WO2001026829A1 - Single semiconductor wafer processor - Google Patents
Single semiconductor wafer processor Download PDFInfo
- Publication number
- WO2001026829A1 WO2001026829A1 PCT/US2000/026705 US0026705W WO0126829A1 WO 2001026829 A1 WO2001026829 A1 WO 2001026829A1 US 0026705 W US0026705 W US 0026705W WO 0126829 A1 WO0126829 A1 WO 0126829A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- article
- rotor
- wafer
- lid
- chamber
- 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
- H01L21/67—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
- H01L21/67034—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for drying
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S134/00—Cleaning and liquid contact with solids
- Y10S134/902—Semiconductor wafer
Definitions
- the field of the invention is manufacturing semiconductor wafers and similar articles.
- Semiconductor devices are used in a wide range of consumer electronics, computers, communication equipment, and various other products.
- Semiconductor devices are generally made from wafers of silicon, or other semiconductor materials.
- the wafers are processed through many manufacturing steps, to form microelectronic circuits.
- the wafers are processed using fluid chemicals (e.g., acids, caustics, etchants, photoresists, plating solutions, etc.). They are also rinsed and dried, to remove contaminants which can cause defects in the end product devices or interfere with subsequent process steps.
- fluid chemicals e.g., acids, caustics, etchants, photoresists, plating solutions, etc.
- the processing or rinsing fluids themselves have potential for unintentionally depositing a residue or particulate contaminants on the wafer, if fluid dries on the wafer surface.
- fluid is preferably removed quickly and completely from the wafer.
- DI water Deionized (“01”) water is frequently used as a rinsing fluid. DI water, as well as other fluids used in manufacturing semiconductors, will cling to wafer surfaces in sheets or droplets, due to surface tension. Consequently, the surface tension forces must be overcome to remove the sheets or droplets, and to thereby leave no fluid-borne contaminants on the wafer surfaces.
- a method for processing a semiconductor article or wafer includes the steps of withdrawing the article from a processing fluid at an inclined angle. The article is withdrawn at a selected withdrawal rate. The article is advantageously exposed to a vapor of an organic solvent. After the wafer is completely withdrawn from the fluid, the wafer is spun momentarily, via a rotor, to centrifugally remove any fluid remaining on the wafer.
- a dry gas such as nitrogen
- the spin time of the wafer is limited, to avoid drying fluid on the wafer.
- an apparatus for drying a semiconductor article such as a wafer, includes a lid attached to a body.
- a basin in the body holds a rinsing liquid.
- a rotor preferably within the body and above the basin, has a spin motor for spinning a wafer.
- An elevator attached to the rotor advantageously moves the rotor vertically, to immerse and withdraw a wafer from the rinsing liquid.
- a pivot motor in the elevator may be provided to pivot the rotor into a face up position, for loading and unloading a wafer, and into a downwardly inclined position, so that the wafer is withdrawn from the liquid at an inclined angle.
- Fig. 1 is a perspective view of the invention
- Fig. 2 is a section view taken along line 2-2 of Fig. 1, and showing the dryer in a closed position;
- Fig. 3 is a section view taken along line 3-3 of Fig. 1. and showing the dryer with the lid moving into an open position.
- the processor 10 of the invention has a body 12 having upper and lower cylindrical side walls 13 and 15.
- a lid 14 is pivotably attached to the body 12.
- a lid motor or actuator 18 preferably attached to the body 12 raises and lowers the lid 14, or pivots the lid 14 upwardly, to open and close the body 12.
- a bottom section 17 is joined to the lower cylindrical side wall 15.
- a basin 38 is provided within the body 12.
- the basin 38 may have serrations or notches 70 at its upper rim.
- An inlet 40 connects a rinsing liquid source, such as deionized water, into the basin 38.
- a drain 42 extends from the bottom of the basin 38 to a facility drain. Vapor/gas inlets 24 are connected to nozzles 44 through ducts 26.
- a seal or o-ring 34 on an inner rim 36 of the upper cylindrical side wall 13 may be provided to close off the body 12 when the lid 14 is brought down to a closed position, with the body 12 then forming an enclosed chamber 25.
- an annular lid extension 32 on the lid 14 engages against the o-ring 34, when the lid 14 is in the down or closed position (as shown in Fig. 2).
- a rotor assembly 50 within the body 12 or chamber 25 is preferably supported on a pivot axle 52.
- the rotor assembly 50 as shown includes a rotor plate 62 attached to a spin shaft 60 extending through a spin motor 54. Fingers 56 on the rotor plate 62 or similar devices hold a wafer 58, or other flat media article.
- the pivot axle 52 preferably extends through a vertical slot 55 in the upper cylindrical side wall 13, and is attached to an elevator 16 on the outside of the body 12.
- the vertical slot 55 is preferably closed off or sealed with a bellows or similar component which allows for vertical translation and pivoting movement of the pivot axle 52, while largely preventing vapors or gases from passing into or out of the chamber 25.
- the elevator 16 may have a pivot motor 20 for turning or pivoting (in elevation) the pivot axle 52 and the rotor assembly 50.
- the elevator 16 also preferably has a linear lift motor 21 attached to the pivot axle 52 and pivot motor 20, so that the rotor assembly 50 within the chamber 25 can be raised and lowered, (along with the pivot axle 52 and pivot motor 20).
- An exhaust duct 29 connects an exhaust port 30 in the lid 14 to a facility vapor/gas removal or recovery.
- the spin motor 54 may be an electric motor powered via wires extending from the spin motor 54 through the pivot axle 52 and making electrical connections with a power source in the elevator 16.
- the spin motor 54, pivot motor 20, and lift motor 21 may be electrical, fluid driven or pneumatic.
- the processor 10 is intended to process one wafer at a time.
- the lid 14 is raised up and/or pivoted open via the lid actuator 18.
- the rotor assembly 50 is in a right side up position, i.e., with the fingers 56 facing up, to receive a wafer 58.
- a wafer, to be processed, is placed into the fingers 56, either manually, or via a robot.
- the fingers 56 secure the wafer to the rotor assembly 50.
- the pivot motor 20 is energized, turning the pivot axle 52 and rotor assembly 50, so that the rotor assembly 50 pivots into a face down position (as shown in Fig. 3).
- the lid actuator 28 closes the lid 14, with the lid extension 32 sealing the lid 14 against the upper cylindrical side wall 13 of the body 12.
- a rinsing fluid such as DI water
- a rinsing fluid fills the basin 38 via entry through the inlet 40.
- a diffuser plate 75 provides for more even upflow of fluid, as the fluid fills the basin.
- the lift motor 21 is energized to lower the rotor assembly 50, so that the wafer 58 is immersed into the rinsing liquid 39.
- the basin 38 is preferably overflowing with the DI water or processing fluid.
- a surface tension gradient is created between the interface at the liquid-solid-gas contact line, and the free liquid surface away from the contact line. The gradient is created and sustained by providing a continuous exchange of the meniscus, by overflowing the DI water or fluid.
- the notches 70 at the upper rim of the basin provide a uniform extraction of the surface layer of the fluid, to remove any accumulated impurities or organic concentration. This maintains a uniform surface tension gradient.
- More than one process fluid can be used in the basin, with the wafer remaining in the basin, for multiple process steps using multiple fluids, before the wafer is extracted and dried.
- Megasonic transducers 72 may be provided on the basin, to provide a cleaning process, before drying.
- wafer here means any flat media such as semiconductor wafers, photomasks, flat panel displays, memory disks, CD glass, etc.
- the pivot motor 20 is actuated to pivot the rotor assembly, so that the wafer 58 is moved into an inclined angle A, from horizontal, as shown in Fig. 2.
- the inclined angle A is preferably in the range of 3-45° from horizontal, more preferably in the range of 5-30°. and still more preferably between 5-15°, with 10° being suitable for many applications.
- Angle A is the angle formed by the liquid surface and the bottom surface or side of the wafer facing the liquid.
- the lift motor 21 is then reversed to lift the rotor assembly 50 up, thereby withdrawing the wafer 58 from the rinsing liquid 39, while the wafer 58 is maintained at the inclined angle A.
- a vapor of an organic solvent preferably isopropyl alcohol
- the vapor is introduced into the basin 38 at a position at or just above the surface of the rinsing liquid 39.
- the vapor should be non-condensing, and is preferably mixed with nitrogen or other non-reacting gas.
- the lift motor 21 continues to lift the rotor assembly 50, until the wafer 58 is entirely withdrawn from the rinsing liquid 39.
- the spin motor 54 is then turned on briefly, to fling off any liquid remaining on the wafer 58, the fingers 56, or the rotor surfaces.
- the spin time is limited, to avoid allowing any liquid to dry on the wafer 58.
- the spinning of the wafer 58 may take place with the rotor assembly 50 at any position or incline angle, or even while the rotor assembly is pivoting. However, spinning is preferably done with the wafer either horizontal, or at the inclined angle A.
- the wafer 58 is preferably spun at from 300-1800 rpm, preferably at 500-800 rpm, for an interval from 5-30 seconds, or for the least amount of time necessary to remove any remaining liquid from the wafer. As in practice, any remaining liquid tends to be located near the peripheral edges of the wafer
- the rotor assembly 50 may be upside down, as shown in Figs. 2 and 3. or right side up, during spinning of the wafer. After spinning, the lid 14 is reopened, so that the dry wafer can be removed from the dryer 10. The rinsing liquid 39 is drained from the basin 38 through the drain pipe 42. Fresh rinsing liquid may then be supplied to the basin 38, for processing the next wafer.
- a continuous linear meniscus of rinsing liquid 39 is preferably formed on the wafer surface, minimizing droplets left on the wafer.
- the rate of lift or withdrawal of the wafer from the rinsing liquid 39 is advantageous controlled to maintain the continuous meniscus.
- the solvent vapor reduces the surface tension of the rinsing liquid, causing the liquid to more easily run off the wafer.
- Spinning the wafer centrifugally removes any remaining liquid from the wafer. It also removes any remaining rinsing or other processing liquid from the rotor and other components supporting the wafer. This avoids the need for intricate self draining designs for the fingers and other wafer supporting elements.
- release of the solvent vapor (and other chemicals if used) is minimized or prevented.
- the exhaust duct 29 on the lid 14 exhausts gases and vapors from the chamber 25 in a controlled manor.
- process chemicals in fluid form are used instead of a rinsing liquid.
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 (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00968470A EP1242198A4 (en) | 1999-10-08 | 2000-09-28 | Single semiconductor wafer processor |
JP2001529881A JP2003511863A (en) | 1999-10-08 | 2000-09-28 | Single semiconductor wafer processor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/416,225 US6395101B1 (en) | 1999-10-08 | 1999-10-08 | Single semiconductor wafer processor |
US09/416,225 | 1999-10-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001026829A1 true WO2001026829A1 (en) | 2001-04-19 |
Family
ID=23649094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2000/026705 WO2001026829A1 (en) | 1999-10-08 | 2000-09-28 | Single semiconductor wafer processor |
Country Status (4)
Country | Link |
---|---|
US (2) | US6395101B1 (en) |
EP (1) | EP1242198A4 (en) |
JP (1) | JP2003511863A (en) |
WO (1) | WO2001026829A1 (en) |
Families Citing this family (49)
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US6258220B1 (en) * | 1998-11-30 | 2001-07-10 | Applied Materials, Inc. | Electro-chemical deposition system |
US6328814B1 (en) | 1999-03-26 | 2001-12-11 | Applied Materials, Inc. | Apparatus for cleaning and drying substrates |
US6955516B2 (en) * | 2001-11-02 | 2005-10-18 | Applied Materials, Inc. | Single wafer dryer and drying methods |
US6837978B1 (en) | 1999-04-08 | 2005-01-04 | Applied Materials, Inc. | Deposition uniformity control for electroplating apparatus, and associated method |
US6582578B1 (en) | 1999-04-08 | 2003-06-24 | Applied Materials, Inc. | Method and associated apparatus for tilting a substrate upon entry for metal deposition |
FR2808120B1 (en) * | 2000-04-20 | 2002-07-26 | Karl Suss France | METHOD AND DEVICE FOR TREATING THE SUBSTRATE OF AN INTEGRATED CIRCUIT OR THE LIKE PRODUCT DURING MANUFACTURE |
US6913680B1 (en) | 2000-05-02 | 2005-07-05 | Applied Materials, Inc. | Method of application of electrical biasing to enhance metal deposition |
EP1337693A2 (en) | 2000-05-23 | 2003-08-27 | Applied Materials, Inc. | Method and apparatus to overcome anomalies in copper seed layers and to tune for feature size and aspect ratio |
US20050145499A1 (en) * | 2000-06-05 | 2005-07-07 | Applied Materials, Inc. | Plating of a thin metal seed layer |
JP2002093765A (en) * | 2000-09-20 | 2002-03-29 | Kaijo Corp | Method and equipment for cleaning substrate |
EP1470268A2 (en) * | 2000-10-03 | 2004-10-27 | Applied Materials, Inc. | Method and associated apparatus for tilting a substrate upon entry for metal deposition |
US6609632B2 (en) * | 2001-01-17 | 2003-08-26 | Simplus Systems Corporation | Removable lid and floating pivot |
US20040020780A1 (en) * | 2001-01-18 | 2004-02-05 | Hey H. Peter W. | Immersion bias for use in electro-chemical plating system |
US6592680B2 (en) * | 2001-03-22 | 2003-07-15 | Agilent Technologies, Inc. | Integrated circuit assembly cleaning apparatus and method |
US6405452B1 (en) * | 2001-03-28 | 2002-06-18 | Taiwan Semiconductor Manufacturing Co., Ltd | Method and apparatus for drying wafers after wet bench |
US6865937B2 (en) * | 2001-05-14 | 2005-03-15 | Applied Materials, Inc. | Deionized water spray on loss of fluid processing tank exhaust |
US6551487B1 (en) * | 2001-05-31 | 2003-04-22 | Novellus Systems, Inc. | Methods and apparatus for controlled-angle wafer immersion |
US7513062B2 (en) * | 2001-11-02 | 2009-04-07 | Applied Materials, Inc. | Single wafer dryer and drying methods |
US6911136B2 (en) * | 2002-04-29 | 2005-06-28 | Applied Materials, Inc. | Method for regulating the electrical power applied to a substrate during an immersion process |
US6875331B2 (en) * | 2002-07-11 | 2005-04-05 | Applied Materials, Inc. | Anode isolation by diffusion differentials |
US20040134775A1 (en) * | 2002-07-24 | 2004-07-15 | Applied Materials, Inc. | Electrochemical processing cell |
US7128823B2 (en) * | 2002-07-24 | 2006-10-31 | Applied Materials, Inc. | Anolyte for copper plating |
US7247222B2 (en) * | 2002-07-24 | 2007-07-24 | Applied Materials, Inc. | Electrochemical processing cell |
US7223323B2 (en) * | 2002-07-24 | 2007-05-29 | Applied Materials, Inc. | Multi-chemistry plating system |
US20040217005A1 (en) * | 2002-07-24 | 2004-11-04 | Aron Rosenfeld | Method for electroplating bath chemistry control |
US20040016648A1 (en) * | 2002-07-24 | 2004-01-29 | Applied Materials, Inc. | Tilted electrochemical plating cell with constant wafer immersion angle |
US6875289B2 (en) * | 2002-09-13 | 2005-04-05 | Fsi International, Inc. | Semiconductor wafer cleaning systems and methods |
US20040192066A1 (en) * | 2003-02-18 | 2004-09-30 | Applied Materials, Inc. | Method for immersing a substrate |
US7045040B2 (en) | 2003-03-20 | 2006-05-16 | Asm Nutool, Inc. | Process and system for eliminating gas bubbles during electrochemical processing |
US20050029106A1 (en) * | 2003-08-07 | 2005-02-10 | Laila Baniahmad | Reduction of defects in conductive layers during electroplating |
US20050092602A1 (en) * | 2003-10-29 | 2005-05-05 | Harald Herchen | Electrochemical plating cell having a membrane stack |
US20050092601A1 (en) * | 2003-10-29 | 2005-05-05 | Harald Herchen | Electrochemical plating cell having a diffusion member |
US8277569B2 (en) * | 2004-07-01 | 2012-10-02 | Dainippon Screen Mfg. Co., Ltd. | Substrate treating apparatus and substrate treating method |
US20060102467A1 (en) * | 2004-11-15 | 2006-05-18 | Harald Herchen | Current collimation for thin seed and direct plating |
US20060175201A1 (en) * | 2005-02-07 | 2006-08-10 | Hooman Hafezi | Immersion process for electroplating applications |
US20060201541A1 (en) * | 2005-03-11 | 2006-09-14 | Semiconductor Energy Laboratory Co., Ltd. | Cleaning-drying apparatus and cleaning-drying method |
KR100651919B1 (en) * | 2005-09-29 | 2006-12-01 | 엘지전자 주식회사 | Mobile telecommunication device having function for adjusting recording rate and method thereby |
JP2008091364A (en) * | 2006-09-29 | 2008-04-17 | Dainippon Screen Mfg Co Ltd | Method and equipment for processing substrate |
US7980000B2 (en) * | 2006-12-29 | 2011-07-19 | Applied Materials, Inc. | Vapor dryer having hydrophilic end effector |
US10041169B2 (en) * | 2008-05-27 | 2018-08-07 | Picosun Oy | System and method for loading a substrate holder carrying a batch of vertically placed substrates into an atomic layer deposition reactor |
US8282334B2 (en) | 2008-08-01 | 2012-10-09 | Picosun Oy | Atomic layer deposition apparatus and loading methods |
US10011917B2 (en) | 2008-11-07 | 2018-07-03 | Lam Research Corporation | Control of current density in an electroplating apparatus |
US11225727B2 (en) | 2008-11-07 | 2022-01-18 | Lam Research Corporation | Control of current density in an electroplating apparatus |
US9385035B2 (en) | 2010-05-24 | 2016-07-05 | Novellus Systems, Inc. | Current ramping and current pulsing entry of substrates for electroplating |
US9028666B2 (en) | 2011-05-17 | 2015-05-12 | Novellus Systems, Inc. | Wetting wave front control for reduced air entrapment during wafer entry into electroplating bath |
US9449862B2 (en) | 2011-06-03 | 2016-09-20 | Tel Nexx, Inc. | Parallel single substrate processing system |
CN107564808B (en) * | 2017-09-01 | 2020-01-21 | 深圳市翔通光电技术有限公司 | Cutting method of free space optical isolator chip and optical isolator microchip |
WO2021159078A1 (en) * | 2020-02-07 | 2021-08-12 | Centrillion Technologies, Inc. | Systems and methods for chemical synthesis on wafers |
CN112657921B (en) * | 2020-12-23 | 2023-01-31 | 上海集成电路研发中心有限公司 | Cleaning device and cleaning method for deep hole and deep groove |
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-
1999
- 1999-10-08 US US09/416,225 patent/US6395101B1/en not_active Expired - Lifetime
-
2000
- 2000-09-28 JP JP2001529881A patent/JP2003511863A/en active Pending
- 2000-09-28 EP EP00968470A patent/EP1242198A4/en not_active Withdrawn
- 2000-09-28 WO PCT/US2000/026705 patent/WO2001026829A1/en active Application Filing
-
2001
- 2001-05-17 US US09/859,930 patent/US6374837B2/en not_active Expired - Lifetime
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US3727620A (en) * | 1970-03-18 | 1973-04-17 | Fluoroware Of California Inc | Rinsing and drying device |
US4643774A (en) * | 1984-04-19 | 1987-02-17 | Sharp Corporation | Method of washing and drying substrates |
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US4816081A (en) * | 1987-02-17 | 1989-03-28 | Fsi Corporation | Apparatus and process for static drying of substrates |
US5022419A (en) * | 1987-04-27 | 1991-06-11 | Semitool, Inc. | Rinser dryer system |
US5421905A (en) * | 1991-04-02 | 1995-06-06 | Tokyo Electron Limited | Method for washing wafers |
US5932027A (en) * | 1994-11-14 | 1999-08-03 | Yieldup International | Cleaning and drying photoresist coated wafers |
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Also Published As
Publication number | Publication date |
---|---|
JP2003511863A (en) | 2003-03-25 |
US6374837B2 (en) | 2002-04-23 |
US6395101B1 (en) | 2002-05-28 |
EP1242198A4 (en) | 2009-06-03 |
US20010020482A1 (en) | 2001-09-13 |
EP1242198A1 (en) | 2002-09-25 |
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