Localized backside chip cooling with integrated smart valves

摘要

An integrated circuit device is disclosed. The device comprises a die that has functional units on a first surface and a cooling system arranged adjacent a second surface opposite the first surface. The cooling system comprises a least one microchannel to contain a cooling liquid and to allow flow of the cooling liquid and at least one reservoir arranged adjacent to a region of the die. There is at least one valve between the reservoir and the microchannel to allow the cooling liquid to flow into the reservoir wherein flow of the cooling liquid depends upon a temperature of the die region.