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:
May. 06, 2003
Filed:
Jul. 31, 2002
Lawrence Chen, Taipei, TW;
Chang-Tai Chiao, Hsin Chu, TW;
Young Tong Tsai, Fremont, CA (US);
Francis Ko, Taichuang, TW;
Chuan-Kai Lo, Hsin Chu, TW;
Lam Research Corporation, Fremont, CA (US);
Abstract
The present invention reveals a semiconductor dual damascene etching process, which uses a confined plasma etching chamber to integrate all dual damascene steps such as via hole etching, photoresist stripping and barrier layer removal which originally performed in various reactors as a continuous procedure in the confined plasma chamber. The confined plasma chamber including a confinement ring surrounding a wafer and an anti-etching upper electrode plate performs the steps mentioned above under clean mode. The present invention can not only reduce the time period required by the semiconductor dual damascene process but also greatly reduce the manufacturing cost.