WO2000046841A1 - Method and device for cleaning substrates - Google Patents
Method and device for cleaning substrates Download PDFInfo
- Publication number
- WO2000046841A1 WO2000046841A1 PCT/EP2000/000484 EP0000484W WO0046841A1 WO 2000046841 A1 WO2000046841 A1 WO 2000046841A1 EP 0000484 W EP0000484 W EP 0000484W WO 0046841 A1 WO0046841 A1 WO 0046841A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- cleaning
- tilted
- guide roller
- cleaning element
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67028—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
- H01L21/6704—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing
- H01L21/67046—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing using mainly scrubbing means, e.g. brushes
Definitions
- the present invention relates to a method and a device for cleaning substrates, in particular semiconductor wafers, with at least one rotatable cleaning element.
- Such cleaning devices are known, for example, in the semiconductor industry for cleaning wafers after chemical mechanical planarization (CMP).
- CMP chemical mechanical planarization
- Such cleaning devices use, for example, double-sided brush cleaners which are arranged on opposite sides of a semiconductor wafer. In these cleaning devices, the brush cleaners are arranged so that the semiconductor wafer to be cleaned lies either horizontally or vertically between the brushes.
- a brush cleaning device for wafers is known from JP6-326066.
- the device has a retaining ring which surrounds the wafer and which is rotatable in order to position the wafer for the cleaning process at a predetermined angle with respect to a horizontal.
- the present invention is therefore based on the object of providing a method and a device with which the cleaning of substrates can be carried out more efficiently and in a liquid-saving manner.
- this object is achieved by a method according to the preamble of claim 1 in that the substrate is tilted during cleaning.
- the process conditions can be adapted to the cleaning requirements.
- the dwell time of a rinsing liquid on the substrate can be changed and optimally adjusted during cleaning.
- the substrate is preferably tilted from a substantially vertical position into a substantially horizontal position and / or vice versa, as a result of which the advantages of both vertical cleaning and horizontal cleaning can be realized during cleaning.
- the substrate can also be tilted into any other arbitrary intermediate position and held there in order to optimally set the process conditions.
- the loading and unloading of the substrate is preferably carried out in a horizontal position, since the handling of the substrate is easiest in this position.
- At least one side of the substrate is brushed for cleaning the same.
- the substrate is preferably tilted by moving at least one brush in order to provide a simple tilting mechanism.
- the substrate is pressed against and rotated by at least one guide roller during the cleaning process.
- the guide roller ensures guidance and thus good positioning of the substrate within the cleaning device. It also allows the substrate to rotate for even cleaning.
- the substrate is preferably rotated by active rotation of the at least one guide roller.
- the substrate is removed by passive rotation of the at least one guide roller, i.e. rotated by pressing the substrate against the roller with a tangential component.
- the substrate is tilted by a movement of the at least one guide roller.
- the substrate is tilted by tilting the entire device.
- a liquid is preferably applied to the substrate during cleaning in order to promote the cleaning action of the cleaning elements.
- the liquid is applied to the substrate via brushes during cleaning, thereby ensuring that the brushes are always adequately wetted with liquid.
- the liquid is applied directly to the substrate via nozzles.
- the pressure exerted by the cleaning elements on the substrate is advantageously changed
- the above-mentioned object is also achieved by a device in which the substrate can be tilted.
- the advantages already mentioned are achieved by tilting the substrate.
- Brush cleaners in the form of rollers or cup brushes are preferably used as cleaning elements.
- a device for applying a liquid to the substrate has lines within at least one cleaning element, thereby ensuring uniform wetting of a substrate surface.
- guide elements are provided in one embodiment of the invention.
- the guide elements are advantageously movable in order to enable the cleaning element to move towards and away from the substrate.
- the method according to the invention and the device according to the invention are particularly suitable for cleaning flat objects, such as semiconductor wafers, thin panes such as photo masks, glass substrates, compact discs, Fiat panel displays, etc.
- Figure 1 is a schematic sectional view and a
- FIG. 2 views according to FIG. 1, the wafer being in a vertical position;
- FIG. 3 views according to FIG. 1, the wafer being in a position tilted by approximately 45 ° with respect to the horizontal;
- Figure 4 is a schematic front view of an end wall of the cleaning device according to the invention according to an embodiment of the invention;
- FIG. 5 shows a schematic front view of the end wall according to FIG. 5.
- FIG. 1 shows a sectional view and a top view of a cleaning device 1 according to the invention for flat, circular wafers 2.
- the cleaning device 1 has first and second cleaning brushes 4, 5 in the form of roller brushes, each of which can be rotated about central axes 7, 8 via a device (not shown).
- the brushes 4.5 are made of a sponge-like material such as PVA or bristles such as nylon.
- the wafer 2 is accommodated between the brushes 4, 5 and is held in a horizontal position between them in accordance with FIG. 1.
- the brushes 4, 5 have a length which is greater than the diameter of the wafer 2, so that the brushes 4, 5 protrude beyond the edge of the wafer 2.
- the brushes can be moved towards and away from one another in order to adjust the pressure applied to the wafer 2.
- the roller brush 4 is rotated clockwise during a cleaning process, while the roller brush 5 is rotated counterclockwise.
- the wafer 2 is pressed to the left against a guide roller 10.
- the guide roller 10 can be rotated via a device, not shown, in order to rotate the wafer 2 around its central axis.
- the guide roller 10 could also be turned passively, ie by rotating the wafer with a presses a tangential component onto the roller.
- the tangential component is achieved in that the roller brushes 4, 5 extend only over part of the wafer.
- FIG. 2 shows the device according to the invention according to FIG. 1, with the wafer 2 in a vertical position
- FIG. 3 shows the device according to FIG. 1 with the wafer 2 in a position tilted by approximately 45 ° with respect to the horizontal.
- a rinsing liquid is applied to the wafer via a device (not shown). For example, in several places within the
- nozzles for spraying the rinsing liquid onto the wafer surfaces may be provided.
- lines 4.5 can be provided within the brush rollers, via which lines the rinsing liquid is directed onto the wafer surfaces.
- the tilting of the wafer 2 can be done by tilting the entire device 1, i.e. including the drives, not shown, and the flushing liquid supply.
- the wafers 2 could be tilted by moving the brush rollers 4, 5, as will be explained below using the exemplary embodiment according to FIG. 4.
- FIG. 4 shows a schematic front view of a side wall 12 of the cleaning device 1.
- the brush rollers 4, 5 and the wafer 2 are shown in dotted or dashed lines.
- the side wall 12 has guide openings 14, 15, in which shafts 17, 18 of the brush rollers 4, 5 are received.
- the shafts 17, 18 are arranged with sufficient play in the guide openings 14, 15 so that they can be moved towards and away from one another in order to adjust the pressure applied by the brushes and thus the process parameters.
- the guide openings could also be in elements that can be moved relative to one another, e.g. Plates are designed to allow a relative movement of the waves received therein.
- the guide openings 14, 15 are curved and each form approximately a quarter of a ring segment.
- the shafts 17, 18 can be moved within the guide openings 14, 15 from the position shown in FIG. 4 to the position shown in FIG. 5, the shafts 17, 18 and thus the brush rollers 4, 5 being guided symmetrically around a center point of the device.
- a wafer 2 located between the brush rollers 4, 5 is held horizontally, and in the position shown in FIG. 5, a wafer 2 located between the brush rollers 4, 5 is held in a vertical position.
- the wafer 2 is tilted between the horizontal and vertical positions.
- the guide roller 10 (not shown in FIGS. 4 and 5) can, in the same way as the brush rollers 4, 5, within a guide opening in the side wall 12. leads. Instead of actively moving the shafts 17, 18 of the brush rollers 4, 5, the wafer 2 could also be tilted by actively moving the guide roller 10 within the associated guide opening.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Cleaning Or Drying Semiconductors (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00909093A EP1153418A1 (en) | 1999-02-04 | 2000-01-22 | Method and device for cleaning substrates |
JP2000597829A JP2002536830A (en) | 1999-02-04 | 2000-01-22 | Method and apparatus for cleaning a substrate |
KR1020017009875A KR20010101997A (en) | 1999-02-04 | 2000-01-22 | Method and device for cleaning substrates |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19904548A DE19904548C2 (en) | 1999-02-04 | 1999-02-04 | Method and device for cleaning substrates |
DE19904548.8 | 1999-02-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000046841A1 true WO2000046841A1 (en) | 2000-08-10 |
Family
ID=7896442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/000484 WO2000046841A1 (en) | 1999-02-04 | 2000-01-22 | Method and device for cleaning substrates |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1153418A1 (en) |
JP (1) | JP2002536830A (en) |
KR (1) | KR20010101997A (en) |
DE (1) | DE19904548C2 (en) |
WO (1) | WO2000046841A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6748961B2 (en) * | 2001-03-30 | 2004-06-15 | Lam Research Corporation | Angular spin, rinse, and dry module and methods for making and implementing the same |
WO2006111193A1 (en) | 2005-04-20 | 2006-10-26 | Freescale Semiconductor, Inc. | Apparatus for cleaning of circuit substrates |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60033811T2 (en) | 2000-09-08 | 2007-11-15 | Qimonda Dresden Gmbh & Co. Ohg | Wafer cleaning device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06326066A (en) * | 1993-05-12 | 1994-11-25 | Sony Corp | Brush scrubbing apparatus |
WO1998001892A1 (en) * | 1996-07-08 | 1998-01-15 | Speedfam Corporation | Methods and apparatus for cleaning, rinsing, and drying wafers |
-
1999
- 1999-02-04 DE DE19904548A patent/DE19904548C2/en not_active Expired - Fee Related
-
2000
- 2000-01-22 WO PCT/EP2000/000484 patent/WO2000046841A1/en not_active Application Discontinuation
- 2000-01-22 KR KR1020017009875A patent/KR20010101997A/en not_active Withdrawn
- 2000-01-22 EP EP00909093A patent/EP1153418A1/en not_active Withdrawn
- 2000-01-22 JP JP2000597829A patent/JP2002536830A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06326066A (en) * | 1993-05-12 | 1994-11-25 | Sony Corp | Brush scrubbing apparatus |
WO1998001892A1 (en) * | 1996-07-08 | 1998-01-15 | Speedfam Corporation | Methods and apparatus for cleaning, rinsing, and drying wafers |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 02 31 March 1995 (1995-03-31) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6748961B2 (en) * | 2001-03-30 | 2004-06-15 | Lam Research Corporation | Angular spin, rinse, and dry module and methods for making and implementing the same |
WO2006111193A1 (en) | 2005-04-20 | 2006-10-26 | Freescale Semiconductor, Inc. | Apparatus for cleaning of circuit substrates |
US8752228B2 (en) | 2005-04-20 | 2014-06-17 | Freescale Semiconductor, Inc. | Apparatus for cleaning of circuit substrates |
Also Published As
Publication number | Publication date |
---|---|
EP1153418A1 (en) | 2001-11-14 |
KR20010101997A (en) | 2001-11-15 |
DE19904548C2 (en) | 2001-07-05 |
DE19904548A1 (en) | 2000-08-17 |
JP2002536830A (en) | 2002-10-29 |
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