Patent ID: 6861094

Claim:
A method of forming a layer on a micro-device workpiece having a center region and at least a first outer region radially outward from the center region, the method comprising: dispensing a first pulse of a first precursor over the center region of the workpiece; dispensing a first pulse of a purge gas over the center region of the workpiece after terminating the first pulse of the first precursor, and dispensing a second pulse of the first precursor over the first outer region of the workpiece concurrently while dispensing the first pulse of the purge gas; dispensing a first pulse of a second precursor over the center region of the workpiece after terminating the first pulse of the purge gas, and dispensing a second pulse of the purge gas over the first outer region of the workpiece while concurrently dispensing the first pulse of the second precursor; and dispensing a third pulse of the purge gas over the center region of the workpiece after terminating the first pulse of the second precursor, and dispensing a second pulse of the second precursor over the, first outer region of the workpiece while concurrently dispensing the third pulse of the purge gas.