Patent ID: 8304339
Filing Date: 2012-11-06
Classification: H01L

Abstract:
1. A method of making a semiconductor device, comprising: providing a semiconductor wafer including a plurality of active or passive devices formed on the semiconductor wafer; forming a first conductive layer over the semiconductor wafer electrically connected to the active or passive devices; forming an insulating layer over the first conductive layer and semiconductor wafer; removing a portion of the insulating layer to expose the first conductive layer; forming a second conductive layer over the first conductive layer and insulating layer; forming a third conductive layer over the second conductive layer; forming a fourth conductive layer over the third conductive layer; forming a single core pillar including a hollow interior region over the fourth conductive layer and centered over first conductive layer, the single core pillar including a width less than a width of the exposed first conductive layer; forming a fifth conductive layer over the fourth conductive layer and single core pillar and within the hollow interior region; forming a sixth conductive layer over the fifth conductive layer and single core pillar and within the hollow interior region; and forming a bump material over the sixth conductive layer.