WO2005004217A1 - 基板処理法及び基板処理装置 - Google Patents
基板処理法及び基板処理装置 Download PDFInfo
- Publication number
- WO2005004217A1 WO2005004217A1 PCT/JP2003/015430 JP0315430W WO2005004217A1 WO 2005004217 A1 WO2005004217 A1 WO 2005004217A1 JP 0315430 W JP0315430 W JP 0315430W WO 2005004217 A1 WO2005004217 A1 WO 2005004217A1
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- WIPO (PCT)
- Prior art keywords
- processing
- substrate
- tank
- cleaning
- section
- Prior art date
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- 239000000758 substrate Substances 0.000 title claims abstract description 108
- 238000003672 processing method Methods 0.000 title claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 83
- 238000004080 punching Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 79
- 238000004140 cleaning Methods 0.000 claims description 56
- 238000011282 treatment Methods 0.000 claims description 42
- 239000000126 substance Substances 0.000 claims description 36
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- 230000007246 mechanism Effects 0.000 claims description 22
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 239000011295 pitch Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 3
- 230000036544 posture Effects 0.000 claims description 2
- 238000005406 washing Methods 0.000 abstract description 16
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 72
- 239000007789 gas Substances 0.000 description 59
- 235000012431 wafers Nutrition 0.000 description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 29
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 18
- 239000003960 organic solvent Substances 0.000 description 18
- 239000000243 solution Substances 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 229910001873 dinitrogen Inorganic materials 0.000 description 14
- 238000000034 method Methods 0.000 description 12
- 239000002245 particle Substances 0.000 description 6
- 239000011261 inert gas Substances 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 230000004308 accommodation Effects 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 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 2
- 239000003380 propellant Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
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
- H01L21/04—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
- H01L21/67034—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for drying
-
- 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
Definitions
- the present invention relates to a substrate processing method and apparatus for processing a semiconductor wafer, a substrate for a liquid crystal display device, a substrate for a recording disk, or a substrate for a mask, and other substrates. More particularly, the present invention relates to a substrate processing method and a substrate processing apparatus capable of performing a series of surface treatments from treatment of various substrates with a chemical solution to drying and the like in one treatment tank. Background technology
- the wafer surface is washed with a chemical solution, and then washed with a processing solution such as pure water, and then isopropyl alcohol (IPA). ) And other organic solvents are used to dry the wafers. More specifically, in this process, after cleaning the wafer with a chemical solution and pure water, the wafer is exposed to IPA vapor to condense the IPA on the surface of the wafer, and the IPA is condensed by the condensing of the IPA.
- IPA isopropyl alcohol
- the pure water that has adhered to the surface is replaced with IPA, and as the pure water flows down from the surface of the wafer, a process of washing out contaminants such as partakes, etc., and then evaporating the IPA to clean the wafer surface Drying step for drying.
- IPA IPA
- the drying step even if a small amount of water droplets remain on the surface of the wafer, a water mark is formed on the surface of the wafer, and this water mark causes deterioration of the quality of the wafer as in the case of particles. Therefore, in the semiconductor manufacturing process, it is necessary to prevent these contaminants from adhering to the wafer.
- a number of substrate surface treatment methods and treatment apparatuses such as a wafers that take such measures have been devised.
- the substrate processing apparatus described in the patent document includes a single processing tank, which includes a bottomed box having an open top and a lid covering the opening, and the box has a large number of openings. It is formed in such a size that the two wafers can be supported and accommodated in parallel at required intervals in a vertical state, and the depth of the box is such that when the wafer is immersed in an It is formed to such a depth that an upper space of an appropriate volume to be supplied is secured.
- This treatment tank is used for chemical treatment, water washing to remove the chemical from the surface of the wafer with pure water for washing, and after the completion of the water washing, the adhering water remaining on the wafer surface is removed by the vapor of the organic solvent.
- a process such as a drying process for removing by mixing and replacing the gas with an inert gas is performed. Then, when the flow of the inert gas in the treatment tank in the drying process of the wafer was examined, a route as shown in FIG. 9 was observed.
- FIG. 9 is a cross-sectional view schematically showing the flow of the inert gas in the processing tank.
- the substrate processing apparatus 1 has a bottomed box-shaped inner tank 2 having an open upper surface, an outer tank 22 surrounding the upper periphery of the inner tank 2, and an openable / closable upper part provided on the outer tank. and a processing tank 2 comprising a lid 2 3.
- a processing liquid discharge hole 2 12 is formed at the bottom of the inner tank 2 i, an exhaust pipe 5 is connected to the discharge hole, and the other end is connected to a vacuum pump or the like.
- the outer tub 2 is housed in 2 base one path ejection port 8 protrudes, is connected to these ejection ports 8 Habe over path supplying mechanism 9. Furthermore, above the ⁇ 2 3, gas injection nozzle 4 is mounted, the injection nozzle 4 ⁇ is connected to a nitrogen gas supply source 7 through a pipe 4.
- the injected nitrogen gas N 2 flows downward, and It is injected into the body W, and then discharged from the exhaust pipe 5 out of the tank.
- the gas injected into the wafer stack W collides with the bottom wall of the inner tank 2 and rises, and returns to the inside of the processing tank 2. It is released from the outside.
- the surface of the wafer integrated body W ′ is dried by the gas directly injected from the injection nozzle 4 and the gas refluxed in the processing tank 2.
- One of the sources of the turbulence may be due to the fact that the treatment tank does not have a dry treatment section and a cleaning treatment section.
- the cause of the turbulence was also in this exhaust treatment equipment.
- the exhaust pipe from the substrate processing equipment is connected to the exhaust processing equipment in the factory.
- This exhaust treatment equipment uses a vacuum pump, and a plurality of devices and devices are connected to this pump to manage the exhaust treatment collectively. For this reason, it is difficult to make detailed adjustments for each device and device in consideration of the specifications of each device and device, and if individual adjustments are to be made, a rise in equipment costs is inevitable.
- the first object of the present invention is to provide a method in which a dry gas is uniformly applied to a plurality of substrate assemblies.
- Another object of the present invention is to provide a substrate processing method capable of stably supplying the substrate.
- a second object of the present invention is to provide a substrate processing apparatus that reduces contaminants adhering to the surface of a substrate when processing a large amount of the substrate and prevents a decrease in yield due to contamination.
- the above object can be achieved by the following means. That is, in the substrate processing method of the present invention, the processing tank is divided into a cleaning processing section and a drying processing section, a gap is formed at a joint between the processing sections, and the gap is communicated with a sink.
- the substrate is moved from the cleaning section to the drying section, a perforated plate is inserted below the gap formed, the internal pressure of the drying section is higher than the internal pressure of the sink, and the internal pressure of the cleaning section.
- the drying gas is sprayed onto the substrate such that the pressure is lower than the internal pressure of the drying processing section.
- the internal pressure of the drying Since the pressure is reliably higher than the internal pressure of the drying section, the downflow of the drying gas in the drying processing section is smooth, and the surface treatment of a group of a plurality of substrates can be efficiently performed by the laminar flow of the drying gas.
- a processing liquid supply unit and a processing liquid discharge unit are independently provided at a bottom thereof, and the following steps (a) to (d) are performed during substrate cleaning. It is characterized in that it is performed. .
- this substrate processing method a series of processing of chemical solution, cleaning, and drying can be performed using a common processing tank, so that the substrate is not exposed to air during this series of processing. Therefore, the efficiency of substrate processing can be increased, the formation of a natural oxide film can be suppressed, and contamination due to particles and the like can be prevented.
- the treatment liquid discharge unit is provided with a drain mechanism in the treatment liquid discharge unit, and when the substrate is dried, a perforated plate is inserted between the cleaning treatment unit and the drying treatment unit, and at the same time, the drain mechanism is operated. It is preferable that the processing liquid in the cleaning section is discharged in a short time, and the perforated plate is a punching plate provided with a plurality of small holes having a predetermined diameter.
- the small holes in the punching plate disperse the drying gas, and the internal pressure of the drying processing section can be made higher than the internal pressure of the cleaning processing section by the orifice effect.
- the drain mechanism by operating the drain mechanism, a large amount of the processing liquid in the cleaning processing section is quickly discharged, so that the downflow of the drying gas in the drying processing section becomes smooth, and a plurality of substrates are formed by the laminar flow of the drying gas.
- Group surface treatment which can be efficiently performed, includes: a support unit that supports a plurality of substrates to be processed in parallel and perpendicular postures at equal pitches to each other; and a set of substrates supported by the support unit.
- a washing treatment tank for housing the body, and a lid that covers an upper opening of the washing treatment tank and functions as a drying treatment tank.
- the lid has a size enough to accommodate the aggregate of the substrates and has a ceiling.
- a container having a closed surface and an open lower portion, a plurality of injection nozzles arranged in a plane at substantially equal intervals on a ceiling surface of the container, and each injection nozzle hole provided toward the substrate assembly;
- a drying gas is supplied to a group of a plurality of substrates in a drying processing tank, and then a portion of the drying gas flows from the gap to the sink, and the remainder passes through the cleaning processing tank. It is exhausted to the outside.
- the internal pressure of the drying processing tank is surely higher than the internal pressure of the cleaning processing unit, the downflow of the drying gas in the drying processing tank becomes smooth, and the laminar flow of the drying gas causes the surface of the plurality of substrate groups to flow. Processing can be performed efficiently.
- the cleaning processing tank has a processing liquid supply unit and a processing liquid discharge unit provided independently at a bottom thereof, and a processing liquid supply connected to the processing liquid supply unit and supplying the processing liquid to the processing tank.
- a drain mechanism is provided in the treatment liquid discharge unit, and the drain mechanism is activated at the same time that the perforated plate is inserted between the cleaning tank and the lid when the substrate assembly is dried.
- the plurality of spray nozzles are provided on a ceiling surface of the container along an outer peripheral edge of the substrate assembly so that a distance between the outer peripheral edge and each nozzle hole is substantially equal.
- the perforated plate is a punching plate having a plurality of holes having a predetermined diameter.
- the dry gas can be uniformly and stably supplied to the substrate assembly.
- FIG. 1 is a sectional view showing a substrate processing apparatus according to an embodiment of the present invention
- FIG. 2 is a side view showing the processing tank
- Fig. 3 is a side view of the processing tank of Fig. 2 viewed from the other side.
- Figure 4 is a plan view seen through the top of the lid
- FIG. 5 is a side view of the lid shown in FIG. 4,
- Figure 6 is a table showing a time chart of a series of processes
- FIG. 7 shows the washing and drying steps
- Fig. 7 (a) shows the washing step
- Fig. 7 (b) shows the drying step 1
- Fig. 7 (c) shows the drying step 2
- Fig. 7 (d) shows the drying step 3.
- FIG. 8 is a cross-sectional view schematically showing the flow of the dry gas in FIG. 7 (c)
- FIG. 9 is a flow of an inert gas in a processing tank in a conventional substrate processing apparatus. Sectional view showing
- a substrate processing apparatus 10 is equipment for processing a semiconductor wafer W as an example of a substrate.
- the treatment here refers to, for example, etching of wafer A with a chemical solution, a process of hydrofluoric acid treatment of the surface of wafer A, or a rinsing treatment of washing wafer A with water, and drying of wafer W with an organic solvent after washing with water. Processing.
- These series of processes are continuously performed in one processing tank 15. As shown in FIGS. 2 to 5, the processing tank 15 is installed in a storage room 11 having a volume that can be stored together with its attached devices.
- Attached devices are an air conditioner that air-conditions the accommodation room, a supply source that supplies various processing liquids to the processing tank, a wafer transport mechanism, etc., and these are omitted in the figure.
- the processing tank 15 includes a box-shaped inner tank 20 with an open upper surface, an outer tank 25 surrounding the upper periphery of the inner tank 20, and a lid 30 covering the opening of the inner tank 20.
- the inner and outer tanks 20 and 25 are housed in the sink 29.
- the inner and outer tanks 20 and 25 are formed of a material which is hardly corroded by an organic solvent such as hydrofluoric acid or IPA, for example, polyvinylidene fluoride.
- the inner tank 20 has a depth that allows a large amount of large-format wafer W, for example, about 30 Omm in diameter and about 50 sheets to be held by the holding tool 62 and immersed in the processing liquid to perform the processing, and the processing liquid discharge part is provided at the bottom thereof. 21 and a processing liquid supply unit 22 are provided.
- the substrate holder 62 uses, for example, a force set guide, and a plurality of wafers W are held in the cassette guide 62 in a state of standing upright at a constant pitch in parallel with each other.
- the substrate holder (cassette guide) 62 is connected to an elevating mechanism 60, which is provided with elevating means 61.
- the elevating means 61 moves the cassette guide 62 vertically and vertically.
- the transfer into and out of the tank 20 is performed.
- “Dry Position” indicates the position of the drying process
- “R inse Position” indicates the position of the cleaning process. Represents the location.
- the elevating means 61 for example, an air cylinder mechanism is used. Removal of the wafer assembly from the cassette guide 62 is performed by the moving mechanism 50.
- the moving mechanism 5 0 includes a robotic mechanism a plurality of which is connected to (not shown) gripping claws 5 0 There 5 0 2, these gripping claws 5 0 There 5 0 2, Uweha assembly is grasped, It is moved to a predetermined place.
- the processing solution discharge unit 2 1, as shown in FIG.
- the outer tank 25 functions as an overflow tank for receiving the processing liquid overflowing from the upper part of the inner tank 20.
- a discharge port 25 is provided at a lower position of the outer tank 25. As shown in FIG.
- the lid 30 is made up of a box-shaped container 31 having a size that can accommodate a ⁇ a-assembly W ′, which is formed by opening a lower part and closing an upper part, and collecting a large number of ⁇ e-was W therein.
- the container 31 is made of a material that is not easily corroded by an organic solvent such as hydrofluoric acid or IPA.
- the lid 30 can be moved horizontally by the moving means 55 (see FIG. 3).
- the moving means 55 closes or opens the opening of the inner tank 20 by moving the lid 30 to the upper part of the inner tank 20 in the horizontal direction as shown by the arrow in FIG.
- the lid 30 located above the inner tank 20 is vertically lifted by a predetermined distance, moved in the horizontal direction, and then lowered downward in the vertical direction to be kept in a standby state.
- the movement of the lid 30 is performed when the wafer assembly W ′ is carried into the inner tank 20 and the processed wafer assembly is removed from the inner tank 20.
- the box-shaped container 31 has a substantially arched ceiling surface 32 formed on an upper portion thereof, and a plurality of spray nozzles 3 3 for spraying an inert gas onto the ceiling surface 32. 1-3 3 7 are disposed in alignment in all directions at substantially equal intervals.
- the plurality of nozzles 3 3 As shown in FIG.
- a plurality at substantially equal intervals in a plurality of injection nozzle 3 3 i ⁇ 3 3 7 column direction arranged in substantially equal intervals in the row direction Rows are arranged.
- 7 nozzles arranged in the row direction have 6 columns, for a total of 42 nozzles.
- Each injection nozzle 3 3 is connected a gas supply pipe 3 4 2, the supply pipe 3 4 2 is branched, these branch pipes 3 4 2 1, 3 4 2 2 to the number of each injection nozzle 3 3 Numbers that are the same or nearly equal are combined. This makes it possible to distribute gas substantially evenly to each injection nozzle.
- Each of these injection nozzles 33 uses one in which the injection gas is diffused at a predetermined angle, and when the injection nozzles inject the gas to the outer periphery of the wafer assembly, the adjacent injection nozzles, for example you to configure as propellant gas between the injection nozzle 3 3 2 and injection nozzle .3 3 3 overlaps with the outer peripheral edge b of ⁇ E one tooth assemblies are preferred.
- an intermediate connecting member 26 and a perforated plate insertion mechanism 27 are provided between the inner and outer tanks 20 and 25 and the body 30.
- the intermediate connecting member 26 is formed of a cylindrical body having an opening having the same size as the lower opening of the lid 30. This cylindrical body is formed of a material that is not easily corroded by an organic solvent such as hydrofluoric acid IPA.
- the intermediate connecting member 26 is provided above the perforated plate insertion mechanism 27, and the lower opening 26 2 is positioned so as to substantially contact the upper surface of the frame 27 containing the perforated plate.
- the upper opening 26 is fitted with the lower opening 31 i of the box-shaped container 31.
- the lid 30 is directly It is also possible to omit the intermediate connecting member so as to fit in 27.
- the perforated plate 28 is a plate-shaped plate inserted between the inner and outer tanks 20 and 25 and the intermediate connecting member 26 in the step of drying the e-wafer assembly W, which has been subjected to the predetermined treatment. And a plurality of small holes formed in the plate-like surface.
- This perforated plate is made of a material that is not easily corroded by an organic solvent such as hydrofluoric acid or IPA.
- the multi-hole plate 28 is housed in a frame 27, connected to a moving mechanism (not shown), and slidably moved in the horizontal direction as shown in FIG.
- the frame 27 i for accommodating the perforated plate 28 has a predetermined vertical width (vertical direction), and the perforated plate 28 is a frame 27!
- the gap 2 7 2 for example of about 2 mm gap, in the drying step, a part of the drying gas is adapted to be discharged to the sink 2 9. Therefore, a gap X (this gap is represented by X in FIG. 8) is formed between the inner tank 20 and the lid 30, and the gap X defines the inner tank 20 and the lid 30.
- a processing liquid introduction pipe 22 is connected to the processing liquid supply section 22 provided at the bottom of the inner tank 20, and the introduction pipe 22 is connected to a pure water supply source via a flow control valve and a pump. 3 Connected to 8.
- the processing liquid introduction pipe 22 functions as a processing liquid supply system pipe, and the pipe, a flow control valve, and a pump constitute cleaning liquid supply means.
- the processing liquid introduction pipe 22 is similarly connected to a chemical supply source 39 via a flow control valve.
- the chemical solution supply source 39 includes a chemical solution preparation means (not shown) for adjusting a desired chemical solution to a predetermined concentration and a predetermined temperature.
- the chemical solution may be, for example, hydrofluoric acid, hydrochloric acid, hydrogen peroxide, sulfuric acid, ozone water, Ammonia water, surfactants, amine-based organic solvents, fluorinated organic solvents, electrolytic ionic water, etc.
- the processing fluid discharge section 2 1 provided at the bottom of the inner tank 2 0, as shown in FIG. 2, consists diameter of the discharge port 2 1 and the large diameter of the outlet. 2 1 2 which, ⁇ respectively Tank drain pipe 2 3 1
- a drain pipe 25 is connected to a lower position of the outer tank 25, and the drain pipe 25 is connected to a drain pipe 23.
- a vapor supply mechanism 37 is provided near the processing tank 15.
- the vapor supply mechanism 37 stores an organic solvent such as isopropyl alcohol (IPA) solvent, which has an extremely small surface tension, and is easy to mix with the adhering water remaining on the surface of the wafer W.
- IPA isopropyl alcohol
- the base over path generation tank 3 7 i is immersed in hot water heating tank 3 7 2, allowed to vaporize allowed heating an organic solvent.
- the vapor generation tank 37 and the organic solvent (IPA) supply source 36 are connected by a pipe 36i, and IPA is supplied to the vapor generation tank 37i.
- the vapor generating tank 3 7 The second nitrogen gas N 2 source 35, the branch pipes 35 ', from 3 5 1 2 are connected by.
- One branch pipe 3 5 1 2 vapor Nitrogen gas N 2 is sent to the bottom of the generating tank 37 i to generate bubbles in the IPA stored in the vapor generating tank 37, thereby promoting the evaporation of the IPA.
- the nitrogen gas N 2 supplied from 35 3 is used as a carrier gas.
- FIG. 6 shows a time chart of a series of processes
- FIG. 7 shows a washing / drying process
- FIG. 6 (a) shows a washing process
- FIG. 6 (b) shows a drying process 1
- FIG. Step 2 FIG. 4D is a cross-sectional view illustrating the drying step 3.
- the lid 30 of the processing tank 15 is opened, and the e-wafer assembly W ′ is accommodated in the inner tank 20.
- a desired chemical solution for example, hydrofluoric acid (HF)
- HF hydrofluoric acid
- pure water DIW is supplied from the pure water supply source 38 to the inner tank 20 through the treatment liquid introduction pipe 22 and the treatment liquid supply unit 22, as shown in FIG.
- This pure water supply is performed while overflowing the upper part of the inner tank 20. ⁇
- the pure water DIW overflowing from the tank 20 flows into the outer tank 25 and is discharged from the drain pipe 25 through the drain pipe.
- This pure water is supplied for a relatively long time, and the chemical solution HF remaining in the inner tank 20 is pushed out.
- the drying step 1 shown in Fig. 7 (b) the continuous supply of pure water DIW is stopped, and a small amount of pure water is supplied (water saving of DIW).
- the united W is pulled up slowly (Slow up Sed) by 20 inner tanks.
- IPA is supplied into the treatment tank 15, but a small amount of IPA can be supplied.
- the processing tank 1 5 bottom actuates the discharge port 2 1 2 drain mechanism valve of the processing liquid quickly discharged, the frame body 2 7 perforated plate 2 8 It is moved horizontally in i and inserted between the inner and outer tanks 20 and 25 and the intermediate connecting member 26. Further, a mixed gas of warmed nitrogen gas N 2 and IPA gas is supplied into the inner tank 20. These operations are performed simultaneously as shown in the chart. This nitrogen gas N 2 is heated in the vapor generation tank 37.
- the organic solvent vapor in the treatment tank 15 touches the surface of each wafer W, and the organic solvent vapor condenses on the surface of the wafer W to form a film of the organic solvent.
- (1) When an organic solvent film is formed on the surface of W, pure water that has adhered to EW until that time is replaced by the organic solvent, and the water flows down from the surface of A.
- nitrogen gas N 2 is supplied to dry the replaced IPA, and when the drying step 3 is completed, the wafer aggregate W, is taken out of the processing tank 15.
- the route shown in FIG. 8 was observed.
- FIG. 8 is a cross-sectional view schematically showing the flow of the drying gas in FIG. 7 (c).
- the drying gas IPA + Hot N 2
- IPA + Hot N 2 is injected from the injection nozzle 33 on the top of the lid 30 to the e-aerator assembly W.
- a gap X is formed between the inner tank 20 and the lid 30, and the gap X prevents the inner tank 20 and the lid 30 from being completely sealed without being completely sealed.
- the closed state that is, the space between the drying section and the cleaning section is in a semi-closed state. Therefore, a part of the dry gas injected into the wafer assembly W flows into the sink 29 from the gap X between the inner tank 20 and the lid 30.
- the processing tank 15 is installed in the air-conditioned accommodation room 11, air 12 a is blown from the air conditioner 12 above the accommodation room 11 in the downward direction of the arrow.
- drying gas discharged from the gap X is partly evacuated through line 2 2 2, the remaining gas stream with air 1 2 a to the sink 2 9, connected to the sink 2 9 Is exhausted by the exhaust device.
- the dry gas injected from the injection nozzle 3 3 is Since the gas is discharged through the gap x, the amount of gas flowing into the inner tank 20 is reduced accordingly. The amount released through this gap X is relatively large. Therefore, the dry gas can be exhausted without being affected by the fluctuation of the exhaust source in the exhaust treatment facility.
- the dry gas after the dry gas is injected into the wafer aggregate W ', a part of the dry gas is released from the gap X into the sink 29, so that the amount of gas flowing into the inner tank 20 is reduced accordingly. I have. For this reason, even if there is a change in the exhaust source, the dry gas can be exhausted smoothly without being significantly affected. More specifically, the provision of the gap X allows fluctuations in the exhaust source to be received in a wide space including the sink in addition to the inner and outer tanks. Since the influence can be reduced, and a large amount of clean air is supplied from above the accommodation room 11, the influence of the fluctuation can be further reduced.
- the perforated plate 28 since the perforated plate 28 has a plurality of small holes in the plate-like body, the dry gas passing therethrough is dispersed by the plurality of small holes, and the orifice effect causes the lid gas to cover.
- a large pressure difference is generated between the body 30 and the inner tank 20, that is, between the lid forming the drying chamber and the inner tank forming the cleaning chamber, and the drying gas in the drying chamber is generated. It is exhausted while flowing down smoothly. Therefore, the pressure of the lid 30 (drying section) is surely higher than the pressure of the tank 20 (cleaning section).
- the dry gas forms a laminar flow in the processing tank 15 and is smoothly exhausted.
- the exhaust gas is exhausted from the tube to the outside of the tank.
- the dry gas is uniformly supplied to the individual wafers, without forming a walk mark on the surface of the substrate, and removing particles from the substrate. Can also be prevented. In addition, redeposition of particles can be prevented. The reason is that the dry gas does not reflux in the treatment tank.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Cleaning In General (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03776030A EP1641032A1 (en) | 2003-07-02 | 2003-12-02 | Substrate processing method and substrate processing device |
AU2003284537A AU2003284537A1 (en) | 2003-07-02 | 2003-12-02 | Substrate processing method and substrate processing device |
KR1020057025472A KR101055465B1 (ko) | 2003-07-02 | 2003-12-02 | 기판 처리법 및 기판 처리 장치 |
US10/562,967 US7648580B2 (en) | 2003-07-02 | 2003-12-02 | Substrate processing method and substrate processing device |
IL172852A IL172852A0 (en) | 2003-07-02 | 2005-12-27 | Substrate processing method and substrate processing device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-190654 | 2003-07-02 | ||
JP2003190654A JP3560962B1 (ja) | 2003-07-02 | 2003-07-02 | 基板処理法及び基板処理装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005004217A1 true WO2005004217A1 (ja) | 2005-01-13 |
Family
ID=33028444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/015430 WO2005004217A1 (ja) | 2003-07-02 | 2003-12-02 | 基板処理法及び基板処理装置 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7648580B2 (ja) |
EP (1) | EP1641032A1 (ja) |
JP (1) | JP3560962B1 (ja) |
KR (1) | KR101055465B1 (ja) |
CN (1) | CN100380602C (ja) |
AU (1) | AU2003284537A1 (ja) |
IL (1) | IL172852A0 (ja) |
WO (1) | WO2005004217A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7637272B2 (en) | 2005-05-26 | 2009-12-29 | Semes Co., Ltd. | Method and apparatus for cleaning and drying substrates |
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JP4545083B2 (ja) * | 2005-11-08 | 2010-09-15 | 大日本スクリーン製造株式会社 | 基板処理装置 |
KR100784789B1 (ko) * | 2006-07-14 | 2007-12-14 | 세메스 주식회사 | 기판 처리 장치 및 방법 |
JP2008183516A (ja) * | 2007-01-30 | 2008-08-14 | Dainippon Screen Mfg Co Ltd | 乾燥空気供給装置およびこれを備えた基板処理装置 |
TWI406330B (zh) | 2007-09-26 | 2013-08-21 | Dainippon Screen Mfg | 基板處理裝置及基板處理方法 |
JP2009124025A (ja) * | 2007-11-16 | 2009-06-04 | Fujitsu Ltd | 洗浄乾燥装置及び洗浄乾燥方法 |
US20130081301A1 (en) * | 2011-09-30 | 2013-04-04 | Applied Materials, Inc. | Stiction-free drying of high aspect ratio devices |
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JP6367763B2 (ja) * | 2015-06-22 | 2018-08-01 | 株式会社荏原製作所 | ウェーハ乾燥装置およびウェーハ乾燥方法 |
JP6645900B2 (ja) * | 2016-04-22 | 2020-02-14 | キオクシア株式会社 | 基板処理装置および基板処理方法 |
TWI645913B (zh) * | 2016-11-10 | 2019-01-01 | 辛耘企業股份有限公司 | 液體製程裝置 |
JP2019054112A (ja) * | 2017-09-15 | 2019-04-04 | 株式会社Screenホールディングス | 基板乾燥方法および基板乾燥装置 |
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CN109887865B (zh) * | 2019-03-07 | 2021-08-20 | 上海华力微电子有限公司 | 一种晶圆清洗干燥装置、方法及化学机械研磨机台 |
US20210384049A1 (en) * | 2020-06-04 | 2021-12-09 | Tokyo Electron Limited | System and Method for Wet Chemical Etching in Semiconductor Processing |
US11315816B2 (en) * | 2020-06-10 | 2022-04-26 | Kla Corporation | Localized purge module for substrate handling |
JP7475252B2 (ja) * | 2020-10-02 | 2024-04-26 | 東京エレクトロン株式会社 | 基板処理装置、及び基板処理方法 |
CN116213356A (zh) * | 2022-12-23 | 2023-06-06 | 常州市潞星超声清洗科技有限公司 | 全自动液氢储罐超声波清洗系统 |
CN118089349B (zh) * | 2024-04-29 | 2024-07-19 | 江苏亚电科技股份有限公司 | 一种提拉干燥设备 |
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-
2003
- 2003-07-02 JP JP2003190654A patent/JP3560962B1/ja not_active Expired - Fee Related
- 2003-12-02 KR KR1020057025472A patent/KR101055465B1/ko active IP Right Grant
- 2003-12-02 US US10/562,967 patent/US7648580B2/en not_active Expired - Fee Related
- 2003-12-02 AU AU2003284537A patent/AU2003284537A1/en not_active Abandoned
- 2003-12-02 CN CNB200380110365XA patent/CN100380602C/zh not_active Expired - Lifetime
- 2003-12-02 WO PCT/JP2003/015430 patent/WO2005004217A1/ja active Application Filing
- 2003-12-02 EP EP03776030A patent/EP1641032A1/en not_active Withdrawn
-
2005
- 2005-12-27 IL IL172852A patent/IL172852A0/en unknown
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EP0580980A1 (en) * | 1992-07-27 | 1994-02-02 | Motorola, Inc. | A method for vapor drying |
EP0833376A2 (en) * | 1996-09-27 | 1998-04-01 | Tokyo Electron Limited | Apparatus for and method of cleaning objects to be processed |
EP0832697A2 (en) * | 1996-09-27 | 1998-04-01 | Tokyo Electron Limited | Apparatus for and method of cleaning objects to be processed |
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US7637272B2 (en) | 2005-05-26 | 2009-12-29 | Semes Co., Ltd. | Method and apparatus for cleaning and drying substrates |
Also Published As
Publication number | Publication date |
---|---|
CN1791968A (zh) | 2006-06-21 |
EP1641032A1 (en) | 2006-03-29 |
US7648580B2 (en) | 2010-01-19 |
KR20060030070A (ko) | 2006-04-07 |
IL172852A0 (en) | 2006-06-11 |
CN100380602C (zh) | 2008-04-09 |
US20060162745A1 (en) | 2006-07-27 |
AU2003284537A1 (en) | 2005-01-21 |
JP3560962B1 (ja) | 2004-09-02 |
JP2005026478A (ja) | 2005-01-27 |
KR101055465B1 (ko) | 2011-08-08 |
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