Alignment film, a method of fabricating the same, and a liquid crystal display using the same

A method of fabricating a structure comprising a liquid crystal medium and an alignment film for use in aligning the liquid crystal medium, comprising steps as follows:

• polymerizing monomers of at least an anhydride, a first diamine having terphenyl and a second diamine not having terphenyl to form a plurality of alignment molecules, wherein the first diamine is selected from one of diamines having terphenyl represented by
• a mass amount of the first diamine is less than a mass amount of the second diamine;
• and the plurality of alignment molecules has formula e as
• wherein the component A and the component B in formula e comprise terphenyl;
• dissolving the plurality of alignment molecules with a solvent to form an alignment molecule solution, wherein a mass ratio of the solvent to the alignment molecule solution is in 80˜99%;
• coating the alignment molecule solution on a substrate;
• and
• prebaking the alignment molecule solution coated on the substrate under a temperature in 100˜200° C. for 20 to 60 minutes, and then baking the alignment molecule solution coated on the substrate under a temperature in 180˜250° C. for 30 to 150 minutes to form the alignment film in the forming of the structure.

A liquid crystal display, comprising:

• two substrates, oppositely arranged and parallel to each other;
• a liquid crystal medium, having a plurality of photo-polymerizable monomers and disposed between the two substrates;
• and
• two alignment films, respectively formed on a surface of each substrate neighboring the liquid crystal medium, wherein each alignment film comprises the plurality of alignment molecules having the formula e
• wherein the component A and the component B in formula e comprise terphenyl, the two alignment films are formed by polymerizing monomers of at least an anhydride, a first diamine having terphenyl and a second diamine not having terphenyl, the first diamine is selected from one of the diamines having terphenyl represented by
• and a mass amount of the first diamine is less than a mass amount of the second diamine.