Wafer cleaning device and tray for use in wafer cleaning device
US6616774B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2001 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Nov 6, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S438/906
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
There are provided a band-shaped tray 12 having grasping grooves 12a for grasping opposite side ends of wafers 1, and a cleaning tank 20 to which the wafers 1 inserted in the tray 12 are conveyed by a conveyor robot 2 to be cleaned. The cleaning tank 20 is provided with guides 22 for mounting the tray 12 in the tank, a bottom portion 26 formed substantially in V-shape conforming to the bottom-face shape of the wafer 1, and flow ports 24 via which cleaning fluid is supplied into the tank. An outer side face of the cleaning tank 20 is provided with an overflow tank 30 for containing the cleaning fluid overflowing from the cleaning tank 20, and the overflow tank 30 is provided with a circulation line 32 for circulating the cleaning fluid again into the cleaning tank 20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.