Patent ID: 6577365
Filing Date: 2003-06-10
Classification: G02F

Abstract:
A method for forming an alignment surface for use in a liquid crystal display cell comprising the steps of:providing a particle beam source having a plurality of particle beam lets emanating from a grid surface; providing an alignment layer having a surface; and exposing said surface to said plurality of particle beamlets to create an alignment surface, wherein the step of exposing comprises the initial steps of: estimating a current density of said plurality of particle beamlets at said grid surface; using said estimated current density to estimate a beam divergence angle for each of said plurality of particle beamlets; calculating a dominant beam incident angle for said plurality of particle beamlets; and determining an operation parameter of said particle beam source from said estimated beam divergence angle and said dominant beam incident angle, to achieve a twist angle that is less than a predetermined maximum twist angle.