Apparatus and method of fabricating electro luminescence display device
View Patent ↗There is disclosed a fabricating apparatus and method of an electro luminescence display device that is adaptive for preventing organic EL material from flowing over adjacent pixels. A fabricating apparatus of an electro luminescence display device according to an embodiment of the present invention includes a print roller on which an organic material is spread in order to form a light emission layer corresponding to a pixel pattern on a substrate; and a concave-convex pattern attached to the print roller and formed to have a width of about 20˜90% of a pitch of the pixel pattern with a designated gap therebetween.
1. A fabricating apparatus of an electro luminescence display device, comprising:
a print roller on which an organic material is spread in order to form a light emission layer corresponding to a pixel pattern on a substrate; and
a concave-convex pattern attached to the print roller, the concave-convex pattern including protrusions each having a width of about 20˜90% of a pitch of each pixel of the pixel pattern with a designated gap therebetween.
2. The fabricating apparatus according to claim 1 , wherein the width of each protrusion of the concave-convex pattern is about 40˜60% of the pitch of each pixel of the pixel pattern.
3. The fabricating apparatus according to claim 1 , further comprising a plurality of minute grooves on the surface of the concave-convex pattern.
4. The fabricating apparatus according to claim 1 , wherein the print roller includes a supply roller to supply the organic material to the print roller.
5. The fabricating apparatus according to claim 1 , further comprising barrier ribs formed on the substrate to partition off each pixel of the pixel pattern.
6. A method of fabricating an electro luminescence display device, comprising:
adhering a resin plate to a rotating roller, the resin plate having a projected concave-convex pattern wherein each projection of the concave-convex pattern has a width of 20˜90% with respect to a Pitch of a pixel of a pixel pattern which is to be formed on a substrate;
applying an organic material to the resin plate; and
printing the organic material spread from the resin plate onto the substrate by rotating the roller over the substrate.
7. The fabricating method according to claim 6 , wherein the width of each of the projections of concave-convex pattern is about 40˜60% of the pitch of each pixel of the pixel pattern.
8. The fabricating method according to claim 6 , further comprising forming barrier ribs on the substrate to partition off the pixel patterns.
9. The fabricating method according to claim 6 , wherein light emission layers of red, green and blue are formed on the substrate by repeating the adhering step, the applying step and the printing step.