Patent ID: 7977033
Filing Date: 2011-07-12
Classification: G03F,H01L

Abstract:
1. A method of forming a pattern of a semiconductor device method, the method comprising: forming a photoresist film over a semiconductor substrate; performing an exposure process on the photoresist film using a photomask having a plurality of light transparent patterns arranged in a line, thereby forming exposure portions in the photoresist film corresponding to the light transparent patterns of the photomask, wherein each of the exposure portions has a radius X and the exposure portions overlap each other due to an interference and diffraction phenomenon of light; performing a development process so that an opening pattern of a continuous line is formed on the photoresist film; and performing a resist flow process to shrink a size of the opening pattern, wherein each of the exposure portions overlaps the adjacent exposure portion by (⅓)X to (⅔)X.