Method for forming printing roll patterns

1. A method for forming a pattern, comprising:

providing a printing roll having convex patterns thereon;

applying an ink onto an etching object layer; and

forming ink patterns on the etching object layer as the printing roll rotates on the ink with the convex patterns in contact with the ink,

wherein the step of providing the printing roll having the convex patterns, comprises:

providing a cylindrical roll having a blanket on its surface;

applying an organic film to a surface of the blanket;

providing a cliché having a plurality of convex patterns;

forming organic patterns on a blanket surface which does not contact with the convex patterns by rotating the roll after contacting the organic film on the blanket surface with the cliché; and

hardening the organic patterns.

2. A method for forming a pattern, comprising:

providing a printing roll having convex patterns thereon;

applying an ink onto an etching object layer; and

forming ink patterns on the etching object layer as the printing roll rotates on the ink with the convex patterns in contact with the ink,

wherein the step of providing the printing roll having the convex patterns, comprises:

providing a cliché having a plurality of grooves;

applying an organic material onto the cliché;

filling the organic material into the grooves and simultaneously, removing the material remaining on the surface of the cliché by moving a doctor blade across the surface of the cliché;

transferring the organic material filled in the grooves onto a surface of a cylindrical roll; and

hardening organic patterns transferred onto the surface of the roll.

3. A method for forming a pattern, comprising:

providing a printing roll having convex patterns thereon;

applying an ink onto an etching object layer; and

forming ink patterns on the etching object layer as the printing roll rotates on the ink with the convex patterns in contact with the ink,

wherein the step of providing the printing roll having the convex patterns, comprises:

applying an organic film onto a resin plate;

forming organic patterns by patterning the organic film;

hardening the organic patterns;

providing a cylindrical roll; and

attaching the resin plate to the surface of the cylindrical roll, exposing the organic patterns.

4. The method of claim 3 , wherein as the printing roll rotates, the ink applied to regions contacting with the projections of the printing roll is removed by being attached to the projections.

5. The method of claim 4 , further comprising:

removing the ink attached to the projections.

6. The method of claim 5 , wherein the ink is removed by acetone or N-Methylpyrrolidone.

7. The method of claim 3 , wherein a surface of each projection of the printing roll is treated with an adhesive force reinforcing agent.

8. The method of claim 7 , wherein the adhesive force reinforcing agent is Hexa Methyl Disilazane (HMDS).

9. The method of claim 3 , wherein the etching object layer includes a metal layer.

10. The method of claim 3 , wherein the etching object layer includes an insulating layer formed of SiOx or SiNx.

11. The method of claim 3 , wherein the etching object layer is a semiconductor layer.

12. The method of claim 3 , further comprising the step of hardening the ink patterns.

13. The method of claim 12 , wherein the hardening the ink patterns comprises:

irradiating heat to the ink patterns.

14. The method of claim 12 , wherein the hardening the ink patterns comprises:

irradiating UV onto the ink patterns.

15. The method of claim 3 , further comprising:

etching the etching object layer by using the ink patterns as a mask.