Patent ID: 6703168
Filing Date: 2004-03-09
Classification: G03F

Abstract:
A photomask including an isolated light-shield pattern formed on a transparent substrate that is transparent to an exposure light, characterized in thatthe light-shielding pattern is formed from a light-shielding film region formed from a light-shielding film, and a phase shift region having an opposite phase with respect to a light-transmitting region of the transparent substrate which has no light-shielding pattern, the light-shielding pattern includes at least a first light-shielding pattern having a first width and a second light-shielding pattern having a second width larger than the first width, a first phase region, which is part of the phase shift region and is surrounded by the light-shielding film region, is provided in a portion of the first light-shielding pattern, and only the light-shielding film region is provided in the second light-shielding pattern.