Roll printing device, rolling printing method and method for manufacturing liquid crystal display device using the same

Abstract

A roll printing device, a roll printing method, and a method for manufacturing a liquid crystal display device using the same.. The roll printing device includes a dispenser; an anilox roll to receive a designated material dispensed by the dispenser; a printing roll engaged with the anilox roll to rotate with the printing roll to receive the designated material supplied from the anilox roll; and a substrate stage fixed below the printing roll for mounting a substrate. The printing roll is movable on the substrate stage to deposit the designated material on the substrate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic sectional view illustrating a method for depositing an orientation film using a roll printing device of the related art;

FIG. 2 is a schematic perspective view of a roll printing device in accordance with a first embodiment of the present invention;

FIG. 3 is a schematic perspective view of a roll printing device in accordance with a second embodiment of the present invention;

FIG. 4A is a schematic sectional view illustrating the roll printing device in accordance with the second embodiment, with vibration dampeners disconnected from the roll printing device; and

FIG. 4B is a schematic sectional view of the roll printing device in accordance with the second embodiment, showing the vibration dampeners connected to the roll printing device.

Claims

1. A method for manufacturing a liquid crystal display device comprising: preparing a lower substrate and an upper substrate;forming an orientation film on at least one of the lower and upper substrates; andforming a liquid crystal layer between the two substrates,wherein the forming of the orientation film comprises:dispensing a designated material on a rotating anilox roll using a dispenser;supplying the designated material from the anilox roll to a printing roll engaged with the anilox roll and rotated therewith; andmoving the printing roll to deposit the designated material on the substrate mounted on a substrate stage.

2. The method as set forth in claim 1, wherein forming of the liquid crystal layer between the two substrates comprises: forming a sealant on one of the two substrates so that a sealant layer without an injection port is formed on the substrate;dispensing liquid crystal on one of the two substrates; andbonding the two substrates to each other.

3. The method as set forth in claim 1, wherein forming of the liquid crystal layer between the two substrates comprises: forming a sealant on one of the two substrates so that a sealant layer having an injection port is formed on the substrate;bonding the two substrates to each other; andinjecting liquid crystal into a space between the two substrates through the injection port.

4. The method as set forth in claim 1, further comprising substantially fixing the printing roll in order to prevent the vibration of the printing roll, before the dispensing of the designated material.

5. The method as set forth in claim 4, wherein substantially fixing of the printing roll includes engaging a first structure formed on a printing roll frame supporting the printing roll and having a curved surface with a second structure formed on a substrate stage frame supporting the substrate stage and having an inclined surface.

6. The method as set forth in claim 5, wherein the first structure is a spherical bearing.

7. The method as set forth in claim 5, wherein the second structure has a triangular shape.

8. The method as set forth in claim 4, wherein substantially fixing of the printing roll includes contacting a third structure formed on a printing roll frame supporting the printing roll and having one of a projection shape and a recess shape, with a fourth structure formed on a substrate stage frame supporting the substrate stage and having one of a recess shape and a projection shape.

9. The method as set forth in claim 8, wherein the third and fourth structures have complementary shapes.

10. The method as set forth in claim 4, further comprising releasing the fixation of the printing roll before the moving of the printing roll.

11. The method as set forth in claim 10, wherein the releasing of the fixation of the printing roll is performed by separating a first structure formed on a printing roll frame supporting the printing roll and having a curved surface from a second structure formed on a substrate stage frame supporting the substrate stage and having an inclined surface.

12. The method as set forth in claim 10, wherein the releasing of the fixation of the printing roll is performed by separating a third structure formed on a printing roll frame supporting the printing roll and having one of a projection shape and a recess shape formed on a fourth structure formed on a substrate stage frame supporting the substrate stage and having one of a recess shape and a projection shape.

13. The method as set forth in claim 12, wherein the third and fourth structures have complementary shapes.

14. The method as set forth in claim 1, wherein during the supply of the designated material from the anilox roll to the printing roll, the designated material supplied from the anilox roll to the printing roll is made substantially uniform using a doctor roll engaged with the anilox roll and rotated therewith.

15. The method as set forth in claim 1, wherein during the supply of the designated material from the anilox roll to the printing roll, the designated material supplied from the anilox roll to the printing roll is made substantially uniform using a doctor blade contacting the anilox roll.

16. A roll printing device comprising: a dispenser;an anilox roll to receive a designated material dispensed by the dispenser;a printing roll rotatable with the anilox roll to receive the designated material supplied from the anilox roll; anda substrate stage fixed below the printing roll to mount a substrate thereon,wherein the printing roll is movable on the substrate stage to deposit the designated material on the substrate.

17. The roll printing device as set forth in claim 16, further comprising a vibration dampener to reduce the vibration of the printing roll generated when the printing roll is rotated with the anilox roll.

18. The roll printing device as set forth in claim 17, further comprising a printing roll frame supporting the printing roll, and wherein the vibration dampener includes a horizontal vibration dampener having a first structure formed on a printing roll frame supporting the printing roll and having a curved surface, and a second structure formed on a substrate stage frame supporting the substrate stage and having an inclined surface.

19. The roll printing device as set forth in claim 18, wherein the first structure is a spherical bearing.

20. The roll printing device as set forth in claim 18, wherein the second structure has a triangular shape.

21. The roll printing device as set forth in claim 18, wherein the second structure is movable vertically to engage the inclined surface thereof to the curved surface of the first structure and to separate the inclined surface thereof from the curved surface of the first structure.

22. The roll printing device as set forth in claim 18, wherein the first structure is on the inner surface of the printing roll frame, and the second structure is on the inner surface of the substrate stage frame.

23. The roll printing device as set forth in claim 18, wherein the first structure is on the outer surface of the printing roll frame, and the second structure is on the outer surface of the substrate stage frame.

24. The roll printing device as set forth in claim 17, further comprising a printing roll frame supporting the printing roll and wherein the vibration dampener includes a vertical vibration dampener having a third structure formed on a printing roll frame supporting the printing roll and having one of a projection shape and a recess shape, and a fourth structure formed on a substrate stage frame supporting the substrate stage and having one of a recess shape and a projection shape.

25. The roll printing device as set forth in claim 24, wherein the third and fourth structures have complementary shapes.

26. The roll printing device as set forth in claim 24, wherein the fourth structure is rotatable vertically to contact the third structure and to separate from the third structure.

27. The roll printing device as set forth in claim 24, wherein the third structure is formed on the inner surface of the printing roll frame, and the fourth structure is formed on the inner surface of the substrate stage frame.

28. The roll printing device as set forth in claim 24, wherein the third structure is formed on the outer surface of the printing roll frame, and the fourth structure is formed on the outer surface of the substrate stage frame.

29. The roll printing device as set forth in claim 16, further comprising a doctor roll engaged with the anilox roll and rotated therewith to substantially uniformly supply the designated material from the anilox roll to the printing roll.

30. The roll printing device as set forth in claim 16, further comprising a doctor blade contacting the anilox roll to substantially uniformly supply the designated material from the anilox roll to the printing roll.

31. A roll printing method comprising: dispensing a designated material on a rotating anilox roll using a dispenser;supplying the designated material from the anilox roll to a printing roll engaged with the anilox roll and rotated therewith; andmoving the printing roll to deposit the designated material on a substrate mounted on a substrate stage.

32. The roll printing method as set forth in claim 31, wherein the substrate stage is fixed.

33. The roll printing method as set forth in claim 31, further comprising substantially fixing the printing roll before dispensing of the designated material.

34. The roll printing method as set forth in claim 33, wherein substantially fixing of the printing roll includes engaging a first structure formed on a printing roll frame supporting the printing roll and having a curved surface with a second structure formed on a substrate stage frame supporting the substrate stage and having an inclined surface.

35. The roll printing method as set forth in claim 34, wherein the first structure is a spherical bearing.

36. The roll printing method as set forth in claim 34, wherein the second structure has a triangular shape.

37. The roll printing method as set forth in claim 33, wherein substantially fixing the printing roll includes contacting a third structure formed on a printing roll frame supporting the printing roll and having one of a projection shape and a recess shape with a fourth structure formed on a substrate stage frame supporting the substrate stage and having one of a recess shape and a projection shape.

38. The roll printing method as set forth in claim 37, wherein the third and fourth structures have complementary shapes.

39. The roll printing method as set forth in claim 33, further comprising releasing the fixation of the printing roll before moving the printing roll.

40. The roll printing method as set forth in claim 39, wherein releasing of the fixation of the printing roll includes separating a first structure formed on a printing roll frame supporting the printing roll and having a curved surface from a second structure formed on a substrate stage frame supporting the substrate stage and having an inclined surface.

41. The roll printing method as set forth in claim 39, wherein releasing of the fixation of the printing roll includes separating a third structure formed on a printing roll frame supporting the printing roll and having one of a projection shape and a recess shape from a fourth structure formed on a substrate stage frame supporting the substrate stage and having one of a recess shape and a projection shape.

42. The roll printing method as set forth in claim 41, wherein the third and fourth structures have complementary shapes.

43. The roll printing method as set forth in claim 31, wherein during the supply of the designated material from the anilox roll to the printing roll, the designated material supplied from the anilox roll to the printing roll is made substantially uniform using a doctor roll engaged with the anilox roll and rotated therewith.

44. The roll printing method as set forth in claim 31, wherein during the supply of the designated material from the anilox roll to the printing roll, the designated material supplied from the anilox roll to the printing roll made substantially uniform using a doctor blade contacting the anilox roll.