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:
Sep. 13, 2005
Filed:
Sep. 23, 2003
Fang-yu Yeh, Taoyuan, TW;
Chun-che Chen, Kaohsiung, TW;
Fang-Yu Yeh, Taoyuan, TW;
Chun-Che Chen, Kaohsiung, TW;
ProMOS Technologies Inc., Hsinchu, TW;
Abstract
A method of forming a contact opening is provided. First, a substrate having a plurality of conductive structures formed thereon is provided. An ion implantation is performed. Thereafter, a thermal treatment is carried out to form a liner layer on the sidewall of the conductive structure and the exposed substrate. The liner layer on the sidewall of the conductive structure has a thickness smaller than the liner layer on the substrate surface. A spacer is formed on each side of the conductive structure and then an insulation layer is formed over the substrate. The insulation layer is patterned to form a contact opening between two neighboring conductive structures. Since the liner layer on the sidewall of the conductive structures is already quite thin, there is no need to reduce thickness through an etching operation and uniformity of the liner layer on the substrate can be ensured.