Patent ID: 9134615
Filing Date: 2015-09-15
Classification: G02F,G03F

Abstract:
1. An exposure method for a glass substrate of a liquid crystal display, comprising: providing at least two photo masks, wherein each the photo mask includes an active area and an inactive area, the active area includes an overlap region corresponding to a stitching region of the glass substrate at a side thereof, and a plurality of alignment precision measure and check marks are disposed around the active area; performing exposure with each the photo mask on a separate reference substrate at a corresponding position, performing measurement of the alignment precision measure and check marks formed on the reference substrate, determining whether it is necessary to modify a parameter of the exposure based on the measurement result, and obtaining accurate exposure parameter and position information of each the photo mask; and combining the accurate exposure parameter of each the photo mask, using the combined exposure parameter to perform exposure sequentially with the at least two photo masks on the same substrate at positions corresponding to the position information so as to obtain an exposed pattern, wherein for each the exposure, at least one cover plate is used to shield the alignment precision measure and check marks of the photo mask at the side of the overlap region.