Semiconductor processing apparatus with simultaneously movable stages
US8544317B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2009 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | May 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L21/68
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and apparatus provide for simultaneously moving multiple semiconductor wafers in opposite directions while simultaneously performing processing operations on each of the wafers. The semiconductor wafers are orientated in coplanar fashion and are disposed on stages that simultaneously translate in opposite directions to produce a net system momentum of zero. The die of the respective semiconductor wafers are processed in the same spatial sequence with respect to a global alignment feature of the semiconductor wafer. A balance mass is not needed to counteract the motion of a stage because the opposite motions of the respective stages cancel each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.