WO2023037946A1 - 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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- WO2023037946A1 WO2023037946A1 PCT/JP2022/032814 JP2022032814W WO2023037946A1 WO 2023037946 A1 WO2023037946 A1 WO 2023037946A1 JP 2022032814 W JP2022032814 W JP 2022032814W WO 2023037946 A1 WO2023037946 A1 WO 2023037946A1
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- 239000000758 substrate Substances 0.000 title claims abstract description 156
- 238000012545 processing Methods 0.000 title claims abstract description 69
- 238000003672 processing method Methods 0.000 title claims description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 117
- 239000002245 particle Substances 0.000 description 25
- 239000012159 carrier gas Substances 0.000 description 9
- 239000002994 raw material Substances 0.000 description 7
- 230000006837 decompression Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- 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
-
- 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
Definitions
- the present disclosure relates to a substrate processing apparatus and a substrate processing method.
- a mixed gas composed of a reactive gas (for example, ClF 3 gas) and an additive gas (for example, Ar gas) is ejected from a nozzle outlet into a vacuum processing chamber, and adiabatic expansion of the mixed gas causes a reaction.
- a reactive cluster is generated and the substrate surface is processed with the reactive cluster.
- One aspect of the present disclosure provides a technique for regulating the gas flow around the substrate and suppressing reattachment of particles to the substrate.
- a substrate processing apparatus includes a processing container that includes a processing chamber that is decompressed to a pressure lower than atmospheric pressure, a holding unit that holds a substrate in the processing chamber, and a substrate that is held by the holding unit. a nozzle for injecting gas to irradiate gas clusters onto the first main surface of the substrate.
- the processing container includes a facing wall including a first facing surface facing the first main surface of the substrate, a plate provided on a part of the first facing surface of the facing wall, and the facing wall and the plate. and a through hole penetrating through.
- the plate has a second facing surface facing the first major surface of the substrate.
- the through holes are passageways for the gas and have outlets in the second facing surface of the plate.
- a first gap is formed between the opposing wall and the substrate, and a second gap is formed between the plate and the substrate, the second gap being narrower than the first gap.
- FIG. 1 is a diagram showing a substrate processing apparatus according to one embodiment.
- FIG. 2 is a diagram showing an example of movement of the holding part in FIG. 1;
- FIG. 3 is an enlarged view of a part of FIG. 1 showing an example of gas flow.
- FIG. 4 is a diagram showing gas flows in the substrate processing apparatus according to the reference embodiment.
- the substrate processing apparatus 1 removes particles adhering to the first main surface Wa of the substrate W by irradiating the first main surface Wa of the substrate W with gas clusters.
- the substrate W is, for example, a silicon wafer.
- the substrate W may be a compound semiconductor wafer, a sapphire substrate, or a glass substrate.
- the substrate W has a first main surface Wa and a second main surface Wb opposite to the first main surface Wa.
- the substrate processing apparatus 1 includes, for example, a processing vessel 2, a holding section 3, a nozzle 5, a gas supply section 6, a decompression section 7, a drive section 8, and a control section 9, as shown in FIG. Prepare.
- the processing container 2 includes therein a processing chamber 21 that is decompressed to a pressure lower than atmospheric pressure by the decompression unit 7 .
- the processing container 2 has a ceiling wall 22 , a bottom wall 23 and side walls 24 .
- the side wall 24 is formed in a frame shape.
- a gate 25 serving as a loading/unloading port for the substrate W is formed on the side wall 24 .
- Gate 25 is opened and closed by gate valve 26 .
- the holding part 3 holds the substrate W in the processing chamber 21 .
- the holding unit 3 holds the substrate W horizontally, for example, with the first main surface Wa of the substrate W facing upward.
- the first main surface Wa is a main surface irradiated with gas clusters.
- the holding unit 3 holds the substrate W so that the center of the first main surface Wa coincides with the center line of the rotating shaft 82 to be described later.
- the nozzle 5 has an injection port 51 for injecting gas so as to irradiate the substrate W held by the holding part 3 with gas clusters.
- the jetting direction of the gas is, for example, the direction perpendicular to the first main surface Wa of the substrate W, for example, the downward direction. Since the gas cluster collides perpendicularly with the first main surface Wa, it is possible to suppress the pattern collapse of the concave-convex pattern previously formed on the first main surface Wa.
- the nozzle 5 has a gas supply chamber 52, a throat 53, and a tapered hole 54 in this order from upstream to downstream (for example, from top to bottom).
- Tapered hole 54 has injection port 51 at its downstream end.
- the tapered hole 54 has a larger diameter from upstream to downstream.
- the gas After the gas is supplied to the gas supply chamber 52 , the gas is accelerated by passing through the throat 53 and jetted from the jet port 51 .
- the injected CO 2 gas is adiabatically expanded in the pre-decompressed processing chamber 21, so that it is cooled to the condensation temperature.
- the CO 2 molecules are bound together by van der Waals forces to form gas clusters, which are aggregates of CO 2 molecules.
- the gas cluster collides with the particles adhering to the first main surface Wa of the substrate W and blows off the particles. Gas clusters can also blow away particles around the colliding position by colliding with the first main surface Wa without directly colliding with the particles. Since the gas cluster becomes hot due to the collision, it is decomposed into pieces and exhausted from the exhaust port 231 of the bottom wall 23 .
- the exhaust port 231 is provided, for example, at a position facing the nozzle 5 , specifically, directly below the nozzle 5 . Note that the position of the exhaust port 231 is not particularly limited.
- the gas supply unit 6 supplies the nozzle 5 with a raw material gas that forms gas clusters.
- the raw material gas is injected from the nozzle 5 and adiabatically expanded in the pre-decompressed processing chamber 21 to be cooled to the condensation temperature and form gas clusters, which are aggregates of molecules or atoms.
- the raw material gas contains at least one gas selected from, for example, carbon dioxide (CO 2 ) gas and argon (Ar) gas.
- the gas supply unit 6 may supply a mixed gas of source gas and carrier gas to the nozzle 5 .
- the carrier gas has a lower molecular weight or atomic weight than the source gas. Therefore, the carrier gas has a higher condensation temperature than the source gas. Therefore, the carrier gas does not form gas clusters.
- the carrier gas contains at least one gas selected from, for example, hydrogen (H 2 ) gas and helium (He) gas.
- the carrier gas suppresses the liquefaction of the raw material gas inside the nozzle 5 by lowering the partial pressure of the raw material gas. Further, the carrier gas increases the gas supply pressure to the nozzle 5 to a desired atmospheric pressure, thereby increasing the acceleration of the raw material gas and promoting the growth of gas clusters.
- CO 2 gas is used as the raw material gas and H 2 gas is used as the carrier gas, but the combination is not particularly limited.
- the size of the gas cluster can be adjusted, for example, by (A) the gas pressure of the gas supply chamber 52, (B) the flow rate ratio between the source gas and the carrier gas, (C) the gas pressure of the processing chamber 21, and the like. If the gas cluster size is too small, the particle removal efficiency will be too low. On the other hand, if the size of the gas cluster is too large, the uneven pattern previously formed on the first main surface Wa of the substrate W collapses.
- the decompression unit 7 decompresses the processing chamber 21 to a pressure lower than the atmospheric pressure.
- the decompression unit 7 includes, for example, a suction pump for sucking gas from the processing chamber 21, a suction line connecting the exhaust port 231 of the bottom wall 23 and the suction pump, and a pressure controller provided in the middle of the suction line. and The pressure controller adjusts the gas pressure in the processing chamber 21 under the control of the controller 9 .
- the gas pressure in the processing chamber 21 is controlled to 5 Pa to 120 Pa, for example.
- the drive unit 8 has a rotation drive unit 81 that rotates the holding unit 3, as shown in FIGS.
- the holding unit 3 holds the substrate W such that the center of the first main surface Wa of the substrate W coincides with the center line of the rotating shaft 82 .
- the rotation driving portion 81 rotates the holding portion 3 around the center line of the rotating shaft 82 . Thereby, the irradiation position of the gas cluster on the first main surface Wa of the substrate W can be moved in the circumferential direction of the substrate W. As shown in FIG.
- the drive section 8 has a movement drive section 83 that moves the holding section 3 .
- the movement drive unit 83 relatively moves the nozzle 5 and the holding unit 3 in the radial direction of the substrate W by moving the holding unit 3 in a direction perpendicular to the center line of the rotating shaft 82 . Thereby, the irradiation position of the gas cluster on the first main surface Wa of the substrate W can be moved in the radial direction of the substrate W. As shown in FIG.
- the movement drive unit 83 moves the holding unit 3 in a direction perpendicular to the center line of the rotation shaft 82 by rotating an arm (not shown), for example. Note that the movement drive unit 83 may move the holding unit 3 along the guide rail instead of rotating the arm.
- the rotation drive unit 81 moves the irradiation position of the gas cluster in the circumferential direction of the substrate W, and the movement drive unit 83 moves the irradiation position of the gas cluster in the radial direction of the substrate W. Therefore, the entire first main surface Wa of the substrate W can be irradiated with gas clusters.
- the nozzle 5 is fixed to the processing container 2 in this embodiment, it may be provided movably inside the processing container 2 . In this case, it is possible to move the irradiation position of the gas cluster on the first main surface Wa of the substrate W in the radial direction of the substrate W by moving the nozzle 5 instead of the holding portion 3 .
- the control unit 9 is, for example, a computer, and includes a CPU (Central Processing Unit) 91 and a storage medium 92 such as a memory.
- the storage medium 92 stores programs for controlling various processes executed in the substrate processing apparatus 1 .
- the control unit 9 controls the operation of the substrate processing apparatus 1 by causing the CPU 91 to execute programs stored in the storage medium 92 .
- the ceiling wall 22 of the processing container 2 has a first opposing surface 221 that faces the first main surface Wa of the substrate W. As shown in FIG. The first facing surface 221 of the ceiling wall 22 and the first main surface Wa of the substrate W are parallel to form a first gap G1.
- the first gap G1 is determined in consideration of the workability of loading/unloading the substrate W and the like.
- the ceiling wall 22 has a nozzle storage section 222 .
- the nozzle storage part 222 is a space for storing the nozzle 5 .
- the nozzle 5 has, for example, a T-shaped cross section, and the nozzle storage part 222 has, for example, a rectangular cross section.
- the distance between the injection port 51 of the nozzle 5 and the first main surface Wa of the substrate W is determined in consideration of the particle removal efficiency, and adjusted to the optimum distance.
- the nozzle 5 injects gas perpendicularly to the first main surface Wa of the substrate W.
- the gas changes direction by colliding with the first major surface Wa of the substrate W.
- the gas spreads radially along the first main surface Wa of the substrate W from the position where it collides with the substrate W (that is, the irradiation position of the gas cluster).
- the gas flows outside the peripheral edge of the first main surface Wa, it flows downward toward the exhaust port 231 of the bottom wall 23 .
- Problems of the substrate processing apparatus 1 include the following (1) to (3).
- (1) The size of the first gap G1 is large, and in the first gap G1, not only the flow of gas moving away from the irradiation position of the gas cluster but also the flow of gas flowing backward toward the irradiation position of the gas cluster is formed. (see dashed line A1 in FIG. 4).
- the backflow of the gas hinders ejection of particles detached from the substrate W at the irradiation position of the gas cluster. As a result, the particles adhere to the first main surface Wa of the substrate W again.
- the size of the nozzle storage part 222 is larger than the size of the nozzle 5, and there is an excess space in the nozzle storage part 222, causing gas to flow back from the outside to the inside of the nozzle storage part 222 (broken line in FIG. 4).
- the counterflowing gas hinders the ejection of particles detached from the substrate W. FIG. As a result, the particles adhere to the first main surface Wa of the substrate W again.
- the above problem (3) occurs even when the nozzle 5 is not fixed and moves in the radial direction of the substrate W, but it is remarkable when the nozzle 5 is fixed and the holder 3 moves. This is because the size of the processing chamber 21 is set large so that the holding unit 3 can move.
- the processing container 2 includes a plate 27 provided on a part of the first facing surface 221 of the ceiling wall 22 and a ceiling wall 22 as shown in FIG. and a through hole 28 passing through the plate 27 . Since the plate 27 is provided on a part of the first facing surface 221 of the ceiling wall 22, the workability of loading and unloading the substrate W is not impaired.
- the loading/unloading operation of the substrate W is preferably performed at a position (a position outside the plate 27) where the entire substrate W does not overlap the plate 27 when viewed from above (not shown).
- the plate 27 may be removable from the ceiling wall 22 .
- the plate 27 has a second facing surface 271 facing the first main surface Wa of the substrate W.
- the second opposing surface 271 of the plate 27 and the first major surface Wa of the substrate W are parallel to form a second gap G2.
- the through hole 28 is a gas passage and has an outlet 281 on the second facing surface 271 of the plate 27 .
- An outlet 281 of the through hole 28 faces the second gap G2.
- the second gap G2 is narrower than the first gap G1.
- the movement driving section 83 moves the holding section 3 between the loading/unloading position and the processing position.
- the loading/unloading position is a position where the substrate W is attached to and detached from the holding unit 3, and is preferably a position (a position outside the plate 27) where the entire substrate W does not overlap the plate 27 when viewed from above.
- the processing position is a position where the substrate W is irradiated with gas clusters, and a second gap G2 is formed between at least a portion of the first main surface Wa of the substrate W and the second opposing surface 271 of the plate 27. position.
- the second gap G2 is narrow, the flow velocity of gas moving away from the irradiation position of the gas cluster is high, and the flow of gas that flows backward toward the irradiation position of the gas cluster does not occur.
- the particles detached from the substrate W at the irradiation position of the gas cluster can be quickly discharged, and reattachment of the particles to the first main surface Wa of the substrate W can be suppressed. Therefore, the number of particles adhering to the substrate W can be reduced.
- the size of the second gap G2 is, for example, 20 mm or less, preferably 15 mm or less.
- the size of the second gap G2 is measured in a direction orthogonal to the first main surface Wa of the substrate W. As shown in FIG. If the size of the second gap G2 is 20 mm or less, the flow velocity of the gas moving away from the irradiation position of the gas cluster is sufficiently high.
- the size of the second gap G2 is preferably 1 mm or more, more preferably 5 mm or more.
- a distance D between the peripheral edge of the second opposing surface 271 and the center of the outlet 281 of the through hole 28 is, for example, 50 mm or more over the entire peripheral edge of the second opposing surface 271 . If the distance D is 50 mm or more, it is possible to suppress backflow of gas around the irradiation position of the gas cluster, and to suppress redeposition of particles.
- the peripheral edge of the second facing surface 271 is circular in this embodiment, it may be quadrangular and its shape is not particularly limited. It is sufficient if the distance D is 50 mm or more. Distance D may be equal to or greater than the diameter of substrate W (eg, 300 mm). The distance D is preferably 400 mm or less.
- the plate 27 has a tapered surface 272 on its peripheral edge that approaches the first facing surface 221 of the ceiling wall 22 as the distance from the centerline of the through hole 28 increases.
- the tapered surface 272 is inclined with respect to the first opposing surface 221, and gradually widens the gas flow from the second gap G2 toward the first gap G1.
- the ceiling wall 22 of the processing container 2 has a cylindrical body 223 that partially fills the space of the nozzle storage section 222, as shown in FIG.
- the cylindrical body 223 suppresses the backflow of gas from the outside to the inside of the nozzle storage section 222, and suppresses reattachment of particles.
- the cylindrical body 223 fills a part of the space of the nozzle storage part 222 to regulate the flow of gas from the nozzle 5 toward the substrate W, suppress the expansion of the gas flow, and move from the nozzle 5 toward the substrate W. Increase gas velocity. As a result, gas clusters are efficiently generated and particle removal efficiency is enhanced.
- the nozzle 5 has a T-shaped cross section and has a shaft portion 55 and a flange portion 56 larger than the shaft portion 55 .
- the shaft portion 55 is provided vertically, for example.
- the flange portion 56 is provided horizontally on the upper end of the shaft portion 55 .
- a gas supply chamber 52 is formed on the upper surface of the flange portion 56 , and an injection port 51 is formed on the lower surface of the shaft portion 55 .
- the tubular body 223 surrounds the shaft portion 55 .
- the cylindrical body 223 has, for example, a straight hole 282 into which the shaft portion 55 of the nozzle 5 is inserted, and a first tapered hole 283 that widens toward the substrate W from the straight hole 282 .
- the cylindrical body 223 is in contact with the plate 27.
- a second tapered hole 284 that widens toward the substrate W from the first tapered hole 283 is formed in the plate 27 .
- a second tapered hole 284 is formed continuously from the first tapered hole 283 .
- An outlet 281 of the through hole 28 is formed at the downstream end of the second tapered hole 284 .
- the through hole 28 has a straight hole 282, a first tapered hole 283, and a second tapered hole 284 in this order from upstream to downstream.
- the first tapered hole 283 and the second tapered hole 284 have a shape extending downstream from the tapered hole 54 of the nozzle 5, and suppress the expansion of the gas flow and the backflow of the gas.
- the substrate processing apparatus 1 includes a rectifying ring 4 which surrounds the periphery of the substrate W held by the holding section 3 and regulates the gas flow at the periphery of the substrate W.
- the rectifying ring 4 can block the flow of the gas that rolls back toward the peripheral edge of the substrate W, and can suppress redeposition of particles.
- the rectifying ring 4 protrudes from the first main surface Wa of the substrate W toward the first facing surface 221 of the ceiling wall 22 and the second facing surface 271 of the plate 27 .
- a third gap G3 is formed between the tip (for example, the upper end) of the rectifying ring 4 and the second facing surface 271 of the plate 27 .
- the third gap G3 is narrower than the second gap G2.
- the third gap G3 is narrow, the flow velocity of the gas flowing radially outward of the substrate W from the peripheral edge of the substrate W along the second facing surface 271 of the plate 27 is high, and the flow of the gas rolling back toward the peripheral edge of the substrate W is high. does not occur. Therefore, redeposition of particles can be suppressed.
- the third gap G3 may be variable.
- the rectifying ring 4 may be relatively movable with respect to the holder 3 in a direction perpendicular to the first main surface Wa of the substrate W (for example, the vertical direction).
- the rectifying ring 4 forms two gas flows near the periphery of the substrate W, for example.
- One flow is a flow parallel to the second facing surface 271 of the plate 27 and a flow directed radially outward of the substrate W from the peripheral edge of the substrate W.
- FIG. Another flow is flow perpendicular to the second facing surface 271 of the plate 27 and through the gap formed between the peripheral edge of the substrate W and the rectifying ring 4 (eg downward flow).
- the rectifying ring 4 has, for example, a vertical portion 41 perpendicular to the first main surface Wa of the substrate W and an inclined portion inclined to the first main surface Wa of the substrate W. 42 and .
- the inclined portion 42 becomes farther from the first facing surface 221 of the ceiling wall 22 and the second facing surface 271 of the plate 27 toward the radially outer side of the substrate W.
- the inclined portion 42 can smoothly change the direction of part of the gas flow along the second opposing surface 271 of the plate 27 to the gas flow away from the second opposing surface 271 of the plate 27 .
- the rotation driving section 81 may rotate the rectifying ring 4 together with the holding section 3 .
- the substrate W held by the holder 3 and the rectifying ring 4 can be rotated in the same direction at the same number of rotations.
- a relative speed difference between the substrate W and the straightening ring 4 can be reduced, and rebounding of particles colliding with the straightening ring 4 can be suppressed. After colliding with the straightening ring 4 , the particles flow along the vertical portion 41 of the straightening ring 4 .
- the plate 27, the cylindrical body 223, and the rectifying ring 4 are used to solve the three problems (1) to (3) above. Any one or more selected from the plate 27, the cylindrical body 223, and the rectifying ring 4 may be used.
- the ceiling wall 22 is the opposite wall facing the first main surface Wa of the substrate W.
- the nozzle 5 is arranged above the substrate W, but the technology of the present disclosure is not limited to this.
- the holding part 3 may hold the substrate W vertically with the first main surface Wa of the substrate W facing sideways, and the side wall 24 may be a wall facing the first main surface Wa of the substrate W.
- the nozzles 5 may be arranged laterally of the substrate W. FIG.
- the holding part 3 may hold the substrate W horizontally with the first main surface Wa of the substrate W facing downward, and the bottom wall 23 is a facing wall facing the first main surface Wa of the substrate W.
- the nozzle 5 may be positioned below the substrate W. FIG.
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Abstract
Description
2 処理容器
21 処理室
22 天井壁(対向壁)
221 第1対向面
27 プレート
28 貫通穴
3 保持部
5 ノズル
W 基板
Wa 第1主面
Claims (13)
- 大気圧よりも低い圧力に減圧される処理室を内部に含む処理容器と、前記処理室にて基板を保持する保持部と、前記保持部で保持されている前記基板の第1主面に対してガスクラスターを照射すべく、ガスを噴射するノズルと、を備え、
前記処理容器は、前記基板の前記第1主面に対向する第1対向面を含む対向壁と、前記対向壁の前記第1対向面の一部に設けられるプレートと、前記対向壁と前記プレートを貫通する貫通穴と、を有し、
前記プレートは前記基板の前記第1主面に対向する第2対向面を有し、前記貫通穴は前記ガスの通路であって前記プレートの前記第2対向面に出口を有し、前記対向壁と前記基板の間に第1隙間が形成され、前記プレートと前記基板の間に第2隙間が形成され、前記第2隙間は前記第1隙間よりも狭い、基板処理装置。 - 前記第2隙間の大きさは、20mm以下である、請求項1に記載の基板処理装置。
- 前記第2対向面の周縁と前記貫通穴の前記出口の中心との距離は、前記第2対向面の周縁全体に亘って、50mm以上である、請求項1又は2に記載の基板処理装置。
- 前記プレートは、その周縁に、前記貫通穴の中心線から離れるほど前記対向壁の前記第1対向面に近づくテーパー面を有する、請求項1又は2に記載の基板処理装置。
- 前記ノズルは、上流側から下流側に向かって広がるテーパー穴を有し、
前記貫通穴は、前記ノズルの前記テーパー穴を下流に向けて延長した形状のテーパー穴を有する、請求項1又は2に記載の基板処理装置。 - 前記保持部を回転させる駆動部を備える、請求項1又は2に記載の基板処理装置。
- 前記保持部により保持されている前記基板の周縁を囲み、前記基板の周縁における前記ガスの流れを整える整流リングを備える、請求項1又は2に記載の基板処理装置。
- 前記整流リングと前記プレートの間に第3隙間が形成され、前記第3隙間は前記第2隙間よりも狭い、請求項7に記載の基板処理装置。
- 前記保持部と共に前記整流リングを回転させる駆動部を備える、請求項7に記載の基板処理装置。
- 大気圧よりも低い圧力に減圧される処理室を内部に含む処理容器と、
前記処理室にて基板を保持する保持部と、
前記保持部により保持されている前記基板の第1主面に対してガスクラスターを照射すべく、ガスを噴射するノズルと、
前記保持部により保持されている前記基板の周縁を囲み、前記基板の周縁における前記ガスの流れを整える整流リングと、
を備える、基板処理装置。 - 前記処理容器は、前記保持部により保持されている前記基板に対向する第1対向面を含む対向壁を有し、
前記整流リングは、前記基板の前記第1主面よりも、前記対向壁の前記第1対向面に向けて突出している、請求項10に記載の基板処理装置。 - 前記保持部と共に前記整流リングを回転させる駆動部を備える、請求項10又は11に記載の基板処理装置。
- 請求項1、2、10及び11のいずれか1項に記載の基板処理装置を用いて、前記基板に対して前記ガスクラスターを照射することを含む、基板処理方法。
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JP2016076702A (ja) * | 2014-10-06 | 2016-05-12 | ティーイーエル エフエスアイ,インコーポレイティド | 極低温流体混合物で基板を処理するシステムおよび方法 |
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JP2016076702A (ja) * | 2014-10-06 | 2016-05-12 | ティーイーエル エフエスアイ,インコーポレイティド | 極低温流体混合物で基板を処理するシステムおよび方法 |
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