Apparatus for forming alignment layer and auto-calibration method thereof
View Patent ↗An apparatus for forming alignment layer includes a printing stage for supporting a substrate thereon, at least one inkjet head having at least one spray hole above the printing stage, the spray hole spraying an alignment material onto the substrate, a head support supporting the inkjet head, a pitch measuring unit adjacent to the inkjet head, and a display unit displaying measured results provided by the pitch measuring unit.
1. A method of auto-calibration of an apparatus for forming alignment layer, comprising:
coating an alignment material on a substrate using an inkjet head;
measuring a pitch of the inkjet head using a pitch measuring unit; and
displaying the measured pitch on a pitch display unit,
wherein the alignment material is coated while the pitch measuring unit measures the pitch of the inkjet head.
2. The method according to claim 1 , wherein the measuring includes measuring a size of a spray hole of the inkjet head.
3. The method according to claim 1 , wherein the coating the alignment material includes spraying the alignment material via one or more spray holes of the inkjet head.
4. The method according to claim 3 , wherein the measuring includes measuring a pitch between the one or more spray holes of the inkjet head.
5. The method according to claim 1 , wherein the coating the alignment material includes spraying the alignment material using a second inkjet head.
6. The method according to claim 5 , wherein the measuring includes measuring a pitch between the inkjet heads.
7. The method according to claim 1 , wherein the coating and the measuring are performed substantially simultaneously.
8. The method according to claim 1 , wherein the coating, the measuring and the displaying are performed substantially simultaneously.
9. The method according to claim 1 , wherein the measuring is performed continuously as the alignment material being coated.