Patent ID: 9653323
Date: 2017-05-16
CPC Classifications: C25D,H01L,H05K

Claim:
1. A manufacturing method of substrate structure, comprising: providing a conductive carrier; forming a first photoresist layer on the conductive carrier, wherein the first photoresist layer is patterned to form a plurality of first openings exposing the conductive carrier; forming a first metal layer in the plurality of first openings; forming a second photoresist layer on the first photoresist layer and the first metal layer, wherein the second photoresist layer is patterned to form a plurality of second openings exposing the first metal layer; forming a second metal layer in the plurality of second openings; and forming a third metal layer on the second metal layer; wherein each of the second metal layer and the third metal layer has a first surface and a second surface opposite the first surface, the first surface of the third metal layer is connected to the second surface of the second metal layer, and a surface area of the first surface of the third metal layer is larger than a surface area of the second surface of the second metal layer.