Method of manufacturing heat sink and heat sink
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United States of America Patent
Stats
-
Jul 19, 2022
Grant Date -
May 13, 2021
app pub date -
Oct 1, 2020
filing date -
Nov 13, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A method of manufacturing a heat sink includes a rib portion forming step of forming a rib portion on a substrate having a flat plate shape in such a manner that a first groove and a second groove are formed on a front surface side of the substrate by plastically deforming the substrate by a press thus forming the rib portion in a region sandwiched between the first groove and the second groove. The method further includes a back surface protruding ridge portion cutting removal step of removing protruding ridge portions formed on a back surface side of the substrate by cutting. The method further includes a fin forming step of forming a plurality of fins by working the rib portion; and a heat sink separating step of obtaining the heat sink by separating a portion within a predetermined range which includes the fins from the substrate.
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