Patent ID: 7588869

Claim:
A divided exposure method for a liquid crystal display using a mask having a non-overlapping part and left and right overlapping parts, wherein patterns at the left and right overlapping parts are different from a pattern of the non-overlapping part, the method comprising: providing a substrate having a thin film; forming a photoresist layer on the thin film; providing the mask over a first shot area of the photoresist layer; irradiating light onto the first shot area through the mask by an exposer; positioning the mask to a second shot area of the photoresist layer, wherein the second shot area partially overlaps the first shot area such that the left and the right overlapping parts of the mask correspond to a portion of the first shot area; and irradiating light onto the second shot area through the mask by the exposer, and wherein the patterns at the left and right overlapping parts of the mask are different from each other in order to compensate for left and right exposure light intensity deviation of the exposer, and wherein the mask is formed to have a critical dimension deviation opposite a light intensity difference of the exposer such that the patterns formed at the left and right overlapping parts of the mask compensate for the difference in light intensity of the left and right sides of the exposer.