Patent ID: 8564793
Filing Date: 2013-10-22
Classification: G01B,H01L

Abstract:
1. A method for use in control of a process of material deposition or removal during the manufacture of a multilayer structure, the method comprising: (a) providing first data indicative of at least one of a thickness or a profile of at least a top layer of the structure in at least one selected site of the structure prior to applying said process to the top layer of the structure; (b) applying optical measurement to said at least one selected site of the structure after said process has been applied to the structure; (c) generating second measured data indicative of a light response of said at least one selected site of the structure that has undergone said process; (d) analyzing the second measured data using the first data, and generating output data comprising at least one of a thickness and a surface profile of a top layer of the structure after said process has been applied to the structure, said output data being indicative of quality of said process; (e) repeating steps (b) through (d) for each subsequent step of said process of the structure until the process is complete, where the output data of step (d) is used for the process control of the subsequent steps.