Patent ID: 8304173

Claim:
A method of forming a pattern, comprising: sequentially forming an object layer and a first photosensitive layer on a substrate including a plurality of first regions and a plurality of second regions alternately arranged therein; forming a first photosensitive layer pattern including a first pattern in one of the plurality of first regions and a second pattern in an adjacent one of the plurality of second regions by performing a first photolithography process using a photomask having a first mask region and a second mask region, the first pattern being transferred from the first mask region, and the second pattern being transferred from the second mask region; shifting the substrate or the photomask by a single shot width after forming the first photosensitive layer pattern, and transferring the first pattern to another one of the plurality of first regions and transferring the second pattern to another adjacent one of the plurality of second regions, the first pattern being transferred to each of the plurality of first regions and the second pattern being transferred in each of the plurality of second regions; performing a first etching process on the object layer using the first photosensitive layer pattern as an etching mask to form a first object layer pattern; forming a second photosensitive layer on the substrate to cover the first object layer pattern; forming a second photosensitive layer pattern including a third pattern in the adjacent one of the plurality of the second regions and a fourth pattern in the other one of the plurality of the first regions by performing a second photolithography process using the photomask, the third pattern being transferred from the first mask region, and the fourth pattern being transferred from the second mask region; before performing the second photolithography process, shifting the substrate or the photomask by half of the single shot width; and performing a second etching process on the first object layer pattern using the second photosensitive layer pattern as an etching mask to form a second object layer pattern.