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Application of semiconductor IC fabrication techniques to the manufacturing of a conditioning head for pad conditioning during chemical-mechanical polish
 
   
Document Number
US Patent 5755979
Issued Date
May 26, 1998
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Abstract
A pad conditioning method and apparatus for chemical-mechanical polishing. A polishing pad (114) is attached to a platen (112) and used to polish a wafer (116). Rotating arm (118) positions the wafer (116) over the pad (114) and applies pressure. During wafer polishing particles build up on the polishing pad (114) reducing its effectiveness. Either during or in between wafer polishing (or both), conditioning head (122) is applied to pad (114) to remove the particles from pad (114) into the slurry (120). Conditioning head (122) comprises a semiconductor substrate (126) that is patterned and etched to form a plurality of geometries (128) having a feature size on the order of polishing pad (114) cell size.
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Number of Claims:
10
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Owner
Published
May 26, 1998
Application Number
08/719,106
Filed
September 24, 1996
US Classification
216/41   216/51 216/67 216/79 438/322 438/323 438/324
Int'l Classification
B24B   37/04   (20060101)   B24B   53/007   (20060101)  
Examiner
Parent Case
This application is a continuation of application Ser. No. 08/482,539, filed Jun. 7, 1995, now abandoned, which is a Division, of application Ser. No. 08/281,391, U.S. Pat. No. 5,536,202, filed on Jul. 27, 1984.
USPTO Field of Search
430/313   430/322   430/329   430/325   430/323   430/324   216/47   216/67   216/79   216/42   216/51   216/41   451/285   451/398  
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