| abstract |
The invention provides a functional material, as well as a preparation method, an alignment material and a liquid crystal display substrate thereof, belongs to the technical field of display and is used for solving the problem that the existing liquid crystal display device is polluted. The functional material comprises inorganic powder with a modified layer, wherein the inorganic powder comprises any one or more of alumina, magnesium oxide, zinc oxide, zirconium oxide, silica, titanium dioxide, boron oxide, ferric oxide, calcium oxide, potassium oxide, sodium oxide and lithium oxide; and the modified layer is prepared by dehydrating and ring-closing a reaction product of bianhydride and diamine. The alignment material comprises the functional material. The liquid crystal display substrate comprises an alignment layer formed by the alignment material. |