Patent ID: 8330280
Filing Date: 2012-12-11
Classification: H01L

Abstract:
1. A bump structure disposed on a substrate, the substrate having a plurality of bond pads and a protecting layer, wherein the protecting layer having a plurality of openings that reveal the bond pads, the bump structure electrically connected with each of the bond pads comprising: a first polymer block disposed on the bond pad and the protecting layer and comprising a first top surface and a first connection slot recessed from the first top surface, wherein the first polymer block is an individual block; a second polymer block disposed on the bond pad and the protecting layer and comprising a second top surface and a second connection slot recessed from the second top surface, wherein the second polymer block is an individual block; a first groove located between the first polymer block and the second polymer block and revealing the bond pad, wherein the first groove is in communication with the first connection slot of the first polymer block and the second connection slot of the second polymer block; an under bump metallurgy layer covering the bond pad, the first polymer block and the second polymer block to form a second groove, a third connection slot and a fourth connection slot; and a connection metal layer covering the under bump metallurgy layer to form a third groove, a fifth connection slot and a sixth connection slot, wherein the third groove is in communication with the fifth connection slot and the sixth connection slot, the second groove of the under bump metallurgy layer is located between the first groove and the third groove, the third connection slot of the under bump metallurgy layer is located between the first connection slot and the fifth connection slot, and the fourth connection slot of the under bump metallurgy layer is located between the second connection slot and the sixth connection slot.