Patent ID: 8143168
Filing Date: 2012-03-27
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising: forming a first conductive layer and a second conductive layer over a substrate; forming a first insulating layer over the first conductive layer and the second conductive layer; forming a second insulating layer including siloxane over the first insulating layer; etching the first insulating layer and the second insulating layer with a gas including hydrogen bromide in order to form a first opening and a second opening, wherein the first opening exposes an even surface of the first conductive layer, wherein the second conductive layer has a stepped portion, wherein the stepped portion includes an upper top surface of the second conductive layer and a lower top surface of the second conductive layer, wherein the second opening exposes at least a part of the upper top surface and a part of the lower top surface, and wherein a depth of the first opening is different from a depth of the second opening.