WO2018150537A1 - 基板処理装置、半導体装置の製造方法およびプログラム - Google Patents
基板処理装置、半導体装置の製造方法およびプログラム Download PDFInfo
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- WO2018150537A1 WO2018150537A1 PCT/JP2017/005888 JP2017005888W WO2018150537A1 WO 2018150537 A1 WO2018150537 A1 WO 2018150537A1 JP 2017005888 W JP2017005888 W JP 2017005888W WO 2018150537 A1 WO2018150537 A1 WO 2018150537A1
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- Prior art keywords
- substrate
- heating unit
- reaction vessel
- heating
- processing apparatus
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- 239000000758 substrate Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims description 19
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000004065 semiconductor Substances 0.000 title claims description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 80
- 238000012545 processing Methods 0.000 claims description 99
- 238000001816 cooling Methods 0.000 claims description 7
- 238000004904 shortening Methods 0.000 abstract description 4
- 235000012431 wafers Nutrition 0.000 description 39
- 239000007789 gas Substances 0.000 description 37
- 238000012986 modification Methods 0.000 description 11
- 230000004048 modification Effects 0.000 description 11
- 239000011261 inert gas Substances 0.000 description 9
- 238000009413 insulation Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000011810 insulating material Substances 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000010453 quartz Substances 0.000 description 4
- 239000012495 reaction gas Substances 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- LXEXBJXDGVGRAR-UHFFFAOYSA-N trichloro(trichlorosilyl)silane Chemical compound Cl[Si](Cl)(Cl)[Si](Cl)(Cl)Cl LXEXBJXDGVGRAR-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
- H01L21/67098—Apparatus for thermal treatment
-
- 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/22—Diffusion of impurity materials, e.g. doping materials, electrode materials, into or out of a semiconductor body, or between semiconductor regions; Interactions between two or more impurities; Redistribution of impurities
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
-
- 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
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67248—Temperature monitoring
-
- 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
- H01L21/683—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 for supporting or gripping
Definitions
- the present invention relates to a substrate processing apparatus, a semiconductor device manufacturing method, and a program.
- a vertical substrate processing apparatus is used in the heat treatment of a substrate in a manufacturing process of a semiconductor device (device).
- a vertical substrate processing apparatus a predetermined number of substrates are loaded and held on a substrate holder, the substrate holder is loaded into the processing chamber, and the substrate is heated by a side heater installed on the outer periphery of the processing chamber.
- the processing gas is introduced into the room and the required processing is performed.
- An object of the present invention is to provide a technique capable of increasing the productivity by shortening the heating time in the processing chamber and eliminating the dummy wafer.
- a reaction vessel that houses a substrate holder for holding the substrate therein; A lid for closing the opening at the lower end of the reaction vessel; A cover portion covering the lid portion, The cover part is A middle-high portion formed so as to protrude into the reaction vessel; A flange portion formed at the lower end of the middle-high portion and disposed between the lid portion and the reaction vessel; A technique is provided in which a heat insulating part is installed in a hollow portion inside the middle and high part, and a heating part is installed between the heat insulating part and the middle and high part.
- the present invention it is possible to increase the productivity by shortening the heating time in the processing chamber and eliminating the dummy wafer.
- FIG. 3 is a diagram showing an AA cross section in FIG. 2. It is a longitudinal cross-sectional view which shows the modification of this invention. It is a longitudinal cross-sectional view which shows the modification of this invention. It is a longitudinal cross-sectional view which shows the modification of this invention. It is a longitudinal cross-sectional view which shows the modification of this invention. It is a longitudinal cross-sectional view which shows the modification of this invention. It is a longitudinal cross-sectional view which shows the modification of this invention. It is a longitudinal cross-sectional view which shows the modification of this invention. It is a longitudinal cross-sectional view which shows the modification of this invention. It is a longitudinal cross-sectional view which shows the modification of this invention.
- the substrate processing apparatus is configured as a vertical substrate processing apparatus (hereinafter referred to as a processing apparatus) 2 that performs a substrate processing process such as a heat treatment as one process of the manufacturing process in the method of manufacturing a semiconductor device (device).
- the processing apparatus 2 includes a cylindrical reaction tube 10 and a main heater (heater) 12 as a heating means (heating mechanism) installed on the outer periphery of the reaction tube 10.
- the reaction tube is made of, for example, quartz or SiC.
- a processing chamber 14 for processing a wafer W as a substrate is formed in a reaction vessel 11 described later.
- the reaction tube 10 is provided with a temperature detector 16 as a temperature detector.
- the temperature detector 16 is erected along the inner wall of the reaction tube 10.
- a cylindrical manifold 18 is connected to the lower end opening of the reaction tube 10 via a seal member 20 such as an O-ring to support the lower end of the reaction tube 10.
- the manifold 18 is formed of a metal such as stainless steel.
- a reaction vessel 11 is constituted by the reaction tube 10 and the manifold 18.
- the opening (furnace port) at the lower end of the reaction vessel 11 is opened and closed by a disk-shaped lid 22.
- the lid 22 is made of metal, for example.
- a sealing member 20 such as an O-ring is installed on the upper surface of the lid portion 22, and a cover portion 56 is further installed so as to cover the lid portion 22.
- the cover part 56 is made of, for example, quartz.
- a sealing member such as an O-ring is installed on the upper surface of the cover portion 56, whereby the inside of the reaction vessel 11 and the outside air are hermetically sealed. The detailed configuration of the furnace port will be described later.
- the processing chamber 14 stores therein a boat 26 as a substrate holder for supporting a plurality of, for example, 25 to 150 wafers W vertically in a shelf shape.
- the boat 26 is made of, for example, quartz or SiC.
- the boat 26 is supported above the cover portion 56 by a rotating shaft 28 that passes through the holes of the lid portion 22 and the cover portion 56.
- a magnetic fluid seal is provided at a portion of the lid portion 22 through which the rotation shaft 28 passes, and the rotation shaft 28 is connected to a rotation mechanism 30 installed below the lid portion 22.
- the rotating shaft 28 is configured to be rotatable while the inside of the reaction vessel 11 is hermetically sealed.
- the lid portion 22 is driven in the vertical direction by a boat elevator 32 as a lifting mechanism. Thereby, the boat 26 and the lid part 22 are moved up and down integrally, and the boat 26 is carried into and out of the reaction vessel 11.
- the processing apparatus 10 includes a gas supply mechanism 34 that supplies a gas used for substrate processing into the processing chamber 14.
- the gas supplied by the gas supply mechanism 34 is changed according to the type of film to be formed.
- the gas supply mechanism 34 includes a source gas supply unit, a reaction gas supply unit, and an inert gas supply unit.
- the raw material gas supply unit includes a gas supply pipe 36a.
- a gas flow controller (MFC) 38a which is a flow rate controller (flow rate control unit), and a valve 40a, which is an on-off valve, are provided in order from the upstream direction. It has been.
- the gas supply pipe 36 a is connected to a nozzle 44 a that penetrates the side wall of the manifold 18.
- the nozzle 44 a is erected in the vertical direction in the reaction tube 10 and has a plurality of supply holes that open toward the wafers W held by the boat 26.
- the source gas is supplied to the wafer W through the supply hole of the nozzle 44a.
- the reaction gas is supplied to the wafer W from the reaction gas supply unit through the supply pipe 36b, the MFC 38b, the valve 40b, and the nozzle 44b with the same configuration.
- an inert gas is supplied to the wafer W via supply pipes 36c and 36d, MFCs 38c and 38d, valves 40c and 40d, and nozzles 44a and 44b.
- An exhaust pipe 46 is attached to the manifold 18.
- the exhaust pipe 46 is connected with a pressure sensor 48 as a pressure detector (pressure detection unit) for detecting the pressure in the processing chamber 14 and an APC (Auto Pressure Controller) valve 40 as a pressure regulator (pressure adjustment unit).
- a vacuum pump 52 as an evacuation device is connected.
- a heat insulating portion 24 is disposed below the processing chamber 14 in the heat insulating region below the wafer processing region.
- the cover portion 56 includes a middle-high portion 56A and a flange portion 56B formed at the lower end of the middle-high portion 56A.
- the cover portion 56 is formed so that the middle-high portion 56A protrudes into the reaction tube 10, that is, enters the processing chamber 14.
- the cover part 56 has a circular cross section, and a through hole 56 ⁇ / b> C through which the rotary shaft 28 passes is formed in the center of the cover part 56.
- the heat insulation part 24 is installed in the hollow part inside the middle and high part 56A.
- the heat insulating part 24 is made of, for example, carbon felt.
- a heating part 58 as a heating mechanism is installed between the heat insulating part 24 and the middle / high part 56A.
- the heating unit 58 is installed so as to cover the inside of the middle / high part 56A.
- the heating unit 58 includes a first heating unit 58A, a second heating unit 58B, and a third heating unit 58C.
- the first heating unit 58A is installed so as to face the ceiling of the middle-high part 56A so as to heat the wafer W below the boat 26. As shown in FIG.
- the 2nd heating part 58B is installed in the side surface of the middle-high part 56A so that the furnace port part under reaction container 11 may be heated.
- the third heating unit 58C is installed on the side surface of the middle / high part 56A on the side of the through hole 56C so as to heat the rotary shaft 28.
- Rotating mechanism 30, boat elevator 32, MFCs 38a to 38d and valves 40a to 40d of gas supply mechanism 34, APC valve 50, heater 12 and heating unit 58 are connected to controller 100 for controlling them.
- the controller 100 is composed of, for example, a microprocessor (computer) having a CPU, and is configured to control the operation of the processing device 2.
- an input / output device 102 configured as a touch panel or the like is connected to the controller 100.
- the controller 100 is connected to a storage unit 104 as a storage medium.
- the storage unit 104 stores a control program for controlling the operation of the processing device 10 and a program (also referred to as a recipe) for causing each component unit of the processing device 2 to execute processing according to processing conditions in a readable manner.
- the control program for controlling the operation of the processing device 10
- a program also referred to as a recipe
- the storage unit 104 may be a storage device (hard disk or flash memory) built in the controller 100, or a portable external recording device (magnetic disk such as magnetic tape, flexible disk or hard disk, CD or DVD, etc. It may be an optical disk, a magneto-optical disk such as an MO, or a semiconductor memory such as a USB memory or a memory card. Further, the program may be provided to the computer using a communication means such as the Internet or a dedicated line. The program is read from the storage unit 104 according to an instruction from the input / output device 102 as necessary, and the controller 100 executes processing according to the read recipe, so that the processing device 2 Under the control of 100, a desired process is executed.
- a storage device hard disk or flash memory
- a portable external recording device magnetic disk such as magnetic tape, flexible disk or hard disk, CD or DVD, etc. It may be an optical disk, a magneto-optical disk such as an MO, or a semiconductor memory such as a USB memory or a memory card.
- the program may be
- HCDS Si 2 Cl 6 : hexachlorodisilane
- O 2 oxygen
- SiO 2 silicon oxide
- the processing chamber 14 is evacuated (reduced pressure) by the vacuum pump 52 so that the inside of the processing chamber 14 has a predetermined pressure (degree of vacuum).
- the pressure in the processing chamber 14 is measured by the pressure sensor 48, and the APC valve 50 is feedback-controlled based on the measured pressure information.
- the wafer W in the processing chamber 14 is heated by the heater 12 and the first heating unit 58A so as to reach a predetermined temperature.
- the state of energization to the heater 12 and the first heating unit 58A is feedback-controlled based on the temperature information detected by the temperature detection unit 16 so that the processing chamber 14 has a predetermined temperature distribution.
- heating by the second heating unit 58B and the third heating unit 58C is also started.
- the rotation of the boat 26 and the wafer W by the rotation mechanism 30 is started.
- O 2 gas is supplied to the wafer W in the processing chamber 14.
- the O 2 gas is controlled to have a desired flow rate by the MFC 38b, and is supplied into the processing chamber 14 through the gas supply pipe 36b and the nozzle 44b.
- a SiO 2 film having a predetermined composition and a predetermined film thickness can be formed on the wafer W.
- processing conditions for forming the SiO 2 film on the wafer W include the following. Processing temperature (wafer temperature): 300 ° C. to 700 ° C. Processing pressure (pressure in processing chamber) 1 Pa to 4000 Pa, HCDS gas: 100 sccm to 10,000 sccm, O 2 gas: 100 sccm to 10,000 sccm, N 2 gas: 100 sccm to 10,000 sccm, By setting each processing condition to a value within the respective range, it is possible to appropriately progress the film forming process.
- the heating temperature of the heating unit 58 is the same temperature as the processing temperature of the first heating unit 58A and the temperature of the second heating unit 58B is lower than that of the first heating unit 58A.
- the temperature is such that it does not adhere, for example, 200 to 300 ° C.
- the processing gas may be decomposed in the vicinity of the furnace port or the temperature uniformity in the processing chamber 14 may be deteriorated.
- the third heating unit 58C is set to a temperature lower than that of the second heating unit 58B, for example, about 150 ° C. When the temperature of the third heating unit 58C is higher than that of the second heating unit 58B, a by-product may adhere to the rotating shaft 28.
- the heat insulating part can be installed outside the processing chamber.
- the bad influence of the wafer resulting from the material of a heat insulation part can be suppressed, and quality can be improved.
- the heat insulating portion is outside the processing chamber, the volume inside the processing chamber can be reduced, the pressure reduction / pressure increase time can be shortened, and the throughput can be improved.
- the material of the heat insulation part can be arbitrarily selected. For example, by selecting a material having a high heat insulating effect as the heat insulating material, the heat insulating region can be shortened and the product region can be expanded. Thereby, productivity can be improved. Further, it becomes possible to cope with a higher temperature process. Furthermore, by selecting a material having a small heat capacity as the heat insulating material, the recovery time at the time of temperature rise can be shortened, and the productivity can be further increased.
- the heat insulating material is disposed inside the processing chamber, contamination due to the material of the heat insulating material is generated, so that the material of the heat insulating material may be limited to quartz, SiC, or the like.
- the wall surface in contact with the process gas in the heat insulation region can be heated, the surface temperature can be increased, and the adhesion of by-products is suppressed. can do. Thereby, generation
- the first heating unit upper heater
- the temperature of the wafer below the processing chamber can be increased at high speed, and the recovery time can be shortened.
- a dummy wafer for keeping the temperature of the wafer region uniform may be installed at the bottom of the boat.
- the heating by the first heating unit can be suitably controlled, so that the wafer escapes. Heat can be compensated for, and there is no need to install dummy wafers. Thereby, since the soaking length can be extended, the number of wafers processed can be increased and the productivity can be improved.
- a step may be provided on the ceiling of the cover part 56 so that the center part of the ceiling of the cover part 56 protrudes upward.
- Modification 2 As shown in FIG. 5, may be divided first heating section 58A into the inner heating portion 58A 1 and the outer heating portion 58A 2. Further, the first heating unit 58A may be an annular heating unit instead of a planar heating unit. Or the height of the outside heating section 58A 2 lower than the height of inner heating portion 58A 1, by the temperature of the inner heating portion 58A 1 or higher than the temperature outside the heating section 58A 2, the processing chamber 14 downwardly Temperature uniformity can be improved. In addition, by dividing the first heating unit 58A into a plurality of zones in the radial direction, the in-plane temperature distribution at the bottom of the wafer region can be adjusted.
- Modification 3 As shown in FIG. 6, you may form so that the ceiling of the cover part 56 may incline partially. Furthermore, as shown in FIG. 7, the ceiling of the cover portion 56 may be formed so as to be inclined downward from the center in the radial direction so as to be entirely inclined. With such a configuration, the amount of heat applied to the wafer can be adjusted.
- a cooling passage may be provided so as to cool the inside of the heat insulating portion 24, and a cooling portion 60 configured to flow a refrigerant through the cooling passage may be provided.
- the heat insulating portion 24 can be rapidly cooled by flowing the refrigerant through the cooling passage, and the temperature lowering time can be shortened.
- the refrigerant for example, water or air can be flowed.
- the above-mentioned embodiment and modification can be used in appropriate combination.
- the heat insulation part outside the processing chamber as described above, it becomes possible to freely select the material of the heat insulating material, and it becomes possible to install a heating / cooling mechanism. It is possible to improve the usual heat insulation and controllability.
- the productivity can be improved by shortening the heating time in the processing chamber and eliminating the dummy wafer.
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Abstract
Description
基板を保持する基板保持体を内部に収容する反応容器と、
前記反応容器下端の開口部を閉塞する蓋部と、
前記蓋部を覆うカバー部と、を備え、
前記カバー部は、
前記反応容器内に突出するように形成された中高部と、
前記中高部の下端に形成され、前記蓋部および前記反応容器との間に配置されるフランジ部と、を有し、
前記中高部の内側の中空部分には断熱部が設置され、前記断熱部と前記中高部との間には加熱部が設置される技術が提供される。
複数枚のウエハWがボート26に装填(ウエハチャージ)されると、ボート26は、ボートエレベータ32によって処理室14内に搬入(ボートロード)され、反応容器11の開口部は蓋部22によって気密に閉塞(シール)された状態となる。
処理室14内が所定の圧力(真空度)となるように、真空ポンプ52によって真空排気(減圧排気)される。処理室14内の圧力は、圧力センサ48で測定され、この測定された圧力情報に基づきAPCバルブ50がフィードバック制御される。また、処理室14内のウエハWが所定の温度となるように、ヒータ12および第1加熱部58Aによって加熱される。この際、処理室14が所定の温度分布となるように、温度検出部16が検出した温度情報に基づきヒータ12および第1加熱部58Aへの通電具合がフィードバック制御される。また、第2加熱部58Bおよび第3加熱部58Cによる加熱も開始される。さらに、回転機構30によるボート26およびウエハWの回転を開始する。
[原料ガス供給工程]
処理室14内の温度が予め設定された処理温度に安定すると、処理室14内のウエハWに対してHCDSガスを供給する。HCDSガスは、MFC38aにて所望の流量となるように制御され、ガス供給管36aおよびノズル44aを介して処理室14内に供給される。
次に、HCDSガスの供給を停止し、真空ポンプ52により処理室14内を真空排気する。この時、不活性ガス供給部から不活性ガスとしてN2ガスを処理室14内に供給しても良い(不活性ガスパージ)。
次に、処理室14内のウエハWに対してO2ガスを供給する。O2ガスは、MFC38bにて所望の流量となるように制御され、ガス供給管36bおよびノズル44bを介して処理室14内に供給される。
次に、O2ガスの供給を停止し、真空ポンプ52により処理室14内を真空排気する。この時、不活性ガス供給部からN2ガスを処理室14内に供給しても良い(不活性ガスパージ)。
所定膜厚の膜を形成した後、不活性ガス供給部からN2ガスが供給され、処理室14内がN2ガスに置換されると共に、処理室14の圧力が常圧に復帰される。その後、ボートエレベータ32により蓋部22が降下されて、ボート26が反応容器11から搬出(ボートアンロード)される。その後、処理済ウエハWはボート26より取出される(ウエハディスチャージ)。
処理温度(ウエハ温度):300℃~700℃、
処理圧力(処理室内圧力)1Pa~4000Pa、
HCDSガス:100sccm~10000sccm、
O2ガス:100sccm~10000sccm、
N2ガス:100sccm~10000sccm、
それぞれの処理条件を、それぞれの範囲内の値に設定することで、成膜処理を適正に進行させることが可能となる。
本実施形態によれば、以下に示す1つ又は複数の効果が得られる。
図4に示すように、カバー部56の天井の中央部が上方へ突出するように、カバー部56の天井に段差をつけても良い。このような構成により、処理室14下方のウエハWの中心部分を集中的に加熱することができるため、処理室14下方のウエハWの成膜均一性を向上させることができる。
図5に示すように、第1加熱部58Aを内側加熱部58A1と外側加熱部58A2とに分割しても良い。さらに、第1加熱部58Aを面状の加熱部ではなく、環状の加熱部としても良い。外側加熱部58A2の高さを内側加熱部58A1の高さよりも低くしたり、内側加熱部58A1の温度を外側加熱部58A2の温度よりも高くしたりすることにより、処理室14下方の温度均一性を向上させることができる。また、第1加熱部58Aを半径方向に複数ゾーン分割することによって、ウエハ領域最下部の面内温度分布を調整することができる。
図6に示すように、カバー部56の天井を一部傾斜するように形成しても良い。さらに、図7に示すように、カバー部56の天井を全面傾斜するように、中心から径方向外向きに向けて斜めに下がるように形成しても良い。このような構成により、ウエハに与える熱量を調整することができる。
図8に示すように、断熱部24内を冷却するように冷却通路を設置し、冷却通路に冷媒を流すよう構成された冷却部60を設置しても良い。降温時には冷却通路に冷媒を流すことにより断熱部24を急速に冷却することができ、降温時間を短縮することができる。冷媒としては、例えば水やエアを流すことができる。
24 断熱部
56 カバー部
58 加熱部
Claims (13)
- 基板を保持する基板保持体を内部に収容する反応容器と、
前記反応容器下端の開口部を閉塞する蓋部と、
前記蓋部を覆うカバー部と、を備え、
前記カバー部は、
前記反応容器内に突出するように形成された中高部と、
前記中高部の下端に形成され、前記蓋部および前記反応容器との間に配置されるフランジ部と、を有し、
前記中高部の内側の中空部分には断熱部が設置され、前記断熱部と前記中高部との間には加熱部が設置される基板処理装置。 - 前記加熱部は、前記中高部の天井の内側に設置される第1加熱部と、前記中高部の前記反応容器側の側面の内側に設置される第2加熱部とで構成される請求項1記載の基板処理装置。
- 前記中高部の中央に貫通孔が形成され、前記貫通孔には前記基板保持体に接続される回転軸が挿通される請求項2記載の基板処理装置。
- 前記加熱部は、前記中高部の前記貫通孔側の側面に設置される第3加熱部をさらに備える請求項3記載の基板処理装置。
- 前記第1加熱部の加熱温度は前記第2加熱部の加熱温度より高く、前記第3加熱部の加熱温度は前記第2加熱部の加熱温度より低い請求項4記載の基板処理装置。
- 前記中高部の天井は、少なくとも一部分が傾斜になっている請求項4記載の基板処理装置。
- 前記中高部の天井は、全面が傾斜になっている請求項6記載の基板処理装置。
- 前記中高部の天井は、段差がつけられている請求項4記載の基板処理装置。
- 前記第1加熱部は内側加熱部と外側加熱部とに分割されている請求項4記載の基板処理装置。
- 前記内側加熱部と前記外側加熱部は、それぞれ環状の加熱部である請求項9記載の基板処理装置。
- 前記断熱部内部に前記断熱部を冷却する冷却部を設置する請求項4記載の基板処理装置。
- 反応容器内に基板を保持する基板保持体を収容し、前記反応容器下端の開口部をカバー部によって覆われた蓋部で閉塞する工程と、
前記反応容器内で前記基板を処理する工程と、を備え、
前記基板を処理する工程では、
前記反応容器内に突出するように形成され、その内側の中空部分に断熱部が設置された中高部と、前記中高部の下端に形成され、前記蓋部および前記開口部との間に配置されるフランジ部と、を有する前記カバー部の前記断熱部と前記中高部との間に設置された加熱部によって前記反応容器内が加熱される半導体装置の製造方法。 - 基板処理装置の反応容器内に基板を保持する基板保持体を収容し、前記反応容器下端の開口部をカバー部によって覆われた蓋部で閉塞する手順と、
前記反応容器内で前記基板を処理する手順と、を備え、
前記基板を処理する手順では、
前記反応容器内に突出するように形成され、その内側の中空部分に断熱部が設置された中高部と、前記中高部の下端に形成され、前記蓋部および前記開口部との間に配置されるフランジ部と、を有する前記カバー部の前記断熱部と前記中高部との間に設置された加熱部によって前記反応容器内が加熱される手順と、を有するコンピュータによって前記基板処理装置に実行させるプログラム。
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US11219096B2 (en) | 2018-12-05 | 2022-01-04 | Kokusai Electric Corporation | Substrate processing apparatus and furnace opening assembly thereof |
KR20240026092A (ko) | 2022-08-19 | 2024-02-27 | 도쿄엘렉트론가부시키가이샤 | 열처리 장치 |
JP7502009B2 (ja) | 2018-10-03 | 2024-06-18 | エーエスエム・アイピー・ホールディング・ベー・フェー | 基材処理装置および方法 |
KR102722486B1 (ko) | 2018-10-03 | 2024-10-25 | 에이에스엠 아이피 홀딩 비.브이. | 기판 처리 장치 및 방법 |
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