Patent ID: 9691723
Date: 2017-06-27
CPC Classifications: H01L

Claim:
1. A method of forming a connector, the method comprising: forming a first layer of photoresist over an interconnect structure; patterning the first layer of photoresist with a first pattern to form a patterned first layer of photoresist, wherein the first pattern corresponds to a first portion of a connector; plating a first metal layer through the patterned first layer of photoresist to form the first portion of the connector, the first portion of the connector comprising a first width; forming a second layer of photoresist over the interconnect structure and the first portion of the connector, wherein at least a portion of the second layer of photoresist is disposed below an upper-most surface of the first layer of photoresist; patterning the second layer of photoresist with a second pattern to form a patterned second layer of photoresist, wherein the second pattern corresponds to a second portion of the connector; and plating a second metal layer through the patterned second layer of photoresist to form the second portion of the connector over the first portion of the connector, the second portion of the connector comprising a second width, the second width being less than the first width.