WO2002073675A1 - Procede de nettoyage pour dispositif de traitement de substrat et dispositif de traitement de substrat - Google Patents
Procede de nettoyage pour dispositif de traitement de substrat et dispositif de traitement de substrat Download PDFInfo
- Publication number
- WO2002073675A1 WO2002073675A1 PCT/JP2002/002008 JP0202008W WO02073675A1 WO 2002073675 A1 WO2002073675 A1 WO 2002073675A1 JP 0202008 W JP0202008 W JP 0202008W WO 02073675 A1 WO02073675 A1 WO 02073675A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- processing chamber
- processing apparatus
- cleaning
- complex
- substrate processing
- 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
-
- 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
- H01L21/67063—Apparatus for fluid treatment for etching
- H01L21/67069—Apparatus for fluid treatment for etching for drying etching
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/4401—Means for minimising impurities, e.g. dust, moisture or residual gas, in the reaction chamber
- C23C16/4405—Cleaning of reactor or parts inside the reactor by using reactive gases
Definitions
- the present invention relates to a cleaning method for removing an insulating substance attached to a substrate processing apparatus, and a substrate processing apparatus capable of performing such cleaning.
- a film forming apparatus for forming a thin film of an insulating material on the surface of a semiconductor wafer (hereinafter simply referred to as a “wafer”), for example, a chemical vapor deposition apparatus (CVD processing apparatus) has been used. ing.
- CVD processing apparatus chemical vapor deposition apparatus
- a wafer is placed on a heated susceptor, and a processing gas is supplied into the processing chamber to form a thin film of an insulating material on the wafer! "Ru.
- the insulating material adheres to the inner wall of the processing chamber and the susceptor after the thin film of the insulating material is formed on the wafer. If a thin film is formed on a wafer while leaving the insulating material attached to the inner wall of the processing chamber and the susceptor, the insulating material may peel off from the inner wall of the processing chamber and the susceptor and cause contamination. is there. In order to prevent such wafer contamination, it is necessary to clean the insulating material from the inner wall of the processing chamber and the susceptor.
- a cleaning method has been proposed in which an insulating material is removed using a fluorine-based cleaning gas such as C 1 F 3 , NF 3 , or C 2 F 6 .
- insulating materials such as lead zirconate titanate (Pb (Z r, T i) 0 3: Hereinafter, simply referred to as PZT. ) Or titanate Bariumusu strontium ((B a, S r) T i 0 3: below, each substance simply present in that) in BST removed instead of fluoride..
- lead (Pb), zirconium (Zr), nickel, 'ium (Ba), or strontium (Sr) has a low vapor pressure of fluoride. Therefore, in order to remove these insulating materials, it is necessary to raise the temperature inside the processing chamber to 600 ° C. or higher.
- the inner wall of the processing chamber, the susceptor, and the O-ring must be maintained at 600 ° C or higher. It must be formed of a material that does not soften at the cleaning temperature, and there is a problem that the feasibility is poor. In addition, even when cleaning is performed at 600 ° C., there is a problem that fluoride is left in the processing chamber with a fluorine-based cleaning gas. Disclosure of the invention
- the present invention has been made to solve the above-described conventional problems, and provides a method of cleaning a substrate processing apparatus and a substrate processing apparatus capable of reliably removing an insulating substance adhered to a processing chamber at a low temperature. The purpose is to do so.
- a cleaning method for a substrate processing apparatus includes the steps of: supplying a cleaning gas containing a compound having a carboxyl group into a processing chamber of a substrate processing apparatus for processing a substrate; And a complex discharging step of evacuating the inside of the processing chamber and discharging the complex of the insulating substance to the outside of the processing chamber.
- the complex formation step can be performed simultaneously with or It will be done shortly before.
- the cleaning method for a substrate processing apparatus includes: supplying a cleaning gas containing a compound having a carboxyl group into a processing chamber of the substrate processing apparatus for processing a substrate; Since the method includes a complex forming step of complexing the compound, a complex of an insulating substance can be formed at a low temperature. As a result, the insulating material can be reliably removed at a lower temperature than when a fluorine-based cleaning gas is used.
- the complex forming step is performed, for example, before the complex discharging step.
- the cleaning gas reaches every corner of the processing chamber. As a result, the insulating substance can be more reliably removed.
- the complex forming step and the complex discharging step are performed repeatedly and alternately. By repeatedly and alternately performing the complex forming step and the complex discharging step, complexing and discharging are completely performed, and the insulating substance can be efficiently removed.
- the complex forming step is a step of directly complexing the insulating substance.
- the number of steps for cleaning can be reduced, and the insulating substance can be easily removed in a short time.
- the insulating material is, for example, a material having a vapor pressure of 1.33 ⁇ 10 3 Pa or less at 600 ° C. in fluoride.
- the insulating material is, for example, a material containing Pb, Zr, and Ti, or a material containing Ba, Sr, and Ti.
- Cleaning method of the present invention Is used to ensure that even if the insulating material is a material containing Pb, Zr, and Ti, or a material containing Ba, Sr, and Ti, the insulating material is treated. Can be removed from within the processing chamber.
- the compound having a carboxyl group preferably has an alkyl group having a halogen atom directly bonded to the carboxyl group.
- the compound having a hydroxyl group is provided with an alkyl group having a halogen atom directly bonded to a carboxyl group, reactivity with an insulating substance can be increased.
- the compound having a carboxyl group is preferably trifluoroacetic acid (CF 3 CO 0 H).
- trifluoroacetic acid By using trifluoroacetic acid, the reactivity with the insulating substance can be further increased.
- the substrate processing apparatus is, for example, a film forming apparatus.
- a film forming apparatus By using the cleaning method of the substrate processing apparatus of the present invention, it is possible to reliably remove the insulating substance even in a film forming apparatus in which the insulating substance is easily attached in the processing chamber.
- a substrate processing apparatus includes a processing chamber, a susceptor disposed in the processing chamber, on which a substrate is mounted, and a processing for forming a film of an insulating material on the substrate in the processing chamber.
- a processing gas supply system for supplying gas, an exhaust system for exhausting the inside of the processing chamber, and a cleaning gas supply system for supplying a cleaning gas containing a compound having a carboxyl group for cleaning the inside of the processing chamber into the processing chamber It is characterized by having.
- the substrate processing apparatus of the present invention is provided with a cleaning gas supply system for supplying a cleaning gas containing a compound having a carboxyl group for cleaning the inside of the processing chamber.
- Related substances can be complexed. As a result, adheres to the processing chamber
- the used insulating material can be removed at a lower temperature and more reliably than when a fluorine-based cleaning gas is used.
- the compound having a carboxyl group preferably has an alkyl group having a halogen atom directly bonded to the carboxyl group.
- the compound having a hydroxyl group is provided with an alkyl group having a halogen atom directly bonded to a carboxyl group, reactivity with an insulating substance can be increased.
- the compound containing a carboxyl group is preferably trifluoroacetic acid.
- trifluoroacetic acid By using trifluoroacetic acid, the reactivity with an insulating substance can be further improved.
- FIG. 1 is a vertical sectional view schematically showing a CVD processing apparatus according to the first embodiment.
- FIG. 2 is a diagram schematically illustrating a processing gas supply system and a cleaning gas supply system of the CVD processing apparatus according to the first embodiment.
- FIG. 3 is a flow chart showing a film formation performed by the CVD processing apparatus according to the first embodiment.
- FIG. 4 is a flowchart showing a flow of cleaning performed by the CVD processing apparatus according to the first embodiment.
- FIGS. 5A and 5B are diagrams schematically showing a cleaning step according to the first embodiment.
- FIG. 6 is a graph showing the relationship between the temperature of the susceptor and the PZT removal rate of the CVD processing apparatus according to the first embodiment.
- FIG. 7 is a graph showing the relationship between the pressure inside the CVD processing apparatus according to the second embodiment and the PZT removal rate.
- FIG. 8 is a flowchart illustrating a flow of cleaning performed by the CVD apparatus according to the second embodiment.
- 9A and 9B are views schematically showing a cleaning step according to the second embodiment.
- FIG. 10 is a flowchart showing a cleaning process performed by the CVD processing apparatus according to the third embodiment.
- a substrate processing apparatus according to a first embodiment of the present invention will be described.
- a description will be given using a CVD processing apparatus that chemically forms a thin film on a film formation surface of a wafer as a substrate processing apparatus.
- FIG. 1 is a vertical sectional view schematically showing a CVD processing apparatus according to the present embodiment.
- the CVD processing apparatus 1 includes a processing chamber 2 formed in a substantially cylindrical shape from, for example, aluminum or stainless steel.
- the processing chamber 2 is configured to be vertically separable, and a .0 ring 3 is interposed in the separable part.
- a shower head 4 is provided on the ceiling of the processing chamber 2 via an O-ring 5.
- a processing gas for forming a thin film of an insulating material such as, for example, ⁇ BS or BS ⁇ on the surface on which the film is to be formed, and an insulating material adhered to the processing chamber 2 during the film formation
- the cleaning gas for removing the substance By supplying the cleaning gas for removing the substance, the processing gas and the cleaning gas are supplied into the processing chamber 2.
- the shower head 4 has a hollow structure, and a plurality of discharge holes 6 are formed in a lower portion of the shower head 4. By forming the plurality of discharge holes 6, the processing gas and the cleaning gas supplied into the shower head 4 are formed. The gas diffuses in the shower head 4 and is uniformly discharged between the shower head 4 and a susceptor 19 described later.
- a processing gas supply system 7 for supplying a processing gas and a cleaning gas supply system 9 for supplying a cleaning gas are connected to an upper portion of the shower head 4.
- a vacuum exhaust system 10 for evacuating the inside of the processing chamber 2 is connected to the bottom of the processing chamber 2.
- the evacuation system 10 mainly includes a vacuum pump 11 such as a turbo molecular pump or a dry pump, an exhaust pipe 12 connected to the vacuum pump 11 and the bottom of the processing chamber 2, and an exhaust pipe 1 It comprises a shut-off valve 13 interposed in 2 to start or stop evacuation by opening and closing, and a pressure regulating valve 14 interposed in the exhaust pipe 12 to adjust the pressure in the processing chamber 2 by opening and closing. ing.
- the processing chamber 2 is evacuated.
- a resistance heating element 15 for heating the processing chamber 2 is wound around the processing chamber 2.
- An opening is provided in the side wall of the processing chamber 2.
- a gate valve 16 that opens and closes when a wafer W is loaded and unloaded to and from the processing chamber 2 is provided at an edge of the opening via an O-ring 17.
- a purge gas supply system 18 that supplies a purge gas such as a nitrogen gas is connected to the processing chamber 2. By supplying a purge gas into the processing chamber 2, the inside of the processing chamber 2 that has been evacuated is returned to the atmospheric pressure.
- a substantially disk-shaped susceptor 19 on which the wafer W is placed is disposed.
- the susceptor 19 is made of, for example, aluminum nitride, silicon nitride, amorphous carbon, or composite carbon. Wafer on top of suscept evening 19 By supplying a processing gas while W is mounted, a thin film of an insulating material is formed on the surface of the film to be formed on the wafer W.
- a susceptor heating member such as a resistance heating element or a heating lamp is provided in the susceptor 19. By heating the susceptor 19 with the susceptor heating member, the susceptor 19 is heated to a predetermined temperature.
- a resistance heating element 20 is used as a susceptor heating member will be described.
- An external power source 21 provided outside the processing chamber 2 is connected to the resistance heating element 20 via a lead wire.
- the resistance heating element 20 When a current flows from the external power supply 21 to the resistance heating element 20, the resistance heating element 20 generates heat.
- three riff holes 22 are formed in the vertical direction. Below the lift hole 22, three lift pins 2 3 are provided so as to be able to move up and down.
- the wafer W is placed on the susceptor 19 or separated from the susceptor 19 by raising and lowering the lifter pin 23 by driving a lifter (not shown).
- the lift pins 2 3 penetrate the processing chamber 2, but an elastic metal bellows 24 is provided at the penetrating portion of the processing chamber 2, so that the airtight inside the processing chamber 2 is provided. Nature is maintained.
- FIG. 2 is a diagram schematically showing the processing gas supply system 7 and the cleaning gas supply system 9 of the CVD processing apparatus 1 according to the present embodiment.
- the processing gas supply system 7 has a pipe 7 connected at one end to a top of the shower head 4 and at the other end to a carrier gas tank 71 containing a carrier gas such as argon gas. It has two.
- the side where the shower head 4 is provided is referred to as the downstream side, and the carrier gas tank
- the side on which the switch 71 is provided is the upstream side.
- the piping 72 is divided into three systems via a processing gas mixer 82 described later, as shown in FIG.
- the three separate lines 72 A, 72 B, and 72 C contain raw material tanks 73 A, 73 containing raw materials that constitute the processing gas, for example, lead-based raw materials, zirconium-based raw materials, and titanium-based raw materials.
- B, 73C are the first bypass pipes 74A, 74B, 74C, and the second bypass pipes 75A, 75B, 7 located downstream of the first bypass pipes 74A, 74B, 74C. Connected via 5C.
- the raw material tank 73A contains, for example, dibivalyl sodium lead (Pb (DPM) 2 ) which is a solid raw material as a lead-based raw material.
- Material The evening tank 73 B, Z r (t -0 C 4 H 9) 4 is housed a liquid material as for instance zirconium-based material.
- the raw material tank ⁇ 3 C, T is a liquid material as a titanium-based material For example i (i - 0 C a H 7) 4 is accommodated.
- valves 77 A, 77 Bs 77 C are interposed in the second bypass pipes 75 A, 75 B, 75 C, respectively.
- the carrier gas is supplied from the first bypass pipes 74A, 74B, 74C into the raw material tanks 73A, 73Bs 73C with the tubes 76A, 76B, 76C open.
- the raw materials contained in the ink tanks 73A, 73B, and 73C are bubbled, and the raw materials are vaporized. Then, these vaporized raw materials are supplied to the pipes 72A, 72B, 72C via the second bypass pipes 75A, 75B, 75C.
- the 72 B and 72 C have different mass flow rates to adjust the carrier gas flow rate.
- the mouth controller 78 A, 78 B, 78 C and the valves 79 A, 79 B, 79 C are interposed.
- a first bypass pipe 97 is connected to a pipe 92 between the mass mouth controller 94 and the valve 95.
- a second bypass pipe 98 is connected to a pipe 92 between the valve 95 and the dollar valve 96.
- a valve 99 is interposed in the first bypass pipe 97, and a valve 100 is interposed in the second bypass pipe 98.
- valves 79 A, 79 B, 79 C, valves 76 A, 76 B, 76 C Valves 77 A, 77 B, 77 C, the needle valves 80 A, 80 B, 80 C, and the valve 83 are closed, the supply of the processing gas is stopped, and the formation of the thin film of the insulating material is completed (Step 1 (4) ).
- Step 2 After the wafer W on which the thin film of the insulating material is formed is transferred from the inside of the processing chamber 2, the processing chamber 2 is heated to about 300 to 500 ° C., preferably about Heat to 500 ° C (step 2 (1 A)).
- the reason why the temperature of the processing chamber 2 is specified to be about 300 to 500 ° C. is that if the temperature exceeds this range, the supplied carboxylic acid is decomposed and the cleaning efficiency is reduced. It is because. Also, if the thickness is below this range, the insulating material adhered to the inner wall of the processing chamber 2 and the susceptor 19 will not be effectively removed.
- the valve 93, the valve 99, the valve 100, and the needle valve 96 are opened, and the cleaning gas is supplied into the processing chamber 2 (step 2 (2B)). ).
- the processing chamber 2 is evacuated, so that the cleaning gas reaches all corners of the processing chamber 2, and the processing chamber 2 is more reliably placed in the processing chamber 2.
- the adhered insulating substances can be removed.
- the cleaning gas can be saved, and the cost can be reduced.
- the cleaning method and the substrate processing apparatus for a substrate processing apparatus according to the present invention can be used in the semiconductor manufacturing industry.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Chemical Vapour Deposition (AREA)
- Drying Of Semiconductors (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020037011870A KR100570250B1 (ko) | 2001-03-14 | 2002-03-05 | 기판 처리 장치의 클리닝 방법 |
US10/471,579 US6893964B2 (en) | 2001-03-14 | 2002-03-05 | Cleaning method for substrate treatment device and substrate treatment device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001-72711 | 2001-03-14 | ||
JP2001072711A JP4754080B2 (ja) | 2001-03-14 | 2001-03-14 | 基板処理装置のクリーニング方法及び基板処理装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002073675A1 true WO2002073675A1 (fr) | 2002-09-19 |
Family
ID=18930257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/002008 WO2002073675A1 (fr) | 2001-03-14 | 2002-03-05 | Procede de nettoyage pour dispositif de traitement de substrat et dispositif de traitement de substrat |
Country Status (6)
Country | Link |
---|---|
US (1) | US6893964B2 (ja) |
JP (1) | JP4754080B2 (ja) |
KR (1) | KR100570250B1 (ja) |
CN (1) | CN1322558C (ja) |
TW (1) | TW588402B (ja) |
WO (1) | WO2002073675A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4663059B2 (ja) * | 2000-03-10 | 2011-03-30 | 東京エレクトロン株式会社 | 処理装置のクリーニング方法 |
KR100474565B1 (ko) * | 2002-08-30 | 2005-03-10 | 삼성전자주식회사 | 소스 가스 공급 방법 및 장치 |
JP5259125B2 (ja) * | 2006-08-24 | 2013-08-07 | 富士通セミコンダクター株式会社 | 基板処理方法、半導体装置の製造方法、基板処理装置および記録媒体 |
CN103028564A (zh) * | 2011-09-30 | 2013-04-10 | 金宝电子(中国)有限公司 | 溶液供应单元、清洁系统及其清洁方法 |
JP6154677B2 (ja) * | 2013-06-28 | 2017-06-28 | 東京エレクトロン株式会社 | クリーニング方法及び処理装置 |
CN105765103B (zh) * | 2013-12-02 | 2018-09-25 | 应用材料公司 | 用于原位清洁工艺腔室的方法和装置 |
JP5762602B1 (ja) * | 2014-06-24 | 2015-08-12 | 株式会社日立国際電気 | 基板処理装置、半導体装置の製造方法及びプログラム |
US20160362782A1 (en) * | 2015-06-15 | 2016-12-15 | Taiwan Semiconductor Manufacturing Co., Ltd. | Gas dispenser and deposition apparatus using the same |
KR102128169B1 (ko) * | 2018-10-03 | 2020-06-29 | 주식회사 코윈디에스티 | 가스 유량 조절 장치 및 이를 이용하는 레이저 화학기상증착 장치 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0774778A2 (en) * | 1995-11-17 | 1997-05-21 | Air Products And Chemicals, Inc. | Plasma etch with trifluoroacetic acid and derivatives |
WO1998036449A1 (fr) * | 1997-02-12 | 1998-08-20 | Daikin Industries, Ltd. | Gaz d'attaque et de nettoyage |
DE19833448A1 (de) * | 1998-07-24 | 2000-02-03 | Siemens Ag | Verfahren zur Reinigung von CVD-Anlagen |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5149704A (en) * | 1974-10-28 | 1976-04-30 | Fuji Photo Film Co Ltd | Jikikirokubaitaino seiho |
US4393092A (en) * | 1982-03-12 | 1983-07-12 | Motorola, Inc. | Method for controlling the conductivity of polyimide films and improved devices utilizing the method |
JPS59218789A (ja) * | 1983-05-06 | 1984-12-10 | 信越化学工業株式会社 | フレキシブルプリント配線基板およびその製造方法 |
KR900014625A (ko) * | 1989-03-20 | 1990-10-24 | 미다 가쓰시게 | 금속/유기 고분자 합성수지 복합체 및 이의 제조방법 |
JP3297974B2 (ja) * | 1995-07-26 | 2002-07-02 | ソニー株式会社 | ペロブスカイト型酸化物薄膜のプラズマエッチング方法および半導体装置の製造方法 |
JP3689524B2 (ja) * | 1996-03-22 | 2005-08-31 | キヤノン株式会社 | 酸化アルミニウム膜及びその形成方法 |
JPH10335318A (ja) * | 1997-05-29 | 1998-12-18 | Toshiba Corp | 半導体製造装置のクリーニング方法 |
JP3039493B2 (ja) * | 1997-11-28 | 2000-05-08 | 日本電気株式会社 | 基板の洗浄方法及び洗浄溶液 |
-
2001
- 2001-03-14 JP JP2001072711A patent/JP4754080B2/ja not_active Expired - Fee Related
-
2002
- 2002-03-05 CN CNB028054709A patent/CN1322558C/zh not_active Expired - Fee Related
- 2002-03-05 US US10/471,579 patent/US6893964B2/en not_active Expired - Fee Related
- 2002-03-05 WO PCT/JP2002/002008 patent/WO2002073675A1/ja active Application Filing
- 2002-03-05 KR KR1020037011870A patent/KR100570250B1/ko not_active IP Right Cessation
- 2002-03-07 TW TW091104273A patent/TW588402B/zh not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0774778A2 (en) * | 1995-11-17 | 1997-05-21 | Air Products And Chemicals, Inc. | Plasma etch with trifluoroacetic acid and derivatives |
WO1998036449A1 (fr) * | 1997-02-12 | 1998-08-20 | Daikin Industries, Ltd. | Gaz d'attaque et de nettoyage |
DE19833448A1 (de) * | 1998-07-24 | 2000-02-03 | Siemens Ag | Verfahren zur Reinigung von CVD-Anlagen |
Also Published As
Publication number | Publication date |
---|---|
US20040115951A1 (en) | 2004-06-17 |
CN1322558C (zh) | 2007-06-20 |
KR20030083730A (ko) | 2003-10-30 |
JP4754080B2 (ja) | 2011-08-24 |
JP2002270597A (ja) | 2002-09-20 |
TW588402B (en) | 2004-05-21 |
KR100570250B1 (ko) | 2006-04-12 |
US6893964B2 (en) | 2005-05-17 |
CN1620717A (zh) | 2005-05-25 |
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