Wafer cleaning apparatus
First Claim
1. A wafer cleaning apparatus comprising:
- a first brush;
a second brush located horizontally from said first brush, said first brush and said second brush defining a region in between;
a pair of rollers located vertically below said region defined by said first brush and said second brush;
a first brush positioner which moves said first brush from a first position to a second position, wherein said first brush positioner comprises a first plate, said first brush mounted to a first shaft mounted to said first plates; and
a second brush positioner which moves said second brush from a first position to a second position, a distance between said first brush and said second brush being greater when said first brush is in said first position and said second brush is in said first position than when said first brush is in said second position and said second brush is in said second position, wherein said second brush positioner comprises a second plate, said second brush mounted to a second shaft mounted to said second plate, said first plate being coupled to said second plate by a pivot.
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus for cleaning a wafer oriented vertically is provided. The apparatus includes a first brush and a second brush located horizontally from the first brush. During use, a wafer is orientated vertically between the first and second brushes. The brushes are brought into contact with the wafer and rotated thereby engaging the wafer with rollers. By rotating the rollers, the wafer is also rotated. Liquid is sprayed towards the brushes and wafer. By orienting the wafer vertically, liquid and particulates contained therein readily fall from the wafer due to gravity. This is particularly advantageous when cleaning larger diameter wafers in which particulates must be removed from a larger wafer surface area.
66 Citations
15 Claims
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1. A wafer cleaning apparatus comprising:
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a first brush; a second brush located horizontally from said first brush, said first brush and said second brush defining a region in between; a pair of rollers located vertically below said region defined by said first brush and said second brush; a first brush positioner which moves said first brush from a first position to a second position, wherein said first brush positioner comprises a first plate, said first brush mounted to a first shaft mounted to said first plates; and a second brush positioner which moves said second brush from a first position to a second position, a distance between said first brush and said second brush being greater when said first brush is in said first position and said second brush is in said first position than when said first brush is in said second position and said second brush is in said second position, wherein said second brush positioner comprises a second plate, said second brush mounted to a second shaft mounted to said second plate, said first plate being coupled to said second plate by a pivot. - View Dependent Claims (2, 3, 4)
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5. A wafer cleaning apparatus comprising:
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a first brush; a second brush located horizontally from said first brush, said first brush and said second brush defining a region in between; a pair of rollers located vertically below said region defined by said first brush and said second brush; a housing having a vertical slot therein; and a door which opens and closes said vertical slot. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A wafer cleaning apparatus comprising:
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a first brush; a second brush located horizontally from said first brush, said first brush and said second brush defining a region in between; a pair of rollers located vertically below said region defined by said first brush and said second brush; a first shaft having a first end with said first brush mounted thereon; and a second shaft having a first end with said second brush mounted thereon, wherein said first shaft has a cavity formed therein and has perforations in the region where said first brush is mounted and wherein said second shaft has a cavity formed therein and has perforations in the region where said second brush is mounted.
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13. A wafer cleaning apparatus comprising:
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a first brush, a second brush located horizontally from said first brush, said first brush and said second brush defining a region in between; a pair of rollers located vertically below said region defined by said first brush and said second brush; a first set of spray nozzles capable of spraying a first liquid towards said first brush; a second set of spray nozzles capable of spraying said first liquid towards said second brush; a third set of spray nozzles capable of spraying a second liquid towards said first brush; and a fourth set of spray nozzles capable of spraying said second liquid towards said second brush. - View Dependent Claims (14)
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15. A wafer cleaning apparatus comprising:
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a first brush; a second brush located horizontally from said first brush; a first set of spray nozzles, wherein said first set of spray nozzles comprises a first nozzle capable of spraying a first liquid towards said first brush and a second nozzle capable of spraying a second liquid towards said first brush; and a second set of spray nozzles, wherein said second set of spray nozzles comprises a first nozzle capable of spraying said first liquid towards said second brush and a second nozzle capable of spraying said second liquid towards said second brush, said second liquid being different than said first liquid.
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Specification