Patent ID: 7962990

Claim:
A substrate cleaner, comprising: a chamber body defining a processing volume, wherein the chamber body has a top opening configured to allow passage of a substrate; first and second scrubber brush assemblies movably disposed in the processing volume, wherein the first and second scrubber brush assemblies are configured to contact and clean opposite surfaces of a substrate disposed in the processing volume; and a positioning assembly configured to simultaneously adjust positions of the first and second scrubber brush assemblies, wherein the positioning assembly makes substantially the same amount of adjustment to the first and second scrubber brush assemblies in mirror symmetry, and the positioning assembly comprises: a sliding block configured to slide along a track coupled to the chamber body, wherein the first and second scrubber brush assembly are positioned substantially symmetrical about the track; a first link, wherein a first end of the first link is connected to the sliding block, and a second end of the first link is connected with the first scrubber brush assembly; and a second link, wherein a first end of the second link is connected to the sliding block, a second end of the second link is connected with the second scrubber brush assembly, and the first and second links and the sliding block limit motion of the first and second scrubber brush assemblies to be substantially symmetrical.