WO2019053869A1 - 基板処理装置 - Google Patents
基板処理装置 Download PDFInfo
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- WO2019053869A1 WO2019053869A1 PCT/JP2017/033414 JP2017033414W WO2019053869A1 WO 2019053869 A1 WO2019053869 A1 WO 2019053869A1 JP 2017033414 W JP2017033414 W JP 2017033414W WO 2019053869 A1 WO2019053869 A1 WO 2019053869A1
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- 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
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- 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
- H01L21/67253—Process monitoring, e.g. flow or thickness monitoring
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- 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
- C23C16/52—Controlling or regulating the coating process
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- 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
- C23C16/54—Apparatus specially adapted for continuous coating
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- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
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- 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
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- 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
- H01L21/677—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 conveying, e.g. between different workstations
- H01L21/67739—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 conveying, e.g. between different workstations into and out of processing chamber
- H01L21/67742—Mechanical parts of transfer devices
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- H01L21/677—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 conveying, e.g. between different workstations
- H01L21/67763—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 conveying, e.g. between different workstations the wafers being stored in a carrier, involving loading and unloading
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- 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
- H01L21/687—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 using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68707—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 using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a robot blade, or gripped by a gripper for conveyance
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- H—ELECTRICITY
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- 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
- H01L21/687—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 using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—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 using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68742—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 using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by a lifting arrangement, e.g. lift pins
Definitions
- the present disclosure relates to a substrate processing apparatus.
- the transfer robot unit for transferring the substrate transfers the substrate into the processing chamber
- the processing gas supply unit supplies the processing gas
- the heating unit is heated to a predetermined temperature.
- a substrate configured to perform a predetermined process such as a film formation process on a substrate in the process chamber (see, for example, Patent Document 1).
- the present disclosure provides a technology capable of prolonging the life of the power supply necessary to control the operation of the substrate processing apparatus.
- a processing chamber for processing substrates A processing gas supply unit for supplying a processing gas to the substrate; A heating unit for heating the substrate; A transfer robot unit that transfers the substrate; A first power supply unit connected to at least one of the processing gas supply unit, the heating unit, and each unit of the transfer robot unit; A first control unit provided between at least one of the units and the first power supply unit; A second power supply unit having two or more power supplies for driving the first control unit; The first control unit is provided between the first control unit and the second power supply unit, and the power ratio from each of the two or more power supplies in the second power supply unit is set to a predetermined value.
- a second control unit for supplying power to the Technology is provided.
- the life of the power supplies can be extended as compared to the case where only one power supply is used.
- the substrate processing apparatus 1 shown here as an example is used in one step of the manufacturing process of a semiconductor device (semiconductor device), and CVD is performed on a substrate 2 such as a silicon wafer (hereinafter simply referred to as “wafer”). It performs predetermined processing such as processing.
- An I / O stage (substrate storage container transfer unit) 5 on which a substrate storage container (hereinafter referred to as a "cassette") 3 called FOUP is mounted is provided on the front surface of the housing 4 of the substrate processing apparatus 1
- the loading of the cassette 3 into the housing 4 and the unloading of the cassette 3 from inside the housing 4 are performed via the I / O stage.
- a cassette shelf (storage means) 6 for storing the loaded cassette 3 is provided in the housing 4, and a loading area of a boat (substrate holder) 7 described later, which is a transfer area of the wafer 2.
- An airtight chamber 8 is provided as an unloading space.
- the interior of the hermetic chamber 8 is filled with an inert gas such as N 2 gas in order to prevent the native oxide film of the wafer 2.
- a plurality of sets (two sets in the drawing) of cassette mounting stages (substrate storage container mounting means) 9 and 11 are provided on the front side of the airtight chamber 8, and the cassette mounting stages 9 and 11 of the airtight chamber 8
- the cassette openers 12 and 13 (opening and closing means) are provided in the facing portion of the cassette.
- the cassette openers 12 and 13 open and close a lid (not shown) for closing an opening provided on one side of the cassette 3, and the cassette openers 12 and 13 individually separate the cassettes 3 placed on the cassette placing stages 9 and 11. It can be opened and closed.
- the transfer of the cassette 3 between the cassette mounting stages 9 and 11, the cassette shelf 6 and the I / O stage 5 is performed by the cassette transfer unit 14.
- Air cleaned by a clean unit (not shown) provided in the housing 4 is sent to the transfer space 15 of the cassette 3 by the cassette transfer unit 14.
- a boat 7 as a substrate holder on which a plurality of wafers 2 are loaded horizontally in multiple stages is provided inside the hermetic chamber 8, and the notch (or orientation flat) of the wafer 2 is set at an arbitrary position.
- a substrate alignment device 16 for aligning, and further, a wafer transfer machine for transferring the wafer 2 between the cassette 3 on the cassette mounting stages 9 and 11, the substrate alignment device 16 and the boat 7 (substrate transfer Part) 17 is provided.
- a processing furnace 18 for processing the wafer 2 is provided at the upper part of the hermetic chamber 8, and a furnace port which is a lower end opening of the processing furnace 18 is opened and closed by a furnace port gate valve 19.
- a boat elevator (lifting and lowering unit) 21 is provided below the processing furnace 18 for loading the boat 7 into the processing furnace 18 or unloading the processing furnace 18 with the furnace port gate valve 19 open.
- the cassette transfer unit 14, the wafer transfer unit 17 and the boat elevator 21 function as a “transfer robot unit” which transfers the wafer 2 in the housing 4 of the substrate processing apparatus 1.
- the processing furnace 18 has an outer tube made of a heat resistant material such as quartz (SiO 2 ), for example.
- the outer tube has a hollow cylindrical shape, and an inner tube whose upper and lower ends are open is concentrically disposed in the outer tube.
- a boat 7 on which a plurality of wafers 2 are horizontally stacked in multiple stages is carried (boat loading) into the inner tube of the processing furnace 18 by the boat elevator 21.
- the seal cap airtightly closes (seals) the lower end of the outer tube through the O-ring.
- the boat 7 carried into the processing furnace 18 is rotated by the rotation mechanism 20. In this state, predetermined processing such as CVD processing is performed on the wafers 2 held by the boat 7 as described later. That is, the processing furnace 18 functions as a “processing chamber” for processing the wafer 2.
- a heater 33 as a heating means is concentrically disposed on the outer periphery of the outer tube in the processing furnace 18.
- the heater 33 is for heating the wafer 2 in the processing furnace 18 to a predetermined temperature.
- the degree of energization of the heater 33 is feedback-controlled based on the temperature information detected by the temperature sensor (not shown) so that the processing furnace 18 has a predetermined temperature distribution. That is, the heater 33 functions as a “heating unit” that heats the wafer 2.
- processing gas supply unit for supplying gas into the processing furnace 18 and an exhaust system for exhausting the inside of the processing furnace 18 are connected to the processing furnace 18 (all are not shown). Details of these will be described later.
- the predetermined processing is performed on the wafer 200 in one process of the manufacturing process of the semiconductor device (semiconductor device) as described above.
- the substrate processing apparatus 100 includes a processing container 202.
- the processing container 202 is formed of, for example, a metal material such as aluminum (Al) or stainless steel (SUS) or quartz, and is formed as a flat sealed container having a circular cross section.
- the processing container 202 includes an upper container 202a and a lower container 202b, and a partition part 204 is provided between them.
- a space surrounded by the upper container 202 a above the partition portion 204 functions as a processing space (hereinafter also referred to as “processing chamber”) 201 for processing the wafer 200. That is, the substrate processing apparatus 100 has a function as the processing chamber 201 for processing the wafer 2.
- a space surrounded by the lower container 202 b in a space below the partition portion 204 functions as a transfer space (also referred to as a transfer chamber) 203 for transferring the wafer 200.
- a transfer space also referred to as a transfer chamber
- a substrate loading / unloading port 1480 adjacent to the gate valve 1490 is provided on the side surface of the lower container 202b, and a transfer chamber (not shown) with the wafer 200 via the substrate loading / unloading port 1480. It is supposed to move between.
- a plurality of lift pins 207 are provided at the bottom of the lower container 202b. Furthermore, the lower container 202b is grounded.
- a substrate support unit (susceptor) 210 for supporting the wafer 200 is provided.
- the susceptor 210 includes a substrate mounting table 212 having a mounting surface 211 on which the wafer 200 is mounted.
- the substrate mounting table 212 incorporates a temperature control unit 213 that adjusts the temperature of the wafer 200 on the mounting surface 211.
- the temperature adjustment unit 213 is configured to maintain the wafer 200 at a predetermined temperature by heating or cooling the wafer 200 on the mounting surface 211. That is, the temperature adjustment unit 213 functions at least as a “heating unit” that heats the wafer 200.
- a temperature control unit 400 that controls the temperature to be adjusted is connected to the temperature adjustment unit 213.
- the substrate mounting table 212 incorporates a bias electrode 256 for applying a bias voltage in the processing chamber 201.
- An impedance adjustment unit 257 for adjusting a bias voltage to be applied is connected to the bias electrode 256.
- through holes 214 through which the lift pins 207 pass are provided at positions corresponding to the lift pins 207, respectively.
- the substrate mounting table 212 is supported by a shaft 217.
- the shaft 217 penetrates the bottom of the processing container 202, and is further connected to the elevating mechanism 218 outside the processing container 202.
- the substrate mounting table 212 can be moved up and down by operating the lifting mechanism 218. That is, the elevating mechanism 218 functions as a “transfer robot unit” which transfers the wafer 200 on the substrate mounting table 212.
- the periphery of the lower end portion of the shaft 217 is covered by a bellows 219, and the inside of the processing chamber 201 is kept airtight.
- the substrate mounting table 212 is lowered such that the substrate mounting surface 211 is at the substrate loading / unloading port 1480 (wafer transfer position) when the wafer 200 is transferred, and the wafer 200 is in the processing chamber 201 when the wafer 200 is processed. Ascend to the processing position (wafer processing position). Specifically, when the substrate mounting table 212 is lowered to the wafer transfer position, the upper end portion of the lift pin 207 protrudes from the upper surface of the substrate mounting surface 211, and the lift pin 207 supports the wafer 200 from below. There is.
- the lift pins 207 are buried from the upper surface of the substrate mounting surface 211, and the substrate mounting surface 211 supports the wafer 200 from below.
- the lift pins 207 are in direct contact with the wafer 200, it is desirable that the lift pins 207 be formed of, for example, a material such as quartz or alumina.
- a gas inlet 241 for supplying various gases into the processing chamber 201 is provided in the upper part of the processing chamber 201, and a common gas supply pipe 242 is connected to the gas inlet 241.
- the configuration of the processing gas supply unit connected to the gas inlet 241 via the common gas supply pipe 242 will be described in detail later.
- a shower head 231 having a dispersion plate 234 is disposed in the upper portion of the processing chamber 201 in order to disperse the path 232 of the gas supplied from the gas inlet 241 and diffuse the path 232 evenly into the processing chamber 201. ing. At least the matching unit 251 and the high frequency power supply 252 are connected to the support member 244 of the dispersion plate 234 so that electromagnetic waves (high frequency power and microwaves) can be supplied. Thus, the gas supplied into the processing chamber 201 can be excited into plasma through the dispersion plate 234.
- An exhaust port 221 as a first exhaust unit for exhausting the atmosphere of the processing chamber 201 is provided on the upper surface of the inner wall of the processing chamber 201 (upper container 202a).
- An exhaust pipe 224a as a first exhaust pipe is connected to the exhaust port 221, and a pressure regulator 227 such as an APC (Auto Pressure Controller) that controls the inside of the processing chamber 201 to a predetermined pressure is connected to the exhaust pipe 224a.
- the vacuum pumps 223 are connected in series in order.
- the exhaust port 221, the exhaust pipe 224, and the pressure regulator 227 mainly constitute a first exhaust unit (exhaust line) which is one of the exhaust systems.
- the vacuum pump 223 may be configured to be included in the first exhaust unit.
- a transfer chamber exhaust port 1481 as a second exhaust unit for exhausting the atmosphere of the transfer chamber 203 is provided.
- An exhaust pipe 1482 as a second exhaust pipe is connected to the transfer chamber exhaust port 1481, and a pressure regulator 228 such as APC for controlling the inside of the transfer chamber 203 to a predetermined pressure is connected to the exhaust pipe 1482.
- Vacuum pumps (but not shown) are connected in series in order.
- the transfer chamber exhaust port 1481, the exhaust pipe 1482, and the pressure regulator 228 mainly constitute a second exhaust unit (exhaust line) which is another exhaust system.
- a vacuum pump (not shown) may be included in the second exhaust unit.
- the same configuration is provided to the vertical substrate processing apparatus 1 described above, so that exhaust from the inside of the processing furnace 18 is performed. It shall be done.
- Processing gas supply unit First, a processing gas supply unit for supplying a processing gas to the wafer 200 will be described with reference to FIG.
- the processing gas supply unit in the single-wafer type substrate processing apparatus 100 will be described as an example, but the same configuration can be applied to the vertical substrate processing apparatus 1 as well.
- a first gas supply pipe 113a, a second gas supply pipe 123a, and a third gas supply pipe 133a are connected to a common gas supply pipe 242 communicating with the processing chamber 201 via the gas inlet 241.
- the first gas supply pipe 113a is provided with a first gas supply source 113, a mass flow controller (MFC) 115 which is a flow rate controller (flow rate control unit), and a valve 116 which is an on-off valve in this order from the upstream direction. There is. Then, the gas containing the first element (the first processing gas) from the first gas supply source 113 is transferred to the processing chamber 201 via the MFC 115, the valve 116, the first gas supply pipe 113a, and the common gas supply pipe 242. Supplied.
- the first processing gas for example, a silicon-containing gas such as TEOS (Tetraethoxysilane) gas is used. However, the present invention is not limited to this, and other types of gas may be used.
- the second gas supply source 123, the MFC 125, and the valve 126 are provided in the second gas supply pipe 123a sequentially from the upstream direction. Then, from the second gas supply source 123, a gas (second processing gas) containing a second element different from the first element contained in the first processing gas is the MFC 125, the valve 126, the second gas supply pipe 123a, The gas is supplied to the processing chamber 201 via the common gas supply pipe 242.
- the second process gas for example, an oxygen-containing gas such as an O 3 gas is used.
- the present invention is not limited to this, and other types of gas may be used.
- the third gas supply source 133, the MFC 135, and the valve 136 are provided in the third gas supply pipe 133a sequentially from the upstream direction. Then, an inert gas is supplied from the third gas supply source 133 to the processing chamber 201 via the MFC 135, the valve 136, the third gas supply pipe 133a, and the common gas supply pipe 242.
- the inert gas is, for example, N 2 gas.
- a rare gas such as He gas, Ne gas, Ar gas or the like can be used as the inert gas.
- the processing gas supply unit having such a configuration, the first processing gas, the second processing gas, or the inert gas is supplied to the wafer 200 in the processing chamber 201 as necessary.
- the lifting mechanism 218 functioning as a transfer robot unit transfers the wafer 200 into the processing chamber 201, and functions as a heating unit for the wafer 200 in the processing chamber 201.
- the temperature adjustment unit 213 performs heating and the like, and the processing gas supply unit supplies the processing gas, thereby performing predetermined processing on the wafer 200 in the processing chamber 201.
- the vertical substrate processing apparatus 1 the boat elevator 21 transports the wafer 2 to the processing furnace 18 as a processing chamber, and the heater 33 functioning as a heating unit heats the wafer 2 in the processing furnace 18.
- the processing gas supply unit supplies the processing gas, thereby performing predetermined processing on the wafer 2 in the processing furnace 18.
- Such operations such as wafer transfer, heating, processing gas supply and the like can also affect the human body of the apparatus operator.
- the substrate processing apparatus 1, 100 incorporates a safety interlock unit for ensuring safe use of the apparatus operator.
- the safety interlock unit supplies the electron microscope when any abnormality (for example, a time-out error of a predetermined operation) is detected in at least one of the transfer robot unit performing the operation described above, the heating unit, and the processing gas supply unit. Shut off to stop the operation.
- any abnormality for example, a time-out error of a predetermined operation
- a driving motor 301 of the lifting mechanism 218 and its driving motor 301 Between the first power supply unit 302 connected to the first power supply unit 302 that supplies power to the drive motor 301, a first control unit 303 including an electric and electronic circuit that performs switching operation is provided.
- the first control unit 303 can detect the presence or absence of an abnormality in accordance with a predetermined determination criterion regarding the operation of the lifting mechanism 218, and supply power from the first power supply unit 302 to the drive motor 301 when the occurrence of the abnormality is detected.
- the first control unit 303 is connected to a second power supply unit 304 that supplies power necessary for the operation of the first control unit 303.
- the second power supply unit 304 is configured to have two power supplies 304 a and 304 b for driving the first control unit 303.
- the case where the two power supplies 304a and 304b are provided is taken as an example, but three or more power supplies may be provided. That is, the second power supply unit 304 may have two or more power supplies.
- a second control unit 305 including a protection circuit or the like for controlling power supply from the second power supply unit 304 to the first control unit 303 is provided between the first control unit 303 and the second power supply unit 304.
- the second control unit 305 supplies the power ratio from each of the two or more power supplies 304a and 304b in the second power supply unit 304 when supplying power from the second power supply unit 304 to the first control unit 303, as described later. It is configured to be adjustable.
- the second control unit 305 can set the power ratio from each of the two or more power supplies 304a and 304b to a predetermined value (for example, 50%: 50%), and in that state Power can be supplied to the first control unit 303.
- the same configuration example is also used to control the operation of the heating unit, the processing gas supply unit, etc. Apply.
- the drive motor 301 may be configured as a safety interlock unit that controls the operations of the cassette transfer device 14, the wafer transfer device 17, the boat elevator 21, the rotation mechanism 20, and the like.
- the same configuration example may be applied to control the operation of the heating unit, the processing gas supply unit, and the like.
- controller Next, with reference to FIG. 6, the controller 260 that controls the operation of the above-described units will be described.
- the controller 260 in the single-wafer type substrate processing apparatus 100 will be described as an example, but the same configuration can be applied to the vertical substrate processing apparatus 1.
- the controller 260 is for controlling the overall operation of the substrate processing apparatus 100, and in addition to the transfer robot unit, the heating unit and the processing gas supply unit described above, the first control unit 303 and the second control unit of the safety interlock unit. It is also connected to the control unit 305, and functions as a "third control unit" by being connected to each of these.
- the controller 260 is configured as a computer including a central processing unit (CPU) 260 a, a random access memory (RAM) 260 b, a storage device 260 c, and an I / O port 260 d.
- the RAM 260b, the storage device 260c, and the I / O port 260d are configured to be able to exchange data with the CPU 260a via the internal bus 260e.
- the controller 260 is configured to be connectable to an input / output device 261 configured as, for example, a touch panel or the like, and an external storage device 262.
- the input / output device 261 can input information to the controller 260, and the input / output device 261 functions as a “display unit” that outputs and displays information in accordance with the control of the controller 260. Furthermore, the controller 260 is configured to be connectable to the network 263 through the reception unit 285. This means that the controller 260 can also be connected to a host device 290 such as a host computer existing on the network 263.
- the storage device 260 c is configured by, for example, a flash memory, a hard disk drive (HDD), or the like.
- a control program for controlling the operation of the substrate processing apparatus 100, a process recipe in which the procedure and conditions of the substrate processing described later are described, and a process recipe used for processing the wafer 200 are set. Arithmetic data and processing data generated in the process are stored readably.
- the process recipe is a combination of processes so as to cause the controller 260 to execute each procedure in the substrate processing process described later and obtain a predetermined result, and functions as a program.
- the process recipe, the control program and the like are collectively referred to simply as a program.
- the RAM 260 b is configured as a memory area (work area) in which a program read by the CPU 260 a, operation data, processing data, and the like are temporarily stored.
- the I / O port 260d includes a gate valve 1490, an elevation mechanism 218, pressure regulators 227 and 228, a vacuum pump 223, MFCs 115, 125 and 135, valves 116, 126 and 136, a temperature control unit 400, an impedance adjustment unit 257, The high frequency power supply 252, the first control unit 303, the second control unit 305, and the like are connected.
- the CPU 260a as an arithmetic unit reads out and executes a control program from the storage device 260c, and reads out a process recipe from the storage device 260c in response to an input of an operation command from the input / output device 261 or the like.
- calculation data can be calculated by comparing and calculating the set value input from the reception unit 285 and the process recipe and control data stored in the storage device 260c.
- it is comprised so that execution processing etc. of decision processing of corresponding processing data (process recipe) etc. are possible from operation data.
- the CPU 260a performs the opening / closing operation of the gate valve 1490, the elevation operation of the elevation mechanism 218, the voltage adjustment of the impedance adjustment unit 257, the matching operation of the power of the matching unit 251, the high frequency according to the contents of the read process recipe.
- the control unit 305 and the like are configured to perform operation control and the like.
- the controller 260 is not limited to being configured as a dedicated computer, and may be configured as a general-purpose computer.
- an external storage device storing the above program for example, a magnetic disk, a magnetic disk such as a flexible disk or hard disk, an optical disk such as a CD or DVD, a magnetooptical disk such as MO, a semiconductor memory such as a USB memory or memory card
- the controller 260 according to the present embodiment can be configured by preparing the program 262 and installing a program in a general-purpose computer using the external storage device 262.
- the means for supplying the program to the computer is not limited to the case of supplying via the external storage device 262.
- the program may be supplied using communication means such as the network 263 (the Internet or a dedicated line) without using the external storage device 262.
- the storage device 260 c and the external storage device 262 are configured as computer readable recording media. Hereinafter, these are collectively referred to simply as a recording medium.
- recording medium when the term "recording medium" is used, when only the storage device 260c alone is included, only the external storage device 262 alone may be included, or both of them may be included.
- wafer when the word “wafer” is used, it means “wafer itself”, “a wafer and a predetermined layer or film formed on the surface thereof, and a laminate thereof "Body" (that is, when a predetermined layer or film formed on the surface is referred to as a wafer).
- surface of wafer when the term “surface of wafer” is used in this specification, it means “surface (exposed surface) of wafer itself” or “surface of a predetermined layer or film or the like formed on the wafer” That is, it may mean “the outermost surface of the wafer as a laminate”.
- the description “supplying a predetermined gas to a wafer” means “supplying a predetermined gas directly to the surface (exposed surface) of the wafer itself” or This may mean that "a predetermined gas is supplied to a layer, a film, or the like formed on the wafer, that is, the outermost surface of the wafer as a laminate”.
- a predetermined gas is supplied to a layer, a film, or the like formed on the wafer, that is, the outermost surface of the wafer as a laminate.
- a film forming process for forming a film on the wafer surface by CVD process or the like In the processing operation performed by the substrate processing apparatus 100 in the substrate processing step, a film forming process for forming a film on the wafer surface by CVD process or the like, and the processing operation is stopped when any abnormality is detected during the processing operation.
- Safety interlock processing and monitoring control processing for optimizing the safety interlock processing.
- the wafer 200 to be processed is loaded into the processing chamber 201. Specifically, after the wafer 200 is mounted on the lift pins 207, the substrate mounting table 212 is lifted by the lifting mechanism 218 to mount the wafer 200 on the substrate mounting surface 211, and the wafer 200 is mounted. It is positioned at the processing position (wafer processing position) in the processing chamber 201.
- the pressure in the processing chamber 201 is set to a predetermined pressure (vacuum degree), and the wafer 200 on the mounting surface 211 is specified based on the temperature value detected by the temperature sensor (not shown).
- the heating amount by the temperature adjustment unit 213 built in the substrate mounting table 212 is feedback controlled so as to be the temperature.
- the first processing gas such as TEOS gas is supplied to the processing chamber 201 at a predetermined flow rate through the first gas supply pipe 113a etc., and the second gas supply pipe 123a etc.
- a second process gas such as O 3 gas is supplied to the process chamber 201 at a predetermined flow rate through the same.
- a predetermined film such as a silicon oxide film (SiO film) is formed on the surface of the wafer 200 by the CVD process.
- plasma of the processing gas is generated in the processing chamber 201.
- the processed wafer is subjected to a purge process in the process chamber 201 by the supply of the inert gas through the third gas supply pipe 133 a and the like, a temperature reduction process in the process chamber 201 using the temperature adjustment unit 213, etc.
- An unloading process from the inside of the processing chamber 201 is performed to complete a series of processing operations for the wafer 200.
- the safety interlock unit monitors the safety of the operation. Specifically, in the process of performing the above-described film formation process, the safety interlock unit monitors the presence or absence of any abnormality occurrence, and when the occurrence of the abnormality is detected, the processing operation is stopped by cutting off the power supply. It has become. For example, with regard to the elevation mechanism 218 functioning as a transfer robot unit, the wafer 200 is transferred by the power supply from the first power supply unit 302, but the power supply is controlled by the first control unit 303.
- the operation of the drive motor 301 of the lifting and lowering mechanism 218 is stopped by interrupting the power supply from the first power supply unit 302.
- the power supply is controlled in the same manner for the temperature adjustment unit 213 for heating the wafer 200 and the like, the processing gas supply unit for supplying the processing gas to the wafer 200, and the like.
- the safety interlock unit performing such control processing, for example, power is supplied from the second power supply unit 304 also to the first control unit 303 which controls the control processing. That is, the first control unit 303 needs the power supply from the second power supply unit 304 in order to control the power supply from the first power supply unit 302. If the power supply from the second power supply unit 304 is interrupted, the first control unit 303 controls the object to be controlled regardless of the detection of occurrence of abnormality in order to eliminate the possibility of not functioning as a safety interlock unit. In the state in which the operation which becomes is stopped, that is, the function stop state (shutdown state) is made.
- the function stop state shutdown state
- the power supply to the first control unit 303 is preferably performed by a long-life power supply, and a power supply having excellent resistance to failure and the like.
- the power supply to the first control unit 303 is preferably performed by a long-life power supply, and a power supply having excellent resistance to failure and the like.
- the second power supply unit 304 that supplies power to the first control unit 303 has two or more power supplies 304a and 304b, and also performs the first control.
- a second control unit 305 is provided between the unit 303 and the second power supply unit 304. Then, each of two or more power supplies 304a and 304b supplies power to the first control unit 303, and the second control unit 305 adjusts the power ratio from each of the power supplies 304a and 304b.
- the power ratio is controlled by the second control unit 305 so as to be a predetermined value such as 50%: 50%, for example, when the second power supply unit 304 has two power supplies 304a and 304b. .
- the power ratio may be determined in advance, and is not limited to a specific value. After performing such adjustment of the power ratio, power supply to the first control unit 303 in the adjusted state is performed.
- the second power supply unit 304 uses only one power supply if the power ratio from the two or more power supplies 304a and 304b is adjusted to a predetermined value when supplying power to the first control unit 303. As compared with the case where it does, the power supply quantity per one of each power source 304a, 304b is restrained, as a result, the life of each power source 304a, 304b can be lengthened. That is, by adjusting the power ratio from the two or more power supplies 304a and 304b and performing power supply in parallel, the lifespan of each of the power supplies 304a and 304b can be extended.
- any one of the respective power supplies 304a and 304b may be temporarily provided. Even if a failure occurs or the battery reaches its end of life (hereinafter simply referred to as “a failure etc.”), the power supply from the one where no failure or the like has occurred is continued. It can be avoided that the power supply to the control unit 303 is completely cut off.
- the second power supply unit 304 has two or more power supplies 304a and 304b, and the second control unit 305 sets the power ratio from each of the power supplies 304a and 304b to a predetermined value. Power supply to the first control unit 303. Therefore, the life of the second power supply unit 304 that supplies the power can be extended, and a failure in the second power supply unit 304 can be achieved. Resistance to the like can be made excellent.
- any one of the power supplies 304a and 304b may be temporarily output. Even if a failure or the like occurs in the case, the power supply to the first control unit 303 is not completely cut off. However, it is not preferable that the balance of the power ratio between the power supplies 304a and 304b is broken by this, and the influence thereof affects the film forming process and the like, and as a result, the film forming quality is deteriorated. From this, in the present embodiment, the following monitoring control processing is performed in order to make the safety interlock processing appropriate.
- the second control unit 305 when supplying power to the first control unit 303, the second control unit 305 sets the power ratio from the power supplies 304a and 304b of the second power supply unit 304 to a predetermined value (for example, 50%: 50). Adjust to%).
- the second control unit 305 measures the power value from each of the power supplies 304a and 304b at a preset timing (for example, each time a predetermined time passes) (step 101). The following steps are abbreviated as "S”. Then, the second control unit 305 obtains the power ratio (that is, the balance of the power values) between the power supplies 304a and 304b from the measured power value, and the power ratio falls within the range of the first predetermined value.
- the first predetermined value may be, for example, 70% at the upper limit and 30% at the lower limit.
- the second control unit 305 determines whether or not the power values of the respective power supplies 304a and 304b fall within the range of the upper limit 70% to the lower limit 30% when converted as the power ratio between them. It will be done.
- the first predetermined value is not limited to the upper limit 70% to the lower limit 30%, and may be appropriately set.
- the second control unit 305 continuously repeats the above-described processing (S101 to S102).
- the second control unit 305 performs the first detection as detection data to that effect.
- the data is transmitted to the controller 260 functioning as a third control unit.
- the controller 260 When receiving the first detection data from the second control unit 305, the controller 260 performs alarm notification using the input / output device 261 functioning as a display unit (S103). In addition, based on the instruction selected on the alarm screen described later, after completing all the processes in progress including the film forming process etc., continue the next film forming process or the next film forming process Is stopped (S104).
- the alarm notification is performed by displaying and outputting an alarm screen on the display screen of the input / output device 261. That is, when the alarm notification is required, the input / output device 261 switches the displayed operation screen to the alarm screen while following the control instruction from the controller 260.
- the alarm screen is a screen for notifying an apparatus operator of an alarm related to substrate processing being processed. Specifically, as shown in FIG. 8, the screen is for allowing the apparatus operator to select whether to continue the processing on the wafer 200 or to stop the processing on the wafer 200. That is, the input / output device 261 displays an alarm screen as a screen for selecting whether or not the next substrate processing needs to be started (specifically, whether or not the next substrate processing needs to be started after the substrate processing being processed is completed) Are displayed and output as alarm notification to the device operator.
- the controller 260 continues the process. That is, the next substrate processing is started.
- the controller 260 stops all processing after completion of the substrate processing currently being processed, and sets the state where maintenance work etc. can be performed on the substrate processing apparatus 100. . That is, without starting the next substrate processing, a maintenance operation or the like on the substrate processing apparatus 100 can be performed.
- the power ratio from the power supplies 304a and 304b of the second power supply unit 304 changes with time, and the balance of the power ratios exceeds the range of the first predetermined value. Then, the alarm notification to the apparatus operator is performed by displaying and outputting an alarm screen for selecting whether or not to start the next substrate processing. Therefore, it is possible to allow the apparatus operator to select whether to start the next substrate processing, and even if a failure or the like occurs in any of the power supplies 304a and 304b, the effect is satisfied. It can be avoided in advance that it reaches membrane processing etc.
- the damage to the substrate includes, for example, cracking of the wafer 200 due to abnormal operation of the lift mechanism 218 as the transfer robot unit, cracking of the wafer 200 due to abnormal cooling by the temperature adjustment unit 213, and film peeling on the surface thereof.
- the film characteristics on the surface of the wafer 200 may become unclear due to interruption of the film formation process.
- the power values from the respective power supplies 304a and 304b are measured (S201), and the power ratio is It is determined whether it is within the range of a predetermined value of 1 (for example, upper limit 70% to lower limit 30%) (S202). Then, as a result of this determination, if the power ratio is within the range of the first predetermined value (Y determination of S202), the above-described process is continuously repeated (S201 to S202).
- a predetermined value of 1 for example, upper limit 70% to lower limit 30%
- the power ratio when it is detected that the power ratio exceeds the range of the first predetermined value (N judgment of S202), in the second sequence example, the power ratio further falls within the range of the second predetermined value. It is judged whether it is inside (S203).
- the second predetermined value is set to a value different from the first predetermined value described above, and more specifically, to a value defining a range wider than the first predetermined value.
- the upper limit is 80% and the lower limit is It can be considered to be 20%.
- the second control unit 305 determines whether or not the power values of the power supplies 304a and 304b fall within the range of the upper limit 80% to the lower limit 20% when converted as the power ratio between them. It will be done.
- the second predetermined value is not limited to the upper limit 80% to the lower limit 20%, and may be set appropriately.
- the second control unit 305 transmits the first detection data to the controller 260, as in the case of the first sequence example described above.
- the controller 260 When receiving the first detection data from the second control unit 305, the controller 260 performs alarm notification using the input / output device 261 as in the case of the first sequence example described above (S204). In addition, based on the instruction selected on the alarm screen, after completing all the processes in progress including the film forming process etc., continue the next film forming process or stop the next film forming process (S205). This enables the apparatus operator to select whether or not to start the next substrate processing, and even if a failure or the like occurs in any of the power supplies 304a and 304b, the effect is It is possible to prevent in advance the film forming process and the like.
- the second control unit 305 When it is detected that the power ratio has exceeded not only the range of the first predetermined value but also the range of the second predetermined value (N determination in S203), the second control unit 305 The second detection data, which is detection data to that effect, is transmitted to the controller 260 functioning as a third control unit.
- the second control unit 305 detects that the power ratio has exceeded the second predetermined value range (N judgment in S102), at least one of the power supplies 304a and 304b is turned off. Power supply switching (ie, switching of the power supply state) is performed to turn on at least one of the other power supplies 304a and 304b (S206), and in this state, the first control unit 303 is Make sure to supply power.
- the second control unit 305 causes the measurement result of the power value to be temporally lower than the lower limit (for example, 20%) of the second predetermined value.
- the power supply to the first control unit 303 is prevented from being performed in the off state (for example, 0%) for the smaller one.
- the on state for example, 100%
- the second power supply unit 304 has three or more power supplies, for example, when only one power supply fails to reach the lower limit of the second predetermined value, the other two or more remaining power supplies are not
- the power supply may be shared to maintain the on state (100%). That is, even when the second control unit 305 deviates from the range of the second predetermined value, the second control unit 305 appropriately switches the on / off state of each power supply 304a, 304b to adjust the power ratio from each power supply 304a, 304b. , And the power supply to the first control unit 303 is not cut off.
- the controller 260 when receiving the second detection data from the second control unit 305, the controller 260 performs alarm notification using the input / output device 261 (S207). In addition, based on the instruction selected on the alarm screen, after completing all the processes in progress including the film forming process etc., continue the next film forming process or stop the next film forming process (S208).
- the alarm notification is performed by displaying and outputting an alarm screen on the display screen of the input / output device 261.
- the alarm screen at this time may be one that is displayed and output according to the first detection data (that is, the same as in the case of the first sequence example described above). As long as it is for alerting
- By performing such alarm notification even if a failure or the like occurs in any one of the power supplies 304a and 304b, it is possible to prevent the influence from being applied to a film forming process or the like. be able to.
- the controller 260 causes the maintenance information screen to be displayed and output on the display screen of the input / output device 261 instead of the alarm screen or in combination with the alarm screen. May be
- the maintenance information screen is a screen for notifying the apparatus operator that maintenance of any one of the power sources 304a and 304b of the second power source unit 304 is required as maintenance information regarding the power source. Specifically, as shown in FIG. 11, it indicates that maintenance for one of the power supplies 304 a and 304 b is necessary, and shifts the substrate processing apparatus 100 to the maintenance mode or calls a person in charge of maintenance. Is a screen for allowing the device operator to select
- the power ratio from each of the power supplies 304a and 304b deviates from the range of the second predetermined value, and a failure or the like occurs in any of the respective power supplies 304a, 304b. Even if there is a high possibility, it is possible to promptly respond to maintenance for repairing the failure or the like.
- the controller 260 When displaying the maintenance information screen on the input / output device 261, the controller 260 transmits maintenance data to the effect that maintenance is necessary to the host device 290 existing on the network 263 through the receiving unit 285. May be If maintenance data is transmitted to the upper apparatus 290 that manages the operation of the substrate processing apparatus 100, the upper apparatus 290 can perform processing utilizing the maintenance data, and maintenance can be performed more quickly and appropriately. It is possible to realize the response to
- the balance of the power ratio from each of the power supplies 304 a and 304 b of the second power supply unit 304 exceeds the range of the first predetermined value
- the balance of the power ratio is second If it exceeds the second predetermined value range, at least one of the power supplies 304a and 304b is turned off and the other at least one is turned on.
- the power supply is switched to be in the state, and the power supply to the first control unit 303 is performed in this state.
- the first control unit 303 There is no loss of power supply.
- the balance of the power ratio from each of the power supplies 304a and 304b exceeds the range of the first predetermined value, but the balance of the power ratio is within the second predetermined value range. Even when it exceeds, alarm notification to the equipment operator is performed. Therefore, it is possible to allow the apparatus operator to select whether to start the next substrate processing, and even if a failure or the like occurs in any of the power supplies 304a and 304b, the effect is satisfied. It can be avoided in advance that it reaches membrane processing etc.
- the maintenance information screen is displayed on the display screen of the input / output device 261 , Sends the maintenance data to the host device 290. Therefore, even if there is a high possibility that a failure or the like occurs in any of the power supplies 304a and 304b, it is possible to promptly and appropriately respond to maintenance for repairing the failure or the like. .
- the second power supply unit 304 has two or more power supplies 304a and 304b, and the second control unit 305 adjusts the power ratio from each of the power supplies 304a and 304b to a predetermined value. Then, the power supply to the first control unit 303 is performed. Therefore, the life of the second power supply unit 304 for supplying power to the first control unit 303 can be extended, and the tolerance to a failure or the like in the second power supply unit 304 can be made excellent. That is, by setting the power ratio from the two or more power supplies 304a and 304b to a predetermined value, the life of the power supply necessary for operation control can be extended as compared with the case where only one power supply is used.
- the alarm notification is performed even when the balance of the power ratio from the two or more power supplies 304a and 304b exceeds the range of the second predetermined value, so that the influence of the failure of each of the power supplies 304a and 304b becomes a film It is possible to prevent in advance the processing and the like.
- the film forming process such as the CVD process for forming the SiO film on the wafer surface has been described as an example, but the present invention is not limited thereto. That is, the present invention can be applied to film formation processes other than the thin film exemplified in the above-described embodiment, in addition to the film formation process exemplified in the above-described embodiment. Further, the specific content of the substrate processing is not limited, and when performing other substrate processing such as heat treatment (annealing treatment), plasma treatment, diffusion treatment, oxidation treatment, nitridation treatment, lithography treatment as well as film formation treatment. Is also applicable.
- heat treatment annealing treatment
- plasma treatment plasma treatment
- diffusion treatment diffusion treatment
- oxidation treatment oxidation treatment
- nitridation treatment lithography treatment
- the second power supply unit 304 mainly includes the two power supplies 304a and 304b has been described as an example, but the present invention is not limited to this and has two or more. What has been done is as already described.
- the following processing operations can be accommodated.
- FIG. 12 when operating the substrate processing apparatus 1, 100, at least one of the two or more power supplies is in a power supply state, and at least one other power supply B is supplied. Stopped. At this time, another power supply may be in a power supply state, in which case the power ratio is adjusted between the power supply A and the other power supply.
- the second control unit sets the power supply A to the power supply stop state while setting the power source B to the power supply state. 305 performs power supply switching. In this way, even if there is a failure or the like in the power supply A, power supply is performed by the power supply B, so continuous operation of the substrate processing apparatus 1, 100 becomes possible. That is, since long-term continuous operation of the substrate processing apparatus 1, 100 can be realized, as a result, the reliability of the substrate processing apparatus 1, 100 can be generally improved.
- a processing chamber for processing substrates A processing gas supply unit for supplying a processing gas to the substrate; A heating unit for heating the substrate; A transfer robot unit that transfers the substrate; A first power supply unit connected to at least one of the processing gas supply unit, the heating unit, and each unit of the transfer robot unit; A first control unit provided between at least one of the units and the first power supply unit; A second power supply unit having two or more power supplies for driving the first control unit; The first control unit is provided between the first control unit and the second power supply unit, and the power ratio from each of the two or more power supplies in the second power supply unit is set to a predetermined value.
- a second control unit for supplying power to the A substrate processing apparatus is provided.
- a third control unit connected to each of the processing gas supply unit, the heating unit, the transfer robot unit, the first control unit, and the second control unit;
- a display unit that performs display output according to control of the third control unit;
- the second control unit transmits first detection data to the third control unit when detecting that the power ratio of the two or more power supplies deviates from a first predetermined range.
- the substrate processing apparatus according to claim 1, wherein the third control unit causes the display unit to display an alarm screen related to substrate processing during processing when the first detection data is received.
- the second control unit detects that the power ratio of the two or more power supplies deviates from a second predetermined range
- the second control unit transmits second detection data to the third control unit and the two or more power supplies. Turning off at least one of the two or more of the two or more power supplies to supply power to the first control unit,
- the substrate processing apparatus according to Appendix 2, wherein the third control unit causes the display unit to display an alarm screen related to substrate processing during processing when the second detection data is received.
- the alarm screen is a screen for selecting whether or not to start the next substrate processing.
- the substrate processing apparatus according to Appendix 2 or 3 is provided.
- the second control unit detects that the power ratio of the two or more power supplies deviates from a second predetermined range
- the second control unit transmits second detection data to the third control unit and the two or more power supplies. Turning off at least one of the two or more of the two or more power supplies to supply power to the first control unit,
- the substrate processing apparatus according to any one of appendices 2 to 4, wherein the third control unit causes the display unit to display a maintenance information screen regarding a power supply when the second detection data is received.
- the substrate processing apparatus according to Appendix 5, wherein the maintenance information screen is a screen for notifying that maintenance of any of the two or more power supplies is required.
- the substrate processing apparatus according to Appendix 4 or 5, wherein the third control unit causes the display unit to display a maintenance information screen and transmits maintenance data to a host apparatus connected to the third control unit.
- a processing gas supply unit for supplying a processing gas to the substrate, a heating unit for heating the substrate, and a transfer robot unit for transferring the substrate
- the first power supply unit supplies power from the first power supply unit connected to at least one of the plurality of power supply units, and the first control unit provided between at least one of the units and the first power supply unit supplies power from the first power supply unit.
- a method of manufacturing a semiconductor device is provided.
- Procedures for processing the substrate In the processing of the substrate, at least one of a processing gas supply unit for supplying a processing gas to the substrate, a heating unit for heating the substrate, and a transfer robot unit for transferring the substrate,
- the first power supply unit supplies power from the first power supply unit connected to at least one of the plurality of power supply units, and the first control unit provided between at least one of the units and the first power supply unit supplies power from the first power supply unit.
- Procedures to control the While supplying power from the second power supply unit having two or more power sources for driving the first control unit to the first control unit, and supplying the power, the first control unit and the second power supply unit A second control unit provided between the second and third power supply units to set the power ratio from each of the two or more power supplies in the second power supply unit to a predetermined value;
- a program is provided that causes the substrate processing apparatus to execute the program.
- Procedures for processing the substrate In the processing of the substrate, at least one of a processing gas supply unit for supplying a processing gas to the substrate, a heating unit for heating the substrate, and a transfer robot unit for transferring the substrate,
- the first power supply unit supplies power from the first power supply unit connected to at least one of the plurality of power supply units, and the first control unit provided between at least one of the units and the first power supply unit supplies power from the first power supply unit.
- a computer readable recording medium storing a program that causes a substrate processing apparatus to execute the program is provided.
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Abstract
Description
基板を処理する処理室と、
前記基板に処理ガスを供給する処理ガス供給部と、
前記基板を加熱する加熱部と、
前記基板を搬送する搬送ロボット部と、
前記処理ガス供給部、前記加熱部および前記搬送ロボット部の各部の少なくともいずれかに接続された第1電源部と、
前記各部の少なくともいずれかと前記第1電源部との間に設けられた第1制御部と、
前記第1制御部を駆動させる二つ以上の電源を有する第2電源部と、
前記第1制御部と前記第2電源部との間に設けられ、前記第2電源部における前記二つ以上の電源のそれぞれからの電力比率を所定値となるようにして前記第1制御部への電力供給をさせる第2制御部と、
を有する技術が提供される。
以下に、本発明の実施の形態について、図面を参照しながら説明する。
先ず、図1および図2を参照しつつ、本実施形態に係る基板処理装置の概略構成の一例について説明する。ここでは、基板処理装置の一例として、縦型炉を具備する縦型基板処理装置を適用した場合について述べる。
また、気密室8の内部には、複数のウエハ2を水平多段に積載する基板保持具としてのボート7が設けられているとともに、ウエハ2のノッチ(またはオリエンテーションフラット)の位置を任意の位置に合わせる基板位置合せ装置16が設けられており、さらにはカセット載置ステージ9,11上のカセット3、基板位置合せ装置16およびボート7の間でウエハ2の搬送を行うウエハ移載機(基板搬送部)17が1組設けられている。
また、気密室8の上部には、ウエハ2を処理するための処理炉18が設けられており、その処理炉18の下端開口部である炉口が炉口ゲートバルブ19によって開閉される。そして、処理炉18の下方には、炉口ゲートバルブ19の開状態でボート7を処理炉18へローディングまたは処理炉18からアンローディングするボートエレベータ(昇降部)21が設けられている。
これらカセット搬送機14、ウエハ移載機17およびボートエレベータ21は、基板処理装置1の筐体4内でウエハ2を搬送する「搬送ロボット部」として機能するものである。
つまり、処理炉18は、ウエハ2を処理する「処理室」として機能するものである。
つまり、ヒータ33は、ウエハ2を加熱する「加熱部」として機能するものである。
続いて、図3を参照しつつ、本実施形態に係る基板処理装置の概略構成の他の例について説明する。ここでは、基板処理装置の他の例として、枚葉型の基板処理装置を適用した場合について述べる。
仕切部204よりも上方の上部容器202aに囲まれた空間は、ウエハ200を処理する処理空間(以下「処理室」ともいう。)201として機能する。つまり、基板処理装置100は、ウエハ2を処理する処理室201としての機能を有している。
一方、仕切部204よりも下方の空間の下部容器202bに囲まれた空間は、ウエハ200を移載するための搬送空間(移載室ともいう)203として機能する。移載室203として機能するために、下部容器202bの側面には、ゲートバルブ1490に隣接した基板搬入出口1480が設けられており、その基板搬入出口1480を介してウエハ200が図示しない搬送室との間を移動するようになっている。下部容器202bの底部には、リフトピン207が複数設けられている。さらに、下部容器202bは、接地されている。
基板載置台212は、載置面211上のウエハ200の温度を調整する温度調整部213を内蔵している。温度調整部213は、載置面211上のウエハ200に対する加熱または冷却を行うことによって、そのウエハ200を所定温度に維持するように構成されている。つまり、温度調整部213は、少なくとも、ウエハ200を加熱する「加熱部」として機能するものである。なお、温度調整部213には、調整する温度を制御する温度制御部400が接続されている。
また、基板載置台212は、温度調整部213に加えて、処理室201内にバイアス電圧を印加するためのバイアス電極256を内蔵している。そして、バイアス電極256には、印加するバイアス電圧を調整するためのインピーダンス調整部257が接続されている。
さらに、基板載置台212には、リフトピン207が貫通する貫通孔214が、リフトピン207と対応する位置にそれぞれ設けられている。
次に、上述した縦型基板処理装置1および枚葉型の基板処理装置100に共通する構成について説明する。
先ず、図4を参照しつつ、ウエハ200に処理ガスを供給する処理ガス供給部について説明する。ここでは、枚葉型の基板処理装置100における処理ガス供給部を例に挙げて説明するが、縦型基板処理装置1においても同様の構成を適用することが可能である。
第1処理ガスとしては、例えば、TEOS(Tetraethoxysilane)ガス等のシリコン含有ガスが用いられる。ただし、これに限られることはなく、他の種類のガスを用いても構わない。
第2処理ガスとしては、例えば、O3ガス等の酸素含有ガスが用いられる。ただし、これに限られることはなく、他の種類のガスを用いても構わない。
ここで、不活性ガスは、例えば、N2ガスである。なお、不活性ガスとして、N2ガスのほか、例えばHeガス、Neガス、Arガス等の希ガスを用いることができる。
次いで、図5を参照しつつ、縦型基板処理装置1または枚葉型の基板処理装置100が有する安全インターロック部について説明する。
次いで、図6を参照しつつ、上述した各部の動作を制御するコントローラ260について説明する。ここでは、枚葉型の基板処理装置100におけるコントローラ260を例に挙げて説明するが、縦型基板処理装置1においても同様の構成を適用することが可能である。
次に、上述した縦型基板処理装置1または枚葉型の基板処理装置100における処理動作例について説明する。以下の説明では、枚葉型の基板処理装置100における処理動作を例に挙げるが、縦型基板処理装置1においても同様の処理動作を行うことが可能である。ここで例に挙げて説明する処理動作は、半導体装置(半導体デバイス)の製造工程の一工程として行うもので、ウエハに対する所定処理を行う基板処理工程を構成するものである。
したがって、本明細書において「ウエハに対して所定のガスを供給する」と記載した場合は、「ウエハそのものの表面(露出面)に対して所定のガスを直接供給する」ことを意味する場合や、「ウエハに形成されている層や膜等に対して、すなわち、積層体としてのウエハの最表面に対して所定のガスを供給する」ことを意味する場合がある。
また、本明細書において「基板」という文言を用いた場合も「ウエハ」という言葉を用いた場合と同様であり、その場合、上記説明において、「ウエハ」を「基板」に置き換えて考えればよい。
なお、以下の説明において、基板処理装置100を構成する各部の動作はコントローラ260により制御される。
成膜処理に際しては、先ず、処理対象となるウエハ200を処理室201に搬入する。具体的には、ウエハ200をリフトピン207上に載置させた後、昇降機構218によって基板載置台212を上昇させて、ウエハ200を基板載置面211上に載置させるとともに、そのウエハ200を処理室201内の処理位置(ウエハ処理位置)に位置させる。
上述した一連の手順を経る成膜処理に際して、基板処理装置100には安全インターロック部が具備されていることから、その安全インターロック部によって動作の安全性が監視されている。具体的には、上述した成膜処理を行っている過程で、安全インターロック部が何らかの異常発生の有無を監視しており、異常発生を検出すると、電力供給の遮断により処理動作を停止させるようになっている。
例えば、搬送ロボット部として機能する昇降機構218については、第1電源部302からの電力供給によってウエハ200の搬送を行うが、その電力供給が第1制御部303によって制御されている。そして、第1制御部303が異常発生を検出すると、第1電源部302からの電力供給を遮断することで、昇降機構218の駆動モータ301の動作を停止させる。
ウエハ200への加熱等を行う温度調整部213や、ウエハ200への処理ガス供給を行う処理ガス供給部等についても、全く同様に電力供給が制御される。
第1制御部303への電力供給にあたっては、上述したように、第2電源部304が二つ以上の電源304a,304bを有していることで、仮に各電源304a,304bのうちのいずれかに故障等が発生した場合であっても、第1制御部303への電力供給が完全に途絶えてしまうことがない。ただし、これにより各電源304a,304bの間の電力比率のバランスが崩れ、その影響が成膜処理等に及んでしまい、その結果として成膜品質の低下等が生じてしまうことは好ましくない。このことから、本実施形態においては、安全インターロック処理の適切化を図るべく、以下のような監視制御処理を行うようになっている。
先ず、図7および図8を参照しつつ、監視制御処理に関する第1のシーケンス例について説明する。
一方、判定の結果、電力比率が第1の所定値の範囲を超えたことを検出した場合には(S102のN判定)、第2制御部305は、その旨の検出データである第1検出データを、第3制御部として機能するコントローラ260に対して送信する。
具体的には、基板の損傷としては、例えば、搬送ロボット部としての昇降機構218の異常動作によるウエハ200の割れ、温度調整部213による異常な冷却によるウエハ200の割れやその面上における膜剥がれ、成膜処理が中断されることによるウエハ200の面上の膜特性の不明確化等、が挙げられる。これらのうち、膜特性が不明確である場合には、どのような処理が行われたか不明であることから、ウエハ200の再利用が難しくなる。その場合、膜特性が悪い部分をエッチング等により除去して再利用することも考えられるが、膜特性が不明であると良好なエッチング等が困難になる。
また、処理雰囲気の異常化については、具体的には、処理ガスの供給や加熱等が所望の条件となる前の段階で停止した場合に、処理室201内の雰囲気が所定の環境から逸脱してしまい、その結果として、成膜処理を行っても膜特性が得られない雰囲気となってしまう、といったことが起こり得る。
しかるに、第1のシーケンス例では、アラーム報知を行って適切な処置を装置オペレータに選択させ得るようにしているので、仮に各電源304a,304bのうちのいずれかに故障等が発生した場合であっても、基板の損傷や処理雰囲気の異常化等が発生してしまうのを抑制することができる。
続いて、図9、図10および図11を参照しつつ、監視制御処理に関する第2のシーケンス例について説明する。
本実施形態によれば、以下に示す一つまたは複数の効果を奏する。
以上に、本発明の一実施形態を具体的に説明したが、本開示が上述の実施形態に限定されることはなく、その要旨を逸脱しない範囲で種々変更が可能である。
例えば、図12に示すように、基板処理装置1,100の運転に際して、二つ以上の電源のうち、少なくとも一つの電源Aを電源供給状態とするとともに、他の少なくとも一つの電源Bを電源供給停止状態とする。このとき、さらに他の電源が電源供給状態となっていてもよく、その場合には、電源Aと他の電源との間で電力比率が調整されることになる。そして、その状態で、例えば、電源Aが故障等により機能しなくなったことを検出すると、電源Aを電源供給停止状態とする一方で、電源Bを電源供給状態とするように、第2制御部305が電源切り替えを行う。このようにすれば、電源Aに故障等があっても、電源Bにより電力供給が行われるので、基板処理装置1,100の継続運転が可能となる。つまり、基板処理装置1,100の長期継続運転が実現可能となるので、その結果として、総合的に基板処理装置1,100の信頼性の向上が図れるようになる。
以下に、本発明の好ましい態様について付記する。
本発明の一態様によれば、
基板を処理する処理室と、
前記基板に処理ガスを供給する処理ガス供給部と、
前記基板を加熱する加熱部と、
前記基板を搬送する搬送ロボット部と、
前記処理ガス供給部、前記加熱部および前記搬送ロボット部の各部の少なくともいずれかに接続された第1電源部と、
前記各部の少なくともいずれかと前記第1電源部との間に設けられた第1制御部と、
前記第1制御部を駆動させる二つ以上の電源を有する第2電源部と、
前記第1制御部と前記第2電源部との間に設けられ、前記第2電源部における前記二つ以上の電源のそれぞれからの電力比率を所定値となるようにして前記第1制御部への電力供給をさせる第2制御部と、
を有する基板処理装置が提供される。
好ましくは、
前記処理ガス供給部、前記加熱部、前記搬送ロボット部、前記第1制御部および前記第2制御部のそれぞれに接続される第3制御部と、
前記第3制御部の制御に従って表示出力を行う表示部と、を有し、
前記第2制御部は、前記二つ以上の電源の電力比率が第1所定範囲から外れたことを検出すると、前記第3制御部に第1検出データを送信し、
前記第3制御部は、前記第1検出データを受信すると、処理中の基板処理に関するアラーム画面を前記表示部に表示させる
付記1に記載の基板処理装置が提供される。
好ましくは、
前記第2制御部は、前記二つ以上の電源の電力比率が第2所定範囲から外れたことを検出すると、前記第3制御部に第2検出データを送信するとともに、前記二つ以上の電源のうちの少なくとも一つをオフ状態とし、前記二つ以上の電源のうちの他の少なくとも一つをオン状態として、前記第1制御部への電力供給をさせ、
前記第3制御部は、前記第2検出データを受信すると、処理中の基板処理に関するアラーム画面を前記表示部に表示させる
付記2に記載の基板処理装置が提供される。
好ましくは、
前記アラーム画面は、次の基板処理の開始要否を選択させる画面である
付記2または3に記載の基板処理装置が提供される。
好ましくは、
前記第2制御部は、前記二つ以上の電源の電力比率が第2所定範囲から外れたことを検出すると、前記第3制御部に第2検出データを送信するとともに、前記二つ以上の電源のうちの少なくとも一つをオフ状態とし、前記二つ以上の電源のうちの他の少なくとも一つをオン状態として、前記第1制御部への電力供給をさせ、
前記第3制御部は、前記第2検出データを受信すると、電源に関するメンテナンス情報画面を前記表示部に表示させる
付記2から4のいずれか1つに記載の基板処理装置が提供される。
好ましくは、
前記メンテナンス情報画面は、前記二つ以上の電源のうちのいずれかのメンテナンスが必要であることを報知する画面である
付記5に記載の基板処理装置が提供される。
好ましくは、
前記第3制御部は、前記表示部にメンテナンス情報画面を表示させるとともに、前記第3制御部と接続する上位装置にメンテナンスデータを送信する
付記4または5に記載の基板処理装置が提供される。
本発明の他の一態様によれば、
基板を処理する工程と、
前記基板の処理にあたり、前記基板に処理ガスを供給する処理ガス供給部、前記基板を加熱する加熱部、および、前記基板を搬送する搬送ロボット部の各部の少なくともいずれかに対して、前記各部の少なくともいずれかに接続された第1電源部から電力を供給するとともに、前記各部の少なくともいずれかと前記第1電源部との間に設けられた第1制御部により前記第1電源部からの電力供給を制御する工程と、
前記第1制御部を駆動させる二つ以上の電源を有する第2電源部から前記第1制御部への電力供給を行うとともに、当該電力供給にあたり、前記第1制御部と前記第2電源部との間に設けられた第2制御部が、前記第2電源部における前記二つ以上の電源のそれぞれからの電力比率を所定値となるようにする工程と、
を有する半導体装置の製造方法が提供される。
本発明のさらに他の一態様によれば、
基板を処理する手順と、
前記基板の処理にあたり、前記基板に処理ガスを供給する処理ガス供給部、前記基板を加熱する加熱部、および、前記基板を搬送する搬送ロボット部の各部の少なくともいずれかに対して、前記各部の少なくともいずれかに接続された第1電源部から電力を供給するとともに、前記各部の少なくともいずれかと前記第1電源部との間に設けられた第1制御部により前記第1電源部からの電力供給を制御する手順と、
前記第1制御部を駆動させる二つ以上の電源を有する第2電源部から前記第1制御部への電力供給を行うとともに、当該電力供給にあたり、前記第1制御部と前記第2電源部との間に設けられた第2制御部が、前記第2電源部における前記二つ以上の電源のそれぞれからの電力比率を所定値となるようにする手順と、
をコンピュータによって基板処理装置に実行させるプログラムが提供される。
本発明のさらに他の一態様によれば、
基板を処理する手順と、
前記基板の処理にあたり、前記基板に処理ガスを供給する処理ガス供給部、前記基板を加熱する加熱部、および、前記基板を搬送する搬送ロボット部の各部の少なくともいずれかに対して、前記各部の少なくともいずれかに接続された第1電源部から電力を供給するとともに、前記各部の少なくともいずれかと前記第1電源部との間に設けられた第1制御部により前記第1電源部からの電力供給を制御する手順と、
前記第1制御部を駆動させる二つ以上の電源を有する第2電源部から前記第1制御部への電力供給を行うとともに、当該電力供給にあたり、前記第1制御部と前記第2電源部との間に設けられた第2制御部が、前記第2電源部における前記二つ以上の電源のそれぞれからの電力比率を所定値となるようにする手順と、
をコンピュータによって基板処理装置に実行させるプログラムが格納されたコンピュータ読み取り可能な記録媒体が提供される。
Claims (5)
- 基板を処理する処理室と、
前記基板に処理ガスを供給する処理ガス供給部と、
前記基板を加熱する加熱部と、
前記基板を搬送する搬送ロボット部と、
前記処理ガス供給部、前記加熱部および前記搬送ロボット部の各部の少なくともいずれかに接続された第1電源部と、
前記各部の少なくともいずれかと前記第1電源部との間に設けられた第1制御部と、
前記第1制御部を駆動させる二つ以上の電源を有する第2電源部と、
前記第1制御部と前記第2電源部との間に設けられ、前記第2電源部における前記二つ以上の電源のそれぞれからの電力比率を所定値となるようにして前記第1制御部への電力供給をさせる第2制御部と、
を有する基板処理装置。 - 前記処理ガス供給部、前記加熱部、前記搬送ロボット部、前記第1制御部および前記第2制御部のそれぞれに接続される第3制御部と、
前記第3制御部の制御に従って表示出力を行う表示部と、を有し、
前記第2制御部は、前記二つ以上の電源の電力比率が第1所定範囲から外れたことを検出すると、前記第3制御部に第1検出データを送信し、
前記第3制御部は、前記第1検出データを受信すると、処理中の基板処理に関するアラーム画面を前記表示部に表示させる
請求項1に記載の基板処理装置。 - 前記第2制御部は、前記二つ以上の電源の電力比率が第2所定範囲から外れたことを検出すると、前記第3制御部に第2検出データを送信するとともに、前記二つ以上の電源のうちの少なくとも一つをオフ状態とし、前記二つ以上の電源のうちの他の少なくとも一つをオン状態として、前記第1制御部への電力供給をさせ、
前記第3制御部は、前記第2検出データを受信すると、処理中の基板処理に関するアラーム画面を前記表示部に表示させる
請求項2に記載の基板処理装置。 - 前記第2制御部は、前記二つ以上の電源の電力比率が第2所定範囲から外れたことを検出すると、前記第3制御部に第2検出データを送信するとともに、前記二つ以上の電源のうちの少なくとも一つをオフ状態とし、前記二つ以上の電源のうちの他の少なくとも一つをオン状態として、前記第1制御部への電力供給をさせ、
前記第3制御部は、前記第2検出データを受信すると、電源に関するメンテナンス情報画面を前記表示部に表示させる
請求項3に記載の基板処理装置。 - 前記第3制御部は、前記表示部にメンテナンス情報画面を表示させるとともに、前記第3制御部と接続する上位装置にメンテナンスデータを送信する
請求項4に記載の基板処理装置。
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