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US 2023/0264284 A1Published application
Hybrid base plate and manufacturing method therefor
AssigneeAmosense Co., Ltd.
InventorJihyung LEE
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Abstract
The present invention relates to a hybrid base plate and a manufacturing method therefor. Metal sheets of different materials having excellent thermal conductivity can be joined to have a thickness favorable for heat dissipation, and by arranging a metal sheet of a material with a low coefficient of thermal expansion between metal sheets with a high coefficient of thermal expansion, there is an effect of preventing warpage when manufacturing a large-area heat sink.
Claims14
A hybrid base plate comprising:
- a first metal sheet;
- a second metal sheet brazing-bonded to a top surface of the first metal sheet;
- and
- a third metal sheet brazing-bonded to a bottom surface of the first metal sheet,
- wherein the second metal sheet and the third metal sheet are formed of the same metal material, and the first metal sheet is formed of a metal material different from the second metal sheet and the third metal sheet.
2 more elements
A method for manufacturing a hybrid base plate, the method comprising steps of:
- preparing a first metal sheet;
- preparing a second metal sheet and a third metal sheet which are each formed of a metal material different from the first metal sheet;
- forming a seed layer on each of top and bottom surfaces of the first metal sheet;
- forming a brazing filler layer on the seed layer;
- disposing the second metal sheet and the third metal sheet respectively on the brazing filler layers;
- and
- performing brazing bonding.
4 more elements
Dependencies are inferred from the claim text.