Patent ID: 9120190
Filing Date: 2015-09-01
Classification: B23P,F28D,F28F,H01L,Y10T

Abstract:
1. A method for producing a microchannel heat pipe on a substrate, the method comprising: co-extruding a primary material and a secondary material onto a surface of the substrate such that the first and second materials form an elongated composite structure having a first end and a second end, the elongated composite structure including first and second elongated side portions extending between the first and second ends and consisting of the primary material, and a central bead consisting of the secondary material that entirely fills an elongated central region disposed between first and second elongated side portions; removing the central bead from the elongated central region, thereby defining an elongated central channel disposed between spaced-apart first and second elongated side wall portions such that the elongated central region extends between first and second end openings respectively defined at the first end and the second end; disposing a working fluid inside the elongated central channel; and sealing the elongated central channel such that the working fluid is contained inside the elongated central channel, wherein co-extruding the primary and secondary materials further comprises: extruding a portion of said primary material over the central bead to form an elongated upper portion extending between the first and second elongated side portions during said co-extrusion such that a central region of the elongated upper portion is supported by the central bead; and curing the primary material such that said cured first and second elongated side portions respectively form first and second rigid side walls, and such that said cured elongated upper portion forms a rigid upper wall extending between upper ends of said first and second side walls, whereby subsequent removal of the central bead forms a rigid pipe body having an elongated central channel defined by said upper wall, said first and second side walls, and a portion of the substrate surface, and wherein the method further comprises fabricating an integrated circuit onto said substrate before co-extruding said primary material and said secondary material.