发明申请
- 专利标题: EDGE ELECTRODES WITH VARIABLE POWER
- 专利标题(中): 具有可变功率的边缘电极
-
申请号: US11758576申请日: 2007-06-05
-
公开(公告)号: US20090114244A1公开(公告)日: 2009-05-07
- 发明人: Gregory S. Sexton , Andrew D. Bailey, III , Andras Kuthi
- 申请人: Gregory S. Sexton , Andrew D. Bailey, III , Andras Kuthi
- 主分类号: C25F1/00
- IPC分类号: C25F1/00
摘要:
The embodiments provide structures and mechanisms for removal of etch byproducts, dielectric films and metal films on and near the substrate bevel edge, and chamber interior to avoid the accumulation of polymer byproduct and deposited films and to improve process yield. In an exemplary embodiment, a plasma processing chamber configured to clean a bevel edge of a substrate is provided. The plasma processing chamber includes a bottom electrode configured to receive the substrate, wherein the bottom electrode is coupled to a radio frequency (RF) power supply. The plasma processing chamber also includes a top edge electrode surrounding an insulating plate opposing the bottom electrode. The top edge electrode is electrically grounded. The plasma processing chamber further includes a bottom edge electrode surrounding the bottom electrode. The bottom edge electrode opposes the top edge electrode. The top edge electrode, the substrate disposed on the bottom electrode, and the bottom edge electrode are configured to generate a cleaning plasma to clean the bevel edge of the substrate. The bottom edge electrode and the bottom electrode are electrically coupled to one another through an RF circuit tunable to adjust the amount of RF current going between the substrate disposed on the bottom electrode, the bottom edge electrode and the top edge electrode.
公开/授权文献
- US07938931B2 Edge electrodes with variable power 公开/授权日:2011-05-10
信息查询