Apparatus for cleaning substrate
US6248009A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2000 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Feb 18, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L21/67051
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a substrate cleaning apparatus, and more particularly to a substrate cleaning apparatus suitable for cleaning a substrate which requires a high level of cleanliness, such as a semiconductor wafer, a glass substrate, a liquid crystal panel, etc. The substrate cleaning apparatus comprises a substrate holder for holding a substrate while rotating the substrate in a substantially horizontal plane, a cleaning device for scrubbing a surface to be cleaned of the substrate, a cleaning device holder for holding the cleaning device rotatably about its own axis, the cleaning device having a shaft and a cleaning member disposed around the shaft, the cleaning member being permeable to a cleaning liquid, the shaft having an axially extending shaft hole and a cleaning liquid ejection port extending radially therethrough from the shaft hole, and a fluid-lubricated bearing disposed between the shaft and the cleaning device holder in at least one end thereof and lubricated by a cleaning liquid as a lubricating fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.