Patent ID: 8795930

Claim:
A method comprising: providing a mask including: a transparent substrate; a first layer of a polarization material provided on the transparent substrate, the first layer formed to allow only light polarized in a first direction to travel therethrough; and a second layer of a polarization material provided on the first layer, the second layer formed to allow only light polarized in a second direction to travel therethrough, the second direction being at an angle to the first direction, wherein a first region is provided that extends in the first direction and contains the first layer and no second layer, and wherein a second region is provided that extends in the second direction and contains the second layer and no first layer; and exposing a photoresist layer to light through the mask such that light polarized in the first direction passes through the first region to expose a first-directional region of the photoresist layer used, and light polarized in the second direction passes through the second region to expose a second-directional region of the photoresist layer.