Patent ID: 7723230
Filing Date: 2010-05-25
Classification: G06F

Abstract:
1. A method for manufacturing a semiconductor device comprising: forming a mask layer over a target film; forming a first photoresist film over the mask layer; patterning the first photoresist film using a first photomask; patterning the mask layer using the first photoresist film as a mask; removing the first photoresist film; forming a second photoresist film over the mask layer; patterning the second photoresist film using a second photomask; patterning the mask layer using the second photoresist film as a mask; removing the second photoresist film; and patterning the target film using the mask layer, wherein the first photomask has a binding pattern binding at least two target patterns, which are retained separate from each other with respect to layout data; and the second photomask has a separation pattern overlapping the binding pattern and separating the target patterns formed in one body in the first photomask, wherein an area of the separation pattern is equal to or larger than a predetermined threshold value.