Patent ID: 7438626
Filing Date: 2008-10-21
Classification: B24B,Y10S

Abstract:
1. A method of removing material from a microfeature workpiece, comprising: holding the microfeature workpiece in a workpiece holder having an embedded actuator; polishing the workpiece by rubbing the workpiece against a surface of a fixed-abrasive medium having a matrix and abrasive particles attached to the matrix; vibrating an interface between the workpiece and the surface of the fixed-abrasive medium while rubbing the workpiece against the surface, wherein the vibrating procedure comprises generating repetitive relative motion between the workpiece and the fixed-abrasive medium in a direction transverse to the interface between the workpiece and the surface of the fixed-abrasive medium by energizing the actuator in the workpiece holder; and controlling the repetitive relative motion to maintain a friction force between the workpiece and the surface of the fixed-abrasive medium within a desired range.