Patent ID: 7633596
Filing Date: 2009-12-15
Classification: G02F

Abstract:
1. A method of manufacturing a cell wall for use in a liquid crystal display device, the method comprising applying a photoresist material to a region of a substantially planar inner surface of a substrate, exposing the applied photoresist material to a suitable light source through a suitably patterned mask, removing soluble photoresist, and hardening the exposed photoresist material to produce an alignment structure on a region of said surface for inducing liquid crystal material in said region to adopt a desired alignment in an azimuthal plane, wherein said alignment structure comprises a two dimensional array of microstructures which are shaped and oriented to produce the desired alignment; each microstructure extending to a distance in the range about 150 nm to about 5 μm normal to said planar inner surface and having no plane of symmetry orthogonal to said azimuthal plane and to said planar inner surface; but not including any method which produces a surface alignment structure comprising a sinusoidal bigrating.