Patent ID: 8922757

Claim:
A photo-alignment apparatus, comprising: an exposure machine, comprising; a light source, irradiating an unpolarized light; a polarization plate, receiving the unpolarized light and converting the unpolarized light to a polarized light; a multilayer splitter, receiving the polarized light and splitting the polarized light into a first light beam and a second light beam, wherein the first light beam and the second light beam have the same polarized state; and two light transport plates, arranged to be tilted to change the traveling directions of the first light beam and the second light beam respectively; at least one mask, comprising at least two transmission portions to allow light to pass therethrough, wherein the first light beam and the second light beam pass through the two transmission portions, respectively, and a photo-alignment area, corresponding to the mask, wherein the first light beam and the second light beam passing through the two transmission portions are projected on the photo-alignment area.