Patent ID: 7052921
Filing Date: 2006-05-30
Classification: G03F,H01L

Abstract:
1. A method of forming a semiconductor device, the method comprising: (a) forming a process layer above a wafer body; (b) forming a layer of photoresist above the process layer; (c) imaging the layer of photoresist with a patterned mask; (d) exposing the layer of photoresist to leave an impression of the patterned mask on the layer of photoresist; (e) developing the layer of photoresist to form a patterned photoresist mask; (f) determining a thickness of the patterned photoresist mask by performing an in situ scatterometry measurement on at least a portion of the patterned photoresist mask; and (g) if the thickness of the patterned photoresist mask is insufficient, removing the patterned photoresist mask and repeating steps (a)–(g).