Patent ID: 8215969
Filing Date: 2012-07-10
Classification: H01L,H01R,H05K,Y10S,Y10T

Abstract:
1. A contact structure disposed on a substrate, comprising: at least one pad disposed on the substrate; at least one polymer bump disposed on the substrate, the polymer bump having a bottom surface, a curve surface and a straight surface, the bottom surface being on the substrate, the curve surface having a first edge connecting with the bottom surface and a second edge connecting with the straight surface, an included angle between the straight surface and the substrate being from 30 to 150 degrees; and at least one conductive layer covering the polymer bump and electrically connecting the pad, wherein the conductive layer covers the curve surface and the straight surface of the polymer bump and covers the substrate besides the polymer bump, and wherein the conductive layer has at least a long side and at least a short side, and the curve surface and the straight surface of the polymer bump are both in a cross-sectional view of the polymer bump along an extending direction of the long side of the conductive layer, such that the polymer bump in said cross-sectional view is asymmetric.