Patent ID: 9697989
Date: 2017-07-04
CPC Classifications: H01J

Claim:
1. A method for generating a parameter pattern, comprising: performing N*X measurements upon N*X regions in a first size on a surface of a workpiece to obtain N*X measured results; and deriving a parameter pattern corresponding to X regions in a second size on the surface of the workpiece according to the N*X measured results by a computer, wherein the second size is greater than the first size, and each of the X regions in the second size includes N of the N*X regions in the first size; wherein the parameter pattern comprises X regional parameter values; wherein the surface of the workpiece includes a layer with a desired pattern, and the N*X measurements are performed upon the pattern in each of the N*X regions in the first size; and the measurements relate to measuring a spatial dimension of the layer; and wherein each of the X regional parameter values corresponds to a mean value of N of the N*X measured results performed upon N regions in the first size adjacent to each other on the surface of the workpiece, N and X being integers greater than 1.