Roll-to-roll substrate transfer apparatus, wet etching apparatus comprising the same and apparatus for manufacturing printed circuit board

1. A roll-to-roll substrate transfer apparatus comprising:

a feed roll and a take-up roll between which a substrate is to extend; and

a plurality of parallel drive roller rows to transmit motive power to the substrate for moving the substrate in a linear transferring direction, each drive roller row of the plurality of parallel drive roller rows includes a roller axis arranged in a direction perpendicular to the linear transferring direction of the substrate, and a plurality of spaced-apart drive rollers on the roller axis,

wherein drive rollers of one drive roller row are arranged in spaces between drive rollers of adjacent drive roller rows.

2. The apparatus of claim 1 wherein each drive roller row of the plurality of parallel drive roller rows further comprises a power source for rotating the plurality of spaced-apart drive rollers.

3. The apparatus of claim 1 wherein a first subset of the plurality of parallel drive roller rows is configured to contact a first surface of the substrate, and

wherein a second subset of the plurality of parallel drive roller rows is configured to contact a second surface of the substrate.

4. The apparatus of claim 3 wherein the first subset is configured in at least one group of drive roller rows, and

wherein the second subset is configured in at least one group of drive roller rows.

5. The apparatus of claim 4 further comprising nozzles for spraying an etching solution, the nozzles being configured in spaces between groups of drive roller rows.

6. The apparatus of claim 1 , further comprising a tension-maintaining member to uniformly maintain the tension of the substrate while the substrate is being transferred.

7. The apparatus of claim 1 wherein the drive rollers of the parallel drive roller rows have a same diameter, and a distance between adjacent drive roller rows is less than the diameter.

8. A roll-to-roll substrate transfer apparatus comprising:

a feed roll and a take-up roll for continuous transfer of a substrate using a roll-to-roll method;

a first drive roller row to contact a surface of the substrate for transmitting motive power to the substrate to move the substrate in a linear transferring direction, the first drive roller row including a first roller axis arranged in a direction perpendicular to the transferring direction of the substrate, and a plurality of first drive rollers spaced apart from each other along the first roller axis;

a second drive roller row to contact the surface of the substrate for transmitting motive power to the substrate to move the substrate in the linear transferring direction, the second drive roller row including a second roller axis parallel to and spaced apart from the first roller axis, and a plurality of second drive rollers spaced apart from each other along the second roller axis such that the second drive rollers are arranged in spaces between adjacent first drive rollers; and

a third drive roller row to contact the surface of the substrate for transmitting motive power to the substrate to move the substrate in the linear transferring direction, the third drive roller row including a third roller axis parallel to and spaced apart from the second roller axis, and a plurality of third drive rollers spaced apart from each other along the third roller axis such that the third drive rollers are arranged in spaces between adjacent second drive rollers.

9. The apparatus of claim 8 , wherein the first drive rollers and the third drive rollers are aligned in the linear transferring direction.

10. The apparatus of claim 8 , further comprising fourth, fifth and sixth drive roller rows substantially similar to the first, second and third drive roller rows respectively,

wherein the fourth, fifth and sixth drive roller rows are configured to contact an opposite surface of the substrate.

11. The apparatus of claim 10 , wherein the fourth drive rollers and the sixth drive rollers are aligned in the linear transferring direction.

12. The apparatus of claim 8 , further comprising a tension-maintaining member to uniformly maintain the tension of the substrate while the substrate is being transferred.

13. A wet etching apparatus comprising:

a feed roll and a take-up roll between which a printed circuit board substrate is to extend;

a plurality of parallel drive roller rows to transmit motive power to the substrate for moving the substrate in a linear transferring direction, each drive roller row of the plurality of parallel drive roller rows includes a roller axis arranged in a direction perpendicular to the linear transferring direction of the substrate, and a plurality of spaced-apart drive rollers on the roller axis, and

a nozzle arranged to face the substrate and to spray an etching solution,

wherein drive rollers of one drive roller row are arranged in spaces between drive rollers of adjacent drive roller rows.

14. The apparatus of claim 13 wherein each drive roller row of the plurality of parallel drive roller rows further comprises a power source for rotating the plurality of spaced-apart drive rollers.

15. The apparatus of claim 13 wherein a first subset of the plurality of parallel drive roller rows is configured to contact a first surface of the substrate, and

wherein a second subset of the plurality of drive roller rows is configured to contact a second surface of the substrate.

16. The apparatus of claim 15 wherein the first subset is configured in at least one group of drive roller rows, and

wherein the second subset is configured in at least one group of drive roller rows.

17. The apparatus of claim 16 wherein the nozzle is configured to spray the etching solution in spaces between groups of drive roller rows.

18. The apparatus of claim 13 , further comprising a tension-maintaining member to uniformly maintain the tension of the substrate while the substrate is being transferred.

19. An apparatus for manufacturing a printed circuit board comprising:

a feed roll and a take-up roll between which a printed circuit board substrate is to extend;

a plurality of parallel drive roller rows to transmit motive power to the substrate for moving the substrate in a linear transferring direction, each drive roller row of the plurality of parallel drive roller rows includes a roller axis arranged in a direction perpendicular to the linear transferring direction of the substrate, and a plurality of spaced-apart drive rollers on the roller axis,

a nozzle arranged to face the substrate and to spray an etching solution; and

a laser drilling apparatus and an exposure apparatus disposed in the path of the substrate,

wherein drive rollers of one drive roller row are arranged in spaces between drive rollers of adjacent drive roller rows.

20. An apparatus for manufacturing a printed circuit board comprising:

a feed roll and a take-up roll between which a printed circuit board substrate is to extend;

a plurality of parallel drive roller rows to transmit motive power to the substrate for moving the substrate in a linear transferring direction, each drive roller row of the plurality of parallel drive roller rows includes a roller axis arranged in a direction perpendicular to the linear transferring direction of the substrate, and a plurality of spaced-apart drive rollers on the roller axis; and

a plating apparatus comprising a plurality of contact points through which current is to be applied to the substrate, and disposed in the path of the substrate,

wherein drive rollers of one drive roller row are arranged in spaces between drive rollers of adjacent drive roller rows.

21. The apparatus of claim 20 , wherein the plurality of contact points is to move according to track-laying movement.