WO2007126016A1 - 膜位置調整方法、記憶媒体及び基板処理システム - Google Patents
膜位置調整方法、記憶媒体及び基板処理システム Download PDFInfo
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- WO2007126016A1 WO2007126016A1 PCT/JP2007/059098 JP2007059098W WO2007126016A1 WO 2007126016 A1 WO2007126016 A1 WO 2007126016A1 JP 2007059098 W JP2007059098 W JP 2007059098W WO 2007126016 A1 WO2007126016 A1 WO 2007126016A1
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- film forming
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- 239000000758 substrate Substances 0.000 title claims abstract description 141
- 238000000034 method Methods 0.000 title claims abstract description 113
- 238000012545 processing Methods 0.000 title claims abstract description 80
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- 230000015572 biosynthetic process Effects 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 5
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- 238000006243 chemical reaction Methods 0.000 description 4
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- 239000002184 metal Substances 0.000 description 4
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- 238000003384 imaging method Methods 0.000 description 2
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
- H01L21/68—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 positioning, orientation or alignment
- H01L21/681—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 positioning, orientation or alignment using optical controlling means
-
- 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
- C23C16/04—Coating on selected surface areas, e.g. using masks
-
- 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
-
- 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
- H01L21/67259—Position monitoring, e.g. misposition detection or presence detection
-
- 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
- H01L21/67288—Monitoring of warpage, curvature, damage, defects or the like
Definitions
- the present invention relates to a film position adjustment method, a storage medium, and a substrate processing system, and more particularly to a film position adjustment method that measures and eliminates a positional deviation of a film formed on the surface of a substrate.
- a substrate processing system includes a process chamber in which a metal film constituting an insulating film, wiring, or the like is formed on the surface of a disk-shaped wafer as a substrate by CVD (Chemical Vapor D mark osition) or the like.
- CVD Chemical Vapor D mark osition
- the center of the wafer and the center of the film coincide.
- the actual deposition position (depending on the process) relative to the reference deposition position (target position where the film is to be deposited) is caused by misalignment that occurs during the transfer of the force wafer or deviation of the plasma distribution in the process chamber. Deviations in the actual film position (hereinafter referred to as “film position deviation”) may occur (see Fig. 6).
- the position of the wafer on the mounting table is adjusted in the process chamber.
- the transfer arm (transfer unit) that transfers the wafer adjusts the position of the wafer relative to the plasma in the process chamber by adjusting the position of the wafer on the mounting table according to the film position shift. To do.
- a non-film formation portion in which no film is formed on the surface of the wafer usually occurs at the periphery of the wafer.
- the width of the non-deposition part is measured at several power points, and the film position deviation is calculated from the measured width of the non-deposition part.
- an operator When measuring the width of the non-film forming portion of the wafer, an operator carries the wafer out of the substrate processing system and measures the width using a metal microscope. Specifically, the widths at four locations (90 ° in the circumferential direction) on the periphery of the wafer are measured using a metallurgical microscope.
- the measurement method using a metal microscope requires the operator to unload the wafer with the substrate processing system force, and is calculated from the measured width of the non-film-forming portion. It is necessary for the operator to input the issued film position shift to the substrate processing system. Furthermore, since the allowable film position deviation is about 0.2 mm, it is necessary to repeat measurement and wafer position adjustment many times, which are greatly affected by measurement errors. In other words, it takes a lot of work to eliminate the film position shift.
- An object of the present invention is to provide a technique capable of easily eliminating the deviation of the position of the formed film and the reference position of the film.
- a film forming apparatus that forms a film on a surface of a substrate, a centering apparatus that performs centering of the substrate, and a control unit.
- the centering device includes a displacement sensor that measures the displacement of the center position of the substrate, and an image sensor that recognizes an image of a non-deposited portion when the film is not formed on the surface of the substrate.
- a film position adjusting method in a substrate processing system comprising: a film forming step of forming a film on a substrate by the film forming apparatus; and a non-adjustment in the substrate on which the film is formed in the film forming step by the image sensor.
- a substrate position adjusting step for adjusting the position of the substrate.
- the operator who does not need to carry the substrate out of the substrate processing system does not need to input the calculated position shift to the substrate processing system.
- the image sensor is used instead of the operator.
- a measurement error is small in order to measure the width of the non-film forming part.
- the substrate and the film are substantially circular, and in the width measuring step, the width of the non-film-forming portion is measured every 90 ° along the circumferential direction in the peripheral portion of the substrate.
- the width of the non-film-forming portion is increased every 90 ° along the circumferential direction in the peripheral portion of the substrate. Since it is measured, the center position of the formed film can be easily calculated, and the deviation of the position of the formed film and the reference position of the film can be easily calculated.
- the method further includes a center misalignment measuring step of measuring a misalignment of the center position of the substrate by the misalignment sensor after the film forming step.
- the method uses the centering device before the film forming step.
- the method further includes a centering step of centering the substrate by the centering device after the film forming step and before the width measuring step.
- the centering apparatus includes a film forming apparatus that forms a film on the surface of the substrate, a centering apparatus that performs centering of the substrate, and a control unit.
- a substrate processing system having a displacement sensor that measures the displacement of the center position of the substrate, an image sensor that does not form the film on the surface of the substrate, and that recognizes an image of a non-deposition portion.
- a computer-readable storage medium storing a program for causing a computer to execute a film position adjusting method, wherein the program forms a film on the substrate by the film forming apparatus, and the image forming module.
- a width measuring module that measures the width of the non-film-forming portion by a sensor and a reference film-forming position based on the width of the non-film-forming portion measured by the control unit. Formed on the substrate A positional deviation calculation module for calculating a positional deviation of the film; and a substrate position adjusting module for adjusting the position of the substrate in the film forming apparatus based on the positional deviation calculated by the control unit.
- a storage medium characterized by including the storage medium.
- a film forming apparatus that forms a film on a surface of a substrate, a centering device that performs centering of the substrate, and a control unit are provided, and the centering device includes the In the substrate processing system having a displacement sensor that measures the displacement of the center position of the substrate, the centering device is a non-film-forming device in which no film is formed on the surface of the substrate on which the film is formed by the film forming device.
- An image sensor having a function of recognizing a part and measuring the width of the non-film-forming part, and the control unit is configured to measure the width of the non-film-forming part with respect to a reference film-forming position
- the position shift of the film formed on the substrate is calculated, and the position of the substrate in the film forming apparatus is adjusted based on the calculated position shift.
- Substrate processing system which is provided.
- FIG. 1 is a plan view schematically showing a configuration of a substrate processing system according to an embodiment of the present invention.
- FIG. 2 is a block diagram showing the configuration of a system controller that controls the operation of each component of the substrate processing system of FIG.
- FIG. 3 is a horizontal sectional view schematically showing the configuration of the orienter shown in FIG. 1.
- FIG. 4 is a flowchart of a film position adjustment process executed in the substrate processing system of FIG.
- FIG. 5 is a plan view schematically showing the configuration of another substrate processing system to which the film position adjusting method of the present invention can be applied.
- FIG. 6 is a plan view for explaining a deviation of an actual film formation position with respect to a reference film formation position.
- Figure 1 shows the book It is a top view which shows schematic structure of the substrate processing system which concerns on embodiment.
- a substrate processing system 10 includes a plurality of process ships 11 for performing CVD processing, which is a film forming process using plasma, on a disk-shaped wafer W for semiconductor devices, and the plurality of process ships 11. And a loader module 9 as a common transfer chamber with a rectangular cross-section connected to each other.
- the loader module 9 is unloaded from the three hoop mounting tables 15 on which FOUPs (Front Opening Unified Pod) 14 each of which accommodates 25 wafers W are respectively mounted.
- An orienter 16 centering device that centers the wafer W is connected.
- the plurality of process ships 11 are connected to one side wall extending in the longitudinal direction of the loader module 9 and are disposed so as to face the three hoop mounting tables 15 with the loader module 9 interposed therebetween.
- the orienter 16 is connected to the longitudinal end of the loader module 9.
- a substrate transfer unit 19 for transferring the wafer W is provided.
- the substrate transfer unit 19 includes an arm 29 that can be expanded and contracted and rotated in the horizontal direction, and a bifurcated transfer fork 28 that is connected to the tip of the arm 29 and supports the wafer W.
- the substrate transfer unit 19 moves the transfer fork 28 that supports the wafer W by expanding and contracting and rotating the arm 29, thereby transferring the wafer W.
- the substrate transfer unit 19 takes out the wafer W from the FOUP 14 placed on the FOUP placement table 15 via the load port 20, and carries the taken wafer W to the process ship 11 and the orienter 16.
- the process ship 11 includes a process chamber 12 as a vacuum processing chamber for performing CVD processing on the wafer W, and a load lock module 18 that incorporates a substrate transfer unit 17 that delivers the wafer W to the process chamber 12. .
- the process chamber 12 includes a processing gas introduction device (not shown) that introduces a processing gas into the process chamber 12 and a high-frequency power that applies high-frequency power into the process chamber 12. It has poles (not shown).
- a circular film for example, a metal film constituting an insulating film or wiring is formed on the surface of the wafer W by a CVD process using plasma generated from the processing gas introduced into the process chamber 12.
- a mounting table 13 on which the wafer W is mounted and a ring (mounting table) that is arranged opposite to the mounting table 13 and concentrates the plasma toward the wafer W on the mounting table 13. (Members arranged in the vicinity) (not shown).
- Such a ring is called a focus ring.
- the plasma distribution near Whe W depends on the position of the ring. Therefore, when the relative positional relationship between the ring and the wafer W on the mounting table 13 is not appropriate, for example, when the position of the wafer W on the mounting table 13 is inappropriate, or when the position of the ring is inappropriate,
- the film position shift that is, the actual film forming position (the position of the film actually formed by the CVD process) is shifted from the reference film forming position (the target position where the film is to be formed).
- the position of the wafer W on the mounting table 13 can be adjusted by adjusting the position where the substrate transfer unit 17 delivers the wafer W to the mounting table 13, so that the relative position relationship between the ring and the wafer W can be adjusted.
- the staff can be adjusted appropriately.
- the pressure inside the loader module 9 is maintained at atmospheric pressure, and the pressure inside the process chamber 12 is maintained at vacuum.
- the load lock module 18 is provided with a vacuum side gate valve 21 at the connection portion with the process chamber 12 and an atmosphere side gate valve 22 at the connection portion with the loader module 9, and serves as a vacuum preliminary transfer chamber capable of adjusting the internal pressure. Composed.
- a substrate transfer unit 17 is installed at a substantially central portion.
- the substrate transfer unit 17 has an arm 27 that can be expanded and contracted and rotated in the horizontal direction, and a bifurcated transfer fork 25 that is connected to the tip of the arm 27 and supports the wafer W.
- the substrate transfer unit 17 moves the transfer fork 25 that supports the wafer W by expanding and contracting and rotating the arm 27, thereby transferring the wafer W.
- the substrate processing system 10 includes a system controller (control unit) (see FIG. 2) that controls the operation of the components of the substrate processing system 10 such as the process ship 11, the loader module 9, and the orienter 16, and the loader.
- An operation GUI (Graphical User Interface) 26 disposed at the longitudinal end of the module 9 is provided.
- the system controller controls the operation of each component according to a program corresponding to the CVD process.
- the operation GUI 26 has, for example, a touch panel display (not shown) having an LCD (Liquid Crystal Display) force.
- the touch panel display displays the operating status of each component and accepts operator input.
- FIG. 2 is a block diagram of a system controller that controls the operation of each component of the substrate processing system of FIG.
- the system controller includes an EC (Equipment Controller) 30, a plurality of MC 31 (Module Controller) 31, and a switching hub 32 that connects the EC 30 and each MC 31.
- the system controller is connected from the EC 30 via a LAN (Local Area Network) 33 to a PC 34 as a MES (Manufacturing Execution System) that manages the manufacturing process of the entire factory where the substrate processing system 10 is installed.
- MES Manufacturing Execution System
- MES Manufacturing Execution System
- the EC 30 is a main control unit (master control unit) that controls each operation of the substrate processing system 10 by controlling each MC 31.
- the EC30 has a CPU, RAM, HDD, etc., and sends a control signal according to the processing conditions of the wafer W specified by the operator in the operation GUI 26, that is, a program corresponding to the recipe, thereby Controls the operation of ship 11, loader module 9 and orienter 16.
- the switching hub 32 switches the MC 31 as the connection destination of the EC 30 according to the control signal from the EC 30.
- the MC 31 is a sub-control unit (slave control unit) that controls the operations of the process ship 11, the loader module 9, and the orienter 16, respectively.
- Each MC31 is connected to each I / O (input / output) module 37 via a GHOST network 36 by a DIST (Distribution) board 35. Connected to.
- the GHOST network 36 is installed on the MC board of each MC31 and is called 7 GHusr (Lreneral High-Speed Optimum Scalable Transceiver); it is a network realized by LSI.
- 7 GHusr Long-Speed Optimum Scalable Transceiver
- MC31 corresponds to the master and I / O module 37 corresponds to the slave.
- the I / O module 37 includes, for example, a plurality of I / O units 38 connected to each component (hereinafter referred to as "end device") in the process ship 11, and controls each end device. The signal and the output signal from each end device are transmitted.
- the end device connected to the I / O unit 38 in the IZO module 37 corresponds to, for example, the mounting table 13 of the process chamber 12, the processing gas introduction device, and the high frequency electrode.
- Each GHOST network 36 is also connected to an IZ board (not shown) that controls input / output of digital signals, analog signals, and serial signals in the lZ unit 38.
- the EC30 force switching hub 32, MC31, GHO ST network 36 and I / O module 37 according to the program corresponding to the CVD processing recipe.
- the CVD process is executed in the process ship 11.
- the I / O unit 38 connected to the plurality of end devices is modularized without constituting a plurality of end devices directly connected to the EC 30 to form a 1 / O module 37. Since the I / O module 37 is connected to the EC 30 via the MC 31 and the switching hub 32, the communication system can be simplified.
- the control signal transmitted by the EC30 includes an I / O unit connected to a desired end device.
- FIG. 3 is a horizontal sectional view showing a schematic configuration of the orienter in FIG.
- the orienter 16 is arranged corresponding to a casing 39, a turntable 40 arranged in the approximate center of the case 39, and a peripheral portion of the wafer W placed on the turntable 40.
- a centering mechanism (not shown) for centering the wafer W on the rotary table 40 using the substrate sensor 19 and the image sensor 41 and the orienter sensor 42 are provided.
- the wafer W is placed on the turntable 40, rotated in a horizontal plane, and the position of the center of the wafer W is measured by measuring the position of the periphery of the rotating wafer W by the orienter sensor 42. be able to.
- the centering mechanism After measuring the deviation of the center position of the wafer W by the orienter sensor 42, the centering mechanism once causes the substrate transfer unit 19 to receive the wafer W from the turntable 40, and then the substrate transfer unit 19 returns the wafer W to the turntable 40 again.
- centering is performed by adjusting the delivery position of the wafer W to the turntable 40 by the substrate transfer unit 19 based on the measured deviation of the center position of the wafer W. That is, in the illustrated embodiment, the centering mechanism is configured by the calculation and control functions realized by the substrate transfer unit 19, the turntable 40, the orienter sensor 42, and the MC31 (and / or EC30). .
- the image sensor 41 performs image recognition of the peripheral portion of the wafer W.
- the image sensor 41 includes a film forming unit (a portion where a film is formed) and a non-film forming unit (a portion where no film is formed) based on the contrast of the acquired image. Measure the width of the non-deposited part.
- a film forming unit a portion where a film is formed
- a non-film forming unit a portion where no film is formed
- the image sensor 41 is arranged at a position facing the peripheral edge of the wafer W centered on the rotating table 40.
- the orienter 16 is connected to each component of the orienter 16, for example, an orienter control unit 43 that controls the operation of the turntable 40 and the image sensor 41.
- the orienter control unit 43 is connected to the I / O section 38 of the MC 31 I / O module 37 corresponding to the orienter 16 in the system controller of FIG.
- Each component of the orienter 16 is connected to the IZ unit 38 in the IZ module 37 via the interlock signal line 44.
- the interlock signal line 44 is connected to the operation stop signal of each component of the orienter 16. Is transmitted from the orienter 16 to the I / O module 37.
- FIG. 4 is a flowchart of the film position adjustment process executed in the substrate processing system of FIG. This process is performed each time the process chamber 12 is maintained, for example, the ring is replaced.
- step S41 the wafer W from which the FOUP 14 force has also been unloaded is loaded into the orienter 16, and the orienter 16 centers the wafer W by the centering mechanism (step S41).
- the centered wafer W is loaded into the process chamber 12, and CVD processing is performed on the wafer W in the process chamber 12 to form a film on the surface of the wafer W (step S42).
- the CVD process at this time is executed according to a recipe different from the normal process recipe so that the boundary between the film and the non-film-forming portion appears clearly. Thereby, the contrast of the image acquired by the image sensor 41 of the orienter 16 is increased, and the image recognition can be performed with higher accuracy.
- the wafer W having a film formed on the surface is carried into the orienter 16, and the orienter 16 measures the deviation of the center position of the wafer W by the orienter sensor 42 (step S43). At this time, the wafer W may be centered by the centering mechanism.
- the orienter 16 recognizes an image of the peripheral portion of the wafer W by the image sensor 41 and measures the width of the non-deposition portion (step S44).
- the orienter 16 rotates the wafer W by the turntable 40, and the image sensor 41 measures the width of the non-film forming portion at every 90 ° along the circumferential direction at the peripheral portion of the wafer W. That is, the image sensor 41 measures the width of the non-deposition portion at four locations.
- the orienter 16 transmits to EC30 the deviation of the center position of the wafer W measured in step S43 and the width of the non-film forming part measured in step S44.
- EC30 is based on the width of the non-film forming part.
- the film position deviation specifically, the deviation of the center position of the formed film with respect to the center position of the wafer W is calculated (step S45).
- step S46 if the calculated film position deviation is within 0.2 mm, the EC 30 ends this process.
- E C30 determines the cause of the film position deviation based on the film position deviation and the center position deviation of the wafer W. Specifically, when the deviation of the center position of the wafer W is large, there is a high possibility that the deviation occurred during the transfer of the wafer W. Therefore, the placement position of the wafer W on the placement table 13 of the process chamber 12 If the deviation of the center position of the wafer W is small, there is a small possibility that a deviation occurred during the transfer of the wafer W, so the position of the ring in the process chamber 12 is inappropriate. Judge that there is.
- the EC 30 transmits the film position shift to the MC 31 corresponding to the process ship 11 that has performed film formation, and the MC 31 eliminates the film position shift based on the transmitted film position shift.
- the adjustment amount of the position of the wafer W on the mounting table 13 is calculated, and the relative positional relationship between the ring in the corresponding process chamber 12 and the wafer W on the mounting table 13 is adjusted based on the calculated adjustment amount (step After that, the process returns to step S41.
- the relative positional relationship can be adjusted by adjusting the position where the substrate transfer unit 17 delivers the wafer W to the mounting table 13, in step S47, for example, it is stored in the MC 31.
- the wafer W transfer position (wafer W transfer target position) is rewritten.
- the width of the non-deposition part of the wafer W is measured by the image sensor 41 of the orienter 16 included in the substrate processing system 10, and the non-deposition part of the non-deposition part measured by the EC 30 is measured.
- the film position deviation is calculated based on the width, and the relative positional relationship between the ring in the process chamber 12 and the wafer W on the mounting table 13 is adjusted based on the film position deviation calculated by the MC 31. That is, it is not necessary for the operator to unload the wafer W from the substrate processing system 10 to input the calculated film position deviation into the substrate processing system 10.
- the measurement error is small to measure the width of. Therefore, it is possible to easily eliminate the film position shift.
- the center position of the formed film can be easily calculated. You can The film position deviation can be easily calculated.
- the orienter 16 recognizes an image of the peripheral edge of the wafer W, if the center position of the wafer W is greatly displaced, the non-film forming portion may deviate from the imaging range of the image sensor 41. In order to prevent this, the wafer W may be centered prior to the image sensor 41 recognizing the peripheral edge of the wafer W in the processing of FIG. Thereby, it is possible to prevent the non-film-forming portion from deviating from the imaging range of the image sensor 41, and thus the width of the non-film-forming portion can be measured efficiently.
- the number of force measurement locations at which the image sensor 41 measures the width of the film formation portion at four locations is not limited to this, and is a number that can specify the center position of the formed film. Just do it.
- the image sensor 41 may measure the width of the non-film forming portion every 120 ° along the circumferential direction, that is, at three locations.
- the process of FIG. 4 can be applied not only when the film formation process is performed on the wafer W but also when the etching process is performed. Specifically, in the etched wafer W, the width of the non-etched portion at the peripheral edge of the wafer W is measured by the image sensor 41, whereby the actual etching relative to the reference etching region (etching target region) is measured. It is possible to calculate the shift of the chucking area (the circular area where the etching has been performed) and adjust the position of the wafer W on the mounting table in the process chamber in which the etching process is performed based on the calculated shift of the area.
- the chucking area the circular area where the etching has been performed
- the processing shown in Fig. 4 is executed every time maintenance of the process chamber 12 is performed.
- the execution timing of the processing shown in Fig. 4 is not limited to this. You can run it between the lots.
- the substrate processing system to which the film position adjusting method according to the present embodiment described above is applied is limited to a parallel type substrate processing system having two process ships arranged in parallel to each other as shown in FIG. Instead, as shown in FIG. 5, a substrate processing system in which a plurality of process modules as vacuum processing chambers for performing CVD processing on the wafer W are arranged radially may be used.
- FIG. 5 is a plan view showing a schematic configuration of a modified example of the substrate processing system to which the film position adjusting method according to the present embodiment is applied.
- the same components as those in the substrate processing system 10 of FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted.
- the substrate processing system 45 includes a hexagonal transfer module 46 in plan view, and four process modules 47 to 47 that perform a CVD process on the wafer W arranged radially around the transfer module 46. 50, a loader module 9 as a rectangular common transfer chamber, and two load lock modules 51 and 52 which are arranged between the transfer module 46 and the loader module 9 and connect the transfer module 46 and the loader module 9. Be prepared.
- the internal pressure of the transfer module 46 and each of the process modules 47 to 50 is maintained at a vacuum, and the transfer module 46 and each of the process modules 47 to 50 are connected to each other via gate valves 53 to 56, respectively. .
- each of the port lock modules 51 and 52 is provided with gate valves 57 and 58 at the connection portion with the transfer module 46, and door valves 59 and 60 at the connection portion with the loader module 9 to thereby increase the internal pressure. It is configured as a vacuum preparatory transfer chamber that can be adjusted.
- Each of the load lock modules 51 and 52 has mounting tables 61 and 62 for temporarily mounting the wafer W delivered between the loader module 9 and the transfer module 46.
- the transfer module 46 has a flexible and swivelable frame disposed therein.
- the substrate transfer unit 63 has a log-redder type substrate transfer unit 63.
- the substrate transfer unit 63 is a bifurcated transfer that supports a wafer W by being connected to the tip of the arm 64 and being able to expand and contract in a horizontal direction. Fork 65.
- the substrate transfer unit 63 transfers the wafer W between the process modules 47 to 50 and the load lock modules 51 and 52.
- Each process module 47 to 50 has a mounting table (not shown) on which a wafer W to be processed is mounted.
- the process modules 47 to 50 have the same configuration as the process chamber 12 in the substrate processing system 10.
- each component in the substrate processing system 45 is controlled by a system controller having the same configuration as the system controller in the substrate processing system 10.
- Each process chamber in the substrate processing system to which the film position adjusting method according to the present embodiment described above is applied is not limited to a vacuum processing chamber in which the wafer W is subjected to CVD processing, but a semiconductor device manufacturing process.
- any processing chamber that forms a film on the surface of the wafer W may be used.
- a processing chamber that performs heat treatment or PVD processing on the wafer W may be used.
- the substrate on which the film is formed on the surface in the substrate processing system 10 described above is not limited to a wafer for semiconductor devices, but can be used for various types of LCD (Liquid Crystal Display), FPD (Flat Panel Display), etc. It can be a substrate, photomask, CD substrate, printed circuit board, etc.
- a storage medium storing software program codes for realizing the various functions described above is supplied to the system controller, and the computer controller (such as a CPU or MPU) is stored in the storage medium.
- the computer controller such as a CPU or MPU
- the computer itself or a computer-controlled computing device performs the above-mentioned film position deviation calculation and wafer center position deviation calculation, and the computer This can be implemented by controlling each component (process, orienter, transfer device, etc.) of the substrate processing system 10 by the generated control signal.
- Storage media for supplying the program code include, for example, floppy (registered trademark) disks, hard disks, magneto-optical disks, CD-ROM, CD-R, CD-RW, D Optical disks such as VD-ROM, DVD-RAM, DVD-RW, DVD + RW, magnetic tape, nonvolatile memory card, ROM, etc. can be used.
- the program code may be downloaded via a network.
- the form of the program code may be in the form of an object code, a program code executed by an interpreter, script data supplied to the OS, and the like.
- the film position adjusting method according to the present invention can also be applied to a film forming apparatus that performs a CVD process in a state where a wafer (substrate) mounted on a mounting table is pressed by a clamp ring.
- the clamp ring itself is well known to those skilled in the art and will not be described in detail here. Since the clamp ring has an inner diameter slightly smaller than the outer diameter of the wafer, if CVD processing is performed with the wafer pressed by the clamp ring, the non-deformed structure shown in FIG. 6 is formed on the peripheral edge of the wafer covered with the clamp ring. A film part is formed.
- the film position shift as described with reference to FIG. 6 can be a problem, but this problem can also be solved by the film position adjustment method based on the present invention described above.
- step S44 the measurement accuracy of the width of the non-deposition portion by the image sensor 41 in step S44 described above may be reduced.
- the contrast between the film forming part and the non-film forming part in the image acquired by the image sensor 41 is high. It is preferable to execute step S42 described above under such conditions.
- a case where a (tungsten) film is formed by CVD will be described as an example.
- film formation is performed in a reaction-controlled state with excellent loading properties.
- the film position adjusting method according to the present invention is performed, the film forming process in step S42 described above is performed in a supply-controlled state with excellent selectivity. By doing so, the amount of film formation on the area covered with the clamping ring of the wafer can be drastically reduced, so that the contrast between the film forming part and the non-film forming part in the image acquired by the image sensor 41 is increased. can do.
- Switching between the reaction rate control state and the supply rate control state changes the supply ratio of WF gas and H gas.
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- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
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- Microelectronics & Electronic Packaging (AREA)
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN200780001371XA CN101356631B (zh) | 2006-04-26 | 2007-04-26 | 膜位置调整方法和基板处理系统 |
US12/298,570 US8318238B2 (en) | 2006-04-26 | 2007-04-26 | Film position adjusting method, memory medium and substrate processing system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006122436A JP4878202B2 (ja) | 2006-04-26 | 2006-04-26 | 膜位置調整方法、記憶媒体及び基板処理システム |
JP2006-122436 | 2006-04-26 |
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WO2007126016A1 true WO2007126016A1 (ja) | 2007-11-08 |
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PCT/JP2007/059098 WO2007126016A1 (ja) | 2006-04-26 | 2007-04-26 | 膜位置調整方法、記憶媒体及び基板処理システム |
Country Status (5)
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US (1) | US8318238B2 (ja) |
JP (1) | JP4878202B2 (ja) |
KR (1) | KR101026006B1 (ja) |
CN (1) | CN101356631B (ja) |
WO (1) | WO2007126016A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2213764A3 (en) * | 2009-01-30 | 2012-11-14 | Applied Materials, Inc. | Sensor system for semiconductor manufacturing apparatus |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20090026186A (ko) * | 2006-07-11 | 2009-03-11 | 도쿄엘렉트론가부시키가이샤 | 성막 방법, 클리닝 방법 및 성막 장치 |
CN103132016B (zh) * | 2013-02-22 | 2015-05-13 | 京东方科技集团股份有限公司 | 一种膜边调整器 |
JP6634275B2 (ja) * | 2015-12-04 | 2020-01-22 | 東京エレクトロン株式会社 | 成膜システム |
JP6617649B2 (ja) | 2016-06-20 | 2019-12-11 | 東京エレクトロン株式会社 | 被処理基板の載置位置の設定方法及び成膜システム |
KR102381239B1 (ko) * | 2016-12-12 | 2022-04-01 | 도쿄엘렉트론가부시키가이샤 | 기판 처리 장치, 기판 처리 방법 및 기억 매체 |
JP6847770B2 (ja) * | 2017-05-31 | 2021-03-24 | 株式会社Screenホールディングス | 基板処理装置および基板処理方法 |
CN109473365A (zh) * | 2017-09-08 | 2019-03-15 | 李亚玲 | Cvd沉膜偏移制程异常的测量与监控方法 |
KR20210017943A (ko) * | 2019-08-09 | 2021-02-17 | 캐논 톡키 가부시키가이샤 | 성막 시스템, 성막 시스템의 이상 개소 판별 방법, 컴퓨터 판독 가능 기록매체, 및 기록매체에 기록된 컴퓨터 프로그램 |
TWI772697B (zh) | 2019-10-23 | 2022-08-01 | 華邦電子股份有限公司 | 半導體製程的監控方法 |
CN112802772B (zh) * | 2019-11-13 | 2024-06-11 | 华邦电子股份有限公司 | 半导体工艺的监控方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07130721A (ja) * | 1993-10-29 | 1995-05-19 | Tokyo Electron Ltd | 処理装置 |
JPH07142459A (ja) * | 1993-11-12 | 1995-06-02 | Tokyo Electron Ltd | 処理システム |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2949528B2 (ja) * | 1991-03-13 | 1999-09-13 | 東京エレクトロン株式会社 | ウエハの中心位置検出方法及びその装置 |
US5565034A (en) * | 1993-10-29 | 1996-10-15 | Tokyo Electron Limited | Apparatus for processing substrates having a film formed on a surface of the substrate |
KR101015778B1 (ko) * | 2003-06-03 | 2011-02-22 | 도쿄엘렉트론가부시키가이샤 | 기판 처리장치 및 기판 수수 위치의 조정 방법 |
JP4376116B2 (ja) * | 2003-06-03 | 2009-12-02 | 東京エレクトロン株式会社 | 基板受け渡し位置の調整方法 |
US6934661B2 (en) * | 2003-12-16 | 2005-08-23 | Taiwan Semiconductor Manufacturing Co., Ltd. | Wafer edge detector |
-
2006
- 2006-04-26 JP JP2006122436A patent/JP4878202B2/ja active Active
-
2007
- 2007-04-26 CN CN200780001371XA patent/CN101356631B/zh not_active Expired - Fee Related
- 2007-04-26 WO PCT/JP2007/059098 patent/WO2007126016A1/ja active Application Filing
- 2007-04-26 KR KR1020087025939A patent/KR101026006B1/ko active IP Right Grant
- 2007-04-26 US US12/298,570 patent/US8318238B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07130721A (ja) * | 1993-10-29 | 1995-05-19 | Tokyo Electron Ltd | 処理装置 |
JPH07142459A (ja) * | 1993-11-12 | 1995-06-02 | Tokyo Electron Ltd | 処理システム |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2213764A3 (en) * | 2009-01-30 | 2012-11-14 | Applied Materials, Inc. | Sensor system for semiconductor manufacturing apparatus |
US9243319B2 (en) | 2009-01-30 | 2016-01-26 | Applied Materials, Inc. | Sensor system for semiconductor manufacturing apparatus |
US9892947B2 (en) | 2009-01-30 | 2018-02-13 | Applied Materials, Inc. | Sensor system for semiconductor manufacturing apparatus |
Also Published As
Publication number | Publication date |
---|---|
KR20080108565A (ko) | 2008-12-15 |
US20090087542A1 (en) | 2009-04-02 |
JP4878202B2 (ja) | 2012-02-15 |
JP2007294752A (ja) | 2007-11-08 |
CN101356631B (zh) | 2010-06-02 |
KR101026006B1 (ko) | 2011-03-30 |
CN101356631A (zh) | 2009-01-28 |
US8318238B2 (en) | 2012-11-27 |
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