Patent ID: 8484845

Claim:
A manufacturing method of a heat conducting structure with a coplanar heated portion, comprising the steps in the order of: a) providing a plurality of U-shaped heat pipes ( 10 ) each having an evaporating section ( 11 ) and two condensing sections respectively extended from two ends of the evaporating section, a first mold ( 20 ) having at least two sets of four concave cambers, a second mold ( 30 ) having four planar surfaces ( 311 , 321 ), and a tool having a plurality of through holes; b) using one set and then the other set of the concave cambers of the first mold ( 20 ) to progressively compress the evaporating section ( 11 ) of each of the heat pipes ( 10 ) located in a fixed position to form four convex surfaces on four sides of each of the heat pipes ( 10 ), respectively; c) using the planar surfaces ( 311 , 321 ) of the second mold ( 30 ) to compress the four convex surfaces of each of the heat pipe ( 10 ) located in another fixed position to form two opposite contact planes and two opposite attaching planes in a rectangular shape; d) coating an adhesive ( 50 ) onto at least one of two corresponding contact planes of any two adjacent heat pipes ( 10 ); e) connecting the contact planes ( 112 ′) of the heat pipes ( 10 ) to make the attaching planes ( 113 ′) of the heat pipes ( 10 ) coplanar; and f) disposing evaporating sections of the heat pipes on a base of the tool to have condensing sections respectively passing through the through holes, providing a press board and a clamp board of the tool for compressing and positioning the evaporating sections, and then using a C-shaped clamp of the tool for fixing the press board; and g) after the adhesive is solidified to combine the evaporating sections, the heat conducting structure of the heat pipes with the coplanar heated portion is complete.