发明名称 |
Applying different pressures through sub-pad to fixed abrasive CMP pad |
摘要 |
A chemical mechanical polishing (CMP) system includes a rotating polishing table including a platen providing at least two pressure zones having different pressures; a sub-pad positioned on the platen, the sub-pad including a plurality of openings allowing for transmission of the different pressures therethrough; a fixed abrasive pad positioned on the sub-pad; and a pressure-creating system sealingly coupled to the platen for creating a different pressure in the at least two pressure zones, wherein the different pressures create topography on the fixed abrasive pad. A sub-pad and related method are also provided. |
申请公布号 |
US8858300(B2) |
申请公布日期 |
2014.10.14 |
申请号 |
US201012702333 |
申请日期 |
2010.02.09 |
申请人 |
International Business Machines Corporation |
发明人 |
Cellier Glenn L.;Economikos Laertis;McCormack Timothy M.;Venigalla Rajasekhar |
分类号 |
B24B5/00;B24B37/00;B24B37/16;B24B37/24;B24B37/22 |
主分类号 |
B24B5/00 |
代理机构 |
Hoffman Warnick LLC |
代理人 |
Cai Yuanmin;Hoffman Warnick LLC |
主权项 |
1. A chemical mechanical polishing (CMP) system comprising:
a rotating polishing table including a platen providing at least two pressure zones having different pressures; a sub-pad positioned on the platen, the sub-pad including a plurality of openings allowing for transmission of the different pressures therethrough; a fixed abrasive pad positioned on the sub-pad; a pressure-creating system sealingly coupled by a manifold to the platen for creating a different pressure in the at least two pressure zones, wherein the manifold sealingly communicates through a plurality of circumferential grooves in a periphery of the platen, and wherein the different pressures create topography on the fixed abrasive pad; and a plurality of passages for conveying gas to the at least two pressure zones, wherein each passage conveys a gas at one of the different pressures, and wherein each passage comprises a connection to the pressure creating system and at least two branches for delivering a same pressure. |
地址 |
Armonk NY US |