Patent ID: 6753116
Filing Date: 2004-06-22
Classification: G03F

Abstract:
A method for processing a layer of material sensitive to radiation, the layer being formed on a substrate, the method comprising:irradiating the material with said radiation; and developing the material to remove a portion of the material and expose a portion of the substrate, creating a pattern defined by the exposed portion of the substrate; wherein the irradiating operation comprises: (a) irradiating said material through a first mask which has a clear region and a non-clear region; and (b) irradiating said material through a second mask which has a clear region and a non-clear region; wherein the non-clear region of the first mask covers a position of the non-clear region of the second mask, and the non-clear region of the first mask extends beyond a boundary of the position of the non-clear region of the second mask.