Patent ID: 8085373

Claim:
A method of treating an alignment layer, on which a plurality of pixel regions are defined, for conducting an alignment treatment of said alignment layer by irradiating ultraviolet light onto said alignment layer, said method comprising the steps of: disposing a photomask above said alignment layer; positioning said photomask so that a center portion of a first opening of said photomask is aligned with a center portion of a first pixel region of said alignment layer; disposing an ultraviolet light source obliquely above said photomask at a first position; conducting a first exposure by irradiating ultraviolet light from said ultraviolet light source at said first position; disposing, at a second position, said ultraviolet light source obliquely and symmetrically to said ultraviolet light source at said first position above said photomask; and conducting a second exposure subsequently to said first exposure by irradiating ultraviolet light from said ultraviolet light source at said second position; wherein a width of a non-exposed region on said alignment layer between two regions exposed by said first exposure and said second exposure is not greater than 20 μm or a width of an overlapping exposed region on said alignment layer of two regions exposed by said first exposure and said second exposure is not greater than 20 μm.