Off-line tool for breaking in multiple pad conditioning disks used in a chemical mechanical polishing system
View Patent ↗An off-line tool for breaking in pad conditioning disks used in a chemical mechanical polishing (CMP) system. The off-line tool comprises a platen having a first surface for holding a polishing pad and a motor for rotating the polishing pad. The motor is coupled to the platen via a first drive shaft. The off-line tool further comprises a mechanical drive assembly for holding a second drive shaft in a position proximate the first surface of the platen and a first break-in head removably attached to the second drive shaft. The first break-in head receives a first pad conditioning disk and the second drive shaft moves the first break-in head toward the platen, thereby pressing the first pad conditioning disk against the polishing pad on the platen.
1. An off-line tool for breaking in pad conditioning disks used in a chemical mechanical polishing (CMP) system, said off-line tool comprising:
a platen having a first surface for mounting a polishing pad thereon;
a motor for rotating said polishing pad, wherein said motor is coupled to said platen via a first drive shaft associated with a mechanical drive assembly;
said mechanical drive assembly capable of holding a second drive shaft in a position proximate said first surface of said platen; and
a first break-in head capable of being removably attached to said second drive shaft, wherein said first break-in head is adapted to receive a first pad conditioning disk, and wherein said second drive shaft is operable to move said first break-in head toward said platen, thereby pressing said first pad conditioning disk against said polishing pad mounted on said first surface of said platen.
2. The off-line tool as set forth in claim 1 wherein said mechanical drive assembly is capable of holding a third drive shaft in a position proximate said first surface of said platen.
3. The off-line tool as set forth in claim 2 further comprising a second break-in head capable of being removably attached to said third drive shaft, wherein said second break-in head is adapted to receive a second pad conditioning disk, and wherein said third drive shaft is operable to move said second break-in head toward said platen, thereby pressing said second pad conditioning disk against said polishing pad.
4. The off-line tool as set forth in claim 3 wherein said mechanical drive assembly is capable of rotating said second and third drive shafts.
5. The off-line tool as set forth in claim 4 wherein said first break-in head is adapted to receive a first plurality of pad conditioning disks.
6. The off-line tool as set forth in claim 4 wherein said second break-in head is adapted to receive a second plurality of pad conditioning disks.
7. The off-line tool as set forth in claim 4 wherein said mechanical drive assembly couples said first drive shaft to said second and third drive shafts such that rotation of said first drive shaft causes rotation of said second and third drive shafts.
8. The off-line tool as set forth in claim 7 wherein said first break-in head comprises a first drive mechanism capable of rotating said first pad conditioning disk.
9. The off-line tool as set forth in claim 8 wherein said first drive mechanism is coupled to said second drive shaft and rotates said first pad conditioning disk by translating a rotating motion of said second drive shaft into a rotating motion of said first pad conditioning disk.
10. The off-line tool as set forth in claim 9 wherein said first drive mechanism comprises a first gear assembly coupled to said second drive shaft and to a first spindle connected to said first pad conditioning disk.
11. The off-line tool as set forth in claim 10 wherein said second break-in head comprises a second drive mechanism capable of rotating said second pad conditioning disk.
12. The off-line tool as set forth in claim 11 wherein said second drive mechanism is coupled to said third drive shaft and rotates said second pad conditioning disk by translating a rotating motion of said third drive shaft into a rotating motion of said second pad conditioning disk.
13. The off-line tool as set forth in claim 12 wherein said second drive mechanism comprises a second gear assembly coupled to said third drive shaft and to a second spindle connected to said second pad conditioning disk.
14. The off-line tool as set forth in claim 4 wherein said first break-in head is adapted to receive a first plurality of pad conditioning disks and to press said first plurality of pad conditioning disks against said polishing pad.
15. The off-line tool as set forth in claim 14 wherein said first break-in head comprises a first drive mechanism capable of rotating said first plurality of pad conditioning disks.
16. The off-line tool as set forth in claim 15 wherein said first drive mechanism is coupled to said second drive shaft and rotates said first plurality of pad conditioning disks by translating a rotating motion of said second drive shaft into rotating motions of said first plurality of pad conditioning disks.
17. The off-line tool as set forth in claim 16 wherein said first drive mechanism comprises a first gear assembly coupled to said first drive shaft and to each of a first plurality of spindles connected to said first plurality of pad conditioning disks.
18. The off-line tool as set forth in claim 17 wherein said second break-in head is adapted to receive a second plurality of pad conditioning disks and to press said second plurality of pad conditioning disks against said polishing pad.
19. The off-line tool as set forth in claim 18 wherein said second break-in head comprises a second drive mechanism capable of rotating said second plurality of pad conditioning disks.
20. The off-line tool as set forth in claim 19 wherein said second drive mechanism is coupled to said third drive shaft and rotates said second plurality of pad conditioning disks by translating a rotating motion of said third drive shaft into rotating motions of said second plurality of pad conditioning disks.
21. The off-line tool as set forth in claim 20 wherein said second drive mechanism comprises a second gear assembly coupled to said second drive shaft and to each of a second plurality of spindles connected to said second plurality of pad conditioning disks.
22. A method of breaking in a pad conditioning disk for a chemical mechanical polishing (CMP) system using an off-line tool comprising: i) a platen having a first surface for mounting a polishing pad thereon; ii) a motor for rotating the polishing pad, wherein the motor is coupled to the platen via a first drive shaft associated with a mechanical drive assembly; and iii) said mechanical drive assembly capable of holding a second drive shaft in a position proximate the first surface of the platen, the method comprising the steps of:
removably attaching a break-in head to the second drive shaft;
mounting the pad conditioning disk on the break-in head;
moving the second drive shaft such that the break-in head is moved toward the platen, thereby pressing the pad conditioning disk against the polishing pad mounted on the first surface of the platen.
23. A pad conditioning disk broken in by the method as set forth in claim 22 .