WO2005025735A1 - 真空処理装置および蒸着装置 - Google Patents
真空処理装置および蒸着装置 Download PDFInfo
- Publication number
- WO2005025735A1 WO2005025735A1 PCT/JP2004/012239 JP2004012239W WO2005025735A1 WO 2005025735 A1 WO2005025735 A1 WO 2005025735A1 JP 2004012239 W JP2004012239 W JP 2004012239W WO 2005025735 A1 WO2005025735 A1 WO 2005025735A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vapor deposition
- processing apparatus
- vacuum processing
- gasket
- organic
- Prior art date
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Classifications
-
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/56—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
- C23C14/564—Means for minimising impurities in the coating chamber such as dust, moisture, residual gases
Definitions
- the present invention relates to a reduced pressure processing apparatus, a vapor deposition apparatus, and the like, and more particularly, to a reduced pressure processing apparatus and a vapor deposition apparatus that reduce contamination of organic substances and the like.
- apparatuses that perform processing at a pressure lower than the atmospheric pressure such as a reduced pressure processing apparatus and a steaming apparatus, are collectively referred to as a vacuum processing apparatus in this specification.
- the vapor deposition apparatus is usually configured by connecting a decompression pump to a decompression container made of stainless steel or aluminum which can be decompressed.
- the above-described depressurized container is provided with a substrate holder on which a substrate on which a film is to be formed is installed, and a workpiece introduction door which opens and closes when the substrate is installed.
- the depressurizing pump is a pump for the molecular flow region (hereinafter referred to as a primary pump) such as an evening molecular pump that can achieve a high degree of vacuum, and is connected to the exhaust side of the primary pump. It is common to use dry pumps and oil rotary pumps (hereinafter referred to as secondary pumps) in combination with the primary pumps.
- Airtightness between the object introduction door and the decompression container is generally maintained by interposing a rubber o-ring or the like between the door and the container outer wall.
- rubber O-rings fluoro rubber O-rings such as DuPont's Viton series are generally used. Attention is paid to the typical characteristics.
- the evaporation source container is not particularly limited, but materials such as quartz, graphite, glass, BN, and alumina are used from the viewpoint of heat resistance.
- Patent Document 1 Japanese Patent Application Laid-Open Nos. 2000-160360
- Patent Document 2 Japanese Patent Application Laid-Open No. 5-44021
- Patent Document 3 Japanese Patent Application Laid-Open There is one described in Patent Document 1 (Publication 3).
- Patent Document 1 discloses a deposition source container (k cell) used for heating or evaporating or sublimating a chemical substance in a vacuum in a chemical substance deposition operation. It realizes visualization of materials.
- Patent Document 2 discloses the structure of an evaporation source container (k cell) in vacuum evaporation, and in particular, makes it possible to uniform the temperature of an object to be deposited in the k cell.
- Patent Document 3 discloses a decompression processing apparatus that reduces impurities remaining inside the decompression processing apparatus by back diffusion from a pump exhaust side.
- FIG. 1 shows a decompression processing apparatus and a measurement system for measuring the amount of organic substances in the decompression processing apparatus.
- the decompression processing apparatus includes a decompression vessel 1, a primary pump 2 connected to the decompression vessel 1, And a secondary pump 3 connected to the exhaust side of the primary pump 2.
- the decompression vessel 1 is equipped with an atmospheric pressure ionization mass spectrometer (API-MS) 4 for measuring the amount of organic substances. These members are connected via gaskets 5, 6, and 7, so that the connection is kept airtight.
- API-MS atmospheric pressure ionization mass spectrometer
- a turbo-molecular pump is used as the primary pump 2
- a dry pump generally used in a semiconductor manufacturing process is used as the secondary pump 3
- the exhaust side of the primary pump 2 is obtained by the method described in Patent Document 3.
- Figure 2 shows the measurement results when gaskets 5, 6, and 7 were made of a DuPont fluororubber ring (Viton), which is commonly used in the semiconductor manufacturing process.
- Figure 2 shows the quality of gas components in the decompression vessel 1 measured by API-1 MS4. This is the result of mass spectrometry.
- the horizontal axis shows the mass number, and the vertical axis shows the relative ionic strength (that is, the number of detected molecules).
- a peak is observed between the molecular weights of 40 and 240, indicating that low-molecular-weight organic substances have been released.
- the inner surface of the evaporation source container has catalytic properties, has fine pores (poroids), and has a rough surface, the evaporation material is easily decomposed, and decomposed substances are formed in the evaporation film.
- the present inventors have also recognized that there is a problem that the characteristics of the element are degraded by being taken in.
- Patent Document 1 proposes to visualize the state inside the crucible by ensuring transparency of the evaporation crucible, but does not consider the quality of the evaporation material in the evaporation crucible. Further, there is no description of the configuration of the vapor deposition apparatus in terms of contamination in the decompression vessel due to the gas released from the gasket, and this technique cannot perform high-quality vapor deposition.
- Patent Document 2 by disposing a heat insulating material outside the crucible, the temperature of the vapor deposition material in the crucible is made uniform, and the quality of the vapor deposition film is ensured.
- the catalytic property between the crucible surface and the vapor deposition material there is no mention of the configuration of the vapor deposition apparatus, and there is no description in terms of contamination in the decompression vessel due to gas released from the gasket. Can not do.
- Patent Document 3 describes a configuration of an exhaust pump of a decompression processing device, but does not mention a problem of gas released from a gasket in the device. For this reason, when processing is performed under a high degree of reduced pressure such as in a vapor deposition apparatus, the problem that the gas released from the gasket is taken into the deposited film cannot be solved. Disclosure of the invention
- the present invention has been made in view of the above problems, and is characterized in that a gasket that emits a small amount of organic substances is used in a reduced-pressure treatment apparatus or a vapor deposition apparatus.
- a gasket that emits a small amount of organic substances is used in a reduced-pressure treatment apparatus or a vapor deposition apparatus.
- metal or ceramic gaskets are used for parts that are not frequently attached and detached, and gaskets containing organic substances are used for parts that are frequently attached and detached.
- gaskets containing organic substances gaskets that have undergone a step of contacting with water at a temperature of 80 ° C or higher, preferably boiling water (both are preferably pure water, particularly ultrapure water) or whose main component is a special fluororubber or perfluoroelastomer It is characterized by using a single gasket.
- the vapor deposition source container is made of a material having low catalytic property, or the vapor deposition source vessel is made of a material having high thermal conductivity so that the inner surface of the source vessel is made of catalytic material. Characterized by a low material. Further, the inner surface of the evaporation source container of the present invention is characterized in that it is substantially smooth.
- the vapor deposition device of the present invention is characterized in that the vapor deposition material is an organic EL material. Further, the vacuum processing apparatus and the vapor deposition apparatus according to the present invention are characterized in that the degree of vacuum during the processing is 100 T or less.
- the organic EL device of the present invention is characterized by having an organic film formed by a vapor deposition device having the above-mentioned characteristics.
- an organic EL display device of the present invention is characterized by having an organic film formed by a vapor deposition device having the above-described characteristics.
- the present invention since a material that emits a small amount of organic substances is used as a gasket material, the organic substances released from the gasket contaminate the inside of the depressurized container or are taken into the vapor deposition film to form a vapor deposition film. The problem of deteriorating the quality of products can be suppressed.
- the present invention is used for vapor deposition of the organic EL layer, the amount of organic substances emitted into the organic EL layer is reduced, so that the luminance of the organic EL element can be improved and the emission life can be improved.
- FIG. 1 is a schematic configuration diagram showing a normally used decompression processing apparatus.
- FIG. 2 is a diagram showing a measurement result when a conventional gasket is used.
- Figure 3 shows the measurement results of the released gas when the gasket according to the present invention was used. It is a graph which shows a result.
- FIG. 4 is a graph showing the measurement results of the amount of the adsorbed organic substance adsorbed on the substrate when various gaskets are used.
- FIG. 5 is a cross-sectional view showing an example of the structure of the evaporation source container used in the evaporation apparatus of the present invention.
- FIG. 6 is a diagram illustrating a schematic configuration of the vapor deposition apparatus according to the first embodiment of the present invention.
- FIG. 5 is a diagram showing a schematic configuration of a vapor deposition apparatus according to Embodiment 2 of the present invention.
- a material which emits a small amount of organic matter means a metal having a very small organic matter content and / or at least one of ceramics and an organic material which emits a small amount of organic matter. More specifically, material having less organic matter released by the material when forming the gasket of Table area 1 cm 2, 1. Of the flow rate of 2 fl / min at atmospheric pressure A r to 1 0 0 ° C After the temperature rise, there is a state where the relative ionic strength measured by API-MS is not more than 0.1% when the molecular weight is 100 or more, and more preferably a state where no more than 0.1% is present. have.
- Examples of such an organic material include an organic material that has undergone a step of contacting with water at 80 ° C. or higher, preferably boiling water (both pure water, and particularly preferably ultrapure water), and a perfluoroelastomer. And the like are preferably exemplified, but the material is not limited thereto as long as the material emits little organic substance.
- water at 80 ° C or higher preferably boiling water (both pure water, particularly preferably ultrapure water) and washing, unnecessary organic substances contained in the gasket are eluted and the amount of organic substances released Was confirmed to be able to be reduced.
- a material having a small content of additives and decomposition products, such as perfluoroelastomer may be used.
- FIG. 3 shows the measurement of the gas released from the perfluoroelastomer. It can be seen that the amount of the released organic substances having a molecular weight of 100 or more is extremely small.
- the material of the gasket is selected according to the frequency of attachment / detachment of the gasket used in the vacuum processing apparatus such as the reduced pressure processing apparatus and the vapor deposition apparatus.
- the part with a low frequency of attachment / detachment is defined as one week or more, and preferably one month or Above, more preferably a part that is not attached or detached for more than one year, and a part that is frequently attached or detached is other parts.
- the processing object introduction door that opens and closes when the processing object is taken out of the equipment in less than one week is a part that is frequently attached and detached.
- a metal gasket or a ceramic gasket which emits less organic matter, in a portion where the frequency of attachment and detachment is low.
- FIG. Figure 4 shows the results of measuring the total amount of organic components released from the organic gasket on the 6-inch glass substrate by gas chromatography-mass spectrometry with a 6-inch glass substrate placed in a vacuum processing apparatus with an organic gasket. Is shown.
- Curve 8 shows the case where a gasket made of perfluoroelastomer was used
- curve 9 shows the case where a commonly used fluororubber gasket was washed with 80 pure water.
- the curve 10 shows a case where a commonly used fluororubber gasket is used after being washed with pure water at room temperature.
- the present invention is suitable for a decompression treatment apparatus and a vapor deposition apparatus that perform treatment at a pressure of 10 OT orr or less. It turns out that it is.
- the vacuum processing apparatus in particular, in the vapor deposition apparatus, not only the gasket material is selected according to the frequency of attachment / detachment, but also the material of the container filled with the vapor deposition material is selected, so that the vapor deposition formed The quality of the film can be further improved.
- FIG. 5 there is shown an evaporation source container used in the evaporation apparatus according to the present invention.
- a cross section of the evaporation source container 50 used in the evaporation apparatus according to the present invention is shown.
- the material constituting the evaporation source container 50 shown in the figure is a material having low catalytic properties with respect to the evaporation material to be filled, and specifically, Si, Cr, A and La, Y, Ta, ⁇ i Oxides or nitrides of elements selected from are chemically stable and suitable.
- Si, Cr, A and La, Y, Ta, ⁇ i Oxides or nitrides of elements selected from are chemically stable and suitable.
- a l 2 ⁇ 3, C r 2 ⁇ 3, A 1 N, Y 2 0 3, L a 2 ⁇ 3 and M G_ ⁇ is preferred.
- it is only necessary that the catalytic property at the site where the vapor deposition material comes into contact is low.
- a material may be formed.
- A1 or the like may be formed by a plasma spraying method or a sputtering method, and then oxidation or nitridation may be performed.
- a vapor deposition container is formed of a material with high thermal conductivity, heat from a heater provided outside the container can be efficiently transmitted to the vapor deposition material, so that uniformity of the deposited film can be maintained and energy efficiency can be improved. Good.
- the structure of the evaporation source container used in the evaporation apparatus of the present invention is not limited to the above-described cylindrical shape with a bottom, and it is sufficient that the evaporation material can be loaded and heated. Examples of such a shape include a boat shape and a dish shape.
- the inner surface of the evaporation source container 50 used in the evaporation apparatus of the present invention is preferably a substantially smooth surface.
- substantially smooth surface refers to a surface that looks smooth to the deposition material, and preferably has a center line average roughness of 100 nm or less, more preferably 10 nm or less. , 1 nm or less is more preferable. By doing so, the effective surface area where the vapor deposition material molecules come into contact with the vapor deposition source container is reduced, so that the decomposition of the vapor deposition material at the interface between the vapor deposition source container and the vapor deposition material can be suppressed.
- the vapor deposition apparatus of this invention since a material with low catalytic property is used for the vapor deposition source container or the inner surface of the container, the decomposition of the vapor deposition material, particularly the organic material such as the organic EL material, can be suppressed, and the organic EL device Alternatively, the amount of impurities contained in the organic film of the display device can be reduced, so that the light emission luminance and light emission life of the element can be improved. Further, according to the vapor deposition apparatus of the present invention, since the inner surface of the vapor deposition source container is a substantially flat surface, the surface area where the vapor deposition material contacts the vapor deposition source container can be reduced. As a result, the amount of decomposition of the evaporation material can be reduced, and the amount of impurities contained in the organic film of the organic EL element or the display device can be reduced. The service life can be improved.
- FIG. 6 is a cross-sectional view showing an example of the decompression processing device of the first embodiment.
- Object introduction door 14 that opens and closes during the process, the object introduction door 14, the decompression vessel 11, and the intermediary between the decompression vessel 11 and the primary pump 12 maintain the confidentiality of each connection part A first gasket 15 and a second gasket 16.
- the opening / closing frequency of the treatment object introduction door 14, that is, the attachment / detachment frequency is significantly higher than the attachment / detachment frequency of the primary pump 12.
- the primary pump 12 was an evening molecular pump, and the secondary pump 13 was a screw dry pump.
- the gas introduction mechanism 17 is configured to suppress back diffusion of impurities from the screw dry pump 13 through Ar of 100 sccm.
- the second gasket 16 used a gasket made of Cu
- the first gasket 15 used a gasket made of Perfluoroelastomer.
- the first gasket 15 of the processing object introduction door section 14 that is frequently attached and detached is made of a perfluoroelastomer that emits little organic matter, the amount of impurities in the decompression vessel 11 can be suppressed, Impurity adsorption to the substrate to be processed (not shown) was suppressed.
- FIG. 7 is a cross-sectional view illustrating an example of the vapor deposition apparatus according to the second embodiment.
- the processing chamber 21 for performing the vapor deposition processing is partitioned from the processing chamber 21, and the gate for maintaining the airtightness of the processing chamber 21.
- a substrate introduction chamber 3 1 connected to the processing chamber 21 via the valve 24 to carry out the substrate 25, a substrate introduction door 3 4 connected to the substrate introduction chamber 31, and a substrate in the processing chamber 21.
- Substrate holder 26 holding 2 5 and primary pumps 2 2 and 3 connected to processing chamber 21 and substrate introduction chamber 3 1 via pump gate valves 28 and 38, respectively.
- the gaskets 52 and 56 existing between the substrate introduction door 34 and the substrate introduction chamber 31 and between the vapor deposition source chamber 41 and the shirt set-up mechanism 44 are perfluoroelastomer.
- the other gaskets 53, 54, 55, 57, 58, 59, and 60 were made of Cu.
- the gasket containing an organic substance can be minimized, and the gasket containing an organic substance also uses a material that emits a very small amount of organic substance, so that a film is formed on the substrate 25. It is possible to prevent impurities released from the gasket from being taken into the organic thin film.
- the vapor deposition source container 4 2 and A 1 2 0 3 made, due to a substantially flat condition the inner surface by grinding processing, catalytic scarcely suppress thermal decomposition of the vapor deposition source container 4 2 inside the vapor deposition material I was able to do it.
- the decompression processing apparatus and the vapor deposition apparatus of the present invention since a material that emits little organic substance is used as the gasket material, the organic substances released from the gasket contaminate the inside of the decompression processing apparatus. The problem that the quality of the object to be processed is deteriorated due to being taken into the deposited film can be suppressed. If the present invention is used for vapor deposition of the organic EL layer, the amount of organic substances emitted into the organic EL layer is reduced, so that the luminance of the organic EL element and the emission life of the organic EL element can be improved.
- the vapor deposition apparatus of the present invention since a material having low catalytic property is used for the vapor deposition source container or the inner surface of the container, the decomposition of the vapor deposition material, particularly the organic material such as the organic EL material, can be suppressed, and the organic EL device Alternatively, since the amount of impurities contained in the organic film of the display device can be reduced, the light emission luminance and light emission life of the element can be improved. Further, according to the vapor deposition apparatus of the present invention, since the inner surface of the vapor deposition source container is a substantially flat surface, the surface area where the vapor deposition material and the vapor deposition source container are in contact can be reduced, thereby decomposing the vapor deposition material. Since the amount can be reduced, the amount of impurities contained in the organic film of the organic EL element or the display device can be reduced, so that the light emission luminance and light emission life of the element can be improved. Industrial applicability
- the vapor deposition apparatus according to the present invention has a configuration capable of reducing the generation of organic substances inside the apparatus, and is therefore suitable for manufacturing a display device that needs to prevent contamination by organic substances, particularly, an organic EL element.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physical Vapour Deposition (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/568,706 US20060278162A1 (en) | 2003-08-20 | 2004-08-19 | Vacuum treatment apparatus and vapor deposition apparatus |
US12/715,222 US20100166956A1 (en) | 2003-08-20 | 2010-03-01 | Vapor deposition apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003296439A JP5107500B2 (ja) | 2003-08-20 | 2003-08-20 | 蒸着装置 |
JP2003-296439 | 2003-08-20 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/715,222 Division US20100166956A1 (en) | 2003-08-20 | 2010-03-01 | Vapor deposition apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005025735A1 true WO2005025735A1 (ja) | 2005-03-24 |
Family
ID=34308374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/012239 WO2005025735A1 (ja) | 2003-08-20 | 2004-08-19 | 真空処理装置および蒸着装置 |
Country Status (4)
Country | Link |
---|---|
US (2) | US20060278162A1 (ja) |
JP (1) | JP5107500B2 (ja) |
TW (1) | TW200517513A (ja) |
WO (1) | WO2005025735A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105214561A (zh) * | 2015-10-30 | 2016-01-06 | 安徽神剑新材料股份有限公司 | 一种负压反应容器的投料方法 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100830388B1 (ko) | 2004-03-29 | 2008-05-20 | 도쿄엘렉트론가부시키가이샤 | 막 형성 장치 및 막 형성 방법 |
US9017481B1 (en) * | 2011-10-28 | 2015-04-28 | Asm America, Inc. | Process feed management for semiconductor substrate processing |
US9365921B2 (en) * | 2013-06-28 | 2016-06-14 | Semiconductor Energy Laboratory Co., Ltd. | Method for fabricating light-emitting element using chamber with mass spectrometer |
WO2016182648A1 (en) * | 2015-05-08 | 2016-11-17 | Applied Materials, Inc. | Method for controlling a processing system |
JP7108364B2 (ja) * | 2018-09-04 | 2022-07-28 | キヤノン電子管デバイス株式会社 | 放射線検出器、放射線検出器の製造方法および装置、並びにシンチレータパネル、シンチレータパネルの製造方法および装置 |
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-
2004
- 2004-08-19 WO PCT/JP2004/012239 patent/WO2005025735A1/ja active Application Filing
- 2004-08-19 US US10/568,706 patent/US20060278162A1/en not_active Abandoned
- 2004-08-20 TW TW093125119A patent/TW200517513A/zh unknown
-
2010
- 2010-03-01 US US12/715,222 patent/US20100166956A1/en not_active Abandoned
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JPH06107803A (ja) * | 1992-09-25 | 1994-04-19 | Nippon Valqua Ind Ltd | 真空用フッ素ゴム並びにその製造方法 |
JPH08321448A (ja) * | 1995-05-25 | 1996-12-03 | Tadahiro Omi | 真空排気装置、半導体製造装置及び真空処理方法 |
JPH09189290A (ja) * | 1995-12-29 | 1997-07-22 | Kokusai Electric Co Ltd | 真空処理装置 |
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CN105214561A (zh) * | 2015-10-30 | 2016-01-06 | 安徽神剑新材料股份有限公司 | 一种负压反应容器的投料方法 |
Also Published As
Publication number | Publication date |
---|---|
TW200517513A (en) | 2005-06-01 |
US20100166956A1 (en) | 2010-07-01 |
JP5107500B2 (ja) | 2012-12-26 |
JP2005058978A (ja) | 2005-03-10 |
US20060278162A1 (en) | 2006-12-14 |
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