Patent ID: 6841315
Filing Date: 2005-01-11
Classification: G03F

Abstract:
1. A graytone mask having an opaque part; a transmission part; and a graytone part which is an area wherein there is formed an opaque pattern of not exceeding the resolution limit of an exposure apparatus using the mask and which reduces the amount of exposing radiation transmitted through the area, wherein the graytone mask has a boundary portion—which the graytone part is adjacent to at least one of the opaque part and the transmission part; a counter shape of at least one of the opaque part and the transmission part include a bend portion; and a contour pattern is formed in the form of a line along a contour geometry of at least one of the opaque part and the transmission part, in the vicinity of the boundary portion of the graytone part side at the boundary of the opaque part of which borders are on the graytone part, or an area including the boundary portion or in the vicinity of the boundary portion at the boundary of the transmission part of which borders are on the graytone part.