Patent ID: 7914953

Claim:
A photomask comprising: a mask pattern formed on a transparent substrate; and a light-transmitting portion where the mask pattern is not formed on the transparent substrate, wherein the mask pattern includes a first light-shielding pattern having a first dimension, and a second light-shielding pattern having a second dimension larger than the first dimension, the first light-shielding pattern includes a first semi-light-shielding portion which allows the exposing light to partially pass through and an auxiliary pattern which is arranged within the first semi-light-shielding portion and allows the exposing light to pass through in an opposite phase with respect to the first semi-light-shielding portion, the second light-shielding pattern includes a second semi-light-shielding portion which allows the exposing light to partially pass through and a light-shielding portion which does not substantially allow the exposing light to pass through, and the first semi-light-shielding portion and the second semi-light-shielding portion allow the exposing light to pass through in an identical phase with respect to the light-transmitting portion.