Patent ID: 8970001
Filing Date: 2015-03-03
Classification: H01L

Abstract:
1. A structure comprising: a first metal feature; a passivation layer comprising a portion overlapping the first metal feature, wherein the passivation layer comprises a non-low-k dielectric material; a first polymer layer over the passivation layer; a first Post-Passivation Interconnect (PPI) extending into the first polymer layer to electrically couple to the first metal feature; a guard ring comprising a second PPI, wherein the guard ring is electrically grounded, and wherein the second PPI substantially encircles the first PPI; and a metal line extending from outside a region encircled by the guard ring to inside the region, wherein the metal line is at a same level as, and is electrically coupled to, the first PPI, and wherein the guard ring forms a partial ring having a break therein, with the metal line extending through the break.