WO2014156754A1 - 基板処理装置及び基板処理方法 - Google Patents
基板処理装置及び基板処理方法 Download PDFInfo
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- WO2014156754A1 WO2014156754A1 PCT/JP2014/057088 JP2014057088W WO2014156754A1 WO 2014156754 A1 WO2014156754 A1 WO 2014156754A1 JP 2014057088 W JP2014057088 W JP 2014057088W WO 2014156754 A1 WO2014156754 A1 WO 2014156754A1
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- substrate
- processing
- heater
- temperature
- liquid
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- 239000000758 substrate Substances 0.000 title claims abstract description 278
- 238000003672 processing method Methods 0.000 title claims description 10
- 239000007788 liquid Substances 0.000 claims abstract description 161
- 238000011282 treatment Methods 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 25
- 238000000926 separation method Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 description 20
- 230000002093 peripheral effect Effects 0.000 description 13
- 238000004140 cleaning Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 238000011418 maintenance treatment Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1259—Multistep manufacturing methods
- H01L27/1296—Multistep manufacturing methods adapted to increase the uniformity of device parameters
-
- 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
-
- 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
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- 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
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
-
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67109—Apparatus for thermal treatment mainly by convection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67115—Apparatus for thermal treatment mainly by radiation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67248—Temperature monitoring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68764—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by a movable susceptor, stage or support, others than those only rotating on their own vertical axis, e.g. susceptors on a rotating caroussel
Definitions
- Embodiments described herein relate generally to a substrate processing apparatus and a substrate processing method.
- the substrate processing apparatus is an apparatus for processing a substrate surface by supplying a processing liquid (for example, a resist stripping solution or a cleaning liquid) to the surface of the substrate such as a wafer or a liquid crystal substrate in a manufacturing process of a semiconductor or a liquid crystal panel.
- a processing liquid for example, a resist stripping solution or a cleaning liquid
- a substrate is rotated in a horizontal state, a processing liquid is supplied to the substrate surface from a nozzle facing the vicinity of the center of the substrate surface, and the processing liquid is spread on the substrate surface by centrifugal force due to rotation. There is something to do.
- the processing liquid is heated in advance by a heater, and the chuck for holding the substrate is heated by the heater to warm the substrate, and then the heated processing liquid is applied to the substrate surface.
- a substrate processing apparatus to be supplied has been proposed (see, for example, Patent Document 1).
- the substrate processing apparatus that heats the substrate by heating the chuck with the heater, it is possible to maintain the temperature of the processing liquid while keeping the substrate temperature constant, but even if the heater temperature (heating temperature) is changed. Since the temperature of the processing liquid does not change immediately, it is difficult to perform substrate processing by adjusting (controlling) the temperature of the processing liquid during the processing.
- the substrate processing has two steps of switching from the high temperature processing to the low temperature processing
- the processing is interrupted until the substrate temperature falls from the high temperature to the predetermined temperature, and thus the processing is continued.
- This process (the same recipe) is not executed, and the processing time is increased accordingly. For this reason, it is required to quickly adjust the temperature of the processing solution during the substrate processing.
- the problem to be solved by the present invention is to provide a substrate processing apparatus and a substrate processing method capable of quickly adjusting the temperature of a processing solution during substrate processing.
- a substrate processing apparatus includes a support unit that supports a substrate, a rotation mechanism that rotates the support unit about an axis that intersects the substrate supported by the support unit, and a support unit that is rotated by the rotation mechanism.
- a nozzle for supplying a processing solution to the surface of the upper substrate, a heater for heating the substrate supported by the support portion away from the substrate, and the heater in the contact / separation direction with respect to the substrate supported by the support portion And a moving mechanism for moving.
- a substrate processing method includes a step of rotating a substrate facing away from a heater in a plane, a step of supplying a processing liquid from a nozzle to the surface of the rotating substrate, a substrate and its substrate by a heater Heating the processing liquid on the surface of the substrate, a step of moving the heater away from the substrate, and a step of heating at least the processing liquid among the processing liquid on the surface of the substrate and the substrate by the heater away from the substrate.
- the temperature of the processing liquid can be quickly adjusted during the substrate processing.
- the substrate processing apparatus 1 ⁇ / b> A includes a processing box 2 serving as a processing chamber, a cup 3 provided in the processing box 2, and a substrate W in the cup 3.
- a support portion 4 that is supported in a horizontal state and a rotation mechanism 5 that rotates the support portion 4 in a horizontal plane are provided.
- the substrate processing apparatus 1 includes a nozzle 6 that supplies a processing liquid to the surface of the substrate W on the support unit 4, a liquid supply unit 7 A that supplies the processing liquid to the nozzle 6, and a substrate W on the support unit 4.
- a heater 8 for heating, a moving mechanism 9 for moving the heater 8 in the vertical direction, and a control unit 10 for controlling each part are provided.
- the cup 3 is formed in a cylindrical shape and encloses the support portion 4 from the periphery and accommodates it inside.
- the upper part of the peripheral wall of the cup 3 is inclined toward the inside in the radial direction, and is opened so that the substrate W on the support portion 4 is exposed.
- the cup 3 receives the processing liquid that has flowed down or scattered from the rotating substrate W.
- a discharge pipe (not shown) for discharging the received processing liquid is provided at the bottom of the cup 3.
- the support portion 4 is positioned near the center in the cup 3 and is provided to be rotatable in a horizontal plane.
- This support part 4 has a plurality of support members 4a such as pins, and these support members 4a hold a substrate W such as a wafer or a liquid crystal substrate in a detachable manner.
- the rotating mechanism 5 includes a rotating shaft coupled to the support portion 4 and a motor (none of which is shown) that serves as a driving source for rotating the rotating shaft, and is supported via the rotating shaft by driving the motor.
- the part 4 is rotated.
- the rotation mechanism 5 is electrically connected to the control unit 10, and the driving thereof is controlled by the control unit 10.
- the nozzle 6 is provided above the support unit 4 and at a position facing the vicinity of the center of the surface of the substrate W on the support unit 4. Supply is possible. Further, the nozzle 6 is supported at the center of the heater 8 and moves up and down as the heater 8 moves up and down. The nozzle 6 discharges the processing liquid supplied from the liquid supply unit 7A toward the surface of the rotating substrate W from above the substrate W on the support unit 4 and supplies the processing liquid to the surface of the substrate.
- the liquid supply unit 7A includes a tank for storing the processing liquid, a pump serving as a driving source, a valve (not shown) serving as an adjustment valve for adjusting the supply amount, and the like. Supply liquid.
- the liquid supply unit 7A is electrically connected to the control unit 10, and the driving thereof is controlled by the control unit 10.
- the treatment liquid for example, ozone water, hydrofluoric acid (HF), ultrapure water (DIW), or the like can be used, and various other treatment liquids are used depending on the content of the treatment. be able to.
- HF hydrofluoric acid
- DIW ultrapure water
- the heater 8 is formed in a plate shape larger than the planar size of the substrate W, is provided above the support portion 4, and is separated from the substrate W on the support portion 4 (with a space from the substrate W). Heat.
- the heater 8 is configured to be movable in the vertical direction (lifting direction) by the moving mechanism 9, and has a plurality of positions at different distances from the surface of the substrate W on the support portion 4, for example, a high temperature processing position and temperature maintenance. Move to a processing position (low temperature processing position) and a standby position.
- the heater 8 is electrically connected to the control unit 10, and its driving is controlled by the control unit 10.
- the high temperature processing position is a position separated from the surface of the substrate W by a predetermined distance (for example, about 1 to 10 mm), and is a position when the heater 8 heats the substrate W at a high temperature.
- the temperature maintenance processing position (low temperature processing position) is a position separated from the surface of the substrate W by a predetermined distance far from the high temperature processing position, and is a position when the heater 8 maintains the temperature of the substrate W at the predetermined temperature.
- the standby position is a position separated from the surface of the substrate W by a predetermined distance far from the temperature maintenance processing position, and is a position when the heater 8 stands by when the substrate is installed or taken out (see the one-dot chain line in FIG. 1).
- the moving mechanism 9 includes a holding unit that holds the heater 8, a vertical mechanism that moves the holding unit in the vertical direction together with the heater 8, a motor (not shown) serving as a drive source, and the like.
- the heater 8 is moved in the contact / separation direction (the direction toward and away from the substrate W) on the support portion 4 together with the holding portion.
- the moving mechanism 9 is electrically connected to the control unit 10, and its driving is controlled by the control unit 10.
- the control unit 10 includes a microcomputer that centrally controls each unit and a storage unit that stores substrate processing information and various programs related to substrate processing.
- the control unit 10 controls the rotation mechanism 5, the liquid supply unit 7A, the moving mechanism 9 and the like based on the substrate processing information and various programs, and adjusts the separation distance between the surface of the substrate W on the support unit 4 and the heater 8. Then, the substrate processing for supplying the processing liquid supplied from the liquid supply unit 7A from the nozzle 6 to the surface of the substrate W on the rotating support unit 4 is controlled.
- the substrate W is set on the support portion 4 and the preparation is completed.
- the heater 8 is waiting at a standby position (see the one-dot chain line in FIG. 1).
- the heater 8 is moved from the standby position to the high temperature processing position by the moving mechanism 9.
- a predetermined distance L ⁇ b> 1 is provided between the back surface of the heater 8 and the surface of the substrate W on the support portion 4.
- the heater 8 is not driven.
- the substrate W on the support portion 4 is rotated at a predetermined rotation speed (liquid supply rotation speed) by the rotation mechanism 5 together with the support portion 4.
- a predetermined rotation speed liquid supply rotation speed
- the processing liquid is supplied from the liquid supply unit 7A, discharged from the nozzle 6 to the substrate W on the support unit 4, and supplied to the surface of the rotating substrate W.
- the processing liquid supplied from the nozzle 6 to the vicinity of the substrate center flows to the peripheral edge of the substrate by centrifugal force. Thereby, the surface of the substrate W is covered with the processing liquid (liquid film) during the substrate processing.
- the space between the back surface of the heater 8 and the surface of the substrate W on the support 4 is filled with the processing liquid, and the back surface of the heater 8 is in contact with the processing liquid filled in the space.
- the supply of the processing liquid is stopped.
- the rotation speed of the substrate W on the support unit 4 is set to be smaller than the initial rotation speed (supply rotation speed) so that the processing liquid filling the space does not flow down from the space. At this time, the rotation of the support portion 4 may be stopped.
- the heater 8 is driven by the control unit 10, the substrate W on the support unit 4 is heated by the heater 8, and between the back surface of the heater 8 and the surface of the substrate W on the support unit 4.
- This processing liquid is also directly heated by the heater 8. Thereby, the processing liquid on the surface of the substrate W is quickly warmed. This heating is performed for a predetermined processing time.
- the predetermined processing time is set in advance from the relationship between the elapsed time of heating by the heater 8 and the temperature rise of the processing liquid or the substrate W, but can be changed by the operator. Further, as described above, the processing liquid supplied at the high temperature processing position may be supplied at normal temperature, or may be supplied by heating to a certain temperature in advance, even if the temperature required for high temperature processing is not reached. It may be what you do. If a pre-heated treatment liquid is supplied, it can be warmed more quickly to the temperature required for the high temperature treatment.
- the heater 8 After the high temperature treatment, as shown in FIG. 4, the heater 8 is moved from the high temperature treatment position to the temperature maintenance treatment position by the moving mechanism 9. Thus, a predetermined distance L2 (> L1) is established between the back surface of the heater 8 and the surface of the substrate W on the support portion 4.
- L2 a predetermined distance between the back surface of the heater 8 and the surface of the substrate W on the support portion 4.
- the back surface of the heater 8 is separated (not in contact) with the liquid film formed on the surface of the substrate W.
- the driving of the heater 8 is continued, and the substrate W on the support portion 4 and the processing liquid on the surface of the substrate W are kept warm by the radiant heat of the heater 8.
- the substrate W is heated so as not to become higher than a predetermined substrate temperature, and the temperature of the processing liquid on the surface of the substrate W is maintained at a desired temperature, that is, not higher or lower than the desired temperature. Is done. At this time, the substrate W is also heated in addition to the processing liquid. However, if the temperature of the processing liquid can be maintained at a desired temperature by heating only the processing liquid, the substrate W may not be heated. .
- the predetermined substrate temperature is set so that the processing liquid supplied to the surface of the substrate W has a desired temperature on the surface of the substrate, but can be changed by the operator.
- the desired temperature is a temperature at which the substrate processing efficiency of the processing liquid (for example, the processing performance of the processing liquid) is improved, but varies depending on the type of the processing liquid.
- the processing liquid there is a processing liquid that improves the substrate processing efficiency when the temperature is equal to or higher than a desired temperature.
- the processing liquid supplied to the surface of the substrate W is the substrate at the predetermined substrate temperature.
- the temperature is set to be higher than a desired temperature on the surface.
- the separation distance between the heater 8 and the substrate W is changed from L1 to L2 (> L1).
- the heater 8 moves away from the substrate W and the processing liquid on the surface thereof, and the amount of heat from the heater 8 with respect to the processing liquid on the substrate W and the surface thereof decreases, so that the temperature of the processing liquid on the surface of the substrate W is reduced. It becomes possible to maintain at a desired temperature.
- the temperature of the processing liquid can be quickly adjusted by changing the separation distance between the heater 8 and the substrate W by moving the heater 8 instead of changing the heater temperature during the processing.
- Substrate processing can be performed by adjusting (controlling) the temperature of the processing solution during processing.
- the substrate W that requires high-temperature processing is an example of cleaning processing.
- a plurality of types of substrates having different processing temperatures for example, the substrate W that requires cleaning in high-temperature processing and the high-temperature processing.
- the processing liquid is supplied to the surface of the substrate W with the heater 8 positioned at a predetermined height higher than the high temperature processing position and lower than the standby position.
- the processing liquid supplied to the surface of the substrate W may be heated to a predetermined temperature lower than the temperature required for the high temperature processing by the radiant heat of the heater 8.
- the temperature of the processing liquid may be maintained by moving the heater 8.
- the heater 8 is driven after moving to the high temperature processing position. However, if it takes time to increase the temperature of the heater 8, the heater 8 is moved from the standby position before moving to the high temperature processing position. It may be driven (or always at all), or may be driven while moving from the standby position to the high temperature processing position.
- the processing steps up to the supply processing step and the high temperature processing step are the same as described above, and after the high temperature processing, as shown in FIG. 9 moves from the high temperature processing position to the low temperature processing position.
- a predetermined distance L2 (> L1) is established between the back surface of the heater 8 and the surface of the substrate W on the support portion 4.
- the heater 8 is not driven and the temperature is not maintained.
- the processing liquid is supplied from the liquid supply unit 7A, discharged from the nozzle 6 onto the substrate W on the support unit 4, and supplied to the surface of the rotating substrate W. Furthermore, the rotation speed of the substrate W on the support unit 4 is increased to a predetermined rotation speed (liquid supply rotation speed).
- the processing liquid supplied from the nozzle 6 to the vicinity of the substrate center flows to the peripheral edge of the substrate by centrifugal force. At this time, the processing liquid on the surface of the substrate W is replaced with the low-temperature processing liquid (liquid film) from the high-temperature processing liquid, and the substrate W is cooled to the processing liquid temperature.
- the processing liquid supplied to the substrate W after the heater 8 has moved to the low temperature processing position may be the same as or different from the processing liquid supplied to the substrate W in the high temperature processing step. is there.
- both the high-temperature treatment process and the low-temperature treatment process may be pure water, or may be subjected to a high-temperature treatment using ozone water and then a low-temperature treatment using pure water.
- the supply amount of the treatment liquid described above may be larger than the supply amount of the treatment liquid at the high temperature treatment position.
- the temperature of the processing liquid may be lower than the temperature of the processing liquid supplied at the high temperature processing position. In such a case, it is possible to shorten the time required until the processing liquid is replaced with a low-temperature processing liquid.
- the rotation speed of the substrate W may be increased from the rotation speed (liquid supply rotation speed) at the high temperature processing position in accordance with the increase in the supply volume.
- the heater 8 is driven by the control unit 10 and, as in the first processing example, the substrate W on the support unit 4 and the processing liquid on the surface of the substrate W (they are heated by the radiant heat of the heater 8). At least the processing solution) is kept warm (see FIG. 4). Thereby, the temperature of the processing liquid on the surface of the substrate W is maintained at a desired temperature.
- the separation distance between the heater 8 and the substrate W is changed from L1 to L2 (> L1), and the processing liquid is further changed. It is supplied to the surface of the substrate W. Accordingly, the heater 8 moves away from the processing liquid on the surface of the substrate W, and the temperature of the processing liquid on the surface of the substrate W is rapidly lowered because the temperature of the substrate W is lowered by supplying the processing liquid. .
- the temperature of the processing liquid is changed by changing the separation distance between the heater 8 and the substrate W by the movement of the heater 8 and by supplying the processing liquid to the surface of the substrate W instead of depending on the temperature adjustment of the heater 8 itself. Therefore, the substrate processing can be performed by adjusting the temperature of the processing solution during the processing.
- the substrate processing includes a step of switching from the high temperature processing to the low temperature processing
- the temperature of the substrate W that is, only supplying the processing liquid by moving the heater 8 away from the substrate W, that is, The temperature of the processing liquid on the substrate W can be quickly lowered to a predetermined temperature. For this reason, it is not necessary to interrupt the process until the substrate temperature falls from a high temperature to a predetermined temperature, or even if it is interrupted, the time can be shortened compared to the conventional case, so that the processing time can be shortened. it can.
- the temperature of the processing liquid (liquid temperature) continues to rise until stable.
- the temperature difference between the stabilized processing liquid temperature (high temperature) and the initial processing liquid temperature (low temperature) becomes considerably large, but the waiting time from the high temperature to the low temperature is unnecessary or shortened, so it is higher. An effect of shortening the processing time can be obtained.
- the heater 8 when the movement of the heater 8 to the low temperature processing position and the supply of the processing liquid are used in combination, the heater 8 is not driven when the heater 8 is moved from the high temperature processing position to the low temperature processing position. However, it may be left in the driven state.
- the heating wire of the heater 8 is divided into a substrate central portion and a substrate peripheral portion to control the amount of heat generated, and the temperature of the substrate peripheral portion is set higher than the substrate central portion. By doing so, it is possible to prevent the temperature at the peripheral edge of the substrate from becoming lower than that at the center of the substrate.
- the temperature of the substrate W can be individually adjusted depending on the location and the surface temperature of the substrate W can be made uniform, non-uniformity in substrate processing efficiency due to a temperature difference on the substrate surface can be suppressed. .
- the installation density of the heating wires of the heater 8 may be changed according to the place.
- the installation density of the heating wire is increased at a location facing the peripheral edge of the substrate where the temperature of the substrate W is likely to decrease, and conversely, the installation of the heating wire is performed at a location facing the central portion of the substrate where the temperature of the substrate W is difficult to decrease. Try to reduce the density.
- the installation density of heating wires may be gradually increased from the center of the substrate W toward the periphery.
- the heater 8 is moved in the contact / separation direction with respect to the substrate W on the support unit 4 instead of relying on the temperature adjustment of the heater 8 itself, that is, By changing the separation distance between the substrate W on the support unit 4 and the heater 8, the temperature of the substrate W, that is, the temperature of the processing liquid on the substrate W can be quickly adjusted. Substrate processing can be performed by adjusting the temperature of the liquid.
- the substrate processing includes a step of switching from the high temperature processing to the low temperature processing
- the processing on the substrate W can be performed simply by moving the heater 8 away from the substrate W and supplying the processing liquid. It is possible to quickly reduce the temperature of the liquid to a predetermined temperature. For this reason, it is not necessary to interrupt the process until the substrate temperature falls from a high temperature to a predetermined temperature, or even if it is interrupted, the time can be shortened compared to the conventional case, so that the processing time can be shortened. it can.
- the second embodiment is basically the same as the first embodiment. Therefore, in the second embodiment, differences from the first embodiment will be described, the same parts as those described in the first embodiment will be denoted by the same reference numerals, and the description thereof will also be omitted.
- a plurality of nozzles 6a, 6b and 6c are provided in the substrate processing apparatus 1B according to the second embodiment.
- the nozzles 6 a, 6 b and 6 c are arranged along the surface of the substrate W on the support portion 4 from the center of the substrate W toward the peripheral edge (outer periphery), and are located above the surface of the substrate W on the support portion 4. Is provided. Furthermore, each nozzle 6a, 6b and 6c is supported by the heater 8, and moves up and down as the heater 8 moves up and down.
- These nozzles 6a, 6b, and 6c respectively discharge the processing liquid supplied from the liquid supply unit 7B from above the substrate W on the support unit 4 toward the surface of the rotating substrate W, and supply the substrate to the substrate surface. To do.
- each of the nozzles 6a, 6b, and 6c a material that is not deformed by heat is used.
- a material such as quartz that is not deformed by the heating of the heater 8 can be used.
- the number of nozzles is three, but this number is merely an example and is not particularly limited.
- the nozzle 6a as the first nozzle is provided at a position facing the vicinity of the center (center region) of the surface of the substrate W on the support portion 4, and the nozzle 6b as the second nozzle is the substrate on the support portion 4. It is provided at a position facing the vicinity of the radius center (radius center region) of the surface of W.
- the nozzle 6c, which is the third nozzle, is provided at a position facing the vicinity of the periphery (peripheral region) of the surface of the substrate W on the support portion 4.
- the nozzles 6 a, 6 b and 6 c are arranged on a straight line extending in the radial direction along the surface of the substrate W on the support portion 4.
- the arrangement of these nozzles 6a, 6b and 6c is not limited to a straight line, and may be arranged alternately, for example, so as to straddle the straight line. It only has to be arranged on the circumference.
- the liquid supply unit 7B includes a tank that stores the processing liquid, a pump that serves as a drive source, a valve that serves as an adjustment valve that adjusts the supply amount (none of which is shown), and the like.
- a processing solution is supplied to 6b and 6c.
- the liquid supply unit 7B is electrically connected to the control unit 10, and the driving thereof is controlled by the control unit 10. The same processing liquid is supplied from the three nozzles 6a, 6b and 6c.
- the heater 8 when the heater 8 is brought close to the substrate W to process the substrate W, if the rotation speed of the substrate W is high, the distribution of the film thickness of the processing liquid differs within the substrate surface, and the surface of the substrate W is uniform. It becomes difficult to process.
- the processing liquid when the processing liquid is supplied only from the nozzle 6a facing the vicinity of the center of the substrate W, the liquid film gradually becomes thinner from the vicinity of the center of the substrate W toward the periphery, and the supply amount of the processing liquid is also increased at the periphery.
- the heating effect by the heater 8 is also reduced, so that the substrate processing efficiency (substrate processing capability) may be lower than that near the center.
- the liquid supply positions with respect to the surface of the substrate W are provided at a plurality of locations from the center of the substrate W toward the peripheral edge (outer periphery) so that the thickness of the liquid film on the surface of the substrate W is uniform.
- the surface of the substrate W can be uniformly processed (for example, a cleaning process or an etching process) by controlling the flow rate of the processing liquid from each. That is, it is possible to maintain a liquid film equivalent to the vicinity of the center at the periphery of the substrate W, and the liquid amount and the heater heating effect are the same at any location on the surface of the substrate W, so that the surface of the substrate W is made uniform. Can be processed.
- the processing liquid is supplied only from the nozzle 6a facing the vicinity of the center of the substrate W, in order to uniformly process the surface of the substrate W, the processing liquid is continuously supplied until the processing of the peripheral edge of the substrate is completed. In this case, however, the processing time is increased correspondingly, and the consumption of the processing liquid is also increased. On the other hand, since the surface of the substrate W can be uniformly processed by providing a plurality of liquid supply positions as described above, the processing time can be shortened and the processing liquid consumption can be reduced. .
- the processing liquid can be easily supplied to the surface of the substrate W even when the flow speed when supplying the processing liquid is slow. can do. Further, since the surface of the substrate W can be coated with the processing liquid even if the flow rate of the processing liquid to be supplied is reduced, the amount of the processing liquid used can be reduced.
- the high temperature treatment step and the low temperature treatment step may be repeated several times, or the high temperature treatment step may be performed after the low temperature treatment step. And the order in which the high-temperature treatment process and the low-temperature treatment process are performed can be appropriately set.
- the same effect as that of the first embodiment can be obtained. Furthermore, by providing a plurality of nozzles 6 a, 6 b and 6 c arranged along the surface of the substrate W on the support portion 4 from the center of the substrate W toward the periphery, the liquid supply position with respect to the surface of the substrate W can be changed to the substrate W. There are a plurality of locations from the center to the periphery. As a result, the processing liquid can be supplied uniformly to the surface of the substrate W and the surface of the substrate W can be processed uniformly, so that non-uniformity in substrate processing efficiency can be reliably suppressed.
- the flow rate of the processing liquid for each of the nozzles 6a, 6b and 6c is set so that the processing liquid on the surface of the substrate W becomes a uniform liquid film.
- the flow rate of the processing liquid for each of the nozzles 6a, 6b, and 6c may be increased in the order from the center of the substrate W toward the periphery. Thereby, it becomes possible to treat the surface of the substrate W uniformly.
- each opening degree is controlled and the flow volume of the process liquid discharged from each nozzle 6a, 6b, and 6c is adjusted.
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- Engineering & Computer Science (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Liquid Crystal (AREA)
- Weting (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
Abstract
Description
第1の実施形態について図1ないし図5を参照して説明する。
第2の実施形態について図6を参照して説明する。
Claims (9)
- 基板を支持する支持部と、
前記支持部により支持されている前記基板に交わる軸を回転軸として前記支持部を回転させる回転機構と、
前記回転機構により回転している前記支持部上の基板の表面に処理液を供給するノズルと、
前記支持部により支持されている前記基板をその基板から離れて加熱するヒータと、
前記支持部により支持されている前記基板に対して前記ヒータを接離方向に移動させる移動機構と、
を備えることを特徴とする基板処理装置。 - 前記ノズルは、前記基板の中心から周縁に並ぶように複数本設けられていることを特徴とする請求項1に記載の基板処理装置。
- 前記ノズルごとの前記処理液の流量は、前記基板の表面上の処理液が均一な液膜となるように設定されていることを特徴とする請求項2に記載の基板処理装置。
- 前記ノズルごとの前記処理液の流量は、前記基板の中心から周縁に向かう順序で増やされていることを特徴とする請求項3に記載の基板処理装置。
- ヒータに対向して離れた基板を平面内で回転させる工程と、
回転している前記基板の表面にノズルから処理液を供給する工程と、
前記ヒータにより前記基板及びその基板の表面上の処理液を加熱する工程と、
前記ヒータを前記基板から遠ざける工程と、
遠ざけた前記ヒータにより前記基板及びその基板の表面上の処理液のうち少なくとも処理液を加熱する工程と、
を有することを特徴とする基板処理方法。 - 前記ヒータを前記基板から遠ざける工程と、遠ざけた前記ヒータにより前記基板及びその基板の表面上の処理液のうち少なくとも処理液を加熱する工程との間に、回転している前記基板の表面にノズルから処理液を供給する工程を有することを特徴とする請求項5に記載の基板処理方法。
- 回転している前記基板の表面に、前記基板の中心から周縁に並ぶ複数本のノズルからそれぞれ処理液を供給することを特徴とする請求項5に記載の基板処理方法。
- 前記ノズルごとの前記処理液の流量を、前記基板の表面上の処理液が均一な液膜となるように設定することを特徴とする請求項7に記載の基板処理方法。
- 前記ノズルごとの前記処理液の流量を、前記基板の中心から周縁に向かう順序で増やすことを特徴とする請求項8に記載の基板処理方法。
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