Patent ID: 7582394

Claim:
A photomask for forming a resist pattern, comprising, on a first region in a translucent substrate, three or more first light-shielding portions each in polygonal shape having a property of shielding exposure light and spaced equidistantly, a second light-shielding portion having a property of shielding the exposure light, having stripe shapes each linearly extending from each apex of polygons which comprise the three or more first light-shielding portions being adjacent to each other to a point which is located equidistantly from each of the three or more first light-shielding portions being adjacent to each other, and connecting the three or more first light-shielding portions being adjacent to each other so that each of the stripes contains the point, and first light-transmitting portions each in slit shape having a property of transmitting the exposure light and formed to be surrounded with the first and second light-shielding portions, on a second region in the translucent substrate, a second light-transmitting portion in hole shape for forming a hole-shaped feature, and a third light-shielding portion having a property of shielding the exposure light and surrounding the second light-transmitting portion, wherein, when the exposure light is radiated through the photomask, and the resist film is radiated with the exposure light, resist patterns having three or more polygonal features spaced equidistantly corresponding to the first light-shielding portions and a resist pattern having the hole-shaped feature corresponding to the second light-transmitting portion are formed, and the polygonal features and the small hole-shaped feature correspond to pattern of a semiconductor integrated circuit.