Patent ID: 7057300

Claim:
A mask including a plurality of at least 2×2 arrangement masks, each of said arrangement masks comprising: a support frame; a thin film formed thinner than said support frame and surrounded by said support frame, said thin film having the same shape and size among all of the arrangement masks; a plurality of blocks obtained by dividing said thin film into regions; a group of selected blocks composed of selected blocks selected from said plurality of blocks, said selected blocks being connected to at least two other selected blocks or connected to at least one other selected block and said support frame; holes formed in said thin film of non-selected blocks and passed through by a charged particle beam, in each mark, said holes formed in complementary divided patterns forming different parts of the same pattern; and struts formed on said thin film of said group of selected blocks, said struts connected to the support frame; wherein all of said blocks become non-selected blocks in at least two of said plurality of arrangement masks; and arrangements of said blocks in said 2×2 arrangement masks are different from each other.