Patent ID: 9700930
Date: 2017-07-11
CPC Classifications: B21D,F28D,F28F,H01L,Y10T

Claim:
1. A manufacturing method of a heat dissipation device, comprising steps of: preparing a first board body and a second board body, wherein a planar raised section is selectively disposed on an outer surface of the first board body or the second board body for directly contacting a flat surface of a heat source; disposing at least one capillary structure on and multiple support pillars extending between inner faces of the first and second board bodies; mating the first and second board bodies with each other to form a heat dissipation device with a closed chamber, the support pillars being disposed in the closed chamber, vacuuming the closed chamber, filling a working fluid into the closed chamber and sealing the heat dissipation device, wherein two ends of each of the support pillar are respectively connected with the capillary structure on the inner faces of the first and second board bodies; and mechanically processing the first and second board bodies to form a fixing hole through the closed chamber in the first and second board bodies and a corresponding support pillar in a position where a selected support pillar is positioned.