The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 19, 2002
Filed:
Mar. 29, 1999
Abstract
A bit line structure for semiconductor devices, and a fabrication method thereof are provided. In this method, a first conductive film pattern, which fills a first contact hole and is used as a bit line, is formed on a first dielectric film pattern having the first contact hole formed on a semiconductor substrate. A lower part protecting layer pattern, comprised of an anti-reflectance coating (ARC) layer used in a process for patterning the first dielectric layer pattern, is formed on the interface between the first conductive layer pattern and the first dielectric layer pattern. A spacer for covering the sidewall of the first conductive film pattern is formed. An upper part protecting layer pattern comprised of an upper ARC layer is formed to cover the upper part of the first conductive layer pattern. A second dielectric layer pattern having a second contact hole is formed to cover the first conductive layer pattern. A second conductive layer pattern filling the second contact hole is formed and used as a storage node of a capacitor.