Patent ID: 9075323
Filing Date: 2015-07-07
Classification: G03F

Abstract:
1. An exposure apparatus, comprising: a first photo-mask comprising a light blocking layer and transmission parts disposed in the light blocking layer and through which light is transmitted, the transmission parts being arranged in a first direction and separated from each other; and a second photo-mask comprising a light blocking layer and transmission parts disposed in the light blocking layer and through which light is transmitted, the transmission parts being arranged in the first direction and separated from each other, the first photo-mask and the second photo-mask comprising an overlapping region where a plurality of the transmission parts of each of the first photo-mask and the second photo-mask are overlapped with each other, wherein: the overlapped transmission parts comprise semi-transmission sections each comprising a semi-transmission layer; and a ratio of an area occupied by the semi-transmission section in each of the overlapped transmission parts is gradually increased or decreased for different transmission parts along the first direction.