Patent ID: 7728256

Claim:
A stage for crystallization comprising: a moving stage that can move in a horizontal direction; a fixing plate provided in the moving stage, the fixing plate configured to fix a substrate; a rotating frame provided in the moving stage, the rotating frame configured to rotate the fixing plate; a plurality of adsorption pins provided in the fixing plate, the adsorption pins capable of being moved up and down, wherein the adsorption pins are capable of adsorbing the substrate; a vacuum groove formed in a surface of the fixing plate, the vacuum groove capable of adsorbing the substrate; an optical device configured to crystallize silicon by irradiating laser beams to the substrate; and a sensing device provided in the optical device, the sensing device facing toward an edge of the substrate to directly sense the edge of the substrate, and configured to control the movement of the moving stage, the fixing plate and the rotating frame to align the substrate.