Patent ID: 8847223

Claim:
A method of forming a photosensitive pattern on a substrate, a photosensitive layer being disposed on the substrate, the method comprising: moving at least one of the substrate and a set of micro-mirrors in a first direction, the set of micro-mirrors being disposed above the substrate and being arranged as an array, the array having a first edge extending in a second direction, a plurality of micro-mirrors of the set of micro-mirrors being arranged along the first edge and being aligned with each other in the second direction, the second direction being at an acute angle with respect to the first direction; selectively turning on one or more micro-minors of the set of micro-mirrors according to a position of the set of micro-minors relative to the photosensitive layer, thereby irradiating one or more spot beams on the photosensitive layer; and developing the photosensitive layer exposed by the spot beams to form a photosensitive pattern having an edge portion extending in a third direction crossing the first and second directions, wherein the selectively turning on one or more micro-minors of the set of micro-mirrors comprises: irradiating a first spot beam corresponding to a first micro-minor at a first exposed point on a pattern-formed region in which the photosensitive pattern is formed; and irradiating a second spot beam corresponding to a second micro-minor at a second exposed point on the pattern-formed region disposed in the third direction with respect to the first exposed point, the second micro-mirror being disposed in the second direction with respect to the first micro-mirror.