Patent ID: 9081297
Filing Date: 2015-07-14
Classification: G03F

Abstract:
1. A lithography apparatus comprising: a beam separating element configured to divide a light beam from a light source into more than one collimated light beams; at least two reticle edge masking assemblies (REMAs), wherein each REMA is positioned to receive one of the more than one collimated light beams, and each REMA comprises a movable slit for passing the one collimated light beam therethrough, a controller for controlling the speed of the movable slit based on a size of the movable slit, an intensify of the one or more collimated light beams, or a material being patterned; one mask having a single pattern, wherein the mask is configured to receive light from all of the at least two REMAs; a projection lens configured to receive light transmitted by the one mask; and an immersion liquid adjacent to the projection lens.