Patent ID: 9000588
Filing Date: 2015-04-07
Classification: H01L

Abstract:
1. A method for defining regions on a substrate with different surface liquid tension properties comprising: providing a substrate with a main surface that has a first surface liquid tension property and is at least partially covered with a seed layer; forming at least one micro-bump on the seed layer leaving a portion of the seed layer exposed; exposing part of the main surface by patterning the exposed seed layer; forming from the seed layer at least one closed-loop structure that encloses a region of the main surface that includes the at least one micro-bump; and chemically treating the main surface of the substrate to provide a surface of the at least one closed-loop structure and the at least one micro-bump with a second surface liquid tension property that is substantially different from the first surface liquid tension property, wherein the second surface liquid tension property is liquid phobic.