Method of forming alignment layer in LCD
View Patent ↗A method of forming an alignment layer in a liquid crystal display includes depositing an alignment layer material on a substrate; rubbing the alignment layer material to impart an alignment direction onto the alignment layer material; and irradiating a non-polarized ultraviolet light onto the alignment layer material having the alignment direction to form an alignment layer.
1. A method of forming an alignment layer in a liquid crystal display, comprising:
depositing an alignment layer material on a substrate;
rubbing the alignment layer material to impart an alignment direction onto the alignment layer material; and
etching a surface of the alignment layer by irradiating a non-polarized ultraviolet light to remove a defect by the rubbing,
wherein the alignment layer material is etched less than 200 Å in the operation of irradiating the non-polarized light onto the alignment layer material.
2. The method according to claim 1 , wherein an irradiation energy of the non-polarized ultraviolet light is about 0.05-5 J/cm 2 .
3. The method according to claim 1 , wherein the non-polarized ultraviolet light has a wavelength of about 200-400 nm.
4. The method according to claim 1 , wherein the alignment layer material is etched less than 100 Å in the operation of irradiating the non-polarized light onto the alignment layer.
5. The method according to claim 1 , wherein the liquid crystal display is an in-plane switching mode liquid crystal display.
6. A method of forming an alignment layer in a liquid crystal display, comprising:
depositing an alignment layer material on a substrate;
performing a first alignment process to impart an alignment direction onto the alignment layer material; and
performing a second alignment process to etch a surface portion of the alignment layer material having the alignment direction imparted thereon to form the alignment layer,
wherein the alignment layer material is etched less than 200 Å in the second alignment process.
7. The method according to claim 6 , wherein the first alignment process includes a rubbing process.
8. The method according to claim 6 , wherein the second alignment process includes irradiating a non-polarized ultraviolet light onto the alignment layer material.
9. The method according to claim 8 , wherein the irradiation energy of the non-polarized ultraviolet light is about 0.05-5 J/cm 2 .
10. The method according to claim 8 , wherein the non-polarized ultraviolet light has a wavelength of about 200-400 nm.
11. The method according to claim 6 , wherein the alignment layer material is etched less than 100 Å in the second alignment process.
12. The method according to claim 6 , wherein the liquid crystal display is an in-plane switching mode liquid crystal display.