Method and apparatus for chemical mechanical polishing
US6558236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2001 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Jun 26, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24D13/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Generally, a method and apparatus for polishing a substrate is provided. In one embodiment, an apparatus for polishing a substrate includes a polishing material having a fluid disposed thereon. The polishing material has a plurality of elements extending from a backing. The fluid that fills the entire volume between the elements comprising the polishing material has a viscosity between about 100 to about 10,000 centipoises. The fluid allows generation of a hydrostatic force that ensures the full and completed envelopment of fluid surrounding the fixed abrasive elements when polishing, thus substantially reducing the deformation of the elements, resulting in extended polishing material life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.