Chemical mechanical planarization carrier system
US11376705B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2019 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Nov 30, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B37/005
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A system includes a CMP carrier that includes a resilient flexible membrane upon which a wafer is mounted, at least three ports for supplying air to the resilient flexible membrane to pneumatically pushing on the wafer through pressure applied throughout the surface area of the resilient flexible membrane to have more uniform pressure. Each port provides pressure to different components of the carrier to adjust pressure or vary pressure during processing of the wafer. Further, the system includes a processor and software program for implementing the CMP carrier with existing CMP machines. The software application converts the air pressure applied to the carrier into units that allow the CMP machine to receive expected data and operate in accordance with the existing commands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.