WO2022270351A1 - 基板液処理装置及び基板液処理方法 - Google Patents
基板液処理装置及び基板液処理方法 Download PDFInfo
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- WO2022270351A1 WO2022270351A1 PCT/JP2022/023762 JP2022023762W WO2022270351A1 WO 2022270351 A1 WO2022270351 A1 WO 2022270351A1 JP 2022023762 W JP2022023762 W JP 2022023762W WO 2022270351 A1 WO2022270351 A1 WO 2022270351A1
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- Prior art keywords
- liquid
- liquid supply
- processing
- substrate
- supply nozzle
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- 239000007788 liquid Substances 0.000 title claims abstract description 738
- 239000000758 substrate Substances 0.000 title claims abstract description 200
- 238000000034 method Methods 0.000 title description 22
- 238000012545 processing Methods 0.000 claims description 337
- 230000002093 peripheral effect Effects 0.000 claims description 39
- 238000012544 monitoring process Methods 0.000 claims description 37
- 238000003672 processing method Methods 0.000 claims description 22
- 238000007599 discharging Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 abstract description 15
- 239000003595 mist Substances 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 201
- 238000010586 diagram Methods 0.000 description 26
- 239000007789 gas Substances 0.000 description 22
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- 235000012431 wafers Nutrition 0.000 description 10
- 230000007723 transport mechanism Effects 0.000 description 9
- 238000003860 storage Methods 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
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- 230000001965 increasing effect Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 238000005507 spraying Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
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Images
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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
- B05B12/087—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
- B05B12/1472—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet separate supply lines supplying different materials to separate outlets of the spraying apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/68—Arrangements for adjusting the position of spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
- B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02041—Cleaning
- H01L21/02043—Cleaning before device manufacture, i.e. Begin-Of-Line process
- H01L21/02052—Wet cleaning only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67028—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
- H01L21/6704—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing
- H01L21/67051—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing using mainly spraying means, e.g. nozzles
Definitions
- the present disclosure relates to a substrate liquid processing apparatus and a substrate liquid processing method.
- wafers semiconductor wafers
- Wafers are cleaned before and after various manufacturing processes to maintain a high degree of wafer cleanliness.
- particles can be effectively removed from the surface of the wafer by spraying a mixed fluid of gas and liquid onto the surface of the wafer.
- the substrate cleaning apparatus disclosed in Patent Document 1 discharges cleaning liquid such as two fluids toward the surface of the substrate while forming a liquid film on the surface of the substrate. This prevents the mist-like cleaning liquid rebounding inside the cup from directly adhering to the surface of the substrate, thereby suppressing adhesion of particles to the surface of the substrate.
- the processing liquid when a processing liquid such as a cleaning liquid is discharged toward the surface of a substrate (wafer) covered with liquid, the processing liquid may splash against the liquid on the substrate.
- the liquid splashed from the substrate by this splashing (that is, the splashed liquid containing the liquid and/or the processing liquid) may bounce off a peripheral member such as a cup positioned around the substrate and land on the substrate.
- the splashed liquid that lands on the substrate in this way can bring particles to the substrate.
- the processing liquid When the processing liquid is discharged toward the substrate surface, the amount of the liquid on the substrate surface is reduced to reduce the thickness of the liquid film. Particles tend to adhere to the substrate. Therefore, the adhesion of particles to the substrate can be more effectively suppressed by suppressing the occurrence of liquid splashing when the processing liquid is discharged toward the substrate surface covered with a sufficient amount of liquid.
- the present disclosure provides an advantageous technology for suppressing adhesion of particles to the substrate.
- a substrate holding portion that holds a substrate
- a rotation driving portion that rotates the substrate held by the substrate holding portion
- a liquid supply nozzle that discharges liquid toward a processing surface of the substrate
- an ejection section a treatment liquid ejection section having a treatment liquid supply nozzle for ejecting mist-like treatment liquid toward a processing surface
- a first drive section for moving the treatment liquid supply nozzle
- a treatment liquid ejection section and a first drive and a control unit for controlling the liquid ejection unit, wherein the control unit controls the liquid ejection unit to eject the liquid from the liquid supply nozzle toward the processing surface of the rotating substrate, and the processing liquid ejection unit.
- the present invention relates to a substrate liquid processing apparatus.
- FIG. 1 is a schematic diagram of an example of a processing system.
- FIG. 2 is a diagram schematically showing an example of a processing unit according to the first embodiment;
- FIG. 3 is a diagram showing an example of the substrate liquid processing method according to the first embodiment.
- FIG. 4 is a diagram showing an example of the substrate liquid processing method according to the first embodiment.
- FIG. 5 is a diagram showing an example of the substrate liquid processing method according to the first embodiment.
- FIG. 6 is a diagram showing an example of a substrate liquid processing method according to the first embodiment.
- FIG. 7 is a diagram showing an example of a substrate liquid processing method according to the first embodiment.
- FIG. 8 is a diagram showing an example of a substrate liquid processing method according to the first embodiment.
- FIG. 1 is a schematic diagram of an example of a processing system.
- FIG. 2 is a diagram schematically showing an example of a processing unit according to the first embodiment;
- FIG. 3 is a diagram showing an example of the substrate liquid processing method according to the
- FIG. 9A is a diagram showing an example of how the rinsing liquid and the cleaning liquid spread on the processing surface of the substrate.
- FIG. 9B is a diagram showing an example of the segmented area of the processing surface of the substrate.
- FIG. 10 is a diagram showing an example of driving the liquid supply nozzles for changing the landing position of the rinse liquid on the processing surface.
- FIG. 11 is a flowchart showing an example of changing the landing position of the rinse liquid on the processing surface using the monitoring result of the monitoring unit.
- FIG. 12 is a schematic diagram of an example of a processing unit according to the second embodiment.
- FIG. 13 is a diagram showing an example of a substrate liquid processing method according to the second embodiment.
- FIG. 14 is a diagram showing an example of a substrate liquid processing method according to the second embodiment.
- FIG. 15 is a diagram showing an example of a substrate liquid processing method according to the second embodiment.
- FIG. 16 is a diagram showing an example of a substrate liquid processing method according to the second embodiment.
- FIG. 17 is a diagram showing an example of a substrate liquid processing method according to the second embodiment.
- FIG. 18 is a diagram showing an example of a substrate liquid processing method according to the second embodiment.
- FIG. 1 is a diagram showing an outline of an example of the processing system 80.
- FIG. 1 is a diagram showing an outline of an example of the processing system 80.
- the processing system 80 shown in FIG. 1 has a loading/unloading station 91 and a processing station 92 .
- the loading/unloading station 91 includes a loading section 81 having a plurality of carriers C, and a transport section 82 provided with a first transport mechanism 83 and a delivery section 84 .
- Each carrier C accommodates a plurality of substrates W in a horizontal state.
- the processing station 92 is provided with a plurality of processing units 10 installed on both sides of the transport path 86 and a second transport mechanism 85 that reciprocates on the transport path 86 .
- the substrate W is picked up from the carrier C by the first transport mechanism 83 and placed on the delivery section 84 , and taken out from the delivery section 84 by the second transport mechanism 85 . Then, the substrate W is carried into the corresponding processing unit 10 by the second transport mechanism 85 and subjected to a predetermined liquid processing in the corresponding processing unit 10 . After that, the substrate W is taken out from the corresponding processing unit 10 by the second transport mechanism 85 and placed on the transfer section 84 , and then returned to the carrier C of the placing section 81 by the first transport mechanism 83 .
- the processing system 80 includes a control section 93 .
- the control unit 93 is configured by a computer, for example, and has an arithmetic processing unit and a storage unit.
- the storage unit of the control unit 93 stores programs and data for various processes performed by the processing system 80 .
- the arithmetic processing unit of the control unit 93 appropriately reads and executes programs stored in the storage unit, thereby controlling various mechanisms of the processing system 80 and performing various processes.
- the programs and data stored in the storage unit of the control unit 93 may have been recorded on a computer-readable storage medium and may have been installed from the storage medium into the storage unit.
- Examples of computer-readable storage media include hard disks (HD), flexible disks (FD), compact disks (CD), magnet optical disks (MO), and memory cards.
- Two or more of the plurality of processing units 10 in the processing system 80 described above may have the same configuration and perform the same processing, or may have different configurations and perform different processing.
- various liquid processing can be performed by applying various types of processing liquid (for example, chemical liquid, rinse liquid, and cleaning liquid) to the substrate W.
- processing liquid for example, chemical liquid, rinse liquid, and cleaning liquid
- FIG. 10 a plurality of types of liquid processing (for example, chemical liquid processing, rinsing processing, and cleaning processing) for substrates W may be performed in a single processing bath, or may be performed in separate processing baths. good.
- the cleaning process of the substrate W performed in one or more processing units 10 will be exemplified below.
- the substrate W is typically composed of a semiconductor wafer, a glass substrate, or the like, but is not limited thereto.
- FIG. 2 is a diagram schematically showing an example of the processing unit 10 according to the first embodiment.
- various elements inside the processing tank 21 are shown viewed from above.
- a processing unit 10 shown in FIG. 10 A processing unit 10 shown in FIG.
- the substrate holding part 22 holds the substrate W in the inner space of the processing bath 21 .
- the substrate holding part 22 shown in FIG. 2 holds the lower surface of the substrate W (especially the central portion) by suction.
- a specific method of holding the substrate W by the substrate holding part 22 is not limited.
- the substrate holding part 22 is provided so as to be rotatable about the rotation axis Ax together with the substrate W while holding the substrate W.
- the substrate holding portion 22 is rotated by a rotation driving portion 23 (see FIG. 3) configured by a motor or the like. That is, the rotation driving section 23 rotates the substrate W held by the substrate holding section 22 around the rotation axis Ax under the control of the control section 93 (see FIG. 1).
- the liquid discharger 32 has a liquid supply source 38a, a flow controller 38b, an on-off valve 38c, a supply line 38d and a liquid supply nozzle 33.
- the liquid supply source 38a feeds the rinse liquid Lr (for example, DIW (Deionized water)) to the supply line 38d.
- the flow controller 38b is provided in a portion of the supply line 38d between the liquid supply source 38a and the on-off valve 38c, and under the control of the controller 93, adjusts the flow rate of the rinse liquid Lr flowing through the supply line 38d.
- the on-off valve 38 c is provided in a portion of the supply line 38 d between the flow controller 38 b and the liquid supply nozzle 33 , and opens and closes the flow path of the supply line 38 d under the control of the control section 93 .
- the liquid supply nozzle 33 ejects the rinse liquid Lr supplied from the liquid supply source 38a through the supply line 38d.
- the cleaning liquid discharge unit 30 has a processing liquid supply source 36a, a flow rate controller 36b, an on-off valve 36c, a supply line 36d, a gas supply source 37a, a flow rate controller 37b, an on-off valve 37c, a supply line 37d, and a cleaning liquid supply nozzle 31.
- the processing liquid supply source 36a feeds the cleaning liquid (processing liquid; for example, DIW) Lp to the supply line 36d.
- the flow controller 36b is provided in a portion of the supply line 36d between the processing liquid supply source 36a and the on-off valve 36c, and under the control of the controller 93, adjusts the flow rate of the cleaning liquid Lp flowing through the supply line 36d.
- the on-off valve 36 c is provided in a portion of the supply line 36 d between the flow controller 36 b and the cleaning liquid supply nozzle 31 , and opens and closes the flow path of the supply line 36 d under the control of the control section 93 .
- the gas supply source 37a feeds gas (for example, inert gas such as nitrogen) to the supply line 37d.
- gas for example, inert gas such as nitrogen
- the flow controller 37b is provided in a portion of the supply line 37d between the gas supply source 37a and the on-off valve 37c, and under the control of the controller 93, adjusts the flow rate of the gas flowing through the supply line 37d.
- the on-off valve 37c is provided in a portion of the supply line 37d between the flow controller 37b and the cleaning liquid supply nozzle 31, and opens and closes the flow path of the supply line 37d under the control of the controller 93.
- the cleaning liquid supply nozzle 31 ejects the cleaning liquid Lp supplied from the processing liquid supply source 36a through the supply line 36d and the gas supplied from the gas supply source 37a through the supply line 37d.
- the cleaning liquid supply nozzle 31 of the present embodiment is configured as a two-fluid nozzle that ejects a gas (inert gas or the like) together with the cleaning liquid (processing liquid) Lp, and ejects the mist-like cleaning liquid Lp.
- the cleaning liquid supply nozzle 31 is movably supported by the first driving section 24 .
- the liquid supply nozzle 33 is movably supported by the second driving section 25 .
- the first drive section 24 has a first drive body section 24a and a first drive arm 24b.
- the second driving portion 25 has a second driving body portion 25a and a second driving arm 25b.
- the first drive body section 24a and the second drive body section 25a move along the guide rails 26 linearly extending in the horizontal direction (that is, the X-axis direction).
- the guide rail 26 is fixedly provided inside the processing tank 21 with respect to the processing tank 21 .
- Each of the first drive arm 24b and the second drive arm 25b is driven under the control of the control unit 93 in each of the horizontal direction (that is, the Y-axis direction perpendicular to the X-axis direction) and the height direction (that is, the Z-axis direction). , is provided so as to be linearly extendable.
- the first driving section 24 can move the cleaning liquid supply nozzle 31 in the X-axis direction, the Y-axis direction, and the Z-axis direction under the control of the control section 93 .
- the second drive unit 25 can move the liquid supply nozzle 33 in the X-axis direction, the Y-axis direction, and the Z-axis direction under the control of the control unit 93 .
- the control unit 93 performs cleaning processing of the substrate W by controlling the rotation driving unit 23, the cleaning liquid ejection unit 30, the liquid ejection unit 32, the first driving unit 24, and the second driving unit 25 as described above.
- the processing unit 10 shown in FIG. 2 further includes a cup structure 29 and a monitor 35 provided inside the processing bath 21 .
- the cup structure 29 is provided so as to horizontally surround the substrate W held by the substrate holding portion 22 .
- the cup structure 29 typically includes one or more cup bodies having an annular planar shape. Each cup has a cylindrical shape with an upper and a lower opening, and the substrate holder 22 and/or the substrate W held by the substrate holder 22 is placed inside each cup.
- the cup structure 29 receives the liquid (including the rinsing liquid Lr and the cleaning liquid Lp) splashed from the substrate W, and prevents the splashed liquid from leaking out of the processing tank 21 .
- the monitoring unit 35 monitors the state of the liquid film formed on the processing surface (that is, the upper surface) of the substrate W held by the substrate holding unit 22 under the control of the control unit 93 .
- a specific state of the liquid film monitored by the monitoring unit 35 is not limited.
- the monitoring unit 35 may monitor the thickness of the liquid film on the processing surface of the substrate W, for example.
- a monitoring result of the monitoring unit 35 is sent to the control unit 93 .
- the monitoring unit 35 may include one or more measuring instruments using a camera (imaging device) or laser.
- the monitoring unit 35 may be configured by a combination of a measuring instrument and an arithmetic processing unit (for example, the control unit 93) provided separately.
- measurement data is sent from the measuring device of the monitoring unit 35 to the control unit 93 functioning as an arithmetic processing unit. The state of the membrane may be obtained.
- the processing unit 10 may be equipped with other devices.
- the processing unit 10 can include a bottom surface cleaning unit (not shown) for cleaning the bottom surface of the substrate W held by the substrate holding part 22 .
- the bottom surface cleaning unit includes, for example, a cleaning body composed of a brush or sponge that is pressed against the bottom surface of the substrate W, a cleaning liquid discharge nozzle that discharges the cleaning liquid, and a bottom cleaning moving device that moves the cleaning body and the cleaning liquid discharge nozzle.
- the lower surface cleaning moving device moves the cleaning body and the cleaning liquid discharge nozzle, and the cleaning body is pressed against the lower surface of the substrate W while applying the cleaning liquid to clean the lower surface of the substrate W. can be done.
- one or a plurality of suction pads capable of holding a portion other than the central portion of the lower surface of the substrate W may be provided. While the substrate W is being held by the suction pads, the portion of the bottom surface of the substrate W with which the substrate holding portion 22 contacts (that is, the central portion) can be cleaned. On the other hand, while the substrate W is being held by the substrate holding part 22, the portion of the bottom surface of the substrate W which the suction pad contacts can be cleaned.
- a plurality of (for example, three) lifting pins may be provided around the substrate holding portion 22 .
- These elevating pins are provided so as to be movable up and down by an elevating mechanism (not shown).
- the substrate W can be transferred between these elevating pins and a transport mechanism (second transport mechanism 85 (see FIG. 1)) provided outside the processing unit 10 .
- the substrate W can be transferred between these elevating pins and the substrate holding section 22 or the suction pads described above.
- a treatment liquid ejection unit (not shown) may be provided that ejects another treatment liquid (for example, a chemical liquid) under the control of the control unit 93 and applies it to the substrate W.
- another treatment liquid for example, a chemical liquid
- the rinsing liquid Lr (liquid) is supplied to the center or near the center of the substrate W in order to cover the entire processing surface (upper surface) of the substrate W with the rinsing liquid Lr (liquid).
- the mist-like cleaning liquid Lp is also applied to the entire processing surface of the substrate W. Specifically, while rotating the substrate W, the cleaning liquid Lp is directly sprayed onto the entire processing surface by moving the spraying position of the cleaning liquid Lp on the processing surface in the radial direction of the processing surface.
- the cleaning liquid Lp when the cleaning liquid Lp is supplied to the center or near the center of the substrate W, the cleaning liquid Lp collides with the rinsing liquid Lr supplied to the center or near the center of the substrate W, and liquid splashing is likely to occur. Such splashing can bring particles to the substrate W and is preferably avoided as much as possible.
- the following countermeasures are effective in suppressing the above-described liquid splashing caused by the collision of the cleaning liquid Lp and the rinse liquid Lr.
- the amount of the rinsing liquid Lr applied to the processing surface of the substrate W and thinning the film of the rinsing liquid Lr on the processing surface splashing of the cleaning liquid Lp when applied onto the substrate W is suppressed. be able to.
- the amount of the rinsing liquid Lr on the processing surface of the substrate W becomes insufficient to prevent particles caused by the splashed liquid rebounded from a cup or the like, and as a result, defects ( Defect) may occur more easily.
- the amount of the rinsing liquid Lr on the processing surface of the substrate W becomes insufficient, and defects tend to occur on the processing surface of the substrate W.
- the mist liquid is swept up by the substrate W rotating at high speed, and the liquid tends to scatter from the substrate W. As shown in FIG. As a result, the splashed liquid rebounded by the cup or the like may adhere to the processing surface of the substrate W, making it easier for particles to adhere to the processing surface.
- the cleaning liquid Lp is discharged toward the substrate W together with the gas as in two-fluid cleaning, the occurrence of liquid splashing can be suppressed by reducing the flow rate of the gas.
- the performance of removing particles from the processing surface of the substrate W deteriorates.
- the substrate liquid processing method described below is performed by the controller 93 appropriately controlling each section of the processing system 80 (processing unit 10).
- 3 to 8 are diagrams showing an example of the substrate liquid processing method according to the first embodiment.
- the liquid supply nozzle 33 discharges the rinse liquid Lr toward the processing surface Ws of the substrate W held by the substrate holding part 22 (pre-rinse process).
- the liquid supply nozzle 33 directs the rinse liquid Lr toward an area including the center of the processing surface Ws (that is, the position through which the rotation axis Ax passes) and the vicinity of the center (that is, the first liquid supply area Ws1). to dispense.
- the rinse liquid Lr spreads over the entire processing surface Ws of the rotating substrate W, and the entire processing surface Ws is covered with the liquid film of the rinse liquid Lr.
- the main discharge direction of the rinse liquid Lr from the liquid supply nozzle 33 is the vertical direction (downward direction of the Z-axis). However, the ejection direction of all rinse liquids Lr ejected from the liquid supply nozzles 33 does not have to be strictly vertical. At least part of the rinse liquid Lr ejected from the liquid supply nozzle 33 may fly in a direction inclined with respect to the vertical direction.
- the first liquid supply area Ws1 where the rinse liquid Lr from the liquid supply nozzle 33 lands does not necessarily include the center of the processing surface Ws.
- the first liquid supply area Ws1 includes the center of the processing surface Ws. Even without it, it is possible to cover the entire processing surface Ws with the rinse liquid Lr.
- the substrate W is rotated by the rotation driving unit 23. 22 continuously around the rotation axis Ax.
- the cleaning liquid supply nozzle 31 directs the cleaning liquid toward the processing surface Ws.
- Lp is ejected (see FIG. 4).
- the main discharge direction of the cleaning liquid Lp from the cleaning liquid supply nozzle 31 is the vertical direction.
- the ejection direction of all the cleaning liquids Lp ejected from the cleaning liquid supply nozzles 31 does not have to be strictly vertical. At least part of the cleaning liquid Lp ejected from the cleaning liquid supply nozzle 31 may fly in a direction inclined with respect to the vertical direction.
- the rotation drive unit 23 rotates the substrate W at a rotation speed that sufficiently reduces the thickness of the liquid film on the outer peripheral portion of the processing surface Ws.
- the above-described atomization cleaning process is started from a portion of the processing surface Ws where the liquid film is sufficiently thin, and the occurrence of liquid splashing at the beginning of the atomization cleaning process can be suppressed.
- the cleaning liquid supply nozzle 31 of this example starts discharging the gas after starting to discharge the cleaning liquid Lp toward the outer peripheral portion of the processing surface Ws. That is, under the control of the control unit 93, after the flow path of the supply line 36d (see FIG. 2) is switched from the closed state to the open state by the on-off valve 36c, the flow path of the supply line 37d is opened from the closed state by the on-off valve 37c. Switched to the open state.
- the gas is started to be discharged from the cleaning liquid supply nozzle 31 while the cleaning liquid Lp is being discharged from the cleaning liquid supply nozzle 31 toward the outer peripheral portion of the processing surface Ws.
- the mist-like cleaning liquid Lp discharged from the cleaning liquid supply nozzle 31 together with the gas cleans the outer peripheral portion of the processing surface Ws.
- the cleaning liquid supply nozzle 31 ejects the cleaning liquid Lp and the gas from the outer peripheral side of the substrate W toward the central side. Move in the horizontal direction (X-axis direction).
- control unit 93 controls the liquid ejection unit 32 and the second driving unit 25 to direct the rinse liquid Lr from the liquid supply nozzle 33 toward the processing surface Ws (especially the first liquid supply area Ws1) of the rotating substrate W. Let it spit out. Further, the control unit 93 controls the cleaning liquid ejection unit 30 and the first driving unit 24 to cause the cleaning liquid Lp from the cleaning liquid supply nozzle 31 to flow onto the processing surface Ws on which the liquid film (including the rinse liquid Lr) is formed. The landing position is moved from the outer periphery of the processing surface Ws toward the center.
- the central portion referred to here can include not only the center of the processing surface Ws (the point through which the rotation axis Ax passes), but also the vicinity of the center. Therefore, the landing position of the cleaning liquid Lp on the processing surface Ws may move toward the center of the processing surface Ws or may move toward the vicinity of the center of the processing surface Ws.
- the cleaning liquid supply nozzle 31 moves from the outer peripheral side toward the center side of the substrate W, the cleaning liquid supply nozzle 31 does not necessarily have to move strictly toward the center of the processing surface Ws (that is, the rotation axis Ax). That is, the cleaning liquid supply nozzle 31 may move along the radial direction of the processing surface Ws having a circular planar shape, or may move not along the radial direction. However, it is preferable that the cleaning liquid supply nozzle 31 moves from the outer peripheral side toward the center side of the substrate W along a path that allows the cleaning liquid Lp to be directly sprayed onto the entire processing surface Ws of the rotating substrate W.
- the liquid supply nozzle 33 directs the landing position of the cleaning liquid Lp from the outer peripheral portion of the processing surface Ws to the first intermediate portion located between the outer peripheral portion and the central portion of the processing surface Ws. While moving, the rinsing liquid Lr is discharged toward the center of the processing surface Ws (see FIG. 4). That is, the control unit 93 controls the second driving unit 25 so that while the landing position of the cleaning liquid Lp is moving from the outer peripheral portion of the processing surface Ws toward the first intermediate portion, the first portion of the processing surface Ws is The rinse liquid Lr is discharged from the liquid supply nozzle 33 toward the liquid supply area Ws1.
- the liquid supply nozzle 33 moves the cleaning liquid Lp onto the processing surface Ws while the cleaning liquid Lp lands on the processing surface Ws from the first intermediate portion toward the center of the processing surface Ws.
- the rinsing liquid Lr is discharged toward a region other than the center of the (see FIG. 5). That is, the control unit 93 controls the second drive unit 25 so that while the landing position of the cleaning liquid Lp is moving from the first intermediate portion toward the central portion of the processing surface Ws, the second driving unit 25 of the processing surface Ws is moved.
- the rinse liquid Lr is discharged from the liquid supply nozzle 33 toward the liquid supply area Ws2.
- the distance of the second liquid supply area Ws2 from the center of the processing surface Ws (that is, the rotation axis Ax) is greater than the distance of the first liquid supply area Ws1 from the center of the processing surface Ws.
- the second driving unit 25 moves the liquid supply nozzle 33 in the horizontal direction, thereby changing the landing position of the rinse liquid Lr from the liquid supply nozzle 33 on the processing surface Ws. That is, by moving the liquid supply nozzle 33 by the second driving unit 25, the rinse liquid Lr from the liquid supply nozzle 33 is discharged toward the first liquid supply area Ws1 and the second liquid supply area Ws2. Switch between the state in which the liquid is discharged toward the target.
- the cleaning liquid Lp discharged from the cleaning liquid supply nozzle 31 and the rinse liquid Lr discharged from the liquid supply nozzle 33 continuously cover the entire processing surface Ws with a liquid film. Ws2 is determined.
- the moving speed of the cleaning liquid supply nozzle 31 toward the center of the processing surface Ws is reduced during the whole or part of the time when the landing position of the rinse liquid Lr from the liquid supply nozzle 33 is switched in this way. .
- the landing position of the rinse liquid Lr is switched, and splashing can be suppressed in a state in which the landing of the rinse liquid Lr on the processing surface Ws is unstable.
- the cleaning liquid supply nozzle 31 whose moving speed has been temporarily reduced in this manner moves toward the center of the processing surface Ws again at its original moving speed (that is, relatively high moving speed).
- the amount of the rinse liquid Lr discharged from the liquid supply nozzle 33 toward the second liquid supply area Ws2 per unit time is It is smaller than the amount per unit time of the rinse liquid Lr.
- the amount of the rinse liquid Lr in the vicinity of the landing position of the cleaning liquid Lp on the processing surface Ws is reduced, and splashing of the rinse liquid Lr and/or the cleaning liquid Lp can be suppressed.
- the number of revolutions of the substrate W in this example is higher than that while the landing position of the cleaning liquid Lp is moving from the outer peripheral portion toward the second intermediate portion located between the outer peripheral portion and the central portion of the processing surface Ws. It is higher while the landing position of the cleaning liquid Lp is moving from the second intermediate portion of Ws toward the central portion.
- the distance from the center (rotational axis Ax) of the processing surface Ws of the second intermediate portion referred to here may be the same as or different from the distance from the center of the processing surface Ws of the first intermediate portion described above. good too.
- the lower the number of revolutions of the substrate W the more the portion of the liquid film on the processing surface Ws with a greater thickness tends to be closer to the center side of the processing surface Ws (for example, the landing position side of the rinse liquid Lr and/or the cleaning liquid Lp). be.
- the rinse liquid Lr on the processing surface Ws may spread on the processing surface Ws so as to bypass the landing position of the cleaning liquid Lp on the processing surface Ws (described later). 9A). Therefore, while the landing position of the cleaning liquid Lp is moving from the second intermediate portion toward the central portion of the processing surface Ws as described above, the number of revolutions of the substrate W is relatively reduced to suppress liquid splashing. sell.
- the cleaning liquid supply nozzle 31 is turned back to the center of the processing surface Ws. from toward the outer periphery in the X-axis direction. Note that the cleaning liquid supply nozzle 31 may be folded back without being moved directly above the center of the processing surface Ws.
- the liquid supply nozzle 33 is moved by the second driving section 25, and the landing position of the rinse liquid Lr is shifted from the second liquid supply area Ws2 to the first liquid supply area Ws1.
- the distance from the center of the processing surface Ws of the third intermediate portion referred to here may be the same as or different from the distance from the center of the processing surface Ws of the first intermediate portion and/or the second intermediate portion. may be
- the cleaning liquid supply nozzle 31 is directed toward the outer peripheral portion of the processing surface Ws. may be reduced. This can suppress splashing of the rinse liquid Lr and/or the cleaning liquid Lp.
- the cleaning liquid supply nozzle 31, whose moving speed is temporarily reduced in this way, moves toward the outer peripheral portion of the processing surface Ws again at the original moving speed (that is, a relatively high moving speed).
- the number of revolutions of the substrate W is higher than that of the processing surface Ws while the landing position of the cleaning liquid Lp is moving from the center toward the fourth intermediate portion located between the outer peripheral portion and the center of the processing surface Ws. It may be lower while the landing position of the cleaning liquid Lp is moving from the fourth intermediate portion toward the outer peripheral portion.
- the distance from the center of the processing surface Ws of the fourth intermediate portion referred to here is the same as the distance from the center of the processing surface Ws of the first intermediate portion, the second intermediate portion and/or the third intermediate portion described above. may be different.
- the cleaning liquid supply nozzle 31 moves toward the outer periphery of the processing surface Ws until the cleaning liquid Lp from the cleaning liquid supply nozzle 31 lands on the processing surface Ws and reaches the outer peripheral portion (especially the edge) of the processing surface Ws. (See FIG. 8). At this time, the liquid supply nozzle 33 continues to discharge the rinse liquid Lr toward the first liquid supply area Ws1.
- the processing surface Ws of the substrate W can be cleaned while suppressing liquid splashing, and as a result, the generation of particles on the processing surface Ws can be reduced. can be effectively suppressed.
- FIG. 9A is a diagram showing an example of how the rinsing liquid Lr and the cleaning liquid Lp spread on the processing surface Ws of the substrate W.
- FIG. 9B is a diagram showing an example of the segmented regions R1 to R4 of the processing surface Ws of the substrate W. As shown in FIG.
- the processing surface Ws of the substrate W is divided into four regions R1 to R4 by linear X-axis and Y-axis that pass through the rotation center (rotational axis Ax) of the processing surface Ws and are perpendicular to each other.
- the landing position of the cleaning liquid Lp discharged from the cleaning liquid supply nozzle 31 on the processing surface Ws is moved from the outer periphery toward the center of the processing surface Ws in the direction in which the X axis extends.
- the cleaning liquid Lp lands on the outer periphery of the processing surface Ws. There is a landing position of the cleaning liquid Lp while being moved from toward the center.
- the second liquid supply area Ws2 exists in the other of the two regions divided by the Y axis on the processing surface Ws (see the first divided region R1 and the second divided region R2 shown in FIG. 9B), This is advantageous for efficiently cleaning the processing surface Ws while suppressing liquid splashing.
- the regions other than the center of the processing surface Ws are shifted to the positive side of the X axis, as shown in FIG. 9B. It repeatedly passes through the minus side of the Y axis, the minus side of the X axis, and the plus side of the Y axis.
- the second A liquid supply area Ws2 is preferably present in the region (see the second segmented region R2 and the third segmented region R3 shown in FIG. 9B) of the two regions segmented by the X axis on the processing surface Ws. In this case, it is advantageous for efficiently cleaning the processing surface Ws while suppressing liquid splashing.
- the landing position of the cleaning liquid Lp from the cleaning liquid supply nozzle 31 exists in the third segmented region R3 and/or the fourth segmented region R4 shown in FIG.
- the landing position of the liquid Lr is preferably present in the second segmented region R2.
- FIG. 10 is a diagram showing an example of driving the liquid supply nozzle 33 for changing the landing position of the rinse liquid Lr on the processing surface Ws.
- the horizontal position of the liquid supply nozzle 33 is changed by the second driving section 25 in order to change the landing position of the rinse liquid Lr on the processing surface Ws, but it is not limited to this.
- the second driving unit 25 adjusts the orientation of the liquid supply nozzle 33 (in particular, the orientation of the ejection port) to thereby supply the liquid.
- the ejection direction of the rinse liquid Lr from the nozzle 33 may be changed. That is, by changing the direction in which the rinse liquid Lr is ejected from the liquid supply nozzle 33 by the second driving unit 25, the rinse liquid Lr is ejected from the liquid supply nozzle 33 toward the first liquid supply area Ws1. It can be switched between the state of being discharged toward the two-liquid supply area Ws2.
- FIG. 11 is a flowchart showing an example of changing the landing position of the rinse liquid Lr on the processing surface Ws using the monitoring result of the monitoring unit 35.
- the control unit 93 may change the landing position of the rinse liquid Lr on the processing surface Ws according to the monitoring result of the monitoring unit 35 that monitors the state of the liquid film on the processing surface Ws.
- the liquid supply nozzle 33 starts discharging the rinse liquid Lr toward the first liquid supply area Ws1. (S2). Also, the cleaning liquid Lp is started to be discharged from the cleaning liquid supply nozzle 31 toward the processing surface Ws.
- the control unit 93 determines whether or not the liquid film on the processing surface Ws is in a state in which liquid splashing is likely to be induced (that is, a "liquid splashing induced state"). Determine (S3). For example, when a thick portion of the liquid film on the processing surface Ws is close to the landing position of the cleaning liquid Lp on the processing surface Ws, it can be determined that the liquid film on the processing surface Ws is in a liquid splashing induced state.
- control section 93 controls the second driving section 25 to cause the rinse liquid Lr from the liquid supply nozzle 33 to is changed from the first liquid supply area Ws1 to the second liquid supply area Ws2 (S4).
- control unit 93 determines whether or not the liquid film on the processing surface Ws has escaped from the liquid splashing induced state based on the monitoring result of the monitoring unit 35 (S5).
- the liquid supply nozzle 33 directs toward the second liquid supply area Ws2. The discharge of the rinsing liquid Lr is continued.
- the control section 93 controls the second driving section 25 to cause the rinse liquid from the liquid supply nozzle 33 to flow.
- the landing position of Lr is changed from the second liquid supply area Ws2 to the first liquid supply area Ws1 (S6).
- control unit 93 controls the cleaning liquid ejection unit 30 and the liquid ejection unit 32 to eject the cleaning liquid Lp from the cleaning liquid supply nozzle 31 and the liquid. Discharge of the rinse liquid Lr from the supply nozzle 33 is stopped (S8).
- control unit 93 can change the landing position of the rinse liquid Lr on the processing surface Ws by controlling the second driving unit 25 according to the monitoring result of the monitoring unit 35 to move the liquid supply nozzle 33. can. Accordingly, depending on the monitoring result of the monitoring unit 35, the state in which the rinse liquid Lr is discharged from the liquid supply nozzle 33 toward the first liquid supply area Ws1 and the state in which the rinse liquid Lr is discharged from the liquid supply nozzle 33 toward the second liquid supply area Ws2 The state in which the rinse liquid Lr liquid is discharged can be switched.
- the monitoring unit 35 may monitor other states.
- the monitoring unit 35 monitors the positions of the cleaning liquid supply nozzle 31 and the liquid supply nozzle 33, the state of the cleaning liquid Lp discharged from the cleaning liquid supply nozzle 31, and/or the state of the rinse liquid Lr discharged from the liquid supply nozzle 33.
- the control section 93 may perform various controls based on the positions of the cleaning liquid supply nozzle 31 and the liquid supply nozzle 33 monitored by the monitoring section 35 and the states of the cleaning liquid Lp and the rinse liquid Lr.
- control unit 93 controls the rotation driving unit 23 to rotate the substrate W based on the relative position between the thick portion of the liquid film on the processing surface Ws monitored by the monitoring unit 35 and the liquid supply nozzle 33. You can adjust the number. By adjusting the rotation speed of the substrate W in this way, the overall thickness of the liquid film on the processing surface Ws or the relative position between the thick portion of the liquid film and the liquid supply nozzle 33 is optimized. It is possible to suppress the generation of particles by suppressing liquid splashing.
- FIG. 12 is a diagram schematically showing an example of the processing unit 10 according to the second embodiment.
- various elements inside the processing tank 21 are shown viewed from above.
- the control unit 93 controls the second driving unit 25 to discharge the rinse liquid Lr from the liquid supply nozzle 33 toward the first liquid supply area Ws1, The state is switched between the state in which the liquid is discharged toward the liquid supply area Ws2.
- the controller 93 switches the nozzle for discharging the rinse liquid Lr, whereby the rinse liquid Lr from the liquid supply nozzle 33 is discharged toward the first liquid supply area Ws1, and the second liquid supply area Ws1 is discharged. 2 Switches between the state in which the liquid is discharged toward the liquid supply area Ws2.
- the liquid supply nozzle 33 of this embodiment includes a first liquid supply nozzle 33a, a second liquid supply nozzle 33b, and a flow path adjusting section 33c.
- the first liquid supply nozzle 33a discharges the rinse liquid Lr toward the first liquid supply area Ws1 of the processing surface Ws of the substrate W.
- the second liquid supply nozzle 33b ejects the rinse liquid Lr toward the second liquid supply area Ws2 of the processing surface Ws.
- the flow path adjustment section 33c adjusts the flow path that interconnects the first liquid supply nozzle 33a, the second liquid supply nozzle 33b, and the supply line 38d. That is, by adjusting the flow path, the flow path adjustment unit 33c supplies the rinse liquid Lr sent via the supply line 38d only to the first liquid supply nozzle 33a or only to the second liquid supply nozzle 33b. supply. By adjusting the flow path, the flow path adjusting unit 33c can supply the rinse liquid Lr sent through the supply line 38d to both the first liquid supply nozzle 33a and the second liquid supply nozzle 33b. good.
- the first liquid supply nozzle 33a and the second liquid supply nozzle 33b are provided integrally, but the first liquid supply nozzle 33a and the second liquid supply nozzle 33b are provided separately from each other. may
- the first liquid supply nozzle 33a and the second liquid supply nozzle 33b are provided movably by the second driving section 25, like the liquid supply nozzle 33 of the first embodiment described above.
- the first liquid supply nozzle 33 a and the second liquid supply nozzle 33 b may be fixedly provided with respect to the processing tank 21 .
- the first liquid supply nozzle 33a and the second liquid supply nozzle 33b may be fixed in the X-axis direction but movable in the Y-axis direction and/or the Z-axis direction.
- the rinse liquid Lr is supplied to the first liquid supply nozzle 33a and the second liquid supply nozzle 33b by the common liquid supply source 38a, flow controller 38b, on-off valve 38c and supply line 38d.
- a separate liquid supply source 38a, flow controller 38b, on-off valve 38c and/or supply line 38d may be assigned to each of the first liquid supply nozzle 33a and the second liquid supply nozzle 33b.
- FIG. 12 Other configurations of the processing unit 10 shown in FIG. 12 are the same as those of the processing unit 10 according to the first embodiment described above.
- the controller 93 controls the position of the cleaning liquid Lp from the cleaning liquid supply nozzle 31 to move from the outer peripheral portion of the processing surface Ws of the substrate W toward the first intermediate portion.
- the rinse liquid Lr is discharged from the liquid supply nozzle 33a.
- the controller 93 causes the second liquid supply nozzle 33b to discharge the rinse liquid Lr while the landing position of the cleaning liquid Lp is moving from the first intermediate portion toward the central portion of the processing surface Ws.
- FIG. 13 to 18 are diagrams showing an example of a substrate liquid processing method according to the second embodiment.
- the substrate liquid processing method described below is performed by the controller 93 appropriately controlling each section of the processing system 80 (processing unit 10).
- the first liquid supply nozzle 33a discharges the rinse liquid Lr toward the processing surface Ws (especially the first liquid supply area Ws1) of the substrate W held by the substrate holding section 22. (pre-rinse treatment). As a result, the rinse liquid Lr spreads over the entire processing surface Ws of the rotating substrate W, and the entire processing surface Ws is covered with the liquid film of the rinse liquid Lr.
- the first liquid supply nozzle 33a supplies the rinse liquid Lr to the processing surface Ws of the substrate W held and rotated by the substrate holder 22, while the cleaning liquid supply nozzle 31 A cleaning liquid Lp is discharged toward the processing surface Ws.
- the cleaning liquid supply nozzle 31 discharges the outer peripheral portion (especially the edge) of the processing surface Ws. discharge of the cleaning liquid Lp is started.
- the cleaning liquid supply nozzle 31 moves in the horizontal direction (X-axis direction) from the outer peripheral side of the substrate W toward the central side while ejecting the cleaning liquid Lp and the gas. That is, the control unit 93 controls the liquid ejection unit 32 to eject the rinse liquid Lr from the first liquid supply nozzle 33a toward the processing surface Ws of the rotating substrate W. As shown in FIG. Further, the control unit 93 controls the cleaning liquid ejection unit 30 and the first driving unit 24 to set the landing position of the cleaning liquid Lp from the cleaning liquid supply nozzle 31 on the processing surface Ws on which the liquid film is formed. Move from the outer periphery to the center.
- the liquid supply nozzle 33 moves toward the center of the processing surface Ws while the landing position of the cleaning liquid Lp is moving from the outer peripheral portion of the processing surface Ws toward the first intermediate portion (see FIG. 15).
- the rinse liquid Lr is discharged toward the part (see FIG. 14).
- the control unit 93 controls the flow path adjustment unit 33c to move the landing position of the cleaning liquid Lp from the outer peripheral portion of the processing surface Ws toward the first intermediate portion, while the first liquid supply nozzle 33a moves toward the first intermediate portion.
- the rinse liquid Lr is discharged toward the liquid supply area Ws1.
- the liquid supply nozzle 33 moves the cleaning liquid Lp onto the processing surface Ws while the cleaning liquid Lp lands on the processing surface Ws from the first intermediate portion toward the center of the processing surface Ws.
- the rinsing liquid Lr is discharged toward a region other than the central portion of (see FIG. 15). That is, the control unit 93 controls the flow path adjustment unit 33c to move the landing position of the cleaning liquid Lp from the first intermediate portion toward the central portion of the processing surface Ws, while the second liquid supply nozzle 33b moves toward the second liquid supply nozzle 33b.
- the rinse liquid Lr is discharged toward the liquid supply area Ws2.
- the landing position of the rinse liquid Lr on the processing surface Ws can be changed by switching the ejection of the rinse liquid Lr between the first liquid supply nozzle 33a and the second liquid supply nozzle 33b. That is, the flow path adjustment unit 33c adjusts the flow path so that the rinse liquid Lr is discharged toward the second liquid supply area Ws2 from a state in which the rinse liquid Lr is discharged toward the first liquid supply area Ws1. state can be switched.
- the moving speed of the cleaning liquid supply nozzle 31 toward the center of the processing surface Ws is reduced during the whole or part of the time during which the landing position of the rinse liquid Lr is switched in this way. Then, the cleaning liquid supply nozzle 31, whose movement speed is temporarily reduced in this way, moves toward the center of the processing surface Ws again at the original movement speed (that is, a relatively high movement speed).
- the flow rate of the rinse liquid Lr discharged from the first liquid supply nozzle 33a is greater than the flow rate of the rinse liquid Lr discharged from the second liquid supply nozzle 33b. Therefore, the amount of the rinse liquid Lr discharged from the second liquid supply nozzle 33b toward the second liquid supply area Ws2 per unit time is equal to the amount discharged from the first liquid supply nozzle 33a toward the first liquid supply area Ws1. It is less than the amount per unit time of the rinse liquid Lr.
- the number of revolutions of the substrate W in this example is higher than that while the landing position of the cleaning liquid Lp is moving from the outer peripheral portion toward the second intermediate portion located between the outer peripheral portion and the central portion of the processing surface Ws. It is higher while the landing position of the cleaning liquid Lp is moving from the second intermediate portion of Ws toward the central portion.
- the moving speed of the cleaning liquid supply nozzle 31 toward the outer peripheral portion of the processing surface Ws is reduced.
- the number of revolutions of the substrate W is higher than that of the processing surface Ws while the landing position of the cleaning liquid Lp is moving from the center toward the fourth intermediate portion located between the outer peripheral portion and the center of the processing surface Ws. It may be lower while the landing position of the cleaning liquid Lp is moving from the fourth intermediate portion toward the outer peripheral portion.
- the cleaning liquid supply nozzle 31 moves toward the outer periphery of the processing surface Ws until the cleaning liquid Lp from the cleaning liquid supply nozzle 31 lands on the processing surface Ws and reaches the outer peripheral portion (especially the edge) of the processing surface Ws. (See FIG. 18).
- the processing surface Ws of the substrate W can be cleaned while suppressing liquid splashing, and as a result, the generation of particles on the processing surface Ws can be effectively suppressed. can be effectively suppressed.
- the cleaning liquid supply nozzle 31 and/or the liquid supply nozzle 33 move linearly in the horizontal direction, but the cleaning liquid supply nozzle 31 and/or the liquid supply nozzle 33 may move non-linearly.
- the cleaning liquid supply nozzle 31 and/or the liquid supply nozzle 33 may be attached to a drive arm that swings in the horizontal plane about a drive axis that extends in the height direction. In this case, the cleaning liquid supply nozzle 31 and/or the liquid supply nozzle 33 move along an arc around the drive axis in accordance with the swinging of the drive arm.
- the cleaning liquid supply nozzle 31 is configured as a two-fluid nozzle, but it may be configured as a one-fluid nozzle that ejects the cleaning liquid (processing liquid) Lp without ejecting gas.
- the cleaning liquid Lp is used as the processing liquid, but it is possible to appropriately apply the above-described techniques (apparatus and method) to cases where processing liquids other than the cleaning liquid are used. Similarly, the above-described techniques (apparatus and method) can be appropriately applied to cases where other liquids are used instead of the rinse liquid Lr (eg, DIW).
- the rinse liquid Lr eg, DIW
- the technical category that embodies the above technical idea is not limited.
- the substrate liquid processing apparatus described above may be applied to other apparatuses.
- the above technical ideas may be embodied by a computer program for causing a computer to execute one or more procedures (steps) included in the substrate liquid processing method (including the substrate cleaning method).
- the above technical idea may be embodied by a computer-readable non-transitory recording medium in which such a computer program is recorded.
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Abstract
Description
図2は、第1実施形態に係る処理ユニット10の一例の概略を示す図である。図2において、処理槽21の内側の各種要素は、上方から見た状態が示される。
本実施形態において、上述の第1実施形態と同一又は対応の要素には同一の符号を付し、その詳細な説明は省略する。
上述の例では、洗浄液供給ノズル31及び/又は液体供給ノズル33が水平方向に直線的に移動するが、洗浄液供給ノズル31及び/又は液体供給ノズル33は非直線的に移動してもよい。例えば、制御部93の制御下で、高さ方向に延びる駆動軸線を中心に水平面において揺動する駆動アームに、洗浄液供給ノズル31及び/又は液体供給ノズル33が取り付けられてもよい。この場合、洗浄液供給ノズル31及び/又は液体供給ノズル33は、駆動アームの揺動に応じて、駆動軸線を中心とした円弧に沿って移動する。
Claims (14)
- 基板を保持する基板保持部と、
前記基板保持部に保持されている前記基板を回転させる回転駆動部と、
前記基板の処理面に向けて液体を吐出する液体供給ノズルを有する液体吐出部と、
前記処理面に向けて、ミスト状の処理液を吐出する処理液供給ノズルを有する処理液吐出部と、
前記処理液供給ノズルを動かす第1駆動部と、
前記処理液吐出部、前記第1駆動部及び前記液体吐出部を制御する制御部と、を備え、 前記制御部は、前記液体吐出部を制御して、回転する前記基板の前記処理面に向けて前記液体供給ノズルから前記液体を吐出させつつ、前記処理液吐出部及び前記第1駆動部を制御して、前記処理液供給ノズルからの前記処理液の、前記液体を含む液膜が形成されている前記処理面上における着地位置を、前記処理面の外周部から中心部に向けて動かす
基板液処理装置。 - 前記処理液供給ノズルは、前記処理液とともにガスを吐出する請求項1に記載の基板液処理装置。
- 前記処理液供給ノズルは、前記処理面の前記外周部に向けて前記処理液の吐出を開始した後に、前記ガスの吐出を開始する請求項2に記載の基板液処理装置。
- 前記液体供給ノズルは、前記制御部の制御下で、
前記処理液の前記着地位置が、前記処理面の前記外周部から、前記処理面の前記外周部と前記中心部との間に位置する第1中間部に向けて動いている間、前記処理面の第1液体供給エリアに向けて前記液体を吐出し、
前記処理液の前記着地位置が、前記第1中間部から前記中心部に向けて動いている間、前記処理面の第2液体供給エリアに向けて前記液体を吐出し、
前記処理面の中心からの前記第2液体供給エリアの距離は、前記処理面の中心からの前記第1液体供給エリアの距離よりも大きい請求項1~3のいずれか一項に記載の基板液処理装置。 - 前記液体供給ノズルを動かす第2駆動部を備え、
前記制御部は、前記第2駆動部を制御することで、前記第1液体供給エリアに向けて前記液体供給ノズルから前記液体を吐出させる状態と、前記第2液体供給エリアに向けて前記液体供給ノズルから前記液体を吐出させる状態とを切り換える請求項4に記載の基板液処理装置。 - 前記第2駆動部が前記液体供給ノズルを移動させることで、前記第1液体供給エリアに向けて前記液体供給ノズルから前記液体が吐出される状態と、前記第2液体供給エリアに向けて前記液体供給ノズルから前記液体が吐出される状態とを切り換える請求項5に記載の基板液処理装置。
- 前記第2駆動部が前記液体供給ノズルからの前記液体の吐出方向を変えることで、前記第1液体供給エリアに向けて前記液体供給ノズルから前記液体が吐出される状態と、前記第2液体供給エリアに向けて前記液体供給ノズルから前記液体が吐出される状態とを切り換える請求項5に記載の基板液処理装置。
- 前記液体供給ノズルは、
前記処理面のうちの第1液体供給エリアに向けて前記液体を吐出する第1液体供給ノズルと、
前記処理面のうちの第2液体供給エリアに向けて前記液体を吐出する第2液体供給ノズルと、を含み、
前記制御部は、
前記処理液の前記着地位置が前記処理面の前記外周部から前記第1中間部に向けて動いている間、前記第1液体供給ノズルから前記液体を吐出させ、
前記処理液の前記着地位置が前記処理面の前記第1中間部から前記中心部に向けて動いている間、前記第2液体供給ノズルから前記液体を吐出させる請求項4に記載の基板液処理装置。 - 前記第1液体供給ノズルから吐出される前記液体の流量は、前記第2液体供給ノズルから吐出される前記液体の流量よりも多い請求項8に記載の基板液処理装置。
- 前記処理面は、前記処理面の回転中心を通り且つ相互に直交する直線状のX軸及びY軸によって4つの領域に区分され、
前記処理液供給ノズルから吐出された前記処理液の前記処理面上における前記着地位置は、前記X軸が延びる方向へ、前記処理面の前記外周部から前記中心部に向けて動かされ、
前記処理面のうち前記Y軸によって区分される2つの領域のうち、一方において、前記処理液の前記着地位置が前記処理面の前記外周部から前記中心部に向けて動かされる間の前記処理液の前記着地位置があり、他方において、前記第2液体供給エリアがある請求項4~9のいずれか一項に記載の基板液処理装置。 - 前記回転駆動部によって前記基板が回転させられることで、前記処理面のうち中心以外の領域は、前記X軸のプラス側、前記Y軸のマイナス側、前記X軸のマイナス側、及び前記Y軸のプラス側を、順次繰り返し通過し、
前記処理面のうち前記X軸によって区分される2つの領域のうち、前記Y軸のマイナス側が位置する領域において、前記第2液体供給エリアがある請求項10に記載の基板液処理装置。 - 前記処理面上に形成される前記液膜の状態を監視する監視部を備え、
前記制御部は、前記監視部の監視結果に応じて、前記第1液体供給エリアに向けて前記液体供給ノズルから前記液体が吐出される状態と、前記第2液体供給エリアに向けて前記液体供給ノズルから前記液体が吐出される状態とを切り換える請求項4~11のいずれか一項に記載の基板液処理装置。 - 前記基板の回転数は、前記処理面の前記外周部と前記中心部との間に位置する第2中間部に向けて前記外周部から前記処理液の前記着地位置が動いている間よりも、前記処理面の前記第2中間部から前記中心部に向けて前記処理液の前記着地位置が動いている間の方が高い請求項1~12のいずれか一項に記載の基板液処理装置。
- 回転している基板の処理面に向けて液体供給ノズルから液体を吐出させつつ、処理液供給ノズルから前記処理面に向けてミスト状の処理液を吐出することで、前記液体を含む液膜が形成されている前記処理面上における前記処理液の着地位置を、前記処理面の外周部から中心部に向けて動かす工程を含む、
基板液処理方法。
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