Patent ID: 7384823

Claim:
A method for forming a storage node contact, the method comprising the steps of: providing a substrate being formed with gates and source/drain regions; forming an oxide film on the substrate between adjacent gates; forming a landing plug poly over the oxide film between the gates and exposing a surface of the gates; forming an insulating interlayer over the landing plug poly and the gates; etching the insulating interlayer to form a storage node contact hole which exposes the landing plug poly; etching the landing plug poly exposed through the storage node contact hole and etching the oxide film such that the landing plug poly and the oxide film are removed thereby forming a vacant portion below the storage node contact hole, wherein the substrate is exposed to the vacant portion, the oxide film preventing the substrate from being etched; and filling up a polysilicon film within the vacant portion and the storage node contact hole, wherein the polysilicon film is in contact with the substrate that is exposed to the vacant portion.