Patent ID: 6645780
Filing Date: 2003-11-11
Classification: H01L

Abstract:
A method, comprising:performing a process operation on a first semiconductor wafer within a first lot of semiconductor wafers using a processing tool; acquiring integrated metrology data from said first semiconductor wafer, said integrated metrology data comprising inline metrology data acquired using an integrated metrology tool being integrated within said processing tool; performing a dynamic time process control based upon said integrated metrology data, said dynamic time process control comprising a wafer-to-wafer feedback loop; processing a second semiconductor wafer within said first lot based upon said dynamic time process; acquiring offline metrology data from at least one of said first semiconductor wafer and said second semiconductor wafer from said first lot; and performing a constant time process control based upon said offline metrology data and said integrated metrology data, said constant time process control comprising performing a lot-to-lot feedback process for a second lot of semiconductor wafers.