| abstract |
A brush scrubbing apparatus is made up of a wafer holder which retains a wafer, a brush which removes a particle on the wafer, a driver which rotates at least one of the wafer holder and the wafer, an alignment mechanism which defines a relative position between the brush and the wafer holder, and controller which controls the alignment mechanism responding to a driving power supply voltage in the driver. The brush scrubbing apparatus can precisely get the reference position for deciding the pushing distance without using the eye measurement. |