CMP platen with patterned surface
US6220942A · kind A · utility
47Cited by
14References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Apr 2, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B37/16
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A chemical mechanical polishing system is provided having one more polishing stations. The polishing stations include a platen and pad mounted to an upper surface of the platen. The upper surface of the platen is patterned to define a raised area and a recessed area. The raised area provides a rigid mounting surface for the pad and the recessed area provides the pad a desired degree of flexibility and compliance of the pad when brought into contact with a substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.