Electronic apparatus and method for manufacturing electronic apparatus
AssigneeFuji Electric Co., Ltd.
InventorsNarumi Sato, Yuta Tamai
Life of this patent
Estimating the term…
Abstract
Provided is an electronic apparatus including a metal wiring. The metal wiring includes a plurality of first regions covered with a solder layer, a second region provided between two first regions of the plurality of first regions, and a third region having a nitrogen amount of 20 atoms % or more. An oxygen amount is largest in the second region, followed by at least one of the plurality of first regions, and then by the third region. The nitrogen amount may be largest in the third region, followed by at least one of the plurality of first regions, and then by the second region.
Claims20
An electronic apparatus comprising:
- a metal wiring, wherein
- the metal wiring includes:
- a plurality of first regions covered with a solder layer;
- a second region provided between two of the plurality of first regions;
- and
- a third region whose nitrogen amount is 20 atoms % or more, and
- an oxygen amount is largest in the second region, followed by at least one of the plurality of first regions, and then by the third region.
A method for manufacturing an electronic apparatus including a metal wiring, the method comprising:
- irradiating the metal wiring with a first laser beam;
- and
- irradiating the metal wiring with a second laser beam, the second laser beam having an energy density different from an energy density of the first laser beam, wherein
- the irradiating with the first laser beam and the irradiating with the second laser beam cause the metal wiring to be formed with:
- a plurality of first regions;
- a second region provided between two of the plurality of first regions;
- and
- a third region whose nitrogen amount is 20 atoms % or more,
- the method further comprises forming a solder layer so as to cover the plurality of first regions, and
- an oxygen amount is largest in the second region, followed by at least one of the plurality of first regions, and then by the third region.
Dependencies are inferred from the claim text.