System for forming alignment layer of liquid crystal display device and operation method thereof
View Patent ↗A system for forming an alignment layer of a liquid crystal display device includes a rubbing apparatus to perform a rubbing process on the alignment layer on a substrate, a pre-treatment apparatus to thermally treat the substrate, and a light irradiation apparatus to irradiate light onto the substrate. The rubbing apparatus, the pre-treatment apparatus and the light irradiation apparatus are constructed in an in-line type.
1. An operation method of a system for forming an alignment layer of a liquid crystal display device, the operation method comprising:
transferring a substrate on which an alignment layer is placed into a rubbing apparatus;
rubbing the alignment layer on the substrate;
transferring the substrate into a pre-treatment apparatus and thermally treating the substrate;
transferring the substrate into a light irradiation apparatus; and
irradiating light onto the alignment layer on the substrate,
wherein the substrate is heated in the pre-treatment apparatus by at least one heating unit selected from the group consisting of an infrared irradiation apparatus, a coil and a hot pipe,
wherein the rubbing apparatus, the pre-treatment apparatus and the light irradiation apparatus are comprised of an in-line type.
2. The operation method of claim 1 , wherein the alignment layer is surface-treated by gas in the pre-treatment apparatus.
3. The operation method of claim 1 , wherein the alignment layer is aligned by a polarized light irradiated from the light irradiation apparatus.
4. The operation method of claim 1 , wherein the pre-treatment apparatus is provided in a same chamber as the light irradiation apparatus.
5. The operation method of claim 1 , wherein the alignment layer includes at least one alignment material selected from the group consisting of polyamic acid, polyethleneimine, polyvinyl alcohol, polyamide, polyethylene, poly-phenylenephthalamide, polyester, polyurethane, and poly-methylmethacrylate.
6. The operation method of claim 5 , wherein the alignment layer is aligned perpendicularly to a polarization direction.
7. The operation method of claim 1 , wherein the alignment layer includes polystylene.
8. The operation method of claim 7 , wherein the alignment layer is aligned to coincide with a polarization direction.
9. The operation method of claim 1 , wherein the pre-treatment apparatus forms a photo initiator on an entire surface of the alignment layer.