Polishing pad for wafer polishing apparatus and manufacturing method therefor
AssigneeSK Siltron Co., Ltd.
InventorJin Woo Ahn
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Abstract
The present invention provides a polishing pad for a wafer polishing apparatus, comprising: an upper pad having a front surface part, which has a cut surface and is in contact with a wafer, a rear surface part positioned on the lower part of the front surface part, and a plurality of grid grooves passing through the front surface part and the rear surface part; a lower pad, which is arranged on the lower part of the upper pad and can be attached to a surface plate; and an adhesion part positioned between the upper pad and the lower pad to couple the upper pad with the lower pad.
Claims6
A method of manufacturing a polishing pad for a wafer polishing apparatus, the method comprising:
- a film coating step of coating a film on a nap layer;
- a grooving step of forming grooves in a back portion of the nap layer;
- a lamination step of bonding a non-woven fabric layer to the back portion of the nap layer;
- and
- a buffing step of buffing a front portion of the nap layer to epose the grooves.
Dependencies are inferred from the claim text.