WO2004064134A1 - 基板処理システム、基板処理装置、プログラムおよび記録媒体 - Google Patents
基板処理システム、基板処理装置、プログラムおよび記録媒体 Download PDFInfo
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- WO2004064134A1 WO2004064134A1 PCT/JP2003/016679 JP0316679W WO2004064134A1 WO 2004064134 A1 WO2004064134 A1 WO 2004064134A1 JP 0316679 W JP0316679 W JP 0316679W WO 2004064134 A1 WO2004064134 A1 WO 2004064134A1
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- Prior art keywords
- substrate
- liquid
- substrate processing
- processing apparatus
- etching
- Prior art date
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- 239000000758 substrate Substances 0.000 title claims abstract description 499
- 239000007788 liquid Substances 0.000 claims abstract description 306
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- 238000004140 cleaning Methods 0.000 claims description 105
- 238000003892 spreading Methods 0.000 claims description 67
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- 238000001514 detection method Methods 0.000 claims description 32
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 22
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 claims description 17
- 238000012544 monitoring process Methods 0.000 claims description 5
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- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
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- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- H01L21/67253—Process monitoring, e.g. flow or thickness monitoring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
- C03C23/0075—Cleaning of glass
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/50—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges
- G11B23/505—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers
Definitions
- the present invention relates to a rotating semiconductor substrate, a glass substrate for a liquid crystal display device, a glass substrate for a photomask, a substrate for an optical disk, and the like (hereinafter simply referred to as “substrate”).
- substrate a substrate processing apparatus that discharges a processing liquid to perform predetermined processing, and a network communication technique in which a computer that collects data of the substrate processing apparatus is connected via a network.
- BACKGROUND ART Products such as semiconductors and liquid crystal displays are manufactured by subjecting a substrate to a series of processes such as cleaning, resist coating, exposure, development, etching, formation of an interlayer insulating film, and heat treatment.
- these processes are performed in a substrate processing apparatus incorporating a plurality of processing units.
- the transport port provided in the substrate processing apparatus sequentially transports the substrate to each processing unit, and each processing unit performs a predetermined process on the substrate, so that the substrate is subjected to a series of processes. is there.
- each of the above-described processing units and transport robots has been provided with various sensors for monitoring the movement and processing conditions of the processing units.
- a technique for detecting the above is disclosed in Japanese Patent Publication No. Hei 11-31117.
- Various sensors individually monitor different targets, and when any of the different targets deviates from a predetermined range, the corresponding sensor transmits an abnormality detection signal and a processing abnormality is detected. .
- the processing result may be abnormal in a combination of a plurality of control elements.
- a processing abnormality since no abnormality detection signal is transmitted from each sensor, a processing abnormality had to be detected in the inspection process after a series of substrate processing was completed.
- processing that does not cause any problem as a whole is detected as a processing error, or even if a processing error occurs, it cannot be detected as an abnormality. It was difficult to detect processing abnormalities with high accuracy by monitoring the operation of each processing unit.
- the present invention relates to a substrate processing apparatus in which a substrate processing apparatus that performs a predetermined processing by discharging a processing liquid onto a rotating substrate and a computer that collects data from the substrate processing apparatus are connected via a network.
- the system is targeted.
- the substrate processing system includes: a collecting unit that monitors and collects a plurality of control elements in a specific step in a processing process when the predetermined processing is performed in the substrate processing apparatus; Abnormality detecting means for detecting a processing abnormality in the substrate processing apparatus based on the plurality of control elements obtained.
- a plurality of control elements in a specific process in a processing process when a predetermined processing is performed in the substrate processing apparatus are monitored and collected, and a processing abnormality in the substrate processing apparatus is determined based on the collected plurality of control elements. Since it is detected, processing abnormalities can be detected quickly and with high accuracy.
- the substrate processing apparatus comprises: An apparatus for cleaning the substrate by discharging pure water after discharging, wherein the collecting means monitors and collects a plurality of control elements in a cleaning liquid spreading step of discharging and spreading the cleaning liquid onto a rotating substrate.
- the abnormality detecting means may perform the cleaning process based on a combination of two or more of the substrate rotation speed, the cleaning solution temperature, the cleaning solution flow rate, the cleaning solution concentration, and the cleaning solution discharge time among the plurality of control elements in the cleaning solution spreading step. Detects abnormal processing.
- the present invention is also directed to a substrate processing apparatus that performs a predetermined process by discharging a processing liquid onto a rotating substrate.
- FIG. 5 is a diagram illustrating an example of a processing procedure in the substrate processing system of the first embodiment.
- a data collection controller 4 is interposed in a maintenance management network 7 that connects each of the three substrate processing apparatuses 3 to the maintenance management server 2.
- three data collection controllers 4 are connected in a one-to-one correspondence with the three substrate processing apparatuses 3, and the three data collection controllers 4 are connected to the one data collection controller 4.
- the host computer 1 is connected to the maintenance management server 2 via a predetermined line.
- the program executed by the host computer 1 is different from the program executed by the maintenance management server 2, and the CPU of the host computer 1 executes the arithmetic processing according to the dedicated program to be the host computer 1. All operations, for example, process management of the substrate processing apparatus 3 are performed.
- a reading device for reading various data from a recording medium such as an optical disk, a magnetic disk, and a magneto-optical disk may be connected to the bus line 49.
- the overnight collection controller 4 can read the program from the recording medium via the reading device and store it on the magnetic disk 44.
- a program can be downloaded from another server or the like and stored in the magnetic disk 44.
- the CPU 41 executes arithmetic processing in accordance with the program stored in the magnetic disk 44, so that various operations as the data collection controller 4 are performed. That is, the data collection controller 4 operates as the data collection controller 4 as a result of the CPU 41 executing the arithmetic processing according to this program.
- the data collection unit 4 41 and the abnormality detection unit 4 42 shown in FIG. 1 are processing units realized in the data collection controller 4 when the CPU 1 executes the program, and the operation contents are described. Will be described later.
- the transfer section 35 moves in the direction in which the carriers C are arranged in the carry-in section 31 and the carry-out section 33, and carries in and out the substrate W to and from the carrier C.
- the table has 39.
- the loading / unloading mechanism 37 is provided with a loading / unloading arm (not shown) .In addition to the horizontal movement, the loading / unloading mechanism 37 also has a rotating operation centered on a vertical direction and a lifting / lowering operation along the vertical direction. An advance / retreat operation can be performed. As a result, the loading / unloading mechanism 37 transfers the substrate W to / from the carrier C and transfers the substrate W to / from the delivery table 39.
- FIG. 4 is a diagram showing a configuration of the removal unit SR.
- the removal unit SR includes a substrate holding unit 61 that rotates while holding one substrate W in a horizontal state, a force trap 62 that surrounds the periphery of the held substrate W, and a substrate W that is held. Removal liquid supply section 63 for supplying the removal liquid, pure water supply section 64 for supplying pure water to the held substrate W, and chamber 6 for accommodating the substrate W held in the substrate holding section 61 And 5.
- the chamber 65 is provided with a shirt 59 (see FIG. 3).
- the shirt 59 is shown when the transport robot TR1 loads or unloads the substrate W into or from the chamber 65. It is opened by the opening / closing mechanism that is omitted, and is closed at other times.
- the inside of the chamber 65 is always under normal pressure.
- the atmosphere in the chamber 65 is exhausted to an exhaust duct outside the device by an exhaust mechanism (not shown). This prevents the atmosphere containing the mist vapor of the processing liquid from leaking from the chamber 65.
- the substrate holder 61 is a motor provided outside the chamber 65, and a chuck that rotates about an axis arranged along the vertical direction by being rotationally driven by the motor 66. 6 and 7.
- the motor 66 has a motor speed sensor 30a for detecting the rotational speed of the motor 66 and a motor torque sensor 30b for detecting the rotational torque.
- an encoder can be applied as the speed sensor 30a, and various known torque meters can be applied as the torque sensor 30b.
- the removal solution used here is a polymer removal solution that selectively removes only a polymer, for example, an organic amine-based removal solution containing an organic amine such as dimethyl sulfoxide and dimethylformamide, and an ammonium fluoride containing ammonium fluoride.
- An inorganic or inorganic remover is used. Then, the flow rate and temperature of the removing liquid sent to the removing liquid nozzle 75 are measured by the flow meter 30 c and the thermometer 30 d. It is detected each time.
- the pure water supply unit 64 includes a motor 78 provided outside the chamber 65, an arm 79 that rotates by the rotation of the motor 78, and a pure water supply Pure water nozzle 8 1, a pure water source 8 2 that supplies pure water to the pure water nozzle 8 1, and a pump 8 3 that supplies pure water from the pure water source 8 2 to the pure water nozzle 8 1
- a conduit is connected between the pure water nozzle 81 and the pure water source 82, and a pure water valve 84 is interposed in the conduit.
- a flow meter 30e is interposed in the middle of the pipeline. The flow meter 30e detects the flow rate of pure water passing through the pipeline.
- An elevating means (not shown) for elevating and lowering the motor 78 to elevate and lower the pure water nozzle 81 is provided. Further, by driving the motor 78, the pure water nozzle 81 reciprocates between a discharge position above the rotation center of the substrate W and a standby position outside the cup 62.
- substrate processing in the substrate processing apparatus 3 is started according to an instruction from the host computer 1 (step S 1).
- the substrate processing of the first embodiment is a polymer removal processing.
- the host computer 1 instructs the substrate processing apparatus 3 to start processing, and passes a flow recipe describing a processing procedure and conditions to the substrate processing apparatus 3.
- the outline of the processing in the substrate processing apparatus 3 is as follows, and is mainly composed of a removing liquid discharging step, a pure water discharging step, and a drying step.
- the removing liquid discharging step includes a step of first discharging the removing liquid and spreading it on the substrate W, and a step of continuously discharging the removing liquid thereafter.
- an unprocessed substrate W (in most cases, a substrate after dry etching) is loaded into the loading section 31 by, for example, an AGV while being accommodated in the carrier C.
- the substrate W is dry-etched using the patterned resist film as a mask, and a polymer which is a reaction product derived from the resist film and the insulating film is attached.
- One substrate W is taken out of the carrier C of the loading section 31 by the loading / unloading mechanism 37 and placed on the transfer table 39.
- the substrate W placed on the delivery table 39 is taken out by the transfer robot TR 1 and is carried into one of the four removal units SR.
- the removal unit SR the shirt 59 is opened and the substrate W transported by the transport robot TR 1 is received and held by the chuck 67. Then, while closing the shirt 59, the cup 62 is raised to a position surrounding the periphery of the substrate W held by the chuck 67, and the drain valve 72 is opened.
- step S2 the removing liquid discharging / spreading step
- the substrate W is rotated at a relatively high speed while discharging the removing liquid onto the substrate W to spread the substrate W.
- Remover removal The removal liquid nozzle 75 at the standby position is pivotally moved to the discharge position by overnight. Then, the removing liquid is discharged from the removing liquid nozzle 75 to the substrate W by operating the pump 77 and opening the removing liquid valve 88.
- step S2 of FIG. 5 after the removal liquid discharge and spreading process for a certain substrate W is started in the substrate processing apparatus 3, the control elements for the substrate W from the substrate processing apparatus 3 to the data collection controller 4 are controlled. Start data transmission. Specifically, for example, when the removal liquid discharging and spreading process is performed on the substrate W, the motor speed sensor 30a detects the rotation speed of the motor 66 at predetermined intervals. The data of the detection result is transmitted to the data collection controller 4 via the maintenance management network 7 one by one.
- the removal liquid discharge time is collected by measuring the time during which the removal liquid valve 88 is continuously opened after the discharge of the removal liquid is started by using the timer 45.
- the timing to start removing the removal liquid is determined by detecting the open signal of the removal liquid valve 8 8 Alternatively, the timing may be a timing at which the flow meter 30c detects a removal liquid flow rate equal to or more than a predetermined value.
- a signal indicating whether or not the removal liquid valve 88 has been opened is also transmitted to the collection controller 4 via the maintenance management network 7.
- the abnormality detection unit 442 does not determine each control element independently, but rather combines a plurality of control elements in the removing liquid discharging and spreading step, more specifically, the substrate rotation speed and the removing liquid. Processing abnormality is detected by comprehensively judging from the combination of temperature, removal liquid flow rate and removal liquid discharge time. For example, even if the timing of the start of the removal liquid discharge is later than the time t1 and the removal liquid discharge time in the removal liquid discharge and spreading step is shorter than the reference data file STD, the removal liquid in the removal liquid discharge and spread step When the flow rate is higher than the standard data file STD, it is considered that as a result, the same amount of the removal liquid as the reference value was supplied to the substrate W.
- processing errors may be determined based on the accumulation of each.
- step S3 is the removing liquid discharging continuation step (step S3), which is the removing liquid discharging step after the removing liquid is spread over the entire surface of the substrate W.
- the removal liquid supplied to the surface of the substrate W is dropped out of the substrate W by centrifugal force, collected by the cap 62, passed through the drain pipe 69, and discharged to the drain 70.
- the removing liquid discharging continuation step the removing liquid supplied to the substrate W acts on the polymer on the substrate W, so that the polymer on the substrate W is easily separated from the substrate W. Therefore, the polymer is gradually removed from the substrate W by the action of the removing liquid and the rotation of the substrate W.
- the control elements are not collected by the data collection controller 4.
- step S3 the removing liquid discharge continuation step of step S3 is completed, the pump 77 is stopped, the removing liquid valve 88 is closed, and the removing liquid nozzle 75 is returned to the standby position. Then, the rotation speed of the substrate W is increased again.
- the substrate processing After the pure water discharge processing for a certain substrate W is started in the device 3, the data transmission of the control element for the substrate W from the substrate processing apparatus 3 to the data collection controller 4 is performed. Specifically, when the pure water discharge process is being executed, the motor speed sensor 30a, the motor torque sensor 30b, and the flow meter 30e rotate the motor 66 at regular intervals. The speed, torque, and flow rate of pure water supplied to the pure water nozzle 81 are detected, and the results of the detection are sent to the data collection controller 4 via the maintenance management network 7 one by one. Sent.
- the pure water discharge time is collected by measuring the time during which the pure water valve 84 has been continuously opened since the start of pure water discharge by using a timer 45.
- the timing of starting the pure water discharge may be the timing of detecting the open signal of the pure water valve 84 or the timing at which the flow meter 30e detects the flow rate of the pure water equal to or more than a predetermined value.
- a signal indicating whether or not the pure water valve 84 has been opened is also transmitted to the collection controller 4 via the maintenance management network 7.
- the data collection unit 4 4 1 (see FIG. 1) of the data collection controller 4 collects data of each control element during the execution of the pure water discharge process (step S 9). . Then, based on the collected data of each control element, the abnormality detecting section 442 detects a processing abnormality in the substrate processing apparatus 3 (Step S10). Specifically, as in the case of the above-described removal liquid discharging and spreading step, the reference data stored in advance on the magnetic disk 44 and recorded with the reference values of the control elements when the polymer removal processing is performed well is performed. The CPU 41 of the data collection controller 4 compares the overnight file STD with the data of the control elements collected in step S9, and detects a processing error.
- the abnormality detection unit 4 42 does not determine each control element independently, but rather combines a plurality of control elements in the pure water discharge process, more specifically, the substrate rotation speed and the pure water flow rate. Processing abnormality is detected by comprehensively judging from the combination of the pure water discharge time. For example, even if the pure water discharge start timing is later than time t5 and the pure water discharge time in the pure water discharge process is shorter than the standard file STD, the pure water flow rate in the pure water discharge process is If the value is larger than the data file STD, it is considered that as a result, the same amount of pure water as the reference value was supplied to the substrate W.
- step S5 a drying step is executed.
- This process is a so-called spin-drying process, in which the liquid on the substrate W is shaken off by a strong centrifugal force when the substrate W rotates at high speed. As a result, the substrate W is spin-dried, and a series of polymer removal processing is completed.
- the control elements are not collected by the overnight collection controller 4.
- the number of rotations of the substrate W in the removing liquid discharge continuation step (Step S 3) is the smallest, and then the number of rotations in the pure water discharging step (Step S 4) and the removing liquid discharge spreading step (Step S 2) The number of rotations increases in the order of rotation speed in the drying process and rotation speed in the drying process (step S5).
- control elements for polymer removal processing are not determined individually and independently, but processing errors are comprehensively detected based on multiple control elements. Even if an element deviates from the reference value, processing that does not cause a problem as a whole is detected as a processing error, and conversely, even if a processing error occurs as a whole, it cannot be detected as a processing error. Detection accuracy can be improved. That is, in order to accurately determine whether or not the processing is abnormal, it is important to consider all of the various factors, and as in the present embodiment, the processing abnormality is determined from a combination of a plurality of control elements. If it is detected, high-precision processing error detection can be performed.
- the removal liquid discharge time in the removal liquid discharging and spreading step is shorter than the reference value
- the removal liquid flow rate is larger than the reference value
- the removal liquid amount approximately equal to the reference value will result. It is regarded as being supplied to the substrate W, and no processing abnormality has occurred.
- the individual control elements deviate more than a predetermined value from the reference value in a combination of a plurality of control elements, if the influences of the deviations are mutually compensated, do not detect them as processing abnormalities. By doing so, it is possible to detect processing abnormalities with high accuracy.
- the substrate rotation speed and the removal liquid Process errors are detected by comprehensively judging from the combination of temperature, removal liquid flow rate, and removal liquid discharge time, and in the pure water discharge step, the substrate rotation speed, pure water flow rate, and pure water discharge time are comprehensively determined. Judgment has detected a processing error. As described above, by detecting the processing abnormality of the polymer removal processing from the combination of the important control elements of the important steps that greatly affect the processing result, it is possible to detect the processing abnormality with higher accuracy.
- a processing error is determined by comprehensively determining from all combinations of the substrate rotation speed, the removing liquid temperature, the removing liquid flow rate, and the removing liquid discharging time as control elements. It is more preferable to detect the abnormal condition. However, even when at least two or more control elements are monitored to detect the abnormal condition, it is possible to detect the process abnormality with higher accuracy than the conventional method.
- a process abnormality is detected by comprehensively judging from all combinations of the substrate rotation speed, the pure water flow rate, and the pure water discharge time as control elements. Although it is more preferable, even if at least two or more control elements are monitored to detect an abnormality, it is possible to perform processing abnormality detection with higher accuracy than in the past. .
- the overall configuration of the substrate processing system of the second embodiment is substantially the same as that of the first embodiment (see FIG. 1).
- the second embodiment differs from the first embodiment in that a substrate processing apparatus 3A that performs wet etching of the substrate surface with an etchant is used instead of the substrate processing apparatus 3 that performs the polymer removal processing.
- the remaining configuration in the substrate processing system of the second embodiment that is, the host convenience 1, the maintenance management server 2, the data collection controller 4, and the manner of connecting them to the network are the same as those of the first embodiment. Is omitted.
- FIG. 7 is a block diagram illustrating a configuration of the substrate processing system according to the second embodiment. Note that, in and after FIG. 7, the same components as those in the first embodiment are denoted by the same reference numerals.
- the substrate processing apparatus 3A according to the second embodiment uses an etching solution This is a device that performs substrate cleaning treatment by slice-etching the substrate or etching metal contaminants attached to the substrate surface.
- FIG. 8 is a plan view of the substrate processing apparatus 3A.
- the substrate processing apparatus 3A has a loading / unloading section ID and an etching processing section CM arranged side by side.
- the carry-in / carry-out section ID is the same as that of the substrate processing apparatus 3 of the first embodiment, and therefore, is denoted by the same reference numerals and detailed description thereof is omitted.
- the transport robot TR1 travels along the longitudinal direction of the transport path TP1 (the direction in which the rows of the etching units MP are formed), and transfers the substrate W to and from each of the four etching units MP.
- the board W is transferred to the transfer table 39.
- FIG. 9 is a diagram showing a configuration of the etching unit MP.
- the etching unit MP includes a substrate holding portion 61 that rotates while holding one substrate W in a horizontal state, a cup 62 that surrounds the held substrate W, and a substrate that holds the substrate W.
- a chamber 65 for accommodating the substrate W in a state.
- the substrate holder 61 is a motor provided outside the chamber 65, and a chuck that is rotated about the axis arranged along the vertical direction by being rotationally driven by the motor 66. 6 and 7. Further, the motor 66 is provided with a motor speed sensor 30a for detecting the rotation speed of the motor 66 and a motor torque sensor 3Ob for detecting the rotation torque.
- a motor speed sensor 30a for detecting the rotation speed of the motor 66
- a motor torque sensor 3Ob for detecting the rotation torque.
- an encoder can be used as the motor speed sensor 30a
- various known torque meters can be used as the motor torque sensor 30b.
- the chuck 67 is a so-called vacuum chuck that can hold the substrate W in a substantially horizontal posture by vacuum suction.
- the chuck 66 rotates the chuck 67 while the chuck 67 holds the substrate W, the substrate W also rotates in a horizontal plane about an axis along the vertical direction. Then, the rotation speed and torque of the motor 66 during the rotation of the substrate W are detected by the motor speed sensor 30a and the motor torque sensor 30b, respectively.
- the chuck 67 is not limited to a so-called vacuum chuck, but may be a so-called mechanical chuck that holds the substrate W by mechanically gripping an edge portion.
- the cup 62 has a substantially doughnut-like shape in a top view, and has an opening at the center thereof through which the chuck 67 can pass.
- the cup 62 collects liquid scattered from the rotating substrate W (for example, etching liquid ⁇ pure water), and discharges the collected liquid from a drain port 68 provided at a lower portion.
- a drain pipe 69 is connected to the drain port 68. In the middle of the drain pipe 69, a waste state in which the drain port 68 and the drain 70 are communicated, or in a circulation state in which the drain port 68 and a recycling pipe 110 described later are communicated.
- a three-way valve 111 for switching the drain pipe 69 in the state is provided. The cup 62 is moved up and down by a mechanism (not shown).
- the etching liquid supply unit 63 includes a motor 73 provided outside the chamber 65, an arm 74 that is rotated by the rotation of the motor 3, and an etching liquid that is provided at the tip of the arm 74 to lower the etching liquid.
- a motor 73 provided outside the chamber 65
- an arm 74 that is rotated by the rotation of the motor 3
- an etching liquid that is provided at the tip of the arm 74 to lower the etching liquid.
- a flow meter 30c, a thermometer 30d, and a concentration meter 30f are interposed in the middle of the pipeline.
- the flow meter 30c, the thermometer 30d, and the concentration meter 3Of detect the flow rate, the temperature, and the concentration of the etching solution passing through the pipeline, respectively.
- the weighing tank 100 is configured to be supplied with a stock solution from a stock solution supply source 101 storing a stock solution of an etching solution, and to be supplied with pure water from a pure water source 82. That is, a pipe line for supplying a stock solution is connected between the weighing tank 100 and the stock solution supply source 101, and the stock solution supply valve 103 and a stock solution for feeding the stock solution are connected to the pipeline. The liquid supply pump 102 is interposed. Further, a pipe for supplying pure water is connected between the weighing tank 100 and the pure water source 82, and pure water is supplied from the pure water source 82 to the weighing tank 100 in the pipe. A pure water feed pump 104 for the weighing tank for feeding and a pure water supply valve 105 for the weighing tank are interposed.
- a recycle pipe 110 is connected between the weighing tank 100 and the above three-way valve 111.
- a circulation pump 1 12 and a filter 1 13 for purifying the collected etching liquid are inserted in the recycle pipe 110.
- lifting means for raising and lowering the nozzle 73 to raise and lower the etching solution nozzle 175 is provided. Further, by driving the motor 73, the etching liquid nozzles 1.5 reciprocate between a discharge position above the rotation center of the substrate W and a standby position outside the cup 62.
- the etching unit MP rotates the substrate W and discharges an etchant onto the substrate W to corrode the natural oxide film and metal contaminants, and then discharges pure water to perform etching.
- the substrate W can be cleaned by rinsing the liquid.
- sensor 30 is a generic term for motor speed sensor 30a, motor torque sensor 30b, flow meter 30c, thermometer 30d, flow meter 30e, and concentration meter 30f.
- sensor 30 when it is not necessary to distinguish them from each other, they are simply referred to as a sensor 30.
- substrate processing in the substrate processing apparatus 3A is started according to an instruction from the host computer 1 (step S11).
- the substrate processing of the second embodiment is an etching processing.
- the host computer 1 instructs the substrate processing apparatus 3A to start processing, and passes a flow recipe describing a processing procedure and conditions to the substrate processing apparatus 3A.
- the outline of the processing in the substrate processing apparatus 3A is as follows, and is mainly composed of an etching liquid discharging step, a pure water discharging step, and a drying step. Further, the etching liquid discharging step includes a step of first discharging the etching liquid to spread it on the substrate W, and a step of continuously discharging the etching liquid thereafter.
- the unprocessed substrate W is carried into the carry-in section 31 by, for example, an AGV in a state of being accommodated in the carrier C. Then, one substrate W is taken out from the carrier C of the loading section 31 by the loading / unloading mechanism 37 and placed on the delivery table 39. The substrate W placed on the delivery table 39 is taken out by the transport robot TR1, and is carried into one of the four etching processing units MP. In the etching processing unit MP, the shirt 59 is opened, and the substrate W transported by the transport robot TR1 is received and held by the chuck 67.
- step S12 an etching solution discharge / spreading process
- Etching liquid discharge ⁇ In the spreading process, the etching liquid nozzles 1 to 5 at the standby position are rotated by the motor 73 to the discharging position. Then, by operating the pump 77 and opening the etching liquid valve 188, the etching liquid is discharged from the etching liquid nozzle 175 to the substrate W. The etching solution supplied to the surface of the substrate W is spread over the entire surface by centrifugal force, falls outside the substrate W, is collected by the cup 62, passes through the drain pipe 69, and is discharged to the drain 70. Is done.
- a plurality of control elements are monitored and collected by the overnight collection controller 4.
- control element is a controllable element that affects the processing result.
- the number of rotations of the substrate W that is, the number of rotations of the module 66
- the etching solution nozzle and the like are used.
- the flow rate, the temperature and the concentration of the etching liquid sent toward the block 175, the discharge time of the etching liquid from the start of the discharge, and the like are equivalent.
- step S12 of FIG. 10 after the etching liquid discharge and spreading process for the substrate W in the substrate processing apparatus 3A in the substrate processing apparatus 3A is started, the data is transmitted from the substrate processing apparatus 3 ⁇ to the data collection controller 4.
- the control element data transmission for the substrate W is started. Specifically, for example, when the etching liquid discharge spreading process is performed for the substrate W, the motor speed sensor 30a detects the rotation speed of the motor 66 at predetermined intervals. Then, the data of the detection result is transmitted to the data collection controller 4 via the maintenance management network 7 one by one.
- Control elements other than the etching liquid discharge time are exactly the same.
- the torque sensor 30b, the flow meter 30c, and the thermometer 30d are used.
- the concentration meter 30f detect the torque of the module 66 at regular intervals, the flow rate, temperature, and concentration of the etching solution sent to the etching solution nozzle 175, and the detection results Is transmitted to the data collection controller 4 via the maintenance management network 7 one by one. The shorter the interval at which control elements are detected, the more detailed control elements that can respond to changes over time can be obtained.However, the amount of data to be handled increases and the burden on communication also increases. Then, the interval may be set.
- Step S17 the abnormality detecting section 442 detects a processing abnormality in the substrate processing apparatus 3A based on the collected data of each control element (step S18). Specifically, a reference file STD in which a reference value of a control element when the magnetic disk 44 has been properly etched is stored in advance, and the control data collected in step S17 is stored. The CPU 41 of the data collection controller 4 compares the element data with the reference data file STD to detect a processing abnormality. At this time, the abnormality detection unit 442 does not judge the individual control elements independently, but rather combines a plurality of control elements in the etching liquid discharge spreading step, more specifically, the substrate rotation speed and the etching.
- the data collection controller 4 may transmit the occurrence of a processing error to the maintenance management server 2 or the host computer 1 or may generate an alarm.
- the processing in the substrate processing apparatus 3A may be interrupted.
- the rotation speed of the substrate W is reduced, and the substrate W is rotated at a constant rotation speed from time t3 to time t4. Rotate.
- the etching liquid is continuously discharged from the etching liquid nozzle 1775, the discharge flow rate from time t2 to time t4 is as described above. Less than the etching solution discharging and spreading step.
- the three-way valve 111 is switched to a circulating state so that the etching liquid discharged from the drainage port 68 is collected in the weighing tank 100. I have.
- step S13 The processing from time t2 to time t4 is the etching liquid discharge continuation step (step S13), which is the etching liquid discharge step after the etching liquid is spread over the entire surface of the substrate W.
- the etching liquid supplied to the surface of the substrate W falls out of the substrate W by centrifugal force, is collected by the power pump 62, and is discharged to the drain pipe 69.
- the used etchant discharged into the drain pipe 69 is returned from the three-way valve 111 through the recycling pipe 110 to the weighing tank 100 by the circulation pump 112, and the new etchant is used. It is mixed and recycled again. At this time, the used etching solution is returned to the weighing tank 100 after being purified by the filter 113.
- the etching solution discharge continuation process from time t2 to time t4 the etching solution becomes fatigued due to the dissolution of oxides and metals. If a large amount of a natural oxide film or metal contaminants adhere to the substrate W and the degree of fatigue of the etching solution is large, the etching solution may not be collected between time t2 and time t4. .
- step S14 a plurality of control elements are monitored and collected by the data collection controller 4.
- the number of rotations of the substrate W that is, the number of rotations of the motor 66
- the flow rate of pure water supplied to the pure water nozzle 81 and the pure water discharge time from the start of pure water discharge Etc. are collected as control elements.
- the data collection section 4 41 of the data collection controller 4 collects data of each control element when the pure water discharge process is being executed (Step S). 1 9). Then, based on the collected data of each control element, the abnormality detecting section 442 detects a processing abnormality in the substrate processing apparatus 3A (step S20). More specifically, as in the case of the above-described etching solution discharging and spreading step, the reference data stored in advance on the magnetic disk 44 and recorded with the reference values of the control elements when the etching process is performed well is performed. The CPU 41 of the data collection controller 4 compares the evening file STD with the data of the control elements collected in step S19 to detect a processing abnormality.
- the abnormality detection unit 4 42 does not determine each control element independently, but rather combines a plurality of control elements in the pure water discharge process, more specifically, the substrate rotation speed and the pure water flow rate. Processing abnormality is detected by comprehensively judging from the combination of the pure water discharge time. For example, even if the pure water discharge start timing is later than the time t5 and the pure water discharge time in the pure water discharge process is shorter than the standard data file STD, the pure water flow rate in the pure water discharge process is If the value is larger than the data file STD, it is considered that as a result, the same amount of pure water as the reference value was supplied to the substrate W. Therefore, in such a case, the processing error is determined by comprehensively judging from the combination of multiple control elements. Not always.
- step S14 when the pure water discharge step of step S14 is completed at time t6 without detecting a processing abnormality, the pump 83 is stopped, the pure water valve 84 is closed, and the pure water nozzle 81 is stopped. To the standby position. Then, the number of rotations of the substrate W is further increased.
- step S15 ends, and the rotation speed of the substrate W is reduced.
- the motor stop 66 stops, and the cup 62 descends from the peripheral position of the substrate W, and the shirt 59 is opened.
- the transport robot TR 1 takes out the substrate W after the etching process from the etching process unit MP, and places it on the transfer table 39 of the loading / unloading unit ID.
- the substrate W placed on the delivery table 39 is taken out by the carrying-in / out mechanism 37 and carried into the carrier C placed on the carrying-out section 33.
- the process returns from step S 16 to step S 12 again, and An etching process is performed on the stored new substrate W.
- the etching process and the control element de-emission check are performed on all the substrates W stored in the carrier C carried into the carry-in section 31 in the manner described above. According to the above, instead of independently determining the control elements when performing the etching process, the processing abnormality is comprehensively detected based on a plurality of control elements.
- Detection accuracy can be improved. That is, in order to accurately determine whether or not the processing is abnormal, it is important to consider all of the various factors, and as in the present embodiment, the processing abnormality is determined from a combination of a plurality of control elements. If it is detected, it is possible to detect processing abnormalities with high accuracy.
- the second embodiment for example, even if the etchant concentration in the etchant discharge spreading step is lower than the reference value, if the etchant discharge time is longer than the reference value, as a result, the same corrosive action as the reference value will result. Is regarded as having been applied to the substrate W and is not regarded as a processing abnormality. In this way, in a combination of a plurality of control elements, even if each control element deviates more than a predetermined value from the reference value, if the influence of the deviation mutually compensates, it is not detected as a processing abnormality. This makes it possible to perform highly accurate processing abnormality detection.
- process abnormalities are detected by comprehensively judging from all combinations of substrate rotation speed, etching solution temperature, etchant flow rate, etchant concentration and etchant discharge time as control elements.
- process abnormalities are detected by comprehensively judging from all combinations of substrate rotation speed, etching solution temperature, etchant flow rate, etchant concentration and etchant discharge time as control elements.
- the pure water discharging step it is more necessary to comprehensively judge from all combinations of the substrate rotation speed, the pure water flow rate and the pure water discharging time as a control element to detect the processing abnormality.
- a control element it is more necessary to comprehensively judge from all combinations of the substrate rotation speed, the pure water flow rate and the pure water discharging time as a control element to detect the processing abnormality.
- the data collection unit 441 and the abnormality detection unit 442 are provided in the data collection controller 4. 2 may be provided.
- FIG. 12 is a block diagram showing another example of the configuration of the substrate processing apparatus according to the present invention.
- the same components as those in FIG. 2 are denoted by the same reference numerals.
- the CD-ROM drive 308 reads the processing program from the CD-ROM 91 in which a program in which the above-described processing (collection of control elements, detection of processing abnormality, etc.) is described is recorded.
- the program read from the CD-ROM 91 by the CD-ROM drive 308 is installed in the substrate processing apparatus 3B and executed by the CPU 301, whereby the CPU 301 is used as the data collection unit in each of the above embodiments. 44 1.
- the substrate processing apparatus 3B performs the processing described later, functioning in the same manner as the abnormality detection unit 442.
- the above-mentioned program may be downloaded and installed from the host computer 1 via a network, for example. Further, instead of the CD-ROM drive 308, a drive for another recording medium such as a DVD drive may be used.
- the substrate processing apparatus 3B of FIG. 12 performs the series of processes described in the first embodiment. A process almost the same as that shown in Figs. 5 and 6 is executed in the device. That is, the processing procedure of the polymer removal processing in the substrate processing apparatus 3B is exactly the same as that described with reference to FIG. Then, the removing liquid discharging and spreading step (step S 2) and the pure water discharging step
- step S4 the CPU 310 collects data of a plurality of control elements, and detects a processing abnormality in the substrate processing apparatus 3B based on the collected data of each control element.
- a process abnormality is detected by comprehensively judging from a combination of the substrate rotational speed, the removing liquid temperature, the removing liquid flow rate, and the removing liquid discharging time, and in the pure water discharging step, the substrate rotating speed
- the processing abnormality is detected by comprehensively judging from the combination of the pure water flow rate and the pure water discharge time.
- a processing abnormality is detected by comprehensively judging from all combinations of the substrate rotation speed, the removing liquid temperature, the removing liquid flow rate, and the removing liquid discharging time as control elements.
- the substrate rotation speed the removing liquid temperature
- the removing liquid flow rate the removing liquid discharging time
- the pure water discharge step it is more preferable to comprehensively judge from all combinations of the substrate rotation speed, the pure water flow rate, and the pure water discharge time as a control element to detect the processing abnormality. Therefore, even when two or more control elements are monitored to detect an abnormality, it is possible to perform processing abnormality detection with higher accuracy than before. Even in this case, as in the first embodiment, even if each control element deviates from the reference value, processing that does not cause any problem is detected as a processing error, or conversely, a processing error occurs as a whole. This eliminates the problem that it cannot be detected as an error even if the error is detected, improving the accuracy of processing error detection and quickly detecting processing errors.
- Step S 1 2 and the pure water discharge process Data of a plurality of control elements is collected, and a processing abnormality in the substrate processing apparatus 3B is detected based on the collected data of each control element.
- the processing abnormality is detected by comprehensively judging from the combination of the substrate rotation speed, the etching liquid temperature, the etching liquid flow rate, the etching liquid concentration and the removing liquid discharging time.
- processing abnormalities are detected by comprehensively judging from the combination of substrate rotation speed, pure water flow rate and pure water discharge time.
- the processing abnormality is comprehensively determined from all combinations of the substrate rotation speed, the etching liquid temperature, the etching liquid flow rate, the etching liquid concentration, and the etching liquid discharging time as control elements.
- the processing abnormality is comprehensively determined from all combinations of the substrate rotation speed, the etching liquid temperature, the etching liquid flow rate, the etching liquid concentration, and the etching liquid discharging time as control elements.
- it is more preferable to detect the abnormality even if at least two or more control elements are monitored to detect an abnormality, it is possible to detect a processing abnormality with higher accuracy than in the past.
- the pure water discharge step it is more preferable to comprehensively judge from all combinations of the substrate rotation speed, the pure water flow rate, and the pure water discharge time as a control element to detect the processing abnormality. Therefore, even when an abnormality is detected by monitoring two or more control elements, it is possible to detect a processing abnormality with higher accuracy than before.
- the technology according to the present invention is not only a polymer removing process and a etching process, but also connects a substrate processing apparatus that discharges some processing liquid to a rotating substrate to perform a predetermined processing, and a data processing controller 4 with the substrate processing apparatus. It can be applied to general systems. In particular, in the case of a device for performing a cleaning process on a rotating substrate by discharging pure water after discharging the cleaning solution, a process of discharging the cleaning solution to spread and a process of discharging pure water determine a processing result. Since this is an important step, the effect of applying the present invention is great.
- a substrate processing apparatus that performs a predetermined process by discharging a processing liquid such as a cleaning liquid, pure water, or photoresist onto a rotating substrate
- a processing liquid such as a cleaning liquid, pure water, or photoresist
- a plurality of control elements in a process of discharging the processing liquid are collected and collected.
- the object to be processed in the substrate processing apparatus is not limited to a semiconductor substrate, and may be an apparatus for processing a glass substrate for a liquid crystal display device, a glass substrate for a photomask, a substrate for an optical disk, and the like. .
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US10/541,507 US8052834B2 (en) | 2003-01-09 | 2003-12-25 | Substrate treating system, substrate treating device, program, and recording medium |
JP2004566299A JP4064402B2 (ja) | 2003-01-09 | 2003-12-25 | 基板処理システムおよび基板処理装置 |
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- 2003-12-25 WO PCT/JP2003/016679 patent/WO2004064134A1/ja active Application Filing
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JP2006245446A (ja) * | 2005-03-07 | 2006-09-14 | Future Vision:Kk | レジスト剥離除去装置 |
JP4542448B2 (ja) * | 2005-03-07 | 2010-09-15 | 株式会社フューチャービジョン | レジスト剥離除去装置 |
KR100668103B1 (ko) * | 2006-01-17 | 2007-01-11 | (주)스마트에이시스템 | 반도체 세정 장비의 모니터링 방법 |
JP2008252007A (ja) * | 2007-03-30 | 2008-10-16 | Dainippon Screen Mfg Co Ltd | 基板処理装置 |
JP2010109347A (ja) * | 2008-10-03 | 2010-05-13 | Dainippon Screen Mfg Co Ltd | 基板処理装置および異常処理方法 |
JP2011100926A (ja) * | 2009-11-09 | 2011-05-19 | Toray Eng Co Ltd | 基板処理システム |
JP2012151237A (ja) * | 2011-01-18 | 2012-08-09 | Tokyo Electron Ltd | 液処理装置 |
JP2015133449A (ja) * | 2014-01-15 | 2015-07-23 | 株式会社荏原製作所 | 基板処理装置の異常検出装置、及び基板処理装置 |
WO2019054236A1 (ja) * | 2017-09-15 | 2019-03-21 | 株式会社日立国際電気 | 運行システム |
JP2019165241A (ja) * | 2019-05-16 | 2019-09-26 | 東京エレクトロン株式会社 | 処理装置、処理方法および記憶媒体 |
WO2023140005A1 (ja) * | 2022-01-19 | 2023-07-27 | 株式会社Screenホールディングス | 支援装置、支援方法および支援プログラム |
Also Published As
Publication number | Publication date |
---|---|
KR20050100605A (ko) | 2005-10-19 |
JPWO2004064134A1 (ja) | 2006-05-18 |
JP4064402B2 (ja) | 2008-03-19 |
KR100704246B1 (ko) | 2007-04-06 |
US20060151112A1 (en) | 2006-07-13 |
US8052834B2 (en) | 2011-11-08 |
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