Apparatus, mask, and method for printing alignment layer
View Patent ↗An apparatus for printing an alignment layer of a liquid crystal display device includes a dispenser dropping an alignment material, an anilox roll receiving the dropped alignment material, a doctor roll evenly spreading the dropped alignment material coated onto the anilox roll, and a printing roll receiving the alignment material from the anilox roll, and transferring the alignment material onto a substrate, wherein the printing roll has a plurality of masks each having a numerical aperture of about 5% to 25%.
1. An apparatus for printing an alignment layer of a liquid crystal display device, comprising:
a dispenser dropping an alignment material;
an anilox roll receiving the dropped alignment material;
a doctor roll evenly spreading the dropped alignment material coated onto the anilox roll; and
a printing roll receiving the alignment material from the anilox roll, and transferring the alignment material onto a substrate,
wherein the printing roll has a plurality of masks each having a numerical aperture of about 5% to 25%.
2. The apparatus according to claim 1 , wherein the masks include a plurality of projections.
3. The apparatus according to claim 2 , wherein the projections project about 0.75 mm from a surface of the mask.
4. The apparatus according to claim 1 , wherein the alignment material includes a polyimide material.
5. The apparatus according to claim 1 , wherein the mask has a total thickness of about 2.09 mm.
6. The apparatus according to claim 1 , wherein the mask is one of a printing rubber plate and a APR rubber plate.