WO2005004219A1 - 減圧処理装置及び減圧処理方法並びに圧力調整バルブ - Google Patents
減圧処理装置及び減圧処理方法並びに圧力調整バルブ Download PDFInfo
- Publication number
- WO2005004219A1 WO2005004219A1 PCT/JP2004/009440 JP2004009440W WO2005004219A1 WO 2005004219 A1 WO2005004219 A1 WO 2005004219A1 JP 2004009440 W JP2004009440 W JP 2004009440W WO 2005004219 A1 WO2005004219 A1 WO 2005004219A1
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- WO
- WIPO (PCT)
- Prior art keywords
- valve
- purge gas
- gas supply
- valve seat
- reaction vessel
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000011946 reduction process Methods 0.000 title abstract 3
- 238000010926 purge Methods 0.000 claims abstract description 92
- 238000006243 chemical reaction Methods 0.000 claims abstract description 79
- 230000006837 decompression Effects 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 12
- 239000007795 chemical reaction product Substances 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 154
- 239000010408 film Substances 0.000 description 27
- 235000012431 wafers Nutrition 0.000 description 15
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 239000006227 byproduct Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 7
- 229910052581 Si3N4 Inorganic materials 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 7
- 229910001873 dinitrogen Inorganic materials 0.000 description 6
- 229910052814 silicon oxide Inorganic materials 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- LVRLSYPNFFBYCZ-VGWMRTNUSA-N omapatrilat Chemical compound C([C@H](S)C(=O)N[C@H]1CCS[C@H]2CCC[C@H](N2C1=O)C(=O)O)C1=CC=CC=C1 LVRLSYPNFFBYCZ-VGWMRTNUSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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
- 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
- C23C16/4412—Details relating to the exhausts, e.g. pumps, filters, scrubbers, particle traps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/02—Arrangements using fluid issuing from valve members or seats
-
- 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
- C23C16/4408—Means for minimising impurities, e.g. dust, moisture or residual gas, in the reaction chamber by purging residual gases from the reaction chamber or gas lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
- F16K51/02—Other details not peculiar to particular types of valves or cut-off apparatus specially adapted for high-vacuum installations
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
- Y10T137/0402—Cleaning, repairing, or assembling
- Y10T137/0419—Fluid cleaning or flushing
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
- Y10T137/4245—Cleaning or steam sterilizing
- Y10T137/4259—With separate material addition
Definitions
- Decompression processing apparatus decompression processing method, and pressure regulating valve
- the present invention relates to a decompression processing apparatus and method for performing a process under reduced pressure on a substrate such as a semiconductor wafer (hereinafter, referred to as a wafer) and a pressure adjustment valve.
- a substrate such as a semiconductor wafer (hereinafter, referred to as a wafer) and a pressure adjustment valve.
- a processing gas is supplied into a reaction vessel to perform processing on a substrate under reduced pressure.
- a thin film is formed on a substrate by a reaction of a film forming gas.
- CVD chemical vapor d mark osition
- a trap is provided in the exhaust pipe to collect these products upstream of the valve.
- certain types of reaction products and reaction by-products can be prevented from adhering to them by heating the gate valve and the exhaust pipe.
- a silicon oxide film (SiO 2) is formed using TEOS (tetraethyl orthosilicate: Si ( ⁇ C H)).
- CMOS Complementary Metal Oxide Semiconductor
- SiN silicon nitride
- a silicon oxide film is formed using TEOS in a low-pressure CVD apparatus, and then dichlorosilane (SiH C1) gas is used in the same low-pressure CVD apparatus.
- the process pressure of the silicon nitride film is a low pressure of 133 Pa (lTorr) or less, if a trap is provided in the exhaust path, the pressure cannot be reduced to the target process pressure in the reaction vessel. I can't do that.
- a trap is set up while In this case, unreacted TEOS decomposition products, which are discharged from the reaction vessel when the silicon oxide film is formed, tend to adhere to the valve in the exhaust passage. If this valve is a gate vanoleb with a pressure adjustment function, when the opening of the valve is small, a pressure rise inevitably occurs between the valve body and the valve seat. Decomposition products are likely to adhere and solidify.
- FIG. 6 is a diagram showing a state in which solid matter derived from TEOS has adhered to the vicinity of the o-ring 90 in the valve 9 and the vicinity of the valve seat 92 on which the valve element 91 is seated. If such solid matter adheres to the valve 9, the valve element 91 cannot contact the valve seat 92 airtightly when the valve 9 is closed. If this happens, it will be difficult to perform a leak check of the reaction vessel before the process, for example. For this reason, maintenance (particularly, tallying) of the valve 9 must be performed frequently, and there is a problem that the burden on the operator is large.
- JP11-195649A discloses that immediately before closing an on-off valve installed in a source gas flow path, a purge gas such as Ar gas flows into the valve from a branch path orthogonal to the source gas flow path, and a valve seat and It is described that solid matter attached to a valve body is blown off. According to this, it is possible to prevent leakage and damage to the valve seat that may occur when the valve is closed in a state where the solid matter is sandwiched between the valve seat and the valve body.
- the present invention has been made in view of such circumstances, and it is possible to prevent a leak from a valve provided in an exhaust passage when the valve is closed, and to reduce a burden of maintenance work. It is an object of the present invention to provide a decompression device, a decompression method, and a pressure regulating valve.
- the present invention includes an exhaust passage connected to the reaction vessel, and a gate vanoleb provided in the exhaust passage and closing the exhaust passage air-tightly by pressing a valve body against a valve seat. Process gas while maintaining the inside of the reaction vessel in a reduced pressure atmosphere.
- a reduced-pressure processing apparatus for supplying a predetermined process to a substrate in a reaction vessel and supplying the purge gas to the reaction vessel, at least one purge gas supply port opening in a gap between the valve body and a valve seat; And a purge gas supply path for supplying a purge gas to a port.
- reaction product as used herein means that the same product and reaction by-product as the reaction product formed on the substrate are included and shifted.
- the decompression processing device is provided in the purge gas supply path, and opens and closes the purge gas valve for supplying and stopping the purge gas when the process gas is supplied into the reaction vessel. It is preferable to provide a configuration including a control unit that controls the supply of the purge gas. In this way, since the purge gas is blown while the processing gas is flowing, the adhesion of the reaction product in the vicinity of the gap can be reliably prevented.
- the valve seat has a ring shape, and a plurality of purge gas supply ports are provided along the circumferential direction as the at least one purge gas supply port.
- the present invention provides a method for producing a reaction with a small valve opening when the gate valve adjusts the pressure in the reaction vessel by adjusting a gap between the valve body and the valve seat. This is extremely effective in preventing the reaction product from adhering under conditions where the substance easily adheres.
- the processing gas power used in the decompression process is such that even if the inside of the exhaust passage is heated, the reaction products of the processing gas are unavoidable to adhere to the inner wall.For example, the processing gas vaporizes an organic source. In this case, the present invention is particularly effective.
- the gate valve that constitutes the decompression processing apparatus is useful alone as a pressure regulating valve.
- the present invention further provides a decompression system comprising: an exhaust passage connected to the reaction vessel; and a gate valve provided in the exhaust passage and closing the exhaust passage air-tightly by pressing a valve body against a valve seat.
- a method for performing decompression treatment using a treatment device reduces the pressure through the exhaust path.
- the step of supplying the purge gas to the gap includes supplying the purge gas from the first purge gas supply port along the surface of the valve body that comes into contact with the valve seat, and supplying the purge gas from the second purge gas supply port. This is the step of supplying purge gas along the surface of the valve seat that comes into contact with the valve element.
- FIG. 1 is a partial cross-sectional view schematically showing a configuration of a low pressure CVD apparatus according to one embodiment of the present invention.
- FIG. 2 is a longitudinal sectional view showing the gate vanoleb according to the first embodiment of the present invention.
- FIG. 3 is a longitudinal sectional view showing a closed state of the gate valve shown in FIG. 2.
- FIG. 4 is a longitudinal sectional view showing a gate valve according to a second embodiment of the present invention.
- FIG. 5 is a sectional view showing details of a main part of a gate valve according to a third embodiment of the present invention.
- FIG. 6 is a longitudinal sectional view showing a state in which a reaction product has adhered to a conventional gate valve.
- FIG. 1 denotes a reaction tube having a double tube structure composed of an inner tube la and an outer tube lb made of quartz.Below the reaction tube 1 is a metal-made, for example, stainless steel cylinder. A hold 11 is provided.
- the inner tube la has an open upper end and a lower end supported by a support member provided on the inner peripheral surface of the manifold 11.
- the outer tube lb has an upper end closed and a lower end hermetically joined to the upper end of the manifold 11.
- the reaction vessel is formed by the reaction tube 1 and the manifold 11. It is configured.
- FIG. 1 shows a state where a film formation process is being performed on the wafer W loaded into the reaction tube 1, ie, the substrate to be processed.
- a quartz wafer boat 12 that is, a substrate holder, in a shelf-like manner at an interval vertically above and below each other in a horizontal state.
- the wafer boat 12 is held above the lid 13, and a quartz thermal insulation unit 14 is installed between the wafer boat 12 and the lid 13.
- the heat retaining unit 14 has a heat insulating structure composed of a plurality of quartz fins.
- a rotating shaft 15 penetrates the center of the heat retaining unit 14, and the rotating shaft 15 is rotated by a driving unit 17 provided in a boat elevator 16, thereby rotating the wafer boat 12.
- the lid 13 is mounted on a boat elevator 16 for loading and unloading the wafer boat 12 into and from the reaction tube 1, and closes a lower end opening of the manifold 11 when the lid 13 is at the upper limit position.
- a heater 2 which is a resistance heating element, surrounding the reaction tube 1, that is, a heating means is provided.
- a furnace body (not shown) is provided.
- a 14th film-forming gas supply tube 20-24 for supplying a film-forming gas, that is, a processing gas, into the inner tube la is provided.
- the first deposition gas supply pipe 20 is for supplying TEOS, and has a vaporizer 20a for vaporizing TEOS as a liquid source.
- the second film-forming gas supply pipe 21 is for supplying oxygen (0) gas.
- the third film-forming gas supply pipe 22 and the fourth film-forming gas supply pipe 23 are for supplying dichlorosilane (SiH C1) gas and ammonia (NH 2) gas, respectively.
- the supply pipes 20 to 23 are connected to respective gas supply sources (not shown).
- Symbols V0-V3 indicate valves for supplying and stopping gas supply, and symbols 23-26 indicate a mass flow controller for adjusting the gas flow rate.
- the manifold 11 is connected to a metal, for example, stainless steel exhaust pipe 3 forming an exhaust path for exhausting the atmosphere in the reaction vessel from between the inner pipe la and the outer pipe lb.
- the exhaust pipe 3 is connected to a vacuum pump 31 as a vacuum exhaust means.
- the exhaust pipe 3 is provided with a heater 32 as a heating means for heating the exhaust pipe 3.
- heater 32 comprises a tape heater wound on exhaust pipe 3.
- the exhaust pipe 3 is provided with a gate valve 4 having a pressure adjustment function, and can open and close the gate vanoleb 4. Thereby, the inside of the outer tube lb and the vacuum pump 31 can be connected and disconnected. Further, the pressure in the reaction vessel can be controlled by adjusting the opening of the gate vanoleb 4.
- Reference numeral 100 denotes a control unit that controls the entire low-pressure CVD apparatus.
- the control unit 100 can also control the introduction of a purge gas, which will be described later, by controlling the opening and closing of the valve (purge gas valve) 60.
- the gate valve 4 mainly includes a substantially cylindrical main body (valve casing) 40 and a substantially cylindrical valve body 41 housed in the main body 40.
- a substantially cylindrical main body (valve casing) 40 By moving the valve body 41 in the axial direction (vertical direction in the figure) with respect to the main body 40, the flow of gas flowing into the gate vanoleb 4 from the reaction vessel side is controlled, thereby adjusting the pressure in the reaction vessel. can do.
- a hollow cylindrical cover body 4a is mounted on the main body 40, and a gas cylinder 4b is housed inside the cover body 4a.
- a shaft 4d is provided at a lower portion of the gas cylinder 4b. An upper portion of the shaft 4d is inserted into the gas cylinder 4b, and a lower portion of the shaft 4d is fixed to the valve body 41 inside the valve body 41. By operating the gas cylinder 4b, the shaft 4d moves up and down, and a force can be applied to move the valve element 41 upward and downward.
- a gas port 4c for injecting nitrogen gas as a purge gas from the outside of the gate valve 4 is provided below the gate vanoleb 4. Nitrogen gas, which is an inert gas injected from the gas port 4c, is supplied into the valve body 41.
- FIG. 2 shows a state in which the valve element 41 is raised, that is, a state in which the gate valve 4 is open
- FIG. 3 shows a state in which the valve element 41 is lowered and the gate valve 4 is closed.
- FIG. 2 and FIG. 3 show partial cross-sectional views of the gate valve 4 according to the first embodiment.
- a valve seat 42 is formed in the main body 40 so as to be in contact with the lower surface of the peripheral portion of the valve body 41.
- the main body 40 is provided with a gas supply passage 43a for supplying a purge gas, for example, a nitrogen gas.
- the main body 40 is provided with an annular member having a vertical wall 44 rising from the peripheral portion of the valve seat 42 so as to surround the valve body 41, and an annular ventilation chamber 45a is provided inside the annular member. I have.
- the gas supply path 43c is connected to the ventilation chamber 45a.
- a plurality of injection ports 46 that is, first purge gas supply ports, are formed in the wall 44 along the entire circumference at intervals in the circumferential direction. That is, the plurality of injection ports 46 are opened toward the gap between the valve seat 42 and the valve body 41, so that the purge gas always spreads over the surface of the valve seat 42 while the purge gas is being injected. It has become.
- an inflow-side exhaust passage 47 into which the exhaust gas discharged from the reaction vessel flows into is formed in a lower portion of the main body 40.
- an exhaust port 48 for discharging exhaust gas flowing from an inflow-side exhaust passage 47 below the gate valve 4 is provided in a rightward direction in the figure. It is open. As a result, the exhaust gas flows into the gate valve 4 from the inflow-side exhaust passage 47 on the lower side in the figure, and flows out from the exhaust port 48 rightward.
- a gas introduction path 49 for supplying a purge gas to the gas supply path 43a is provided upstream of the gas supply path 43a.
- a first purge gas supply path is configured by the gas introduction path 49, the gas supply path 43a, and the air chamber 45a.
- An annular concave portion 54 is formed in the valve seat 42, and an O-ring 53 having a circular cross section is accommodated in the concave portion 54 with its upper part exposed outside the concave portion 54.
- the O-ring 53 seals between the main body 40 and the valve element 41 by being in close contact with the lower surface of the peripheral portion of the valve element 41.
- the purge gas injected from the injection port 46 surely reaches the portion of the O-ring 53 exposed outside the concave portion 54.
- the valve body 41 has a valve cover 51 at a lower portion thereof, and the valve cover 51 is formed with a flange 50 having an outer diameter slightly smaller than the inner diameter of the main body 40.
- a bellows 52 is mounted on the valve cover 51 so that the valve cover 51 can move up and down.
- a shaft 4d is attached to the upper center of the valve cover 51, and when the air cylinder 4b operates, the shaft 4d moves in the vertical direction, whereby the valve cover 51 also moves up and down.
- the bellows 52 provided above expands and contracts. Further, since the end of the bellows 52 is in close contact with the valve lid 51 without any gap, the exhaust gas flowing into the gate vane lobe 4 does not flow into the bellows 52.
- the valve cover 51 is provided with a gas supply path 43b separately from the gas supply path 43a of the main body 40 described above.
- the distal end of the gas supply passage 43b is connected to an annular ventilation chamber provided inside the valve lid 51.
- the valve lid 51 is provided with a plurality of injection ports 56, that is, a second purge gas supply locator, at intervals around the entire circumference of the valve lid 51, whereby the purge gas injected from the injection ports 56 is provided.
- a gas introduction path 57 for supplying a purge gas to the gas supply path 43b is provided spirally inside the inflow-side exhaust path 47. Since the gas introduction path 57 has a spiral shape, the gas introduction path 57 can expand and contract in the vertical direction according to the vertical movement of the valve element 41.
- the gas introduction path 57 is connected to the gas port 4c, and nitrogen flows into the gas introduction path 57 from the gas port 4c.
- a second purge gas supply path is constituted by the gas introduction path 57, the gas supply path 43b, and the ventilation chamber 45b.
- the gas introduction path 49 is provided with a valve 60.
- the valve 60 is opened by the control unit 100, and the gate vane-valve is opened. Nitrogen gas, which is a purge gas, is introduced into 4.
- a predetermined number of wafers are held on the wafer boat 12 in a shelf shape. Then, by raising the boat elevator 17, the wafer boat 12 on which the wafer is placed is carried into the reaction vessel formed by the reaction tube 1 and the manifold 11, and the lower end of the manifold 11 is The opening (furnace opening) is closed by the lid 13. Next, the gate valve 4 is opened, and the inside of the reaction vessel is evacuated by the vacuum pump 5. When the pressure inside the reaction vessel reaches a predetermined pressure, for example, about 0.1 Pa, the gate vanoleb 4 is closed, and a leak check is performed by confirming whether the pressure inside the reaction vessel has risen. At this time, if a pressure increase is confirmed, it means that the inside of the reaction vessel is not a closed space. If the film is formed in this state, the atmosphere is entrained in the reaction vessel during the film formation, and a desired thin film cannot be obtained.
- a predetermined pressure for example, about 0.1 Pa
- TEOS and oxygen are respectively supplied from the first film-forming gas supply pipe 20 and the second gas supply pipe 21.
- Gas is supplied into the reaction vessel, and the reaction volume is adjusted by adjusting the opening of the gate valve 4. Adjust the chamber to, for example, lOOPa. Under such process conditions, TEOS and oxygen gas react to form a silicon oxide film on the wafer W.
- the gate valve 4 When the inside of the reaction vessel is open or when a leak check is performed, the gate valve 4 is closed, that is, as shown in FIG. 3, the valve lid 51 is pressed against the valve seat 42 and the O-ring 53 is pressed. As a result, the gap between the two is hermetically sealed. At this time, the valve 60 is closed at this time, and no purge gas is supplied into the gate valve 4.
- the gate valve 4 When performing the film forming process, the gate valve 4 is opened at a predetermined opening as shown in FIG. 2, and a purge gas (nitrogen gas in this example) is supplied into the gate valve 4. That is, the valve element 41 moves upward according to an instruction from the control unit 100, and the valve cover 51 is separated from the O-ring 53 provided on the valve seat 42 of the main body 40.
- the gas discharged from the reaction vessel flows into the gate valve 4 from the inflow-side exhaust passage 47 located at the lower side in FIG.
- the gap between the valve seat 42 and the valve cover 51 is narrow, for example, about 0.2 mm.
- the vanoleb 60 is opened, the purge gas is supplied from the above-described injection port (first purge gas supply port) 46 along the surface of the valve seat 42 (the surface that comes into contact with the valve element 41), and the injection port is opened. (Second purge gas supply port)
- the purge gas is injected from 56 along the surface of the valve body 41 that comes into contact with the valve seat 42. Since the outlet 48 on the outflow side is evacuated by the vacuum pump 31, the purge gas is injected at a high speed close to the sonic speed toward the gap between the valve cover 51 of the valve body 41 and the valve seat 42.
- nitrogen gas is supplied into the reaction vessel from a gas supply pipe (not shown) to purge the reaction vessel, and the reaction vessel is cut off by the vacuum pump 31.
- a nitride film is formed.
- the inside of the reaction vessel is heated to 500 ° C-800 ° C by heater 2.
- the second deposition gas supply pipe 22 and the third component gas are controlled by controlling the pressure in the reaction vessel to 133 Pa (lTorr or less) or less, for example, 66.5 Pa by the gate vanoleb 4.
- Dichlorosilane and ammonia are respectively supplied into the reaction vessel from the film gas supply pipe 23 to form a silicon nitride film on the wafer W.
- a reaction by-product ammonium chloride
- ammonium chloride Since the inside of the exhaust pipe 3 is heated to a temperature equal to or higher than the sublimation temperature of the ammonium chloride by the heater 32, the salted ammonium is supplied to the exhaust pipe 3. Is exhausted without adhering. Also, during the process of forming the silicon nitride film, a purge gas is similarly supplied into the gate valve 4 to prevent reaction by-products from being attached to the contact surface between the valve lid 51 and the valve seat 42. .
- N gas flowing through a gas supply pipe (not shown) is supplied into the reaction vessel to purge the reaction vessel, and then the boat elevator 17 is lowered.
- the first gas flows along the contact surface of the valve seat 42 with the valve element 41.
- the purge gas is blown out from the purge gas supply path 1 and the purge gas is blown out from the second purge gas supply path along the contact surface of the valve body 41 with the valve seat 42.
- the gap between the valve element 41 and the valve seat 42 can be reliably sealed, and there is no possibility of leakage.
- frequent maintenance especially cleaning
- the burden of maintenance work can be reduced.
- FIG. 4 shows a second embodiment of the present invention.
- the gas supply passage 57 on the valve body 41 side is provided inside the bellows 52 of the valve body 41.
- FIG. 5 shows a third embodiment of the present invention.
- a gas introduction path 49 and a gas supply path 43a are formed in the main body 40.
- An O-ring 53 is provided on the valve lid 51.
- the valve seat 42 and the valve body 41 are each provided.
- a purge gas supply path is provided.
- the purge gas supply port is provided only in one of the valve seat 42 and the valve body 41. It is preferable that the opening is provided in such a manner that the purge gas can flow along the contact surface with the seat 42.
- the application of the present invention is not limited to the reduced pressure film forming process, but can be applied to, for example, a case where etching is performed with an etching gas under reduced pressure.
- the position at which the pressure adjusting valve according to the present invention is provided is not limited to the inside of the exhaust passage as in the illustrated gate vane lobe 4 but may be the inside of a gas supply passage for supplying gas to the reaction vessel.
- the ring 53 for improving the sealing performance of the gate valve 4 is provided on the main body 40 in the first and second embodiments of the present invention, and on the valve element 41 in the third embodiment. Although it is provided in any one of the main body 40 and the valve body 41, it may be provided in any one of them.
- the purge gas may be supplied in the entire time period during which the processing gas is supplied to the reaction vessel, may be supplied in a part of the time period, or may be supplied as the processing gas. You can supply it immediately after you stop supplying it.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Vapour Deposition (AREA)
- Details Of Valves (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020057008327A KR101108379B1 (ko) | 2003-07-03 | 2004-07-02 | 감압 처리 장치 및 감압 처리 방법 및 압력 조정 밸브 |
US10/563,208 US8051870B2 (en) | 2003-07-03 | 2004-07-02 | Pressure reduction process device, pressure reduction process method, and pressure regulation valve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-191225 | 2003-07-03 | ||
JP2003191225A JP4187599B2 (ja) | 2003-07-03 | 2003-07-03 | 減圧処理装置及び減圧処理方法並びに圧力調整バルブ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005004219A1 true WO2005004219A1 (ja) | 2005-01-13 |
Family
ID=33562352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/009440 WO2005004219A1 (ja) | 2003-07-03 | 2004-07-02 | 減圧処理装置及び減圧処理方法並びに圧力調整バルブ |
Country Status (5)
Country | Link |
---|---|
US (1) | US8051870B2 (ja) |
JP (1) | JP4187599B2 (ja) |
KR (1) | KR101108379B1 (ja) |
TW (1) | TW200504875A (ja) |
WO (1) | WO2005004219A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116732495A (zh) * | 2023-07-17 | 2023-09-12 | 赛瑞达智能电子装备(无锡)有限公司 | 一种lpcvd双层炉管及其操控方法 |
CN116732495B (zh) * | 2023-07-17 | 2024-06-04 | 赛瑞达智能电子装备(无锡)有限公司 | 一种lpcvd双层炉管及其操控方法 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4517924B2 (ja) * | 2005-04-04 | 2010-08-04 | Smc株式会社 | 真空調圧バルブ |
US8122903B2 (en) | 2007-07-26 | 2012-02-28 | Parker-Hannifin Corporation | Close-coupled purgeable vaporizer valve |
DE102007050086A1 (de) * | 2007-10-19 | 2009-04-23 | Alfa Laval Kolding A/S | Verfahren zum Betrieb eines Ventils |
JP4961381B2 (ja) * | 2008-04-14 | 2012-06-27 | 株式会社日立国際電気 | 基板処理装置、基板処理方法及び半導体装置の製造方法 |
JP4924676B2 (ja) * | 2009-08-13 | 2012-04-25 | 東京エレクトロン株式会社 | ガスポート構造及び処理装置 |
US9091371B2 (en) * | 2010-12-27 | 2015-07-28 | Kenneth K L Lee | Single axis gate valve for vacuum applications |
KR101528458B1 (ko) * | 2013-01-18 | 2015-06-18 | (주) 유앤아이솔루션 | 슬라이딩 역압 차단 밸브 |
US20170162366A1 (en) * | 2015-12-08 | 2017-06-08 | Asm Ip Holding B.V. | Film forming apparatus, recording medium, and film forming method |
KR101828427B1 (ko) * | 2017-11-22 | 2018-03-29 | 주식회사 보야 | 파우더 프로텍팅 3웨이 밸브 |
CN111334774A (zh) * | 2018-12-18 | 2020-06-26 | 夏泰鑫半导体(青岛)有限公司 | 气体反应装置 |
JP2023108407A (ja) | 2022-01-25 | 2023-08-04 | 東京エレクトロン株式会社 | 圧力調整弁、および半導体製造装置 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56105183A (en) * | 1980-01-23 | 1981-08-21 | Kubota Ltd | Valve for metal vapor-contained high temperature gas |
JPH08285132A (ja) * | 1995-04-11 | 1996-11-01 | Ckd Corp | ヒーティング機能付真空弁 |
JPH08285133A (ja) * | 1995-04-17 | 1996-11-01 | Nec Kansai Ltd | 真空プロセス装置用ゲートバルブ |
JPH0989139A (ja) * | 1995-09-25 | 1997-03-31 | Ckd Corp | 真空用開閉弁 |
JPH11195649A (ja) * | 1998-01-05 | 1999-07-21 | Ebara Corp | 弁装置 |
JPH11214317A (ja) * | 1998-01-27 | 1999-08-06 | Kokusai Electric Co Ltd | 基板処理装置および基板処理方法 |
JPH11325313A (ja) * | 1996-01-31 | 1999-11-26 | Benkan Corp | 半導体製造装置用無摺動ゲートバルブ |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2254472A (en) * | 1939-04-28 | 1941-09-02 | Mason Neilan Regulator Company | Combination control and quench valve |
US3133554A (en) * | 1961-12-08 | 1964-05-19 | Ladish Co | Valve having a seat cleaning feature |
US4174728A (en) * | 1977-11-14 | 1979-11-20 | The United States Of America As Represented By The United States Department Of Energy | Sliding-gate valve |
US4383546A (en) * | 1980-12-01 | 1983-05-17 | Ecolaire Incorporated | High temperature, high pressure valve |
US4554942A (en) * | 1983-09-06 | 1985-11-26 | Advanced Micro Devices, Inc. | Process gas controller |
EP0780615B1 (en) * | 1995-12-21 | 1999-08-18 | Benkan Corporation | Vacuum exhaust valve |
US5755255A (en) | 1996-10-29 | 1998-05-26 | Benkan Corporation | Gate valve for regulating gas flow in semiconductor manufacturing |
TW471031B (en) | 1997-01-08 | 2002-01-01 | Ebara Corp | Vapor feed supply system |
JPH1183309A (ja) | 1997-09-04 | 1999-03-26 | Nippon Air Rikiide Kk | アルゴン精製方法及び装置 |
-
2003
- 2003-07-03 JP JP2003191225A patent/JP4187599B2/ja not_active Expired - Fee Related
-
2004
- 2004-06-30 TW TW093119647A patent/TW200504875A/zh not_active IP Right Cessation
- 2004-07-02 KR KR1020057008327A patent/KR101108379B1/ko not_active IP Right Cessation
- 2004-07-02 WO PCT/JP2004/009440 patent/WO2005004219A1/ja active Application Filing
- 2004-07-02 US US10/563,208 patent/US8051870B2/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56105183A (en) * | 1980-01-23 | 1981-08-21 | Kubota Ltd | Valve for metal vapor-contained high temperature gas |
JPH08285132A (ja) * | 1995-04-11 | 1996-11-01 | Ckd Corp | ヒーティング機能付真空弁 |
JPH08285133A (ja) * | 1995-04-17 | 1996-11-01 | Nec Kansai Ltd | 真空プロセス装置用ゲートバルブ |
JPH0989139A (ja) * | 1995-09-25 | 1997-03-31 | Ckd Corp | 真空用開閉弁 |
JPH11325313A (ja) * | 1996-01-31 | 1999-11-26 | Benkan Corp | 半導体製造装置用無摺動ゲートバルブ |
JPH11195649A (ja) * | 1998-01-05 | 1999-07-21 | Ebara Corp | 弁装置 |
JPH11214317A (ja) * | 1998-01-27 | 1999-08-06 | Kokusai Electric Co Ltd | 基板処理装置および基板処理方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116732495A (zh) * | 2023-07-17 | 2023-09-12 | 赛瑞达智能电子装备(无锡)有限公司 | 一种lpcvd双层炉管及其操控方法 |
CN116732495B (zh) * | 2023-07-17 | 2024-06-04 | 赛瑞达智能电子装备(无锡)有限公司 | 一种lpcvd双层炉管及其操控方法 |
Also Published As
Publication number | Publication date |
---|---|
TWI366874B (ja) | 2012-06-21 |
KR20060035576A (ko) | 2006-04-26 |
JP4187599B2 (ja) | 2008-11-26 |
KR101108379B1 (ko) | 2012-01-30 |
US8051870B2 (en) | 2011-11-08 |
TW200504875A (en) | 2005-02-01 |
JP2005026516A (ja) | 2005-01-27 |
US20060162780A1 (en) | 2006-07-27 |
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