Silicon wafer edge protection device
US9964864B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2015 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Dec 27, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/709
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A silicon wafer edge protection device having: a horizontal motion assembly; vertical motion assembly; speed regulating device, which is in signal connection with the vertical motion assembly and used for regulating vertical motion assembly motion speed; flexible bumper assembly, which is connected to the horizontal motion assembly and vertical motion assembly and used for reducing the amplitude of vibration of the silicon wafer edge protection device when a collision occurs; and control device, which is in signal connection with the speed regulating device and used for sending a control signal to the speed regulating device to control motion of the vertical motion assembly. The silicon wafer edge protection device can prevent a wafer stage from undergoing an instantaneous strong impact and prevent a silicon wafer from being crushed. When a collision occurs, the wafer stage and the silicon wafer can be protected. Production efficiency is also improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.