Method of manufacturing semiconductor device and apparatus for cleaning substrate
US6890391B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2003 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Oct 8, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S134/902
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
The stripping agent is sprayed from the tip of the nozzle 33 onto the wafer surface, while the first supply nozzle 33 is actuated to scan from the central portion of the wafer to the outer portion thereof. This operation provides the situation, in which the interface of the residual droplet 38 is pulled back from the center of the wafer to the outer portion of the wafer by the surface tension of the stripping agent supplied from the nozzle. Meanwhile, the second supply nozzle 36 also scans at a same scanning speed as the first supply nozzle 33 scans. Vapor IPA is sprayed from the orifice of the second supply nozzle 36. This provides that vapor IPA is sprayed onto the wafer surface immediately after the stripping agent is sprayed thereon from the first supply nozzle 33, and the residual stripping agent on the wafer surface is efficiently replaced with IPA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.