Patent ID: 6713883
Filing Date: 2004-03-30
Classification: H01L,Y10S

Abstract:
A mask set for compensating a misalignment between patterns, comprising:a first mask consisting of a first mask substrate on which a main pattern and a plurality of sub-patterns are formed, wherein said sub-patterns are formed at a side of said main pattern and formed at a predetermined distance from said main pattern, and said sub-patterns and said main pattern are made of light-shielding materials; a second mask consisting of a second mask substrate on which a plurality of hole patterns are formed, wherein said hole patterns correspond to spaces between said main pattern and said sub-patterns of said first mask, respectively, when said first and second masks overlap each other, said hole patterns are made of transparent materials, some hole patterns of said hole patterns are formed at positions consecutively shifted toward said main pattern by a certain distance on the basis of a central hole pattern, and other hole patterns of said hole patterns are formed at positions consecutively shifted toward said sub-patterns by a certain distance on the basis of said central hole pattern; a third mask consisting of a third mask substrate on which a plurality of bar patterns are formed, wherein said bar patterns correspond to said hole patterns of said second mask, respectively when said second and third masks overlap each other, and said bar patterns are made of light-shielding materials.