Patent ID: 8095894
Filing Date: 2012-01-10
Classification: G03F,G06F,Y02P

Abstract:
1. A method for forming an LSI pattern, the LSI pattern including a plurality of circuit patterns, the method comprising steps of: designing the plurality of circuit patterns; making an initial layout for the plurality of circuit patterns in accordance with a design rule; performing optical proximity corrections on at least two of the plurality of circuit patterns that have been initially laid out to be adjacent to or cross each other, thereby forming optical proximity corrected patterns out of the adjacent or crossing circuit patterns; evaluating effectiveness of the optical proximity corrected patterns under predetermined process conditions; based on a result of the evaluating step: changing the design rule; making a re-layout for the initially laid out circuit patterns in accordance with the changed design rule; and forming the circuit patterns on a semiconductor substrate under the predetermined process conditions by using a mask produced using the re-laid out circuit patterns using a computer.