Method of coating an alignment film and device thereof

A method of coating an alignment film, comprising

• step S10, providing a substrate to-be-coating with the alignment film, and positioning the substrate to-be-coating with the alignment film on an optical bench, wherein the optical bench is configured for up-down rotating with a certain angle around a rotating axis located at a middle part of a main body of the optical bench;
• step S11, using a print wheel mounted with an alignment film printing template and mating with an arranging film wheel, to press against the substrate, receive an alignment liquid from the arranging film wheel and coat the alignment liquid on a to-be-coating region of the substrate along a predetermined coating direction;
• wherein, the print wheel rolls along the predetermined coating direction, the substrate rotates together with the optical bench around the rotating axis and a changing angle between the optical bench and a horizontal surface is formed during a process of coating the alignment liquid on the to-be-coating region of the substrate along the predetermined coating direction;
• step S12, controlling the optical bench and driving the substrate to vibrate back and forth along the predetermined coating direction of the print wheel after coating the alignment liquid on the to-be-coating region and the print wheel leaving the substrate.

. A device of coating an alignment film, comprising

• an optical bench for being positioned a substrate to-be-coating with the alignment film, wherein the optical bench is configured for up-down rotating with a certain angle around a rotating axis located at a middle part of a main body of the optical;
• an arranging film wheel for receiving an alignment liquid;
• a print wheel mounted an alignment film printing template mating with the arranging film wheel for receiving an alignment liquid from the arranging film wheel, and coating the alignment liquid on a to-be-coating region of the substrate along a coating direction;
• a vibration controlling device for controlling vibration of the optical bench after coating the alignment liquid on the to-be-coating region and the print wheel leaving the substrate;
• wherein, the print wheel is configured for continually pressing against the substrate to-be-coating with the alignment film and rolling in the coating direction during coating the alignment liquid on the to-be-coating region, thereby forming a changing angle between the optical bench and a horizontal surface.