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US5545076A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for gringing a semiconductor wafer while removing dust therefrom

Assignee: Samsung Electronics Co Ltd
•
Filing: 1995-05-15
•
Granted: 1996-08-13
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Expires: 2015-05-15
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Abstract

Abstract An apparatus for polish-grinding a semiconductor wafer which assuredly removes contaminant dusts from the polished wafer includes a grinding device for polishing a surface of the wafer. The grinding device has a chuck table on which the wafer is laid, a grinding wheel for grindingly polishing the wafer, and means for supplying water to the wafer. The means for supplying water provides water to region of contact between the grinding wheel and the wafer. The apparatus also includes a cleaning device for cleaning any remaining dust on the wafer, having a spin chuck table for rotating the polished wafer, means for supplying a detergent to the polished wafer. The means for supplying the detergent injects the detergent on the surfaces of the polished wafer. The apparatus also includes a controller for controlling the grinding device and the cleaning device. Accordingly, the apparatus according to the present invention can prevent dust from being suctioned to the front side of a wafer, and can remove dust during and after a wafer-grinding process.

Inventors

  • 👤 Tae-Jin Yun
  • 👤 Dong-Pyo Hong
  • 👤 Byung-Suk Park

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 14:27
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/005; B08; B08B; B08B3/00; B08B3/02; B24B7/00; B24B7/20; B24B7/22; B24B7/228; H; H10; H10P; H10P72/00; H10P72/04; H10P72/0402; H10P72/0406; H10P72/0411; H10P72/0414; Y; Y10; Y10S; Y10S134/00; Y10S134/902; Y10S438/00; Y10S438/959

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 75 words
A polishing apparatus comprising: a wafer-polishing device for polishing a semiconductor wafer, said wafer-polishing device including at least two fluid supply paths for providing at least two fluid flows having different directions to the semiconductor wafer; a wafer-cleaning device for providing a fluid flow to each of an upper surface and a lower surface of the semiconductor wafer; and a wafer-conveying device for conveying a semiconductor wafer from said wafer-grinding device to said cleaning device.
Claim 2
Dependent Claim 75 words
A polishing apparatus comprising: a wafer-polishing device for polishing a semiconductor wafer, said wafer-polishing device including at least two fluid supply paths for providing at least two fluid flows having different directions to the semiconductor wafer; a wafer-cleaning device for providing a fluid flow to each of an upper surface and a lower surface of the semiconductor wafer; and a wafer-conveying device for conveying a semiconductor wafer from said wafer-grinding device to said cleaning device.
Claim 3
Dependent Claim 26 words
A polishing apparatus as claimed in claim 1, further comprising a fluid supply tank connected at least one of said wafer-polishing device and said wafer-cleaning device.
Claim 4
Dependent Claim 23 words
A polishing apparatus as claimed in claim 1, further comprising a controller unit operatively connected to said wafer-polishing device and said wafer-cleaning device.
Claim 5
Dependent Claim 23 words
A polishing apparatus as claimed in claim 1, wherein said wafer-cleaning device comprises a chuck table on which the semiconductor wafer is laid.
Claim 6
Dependent Claim 20 words
A polishing apparatus as claimed in claim 1, wherein water is provided to said wafer-polishing device and said wafer-cleaning device.
Claim 7
Dependent Claim 18 words
A polishing apparatus as claimed in claim 1, wherein a detergent solution is provided to said wafer-cleaning device.
Claim 8
Dependent Claim 24 words
A polishing apparatus as claimed in claim 1, wherein said wafer-cleaning device comprises a rotatable chuck table on which the semiconductor wafer is laid.
Claim 9
Dependent Claim 51 words
A polishing apparatus as claimed in claim 1, wherein said wafer-polishing device includes a grinding wheel, wherein said grinding wheel can contact the semiconductor wafer, wherein said at least two fluid supply paths supply fluid to at least part of a location at which said grinding wheel contacts the semiconductor wafer.

References Cited (Backward Citations)

US3342652A Cited
US4092176A Cited
US4064885A Cited
JPS6442067A Cited
US5348033A Cited
US5320706A Cited
US5384986A Cited
US5483717A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1999-08-13 2000-02-12 2000-08-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2003-08-13 2004-02-12 2004-08-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2007-08-13 2008-02-12 2008-08-13 $7700.00 Window Closed / Lapsed

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