Patent ID: 9478511
Filing Date: 2016-10-25
CPC Classification: H01L

Claim Text:
1. A semiconductor device comprising: a contact pad on a surface of a substrate; a dielectric layer over the surface of the substrate with a first opening exposing the contact pad; a seed layer above the dielectric layer, the seed layer covering the first opening of the dielectric layer and electrically connected to the contact pad; and a conductive layer over the seed layer, wherein the conductive layer includes a peripheral portion, the peripheral portion comprising: a first segment including an outermost edge of the conductive layer and having a first thickness, a second segment including a second thickness, the second thickness greater than the first thickness, and an intermediate segment having a sloped sidewall connecting a first upper surface of the first segment and a second upper surface of the second segment, wherein the first and second upper surfaces are substantially parallel to a top surface of the substrate.