Patent ID: 7110258
Filing Date: 2006-09-19
Classification: F28D,F28F,H01L,H05K

Abstract:
1. A heat dissipating microdevice comprising: a board including an insulator layer that has a first surface and a second surface facing said first surface in a first direction, a conductor layer formed on said first surface, and a cover member disposed on said second surface, said board having a first area and a second area facing said first area in a second direction transverse to the first direction, said first area being adapted to be placed in thermal contact with a heat source; a fluid microsystem formed in said insulator layer of said board, and including first and second micro-channel structures that are disposed respectively in said first and second areas of said board, at least one of said first and second micro-channel structures being bounded by at least one of said conductor layer and said cover member, said first micro-channel structure including a plurality of parallel channels, each of which includes first and second end positions, first and second micro-conduit structures that permit fluid communication between said first and second micro-channel structures, said first micro-conduit structure including a first end section in fluid communication with said second micro-channel structure and a second end section extending to and in fluid communication with said first end portions of said channels of said first micro-channel structure, said second micro-conduit structure including a first end section in fluid communication with said second end portions of said channels of said first micro-channel structure and a second end section extending to and in fluid communication with said second micro-channel structure, and the fluid microsystem further including a receiving microstructure that is disposed between and that permits fluid communication between said first micro-channel structure and said first micro-channel structure and second micro-conduit structure, that includes a first end portion extending to and in fluid communication with said second end portions of said channels of said first micro-channel structure and a second end portion extending to and in fluid communication with said first end section of said second micro-conduit structure, and that has a cross-section larger than those of said first micro-channel structure and said second micro-conduit structure, said first micro-channel structure including a plurality of parallel channels, each of which includes first and second end portions, said second end section of said first micro-conduit structure extending to said first end portion of said channel of said first micro-channel structure, said receiving microstructure having a diverging section that serves as said first end portion thereof and a converging section that serves as said second end portion thereof, said second end portions of said channels of said first micro-channel structure extending to said diverging section of said receiving microstructure, and a coolant contained in said fluid microsystem, said coolant flowing from said second micro-channel structure to said first micro-channel structure through said first micro-conduit structure, and from said first micro-channel structure back to said second micro-channel structure through said second micro-conduit structure.