Patent ID: 6545358
Filing Date: 2003-04-08
Classification: H01L

Abstract:
An integrated circuit structure comprising:a first conductive layer on a substrate wherein the first conductive layer has a recess in a surface thereof opposite the substrate; a first plug in the recess wherein the first plug extends onto the surface of the first conductive layer outside the recess and opposite the substrate; an insulating layer on the first conductive layer and on the first plug wherein the first insulating layer has a hole therein that exposes a portion of the first plug; a second plug in the hole; and a second conductive layer on the insulating layer and on the second plug opposite the substrate, wherein the first plug includes a first plug surface over the recess on the first conductive layer and the second plug includes a second plug surface on the exposed portion of the first plug, and wherein the first plug surface is larger than the second plug surface.