Exposure apparatus includes photomasks on which a mask pattern having the same shape as that of an exposure pattern exposed onto a surface of a TFT substrate held on a stage is formed, lens assemblies in which unit lens groups in each of which a plurality of convex lenses are arranged in a normal direction to the photomasks so that same-size erect images of mask patterns formed on the photomasks can be formed on the surface of the TFT substrate are arranged in a plane parallel with the photomasks and the surface of the TFT substrate held on the stage, and moving device that moves the lens assemblies in a plane parallel with the masks and the surface of TFT substrate held on the stage.