Wafer edge cleaning utilizing polish pad material
First Claim
1. In a brush cleaning apparatus for cleaning a major surface of a wafer and including wafer drive wheels for rotating the wafer, the improvement comprising:
- wafer guide wheels supported proximate the wafer, with a polish pad material disposed on a circumference of the guide wheels, wherein the guide wheel is rotated in a direction opposite rotation of the wafer at the point of contact, and wherein the polish pad material contacts an edge portion of the wafer during cleaning thereof, thereby removing contaminants from the edge portion of the wafer, so that edge cleaning is performed in situ in addition to the brush cleaning of the major surface of the wafer, and wherein each drive wheel is supported on a control arm and each control arm also supports one of the guide wheels.
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Accused Products
Abstract
An improvement is disclosed in a brush cleaning apparatus for cleaning a major surface of a wafer and including wafer guide wheels for transporting the wafer. The improvement includes a polish pad material disposed on a circumference of the guide wheels. The polish pad material is a material used in chemical-mechanical polishing of the wafer. The polish pad material contacts an edge portion of the wafer during cleaning thereof, thereby removing contaminants from the edge portion of the wafer, so that edge cleaning is performed in situ in addition to the brush cleaning of the major surface of the wafer.
39 Citations
8 Claims
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1. In a brush cleaning apparatus for cleaning a major surface of a wafer and including wafer drive wheels for rotating the wafer, the improvement comprising:
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wafer guide wheels supported proximate the wafer, with a polish pad material disposed on a circumference of the guide wheels, wherein the guide wheel is rotated in a direction opposite rotation of the wafer at the point of contact, and wherein the polish pad material contacts an edge portion of the wafer during cleaning thereof, thereby removing contaminants from the edge portion of the wafer, so that edge cleaning is performed in situ in addition to the brush cleaning of the major surface of the wafer, and wherein each drive wheel is supported on a control arm and each control arm also supports one of the guide wheels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification