Patent ID: 6358851
Filing Date: 2002-03-19
Classification: B24B,C23C

Abstract:
A method for removing nodules from a semiconductor surface, comprising:providing a semiconductor surface; providing a circular polishing bit having a center said polishing bit being mounted on a cylindrical polishing bit support platform having a central axis whereby said cylindrical support platform has further been provided with a shaft having a central axis whereby said polishing bit and said shaft of said polishing bit support platform are positioned at opposing ends of said cylinder of said polishing bit support platform whereby furthermore said center of said polishing bit is on a line that coincides with said axis of said cylindrical support platform which further coincides with said axis of said shaft of said cylindrical support platform; providing a polishing bit mounting apparatus having a central axis whereby said polishing bit mounting apparatus can contain said polishing bit in a fixed position such that said central axis of said polishing bit support platform coincides with said central axis of said polishing bit mounting apparatus; providing a rotary motor said motor having been provided with a shaft having a central axis whereby said shaft can be rotated when stimulated by said rotary motor; positioning and mounting said polishing bit in a fixed position within said polishing bit mounting apparatus by mounting said polishing bit supporting platform in said polishing bit mounting apparatus whereby said central axis of said polishing supporting platform coincides with said central axis of said polishing bit mounting apparatus; positioning and mounting said polishing bit mounting apparatus in a fixed position with respect to said rotary motor whereby said central axis of said polishing bit mounting apparatus coincides with said central axis of said shaft of said rotary motor thereby coinciding said central axis of said polishing bit with said central axis of said shaft of said rotary motor thereby coupling said polishing bit with said shaft of said rotary motor such that any rotary motion of said shaft of said rotary motor is transferred as a rotary motion to said polishing bit; rotating said shaft of said rotary motor thereby providing a rotating motion to said polishing bit thereby enabling said polishing bit to exert an abrasive action; and transferring said abrasive action of said polishing bit to said semiconductor surface thereby removing said nodules from said surface.