Patent ID: 6737748
Filing Date: 2004-05-18
Classification: H01L

Abstract:
In a stacked via having a first layer, a second layer, and an intermediate layer, a contact structure extending through the first layer, the second layer, and the intermediate layer for electrically connecting regions of the semiconductor structure, the contact structure comprising:a first contact hole filling in the first layer; a second contact hole filling in the second layer; and an intermediate structure in the intermediate layer disposed between the first layer and the second layer and connecting said first contact hole filling with said second contact hole filling, said intermediate structure forming an interconnect having a length between longitudinal ends thereof, said interconnect having a contact area at each of said longitudinal ends with a contact area width perpendicular to said length, and a connecting structure connecting said contact areas, said connecting structure having a connecting structure area with a connecting structure area width perpendicular to said length, said contact area width being greater than said connecting structure area width.