COMPOSITE LAMINATE AND ELECTRONIC DEVICE

摘要

Problem: To provide a metal plate, a composite laminate and the like, each of which has excellent long-term reliability.;Resolution means: A composite laminate (12) includes a first metal layer (1), a second metal layer (2), a third metal layer (3), and a fourth layer (4). The first metal layer (1) contains copper. The second metal layer (2) is arranged on the lower surface of the first metal layer (1). The third metal layer (3) is arranged on the lower surface of the second metal layer (2), and contains silver, at least one metal selected from a first group made up of Sn, Al, and Ga, and at least one metal selected from a second group made up of In and Sb. The fourth layer (4) is arranged on the lower surface of the third metal layer (3). The third metal layer (3) has a metal portion (2A) that partially penetrates the second metal layer (2) from the third metal layer (3).

主权项

1. A composite laminate, comprising:
a first metal layer containing copper; a second metal layer arranged on a lower surface of the first metal layer; a third metal layer that is arranged on a lower surface of the second metal layer, and contains silver, at least one metal selected from a first group made up of Sn, Al, and Ga, and at least one metal selected from a second group made up of In and Sb; and a fourth layer arranged on a lower surface of the third metal layer; wherein the third metal layer contains a metal portion that partially penetrates the second metal layer.