Patent ID: 6767690
Filing Date: 2004-07-27
Classification: G03F,Y10S

Abstract:
A method of forming a pattern across an expanse of photoresist, comprising:defining a first region of the expanse, a second region of the expanse, and a third region of the expanse; exposing the first region of the expanse to a first radiation while leaving the third region of the expanse not exposed to the first radiation, the first radiation being comprised by an e-beam or a laser beam; after exposing the first region of the expanse to the first radiation, exposing the second region of the expanse to a second radiation while leaving the third region of the expanse not exposed to the second radiation, the second radiation being different from the first radiation, the second radiation being comprised by an e-beam or a laser beam; wherein the exposure of the first and second regions of the expanse to the first and second radiations alters the solubility of the first and second regions in a solvent relative to the solubility of the third region of the expanse; after exposing the first and second regions of the expanse to the first and second radiations, exposing the expanse to the solvent to pattern the expanse; wherein the first region includes a first feature formed in the patterned expanse of photoresist to a first width; wherein the second region includes a second feature formed in the patterned expanse of photoresist to a second width; and wherein the difference between the first and second radiation causes exposures compensates for the time difference between the two exposures and thereby allows the second width to be formed more similar to the first width than it would be if the first and second radiations were not different from one another.