Patent ID: 9548223
Date: 2017-01-17
CPC Classifications: H01L

Claim:
1. Device for processing wafer-shaped articles, comprising a process chamber and a rotary chuck located within said process chamber, wherein said rotary chuck is adapted to be driven without physical contact through a magnetic bearing, said rotary chuck comprising a series of gripping pins adapted to hold a wafer shaped article in a position depending downwardly from said rotary chuck, said rotary chuck further comprising a plate that rotates together with said rotary chuck, said plate being positioned above an area occupied by a wafer-shaped article when said rotary chuck is in use, and said plate shielding upper surfaces of said process chamber from liquids flung off of a wafer-shaped article during use of said rotary chuck; wherein said magnetic bearing comprises a stator located entirely outside the process chamber, and a rotor located entirely inside the process chamber.