| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method for a fan having a high heat conduction efficiency, anti-oxidation, and anti-smear characteristics. SOLUTION: The fan includes a base and a plurality of heat radiating chips provided on the base. An oxide film layer for improving the heat radiation ratio is formed on the surface of the base and/or the heat radiating chips by an anodic oxidation process. COPYRIGHT: (C)2011,JPO&INPIT
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