Patent ID: 7413500
Filing Date: 2008-08-19
Classification: B24B

Abstract:
1. A method for processing microfeature workpieces, comprising: subjecting a first microfeature workpiece to a first process for a first process time, the first process changing a thickness of the first microfeature workpiece at a first rate; subjecting the first microfeature workpiece to a second process, the second process changing the thickness of the first microfeature workpiece at a second rate that differs from the first rate; determining a thickness change of the first microfeature workpiece attributable to both the first process and the second process; calculating an offset thickness change by offsetting the thickness change by a thickness offset associated with the second process; determining a thickness change factor for the first microfeature workpiece as a ratio of the offset thickness change and the first processing time; determining a target thickness change for a second microfeature workpiece by comparing a second pre-processing thickness of the second microfeature workpiece with a target thickness of the second microfeature workpiece; determining a target processing time as a function of the target thickness change and the thickness change factor; subjecting the second microfeature workpiece to the first process for the target processing time; and subjecting the second microfeature workpiece to the second process.