Patent ID: 6903022
Filing Date: 2005-06-07
Classification: H01L

Abstract:
1. A method of forming a contact hole, comprising steps of: providing a semiconductor substrate having a first gate conductive structure, a second gate conductive structure, a third gate conductive structure and a fourth gate conductive structure in sequence, wherein the second gate conductive structure and the third gate conductive structure are formed within an active area; forming a conductive liner conformally on the substrate between the second gate conductive structure and the third gate conductive structure; forming an inter-layered dielectric (ILD) layer on the entire surface of the substrate to cover the conductive liner and fill the gap between the first gate conductive structure and the second gate conductive structure, the gap between the second gate conductive structure and the third gate conductive structure, and the gap between the third gate conductive structure and the fourth gate conductive structure; and forming a bitline contact hole in the ILD layer to expose the conductive liner.