force between itself and the lower plate.