Patent ID: 9323107
Filing Date: 2016-04-26
CPC Classification: G02B,G02F

Claim Text:
1. An alignment film having multi-dimensional orientations, which is generated by a method comprising: mixing 4-nitrobenzyl bromide with triphenylphosphine at a molar ratio of from 1:0.95 to 1:1, dissolving them in a dry tetrahydrofuran solution, heating and agitating under reflux, to obtain a dry white product A; mixing the resultant white product A with p-nitrobenzaldehyde at a molar ratio of from 0.95:1 to 1:1 in a tetrahydrofuran solution, and agitating under room temperature to obtain a product B; mixing the resultant product B with tin dichloride at a molar ratio of from 1:1 to 1:1.5, then dissolving them in a mixed solution of hydrochloride acid and acetone, agitating under the room temperature and refluxing to obtain a product C; mixing the resultant product C with 9,9′-bianthracyl tetracarboxylic dianhydride in a dry N-methyl-pyrrolidone solution under agitation to obtain a product D; heating the resultant product D to obtain the alignment film; coating the alignment film on a substrate, and predetermining regions corresponding to each orientation among the multi-dimensional orientations of the alignment film; covering the alignment film with an ultraviolet light mask plate having ultraviolet light transmission regions, and covering regions corresponding to each orientation with the ultraviolet light transmission regions of the ultraviolet mask plate in sequence; and illuminating the ultraviolet mask plate with linearly polarized ultraviolet light at a dosage that makes the alignment film orient along the direction perpendicular or parallel to the polarization direction of the linearly polarized ultraviolet light and have the highest homogeneity, such that each orientation along the direction corresponding to the dosage and the polarization direction of the linearly polarized ultraviolet light is generated within the regions corresponding to each orientation.