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US 9,960,289 B2Granted
Solder joint material and method of manufacturing the same, soldering member and solar cell module
AssigneeHitachi Metals, Ltd.
InventorsHideyuki Sagawa, Keisuke Fujito, Takayuki Tsuji, Hiromitsu Kuroda
Life of this patent
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Abstract
A solder joint material includes a copper-based metal material including mainly a copper, a surface-treated layer that is provided on the copper-based metal material and includes an amorphous layer including oxygen and a metal with a higher oxygen affinity than a copper, and a Sn-based solder plating layer provided on the surface-treated layer.
Claims13
A solder joint material, comprising:
- a copper-based metal material comprising mainly copper,
- a surface-treated layer coextensive with an upper surface of the copper-based metal material and comprising an amorphous layer comprising oxygen and a metal with a higher oxygen affinity than the copper, the metal consisting of zinc;
- and
- a Sn-based solder plating layer provided on the surface-treated layer.
1 more element
A solar cell module, comprising:
- a soldering member, including:
- a copper-based metal material comprising mainly a copper;
- and a surface-treated layer coextensive with an upper surface of the copper-based metal material and comprising an amorphous layer comprising oxygen and a metal with a higher oxygen affinity than the copper, the metal consisting of zinc, wherein the surface-treated layer has a thickness of not less than 8 nm and not more than 300 nm;
- and
- a solar cell soldered by the soldering member.
2 more elements
A solder joint material, comprising
- a copper-based metal material comprising mainly copper,
- a surface-treated layer coextensive with an upper surface of the copper-based metal material and comprising an amorphous layer comprising the copper diffused from the copper-based metal material, a metal with a higher oxygen affinity than the copper, and oxygen, the metal consisting of zinc, and a Sn-based solder plating layer provided on the surface-treated layer.
Dependencies are inferred from the claim text.