Apparatus for fabricating liquid crystal display panels
A method for forming an alignment layer for a liquid crystal display includes preparing a substrate, applying an alignment material for initial alignment of a liquid crystal, and applying a field flux (e.g., an electric or magnetic field) to the alignment material to determine the alignment direction of the alignment material. Further disclosed is an apparatus for forming an alignment layer for a liquid crystal display. The apparatus comprises a substrate stage on which a substrate is mounted, and an electric or magnetic field generator installed at the periphery of the substrate stage. According to the method and the apparatus, since the alignment direction of an alignment material is determined by using an electric or magnetic field, no physical contact with a substrate is required and thus the problem of light leakage caused by rubbing alignment is solved.
1. An apparatus for forming an alignment layer for a liquid crystal display, comprising:
a substrate stage on which a substrate, which an alignment material is formed on, is securely mounted; and
an electric field generator at the periphery of the substrate stage and including an anode and a cathode opposite to the anode through the substrate stage, wherein the anode and the cathode come into contact with both sides of the substrate, and
wherein an electric field is applied in the same direction as the alignment direction of the alignment material.
2. The apparatus according to claim 1 , further comprising an alignment layer applicator before the electric field generator.
3. The apparatus according to claim 2 , wherein the substrate stage is movable so as to consecutively move the substrate to the alignment layer applicator and the electric field generator.
4. The apparatus according to claim 1 , wherein the electric field generator is rotatable so that the direction of the electric field applied is properly varied depending on the alignment direction of the alignment material.
5. The apparatus according to claim 1 , wherein the substrate is rotatable so that the direction of the electric field applied is properly varied depending on the alignment direction of the alignment material.
6. The apparatus according to claim 1 , wherein the alignment material is formed of a polymeric material selected from the group consisting of polyimide, polyamic acid, polyvinylcinnamate, polyazobenzene, polyethyleneimine, polyvinyl alcohol, polyamide, polyethylene, polystyrene, polyphenylenephthalamide, polyester, polyurethane, and polymethyl methacrylate.