WO2006018948A1 - 対象物処理装置およびその方法 - Google Patents
対象物処理装置およびその方法 Download PDFInfo
- Publication number
- WO2006018948A1 WO2006018948A1 PCT/JP2005/013372 JP2005013372W WO2006018948A1 WO 2006018948 A1 WO2006018948 A1 WO 2006018948A1 JP 2005013372 W JP2005013372 W JP 2005013372W WO 2006018948 A1 WO2006018948 A1 WO 2006018948A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nozzle
- spraying
- processing
- processing apparatus
- water
- Prior art date
Links
- 238000012545 processing Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 238000005507 spraying Methods 0.000 claims abstract description 43
- 238000004140 cleaning Methods 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000004065 semiconductor Substances 0.000 claims description 33
- 239000006227 byproduct Substances 0.000 claims description 32
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 230000008569 process Effects 0.000 claims description 26
- 238000005530 etching Methods 0.000 claims description 22
- 239000000758 substrate Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 238000002161 passivation Methods 0.000 claims description 12
- 238000011282 treatment Methods 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 5
- 238000003672 processing method Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005498 polishing Methods 0.000 abstract description 7
- 239000012298 atmosphere Substances 0.000 abstract description 4
- 239000010408 film Substances 0.000 description 40
- 239000000463 material Substances 0.000 description 15
- 239000002699 waste material Substances 0.000 description 13
- 229910021642 ultra pure water Inorganic materials 0.000 description 12
- 239000012498 ultrapure water Substances 0.000 description 12
- 235000012431 wafers Nutrition 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000012530 fluid Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000003044 adaptive effect Effects 0.000 description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- -1 hydrogen ions Chemical class 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010517 secondary reaction Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 238000005406 washing Methods 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
- H01L21/67—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
- H01L21/02—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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
- H01L21/0206—Cleaning during device manufacture during, before or after processing of insulating layers
- H01L21/02063—Cleaning during device manufacture during, before or after processing of insulating layers the processing being the formation of vias or contact holes
-
- 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
- H01L21/02068—Cleaning during device manufacture during, before or after processing of conductive layers, e.g. polysilicon or amorphous silicon layers
- H01L21/02071—Cleaning during device manufacture during, before or after processing of conductive layers, e.g. polysilicon or amorphous silicon layers the processing being a delineation, e.g. RIE, of conductive layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67253—Process monitoring, e.g. flow or thickness monitoring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
- B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
- B05B7/0475—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the peripheral gas flow towards the central liquid flow
Definitions
- the present invention relates to an apparatus or method for processing a predetermined part or a predetermined surface of a target object, such as a semiconductor substrate, a Z glass substrate, a Z lens, a Z disk member, a Z precision machined member, a z mold grease member, etc. Therefore, the processing of the object is related to an apparatus or method for cleaning a part or surface, removing or removing unnecessary material there, and polishing or processing the surface of the object. More specifically, for example, in a semiconductor manufacturing process in which a fine structure is formed on the surface of an object, the object processing apparatus and method for removing the unnecessary material that is generated has a certain force in the etching process.
- the present invention relates to an apparatus or method that can efficiently strip or remove unnecessary substances called reaction by-products and sidewall protective films generated from a film to be etched.
- reaction by-products are generated from the etching target film.
- the reaction by-product has a protective effect on the side wall, so it tends to be used by a method such as shape control.
- dry plasma ashing or chemicals are added to the reaction by-product. Techniques for stripping or removing the product are commonly used.
- the present invention has been made in view of such problems.
- the part or surface is washed, and unnecessary objects are removed or removed from the object.
- Processes such as surface polishing and processing can be carried out more reliably and efficiently, and the target objects are semiconductor substrates (silicon, etc.), glass substrates for liquid crystals, lens products such as cameras, CDs and DVDs, etc. Discs, precision machined parts, mold cartridge parts, etc.
- the object is to provide an object processing method or method that can be applied to any wider field.
- An object disposition unit (for example, a stage unit) that disposes the object in a predetermined atmosphere, and a nozzle unit that mixes the supplied steam and water (may be pure water or ultrapure water) and sprays the object on the object ,
- the relative positional relationship between the object placement portion and the nozzle portion is regularly changed.
- the relative movement speed (scan speed) to the desired value.
- each parameter of the gap between the nozzle outlet and the object is controlled.
- the value of each parameter at that time is
- the pressure of steam supplied to the nozzle is 0.1 ⁇ 0.5 ⁇ «3 ⁇ 4,
- the flow rate (flow rate) of ultrapure water supplied to the nozzle is 50 to 1000 cc / min, and the spraying time is 10 to 600 sec.
- the area of the nozzle outlet is 1 ⁇ : L00mm 2 ,
- Scan speed is 10 ⁇ 300mm / sec
- the shape of the outlet of the nozzle portion may be various cross-sectional shapes such as a round shape, a square shape, a rectangular shape, a flat rectangular shape, an elliptical shape, a flat elliptical shape, and a slit shape.
- the object is any one of a semiconductor substrate, a Z glass substrate, a Z lens, a Z disk member, a Z precision machining member, a Z mold grease member,
- the treatment of the object may be performed by cleaning the part or surface to be treated, Is the removal of waste on the surface.
- the object placement unit includes a stage-type placement member or a conveyor-type placement member that performs a shift operation or a plurality of operations of rotation Z rotation Z movement.
- stage-type arrangement member there is a stage unit that mounts (attaches) an object and rotates or rotates around an axis.
- a conveyor-type arrangement member there is a belt conveyor that moves or conveys an object by placing (attaching) an object on a movable belt.
- the object is a semiconductor device having either a high dielectric layer Z passivation film Z metal layer as a part or surface to be processed,
- the object is a semiconductor device having a “high dielectric layer” as a layer to be processed, and the waste is a reaction by-product generated after etching the high dielectric layer;
- the flow rate of ultra pure water (flow rate) is 100-500cc / min,
- the area of the nozzle outlet is 1 ⁇ : L00mm 2 ,
- the spraying time is 120-300sec
- Scan speed is 40 ⁇ : LOOmm / sec
- the gap may be controlled to 5-30 mm.
- the object is a semiconductor device having a “passivation film”, and the unnecessary object is a reaction by-product generated after the etching process of the passivation film.
- the unnecessary object is a reaction by-product generated after the etching process of the passivation film.
- the flow rate of ultra pure water (flow rate) is 100-500cc / min,
- the area of the nozzle outlet is 1 ⁇ : L00mm 2 ,
- Spraying time is 60 ⁇ : 120sec
- Scan speed is 40 ⁇ : 100mm / sec
- the gap may be controlled to 5-30 mm.
- the object is a semiconductor device having a “metal layer”
- the waste is a reaction by-product generated after the etching process of the metal layer.
- the flow rate of ultra pure water (flow rate) is 100-500cc / min,
- the area of the nozzle outlet is 1 ⁇ : L00mm 2 ,
- the spraying time is 30 to 120 seconds
- Scan speed is 40 ⁇ : 100mm / sec
- the gap may be controlled to 5-30 mm.
- the pressure of steam supplied to the nozzle is 0.1 ⁇ 0.5 ⁇ «3 ⁇ 4,
- the flow rate (flow rate) of ultrapure water supplied to the nozzle is 50 to 1000 cc / min, and the spraying time is 10 to 600 sec.
- the area of the nozzle outlet is 1 ⁇ : L00mm 2 ,
- Scan speed is 10 ⁇ 300mm / sec
- the “object” is not particularly limited, and examples thereof include a semiconductor substrate, a glass substrate, a lens, a disk member, a precision machined member, and a mold grease member.
- the “treatment” is not particularly limited as long as it is applied to an object, and examples thereof include peeling, washing, and calorific work.
- the term “unnecessary” refers to various unnecessary items generated during the processing of an object. For example, in a semiconductor device manufacturing process, a resist film, an etching residue after dry etching, and a chemically altered resist. A film etc. can be illustrated.
- the object processing apparatus and method according to the present invention include high-pressure steam (steam) and water (which may be pure water or ultrapure water) mixed in a nozzle and blown out to an object such as a wafer.
- steam steam
- water which may be pure water or ultrapure water
- various parameter conditions are defined, and the processing time can be precisely controlled in combination with the peripheral speed control method, so that the processing of the object is extremely effective. Can be done.
- the parameters used here are steam pressure conditions, DIW (pure water) flow, nozzle area, nozzle-to-object (wafer, etc.) distance, removal (processing) time, and scanning speed. .
- the object processing according to the present invention includes cleaning a predetermined portion or surface of a semiconductor substrate, peeling or removing unnecessary substances such as reaction by-products and foreign substances, cleaning a liquid crystal glass substrate, and removing foreign substances. Removal, camera lens cleaning and foreign matter removal, removal of foreign matter from machined parts Lastly, there is removal of mold grease, etc., but the present invention is particularly suitable for processing an object having a material strength that hate chemicals.
- the present invention enables peeling at a low pressure when compared with the conventional high-pressure water blowing method, can suppress damage to an object such as a wafer, and the peeling main component is water. Therefore, it is possible to significantly reduce working capital without requiring excessive capital investment.
- FIG. 1 is an overall view of an object processing apparatus according to an embodiment of the present invention
- FIG. 2 is an explanatory view showing the structure of a nozzle used in an embodiment of the present invention in cross section
- FIG. FIG. 4 is a diagram for explaining the operation control of the nozzle unit and the stage unit (object placement unit) in the embodiment
- FIG. 4 is a diagram for explaining a situation in which the nozzle scans on the object in the embodiment of the present invention.
- 5 to 7 are views showing a cross-sectional structure of an object to be processed in one embodiment of the present invention.
- This vibration causes water molecules H 2 O to become hydrogen ions H + and hydroxide ions OH—.
- Hydrogen ions H + and hydroxide ions are very unstable, so they try to return to the water molecule H 2 O. The high energy generated at this time is converted into mechanical shock.
- this basic principle (thermal effect phenomenon) is used to generate a cavity and thereby perform processing such as removal of unnecessary materials on the surface of the processing object.
- wastes are those produced in semiconductor devices after the etching process of the high dielectric layer.
- reaction by-products reaction by-products generated after etching the passivation film, and reaction by-products generated after etching the metal layer.
- FIG. 1 is an overall view of an object processing apparatus 100 according to an embodiment of the present invention.
- This apparatus 100 includes a nozzle 101, an operation valve 103, a water flow meter 105, a stop valve 107a-b, a water pressurization tank 111, a water vapor supply device 113, a water supply pipe 115a-b, a nitrogen supply pipe 11 7, a pressure reducing valve 119.
- the compression hose 121 to 123 and the stage 131 are configured.
- An object to be processed (herein referred to as “wafer”) 133 is arranged and fixed on stage 1 31.
- the nozzle 101 is arranged so as to blow out facing the processing surface of the processing object 133, and generates a cavity jet.
- the water pressurization tank 111 pressurizes pure water supplied from the water supply pipe 115b to a predetermined value Al (MP), and supplies a predetermined flow rate Bl (lZmin) of the pressurized pure water to the pressure hose. It is sent out to nozzle 101 in a high-pressure state via 121.
- pure water is usually used as pure water or ultra-pure water in the cleaning process of semiconductor device manufacturing! It only has to be.
- the water flow meter 105 measures the flow rate of pure water supplied from the water pressure tank 111 to the nozzle 101.
- the operator can check the flow rate with the water flow meter 105 and adjust it to a desired value using the operation valve 103.
- the supply of pure water can be stopped or restarted by opening and closing the stop knob 107a.
- the water vapor supply device 113 heats pure water supplied from the water supply pipe 115a to a predetermined temperature D 1 (° C) or higher to generate water vapor, and the pure water is supplied to the predetermined value according to the amount of generated water vapor. After pressurizing Cl (MP), it is sent to the nozzle 101 through the pressure hose 123 in a high pressure state.
- the pressure gauge 120 measures the pressure of water vapor supplied from the water vapor supply device 113 to the nozzle 101. The operator can check the pressure with the pressure gauge 120 and adjust it to a desired value using the pressure reducing valve 119. In addition, the supply of water vapor can be stopped or restarted by opening and closing the stop knob 107b.
- a thermal effect phenomenon occurs due to the pure water supplied from the water pressurizing tank 111 and the water vapor supplied from the water vapor supply device 113. After that, the heat effect phenomenon A closed cavity jet is sprayed onto the surface of the object to be treated. Then, the surface of the object to be processed is eroded by the high impact force generated when the bubbles caused by the cavity disappear, and processing such as cleaning and polishing / grinding is performed, and unnecessary materials are removed.
- nitrogen can be supplied from the nitrogen supply pipe 117 to the water pressurization tank 111, and thus other gases or chemicals (for example, CO 2, O 2, N 1, O 2, H 2, Alkali, acid,
- FIGS. 2 (a), 2 (b), and 2 ( C ) are cross-sectional views showing a specific example of the structure of a nozzle that is preferably used in an embodiment of the object processing apparatus according to the present invention.
- the nozzle 101a in FIG. 2 (a) has two flow paths (121 and 12 3) connected so that an external force can also flow into the internal space a3 of the substantially cylindrical nozzle body al whose upper surface is closed. ), And an internal space a3 for mixing therethrough via the fluids, and a blowout port a2 having a circular cross section for ejecting the mixed fluid downward.
- the inner wall surface of the nozzle body al is provided with two outlets (vl and wl), from which the fluid flows into the internal space a3.
- the outlet vl is connected to the steam supply device 113 via a pressure hose (flow path) 123, and the force blows out the steam, and the outlet wl passes through the pressure hose (flow path) 121. It is configured to be connected to the water pressurization tank 111 !, the lever force also blows out pure water (DIW), and in the internal space a3, the water vapor and pure water are mixed and blown out from the outlet a2. ing.
- DIW pure water
- the outlets (vl and wl) provided in the nozzle 101a are opened from the side closer to the downward outlet a2 in the order of the outlet wl—outlet vl. It is arrange
- the shape (cross section) of the nozzle outlet is, for example, a slit-like flat oval or rectangular shape, and the cross-sectional area can be 12 mm 2 corresponding to 2 mm ⁇ 6 mm. Sarasako, Blowout When the loca is blown out toward the target, the blowout angle can be set in a downward-opening skirt shape.
- the jet port angle of the guide portion at that time may be set to 120 °, for example.
- the nozzle 101b in Fig. 2 (b) has a substantially cylindrical nozzle body bl whose upper surface and part of the side surface are open (opened). There are two flow paths (121 'and 123') that are connected to let the fluid flow in, and the fluid is blown into the internal space b3 and mixed, and then blown down from the blowout port b2 It is composed.
- the blowout port v2 provided in the upper surface of the nozzle body bl is connected to the steam supply device 113 via a pressure-resistant hose (flow path) 123 ′, and the force also blows off the steam.
- pure water (DIW) is guided from a blowout port w2 provided by opening a part of the side wall surface of the nozzle body bl by a pressure hose (flow path) 121 'connected to the water pressurization tank 111.
- pure water (DIW) is blown out into the internal space b3.
- the nozzle 101c in Fig. 2 (c) has a substantially cylindrical nozzle body cl having an open (opened) part of the upper surface and side surfaces, and has an internal space c3 from above and from the side of the drawing. It has two channels (121 "and 123") connected to allow fluid to flow in.
- the flow path 123 "provided on the side of the nozzle body cl blows fluid from the outlet v3 into the internal space c3, and the flow path 12 1" penetrates from above the nozzle body cl into the internal space c3.
- the blowout port v3 opened in the side wall is connected to the water vapor supply device 113 via a pressure-resistant hose (flow path) 123 ", and blows out water vapor therefrom.
- the pressure hose 121 "introduced into the interior is connected to the water pressurizing tank 111, and pure water (DIW) is introduced into the internal space c3 through this.
- DIW pure water
- the shape (cut surface) of the nozzle outlet (a2, b2, c2) is, for example, a slit-like flat
- the nozzle part is blown out as an oval or rectangular shape
- the cross-sectional area of the mouth can be appropriately set within the range of 1 to: LOOmm 2 and used.
- the cross-sectional shape of the air outlet of the nozzle part is not limited to the above, and for example, a circular (round) shape may be used. If a round shape of 3 to 10 mm ⁇ is adopted, the outlet area (cross-sectional area) of this outlet is 9.42 to 78.5 mm 2 .
- FIG. 3 is a view for explaining the relative operation, that is, the scanning operation of the nozzle unit 201 and the stage unit 231 in the embodiment of the present invention, and the inside of the processing chamber 300 is processed in a predetermined atmosphere.
- a stage unit 231 for arranging and holding the target object 233, a nozzle unit for internally mixing the steam supplied from the flow path 223 and the pure water supplied from the flow path 221 and spraying the target object 233 201, and a flow path 301 for waste liquid and exhaust is provided on the lower side thereof.
- An object 233 to be processed (for example, a substantially disk-shaped semiconductor wafer) is disposed on the stage unit 231.
- the stage unit 2 is arranged so that the object 233 is not displaced during processing.
- 31 may be integrally coupled to the upper surface by a fixing means or a locking means.
- the stage portion 231 is fixedly supported by a support shaft 231 ′ extending downward from its center, and the stage portion 231 is integrally operated in accordance with the rotation or rotation of the support shaft 231 ′. Is configured to do.
- the operation direction is indicated as R1.
- the nozzle unit 201 sprays vertically from the upper surface of the object 233 on the stage unit 231. At this time, the distance between the nozzle port 201c and the upper surface of the object 233 is expressed as a gap G. Is done.
- the nozzle unit 201 here is designed to be movable by itself, and can perform a rotation (turning) operation and a Z or position movement operation. In FIG. 3, it is assumed that the nozzle part 201 can move linearly in the horizontal direction while maintaining the gap G at a predetermined value until the center position cl force on the stage part 231 also reaches the end position T1. Show the trajectory (direction) of the movement as M 1!
- the nozzle unit 201 performs a linear and regular movement operation (operation direction Ml), and the stage unit 231 performs a regular rotation operation (operation direction R1).
- the nozzle portion 201 can be sprayed while regularly scanning the entire surface of the object 233 on the object 233, and the scanning speed can be increased by the positional relationship between the nozzle portion 201 and the stage portion 231. It can be controlled to a desired value.
- the movement operation of the nozzle unit 201 and the rotation operation of the stage unit 231 are combined so as to synchronize with each other, and both are operated simultaneously, and the target 233 is scanned to obtain a desired It can be controlled to obtain scanning speed, but it is not limited to this. That is, while the stage portion 231 is fixed, only the nozzle portion 201 can be moved alone, and a movement operation and a rotation operation can be combined to perform an operation of scanning the entire processing surface of the object 233. On the other hand, with the nozzle unit 201 fixed, only the stage unit 231 can be moved independently, and a mechanism that enables not only the rotation operation but also the movement operation is provided, and the rotation and movement are combined in synchronization. An operation of scanning the entire processing surface of the object 233 can also be performed. As described above, the operations of the nozzle unit 201 and the stage unit 231 may be appropriately combined in accordance with the scanning specification and designed to obtain a desired scanning speed.
- the object to be processed has a circular shape
- the entire area of one side of the object is the processing target surface, and all the regions of the processing target surface are evenly distributed.
- Control is performed to scan the
- the central force of a circular object can be set so that a desired scanning speed can be obtained by combining the operation of linearly moving the nozzle unit 201 in the circumferential direction and the operation of rotating the stage unit 231. The trajectory of scanning at that time becomes a kana-like shape.
- 4 (a) and 4 (b) are diagrams showing the scanning status of a rectangular object.
- FIG. 4 (a) is a diagram showing an example of a scanning locus for a rectangular object 233a. By moving both or one of the nozzle part 201 and the stage part 231, scanning like the locus S 1 can be obtained.
- FIG. 4 (b) is a diagram showing an example of a scanning trajectory with respect to the rectangular object 233b. For example, as in the case of a circular object, the central force of the object also causes the nozzle part 201 to end. This is a combination of the movement that moves linearly in the direction and the movement that rotates the stage part 231 to obtain the desired scanning speed. The scanning trajectory at this time is also a fine spiral. .
- the object processing apparatus or method as described above is used, and a semiconductor wafer, 'IC circuit', 'micro structure', liquid crystal, or the like is used as a processing object, and an unnecessary object generated there is effectively used.
- a semiconductor wafer, 'IC circuit', 'micro structure', liquid crystal, or the like is used as a processing object, and an unnecessary object generated there is effectively used.
- the pressure of steam supplied to the nozzle is 0.1 ⁇ 0.5 ⁇ «3 ⁇ 4,
- the flow rate (flow rate) of ultrapure water supplied to the nozzle is 50 to 1000 cc / min, and the spraying time is 10 to 600 sec.
- the area of the nozzle outlet is 1 ⁇ : L00mm 2 ,
- Scan speed is 10 ⁇ 300mm / sec
- the pressure of steam supplied to the nozzle is 0.1 to 0.5 MPa. If it is less than the adaptive value, the physical strength is reduced due to a reduction in striking performance against the reaction by-product and cannot be removed. When the value is higher than the adaptation value, the striking force is inadvertently increased, causing damage to the membrane (tissue). In addition, excessive heat generation causes hardening or alteration. [0042] ⁇ Flow rate of pure water
- the flow rate (flow rate) of pure water (DIW) is 50 to 1000cc / min. If it is less than the optimum value, only steam (steam) is produced, and the nozzle jet particle size is too fine to reduce the striking component and cannot be removed. When the value is higher than the adaptive value, the particle size of the nozzle force increases due to mixing of steam (steam) and pure water (DIW), and damages the film.
- the spraying time is 10 to 600 seconds. Reaction by-products are likely to remain if the value is below the adaptation value. If the value is above the adaptation value, it can be removed, but it is likely to cause other secondary problems due to thermal effects. Also, this spraying time parameter is a major factor that directly affects the processing capacity of the equipment, and it is problematic that the spraying time is too long.
- the area of the nozzle outlet is 1 to: LOOmm 2 is the applicable value. If the value is below the adaptive value, the area of the air outlet is small and the striking force is partially increased, but there is a risk of causing damage to the membrane (tissue). There is a high possibility that a waste will be left in the removal of waste. In addition, when the value exceeds the adaptation value, the area of the outlet is too large, and the mixed particle size of steam (steam) and pure water (DIW) ejected from the nozzle diffuses to reach the target object. However, if the striking performance is reduced, it becomes difficult to remove unnecessary materials.
- the scanning speed is 10 to 300 mm / sec.
- careless nozzle ejection per unit time increases the irradiation time, and the possibility of causing damage other than removing unnecessary materials by heat and excessive striking force increases. If the value is higher than the adaptive value, the nozzle ejection time per unit time is shortened and the striking force is insufficient, so it is impossible to remove the waste.
- the gap (distance) between the nozzle mouth and the object is 3 to 30 mm. If the value is less than the adaptive value, the nozzle force ejection area becomes smaller and the relationship force between the object and the ejection distance becomes smaller, which is an unnecessary object. There is a high possibility that there is a rest in the removal. In addition, when the value exceeds the applicable value, the mixing particle size of steam (steam) ejected from the nozzle and pure water (DIW) decreases the striking performance until it reaches the target. Things tend to be difficult to remove.
- Figs. 5 to 7 are diagrams showing a state in which specific processing is performed on three types of objects having different structures to which the present invention is applied.
- An object 500 shown in FIGS. 5 (1) to (3) is a semiconductor device (wafer) having a high dielectric layer as a layer to be processed, and includes a resist (mask) layer 11 and a high dielectric layer (BST). (Or SBT) 12, an AU film, or a Pt film of a thin film layer made of a metal film 13 is laminated on the substrate 14.
- FIG. 5 (1) shows a state before the object 500 is etched, and the resist (mask) layer 11 has an opening K1.
- FIG. 5 (2) shows the state after etching.
- the portion K1 ′ of the high dielectric layer 12 in the position directly below the opening K1 of the resist (mask) layer 11 is opened.
- secondary reaction by-product F1 is generated on the wall of the site ( ⁇ + ⁇ ') and remains in the form of a fence.
- FIG. 5 (3) shows that a “steam + pure water mixed spraying process” is performed by the object process to which the present invention is applied, and the reaction (by-product) F1 that is an unnecessary material with the resist (mask) layer 11 is obtained. Indicates a state where and are removed.
- the vapor pressure is 0.2 to 0.3 MPa and ultrapure water is applied when sprayed.
- flow rate is 100 ⁇ 500cc / min, the area of the air outlet of the nozzle section 1 to 100 mm 2, spraying time 120 ⁇ 300Sec, scan speed 40 to 100 mm / sec, the gap 5 ⁇ : LOmm / sec , The waste removal effect is high.
- An object 600 shown in FIGS. 6 (1) to (3) is a semiconductor device having a passivation film as a layer to be processed, and has a structure suitable for a wire bonding Z bump.
- This object 600 has a thin film layer consisting of a resist (mask) layer 21, a protective film (passivation film) 22, a wiring film (Al) 23, and an insulating film (SiO2 oxide film) 24 on a substrate 125.
- FIG. 6 (1) shows a state before the object 600 is etched, and the resist (mask) layer 21 has an opening K2.
- Fig. 6 (2) shows the state after etching.
- a portion K2 ′ of the passivation film 22 located immediately below the opening K2 of the resist (mask) layer 11 is opened, and a secondary reaction by-product is formed on the wall of the portion (K2 + K2 ′).
- Material F2 is generated and remains in the form of a fence.
- FIG. 6 (3) shows that the “steam + pure water mixed spraying process” is performed by the object process to which the present invention is applied, and the reaction (by-product) which is an unnecessary material with the resist (mask) layer 21. The state where F2 is removed is shown.
- the vapor pressure is 0.15 to 0.3 MPa, and ultrapure water is used for spraying.
- Flow rate is 100 ⁇ 500cc / min, nozzle outlet area is 1 ⁇ : L00mm 2 , spraying time is 60 ⁇ 120sec, scan speed is 40 ⁇ : LOOmm / sec, gap is 5 ⁇ : LOmm / If it is controlled to sec, the effect of removing unnecessary materials is high.
- the object 700 shown in FIGS. 7 (1) to (3) is a semiconductor device having metal layers as layers to be processed, and has a structure in which openings are formed in these metal layers by etching. have.
- This object 700 has a thin film layer consisting of a resist (mask) layer 31, a wiring film (Al) 32, a protective film (TwZ Ti film) 33, and an insulating film (SiO 2 oxide film) 34 on a substrate 35. Stacked structure
- FIG. 7 (1) shows a state before the object 500 is etched, and the resist (mask) layer 31 has an opening K3.
- FIG. 6 (2) shows the state after etching.
- the wiring film (Al) 32 and the protective film (TwZTi) located immediately below the opening K2 of the resist (mask) layer 31 are in contact with each other.
- the secondary reaction by-product F3 is generated on the wall surface of the hole (K3 + K3 ') and remains in a fence shape.
- FIG. 7 (3) shows that a “steam + pure water mixed spraying process” is performed by the object processing to which the present invention is applied, and the resist (mask) layer 31 and unnecessary reaction by-products F3. Indicates a state where and are removed.
- the vapor pressure is 0.1 to 0.2 MPa and ultrapure water is used for spraying.
- flow rate is 100 ⁇ 500cc / min, the area of the air outlet of the nozzle portion 1 ⁇ : L00mm 2, spraying time 30 ⁇ 120Sec, scan speed 40 ⁇ : L00mm / sec, the gap 5 ⁇ : L0mm / If it is controlled to sec, the effect of removing unnecessary materials is high.
- FIGS. 5 to 7 show, as objects, (object 1) a semiconductor device having a high dielectric layer, (object 2) Wire bonding A semiconductor device with a passivation film suitable for Z-bumps, (object 3) a semiconductor device with a metal etching layer, is shown as an example. Therefore, the difference between the processing conditions of each object will be described.
- the pressure of steam at the object 1 is 0.2 to 0.3 MPa
- the object 2 is 0.15 to 0.3 MPa
- the object 3 is 0.1 to 0.2 MPa.
- the high dielectric film has high resistance to the temperature associated with the vapor pressure due to the characteristics of the high dielectric film.
- the aluminum used for wiring has high vapor density and easily generates aluminum hydroxide due to the synergistic effect with temperature! Therefore, it is better to process at a slightly lower pressure than the object 1.
- the spraying time for the object 1 is 120 to 300 seconds, the object 2 is 60 to 300 sec, and the object 3 is 30 to 120 seconds.
- the object 2 uses aluminum for the wiring, if treatment for 60 seconds or more is performed, hydroxide-aluminum is generated on the aluminum side wall, and the aluminum surface is damaged.
- the object 1 having a high dielectric film does not use aluminum, and the reaction by-product is strong and difficult to remove. Therefore, it is preferable to increase the time.
- MEMS Micro Electro Mechanical System
- the present invention is applied as a means or method for removing or deburring reaction by-products in a microstructure using silicon process technology.
- the present invention is applied as a means or method for removing a chip in an IC finishing process.
- the present invention can be applied to objects such as semiconductor devices, liquid crystals, magnetic heads, disks, printed circuit boards, cameras and other lenses, precision machined parts, molded resin products, etc. ⁇ Processing such as cleaning and polishing can be performed more effectively, and the present invention is also used as a deburring method in the fields of microstructures and mold caches using silicon process technology. can do. Furthermore, the present invention is particularly suitable for the treatment of materials that dislike chemicals.
- FIG. 1 is an overall view of an object processing apparatus showing an embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing a nozzle structure according to an embodiment of the present invention.
- FIG. 3 is an operation explanatory diagram of a nozzle part and a stage part (object placement part) in an embodiment of the present invention.
- FIG. 4 is a diagram for explaining a relative operation state (scanning state) of an object in one embodiment of the present invention.
- FIG. 5 is a cross-sectional view showing the structure of an object 500 in one embodiment of the present invention.
- FIG. 6 is a cross-sectional view showing the structure of an object 600 in one embodiment of the present invention.
- FIG. 7 is a cross-sectional view showing the structure of an object 700 in one embodiment of the present invention.
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- 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 By Liquid Or Steam (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006531376A JPWO2006018948A1 (ja) | 2004-08-20 | 2005-07-21 | 対象物処理装置およびその方法 |
US11/660,477 US20080035754A1 (en) | 2004-08-20 | 2005-07-21 | Device for Treating Object and Process Therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004241004 | 2004-08-20 | ||
JP2004-241004 | 2004-08-20 |
Publications (1)
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WO2006018948A1 true WO2006018948A1 (ja) | 2006-02-23 |
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ID=35907339
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PCT/JP2005/013372 WO2006018948A1 (ja) | 2004-08-20 | 2005-07-21 | 対象物処理装置およびその方法 |
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Country | Link |
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US (1) | US20080035754A1 (ja) |
JP (1) | JPWO2006018948A1 (ja) |
KR (1) | KR20070052321A (ja) |
TW (1) | TW200608453A (ja) |
WO (1) | WO2006018948A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008288355A (ja) * | 2007-05-17 | 2008-11-27 | Disco Abrasive Syst Ltd | 加工装置 |
WO2010071005A1 (ja) * | 2008-12-15 | 2010-06-24 | アクアサイエンス株式会社 | 対象物洗浄方法及び対象物洗浄システム |
JP2010528459A (ja) * | 2007-05-18 | 2010-08-19 | エフエスアイ インターナショナル インコーポレーテッド | 水蒸気または蒸気を用いた基板の処理方法 |
JP2013187281A (ja) * | 2012-03-07 | 2013-09-19 | Disco Abrasive Syst Ltd | 被加工物の加工方法 |
JP2015062956A (ja) * | 2012-09-19 | 2015-04-09 | 株式会社荏原製作所 | 研磨装置 |
JP2017159201A (ja) * | 2016-03-07 | 2017-09-14 | セイコーインスツル株式会社 | ワーク洗浄装置、及びワーク洗浄方法 |
Families Citing this family (7)
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JP5494743B2 (ja) | 2011-10-14 | 2014-05-21 | 株式会社デンソー | カメラ洗浄装置 |
TWI462148B (zh) * | 2013-07-10 | 2014-11-21 | Fluid nozzle and fluid nozzle device | |
US20150349706A1 (en) | 2014-06-03 | 2015-12-03 | Sunpower Corporation | Solar module cleaner |
CN106057710B (zh) * | 2016-08-02 | 2019-02-19 | 北京七星华创电子股份有限公司 | 改善气液两相雾化清洗均匀性的装置和方法 |
KR102100758B1 (ko) * | 2016-09-08 | 2020-04-14 | 주식회사 뉴파워 프라즈마 | 초음파 진동을 이용한 수증기 분사 장치 |
CN109560020B (zh) * | 2018-09-27 | 2022-12-16 | 厦门市三安集成电路有限公司 | 一种使用nmp蒸汽剥离晶圆金属膜的结构和方法 |
CN113118104A (zh) * | 2019-12-31 | 2021-07-16 | 苏州阿洛斯环境发生器有限公司 | 一种多通超声驱动控制微液滴集群清洗*** |
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JP3343013B2 (ja) * | 1995-12-28 | 2002-11-11 | 大日本スクリーン製造株式会社 | 基板洗浄方法及びその装置 |
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2005
- 2005-06-16 TW TW094119958A patent/TW200608453A/zh unknown
- 2005-07-21 US US11/660,477 patent/US20080035754A1/en not_active Abandoned
- 2005-07-21 KR KR1020077006392A patent/KR20070052321A/ko not_active Application Discontinuation
- 2005-07-21 JP JP2006531376A patent/JPWO2006018948A1/ja active Pending
- 2005-07-21 WO PCT/JP2005/013372 patent/WO2006018948A1/ja active Application Filing
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JPH08148459A (ja) * | 1994-11-18 | 1996-06-07 | Toshiba Corp | 半導体基板の洗浄方法 |
JPH1085634A (ja) * | 1996-09-12 | 1998-04-07 | Toshiba Corp | 噴流加工装置、噴流加工システムおよび噴流加工方法 |
JP2003249474A (ja) * | 2002-02-18 | 2003-09-05 | Lam Res Corp | 水供給装置および水供給方法 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008288355A (ja) * | 2007-05-17 | 2008-11-27 | Disco Abrasive Syst Ltd | 加工装置 |
JP2010528459A (ja) * | 2007-05-18 | 2010-08-19 | エフエスアイ インターナショナル インコーポレーテッド | 水蒸気または蒸気を用いた基板の処理方法 |
WO2010071005A1 (ja) * | 2008-12-15 | 2010-06-24 | アクアサイエンス株式会社 | 対象物洗浄方法及び対象物洗浄システム |
JP2013187281A (ja) * | 2012-03-07 | 2013-09-19 | Disco Abrasive Syst Ltd | 被加工物の加工方法 |
JP2015062956A (ja) * | 2012-09-19 | 2015-04-09 | 株式会社荏原製作所 | 研磨装置 |
JP2017159201A (ja) * | 2016-03-07 | 2017-09-14 | セイコーインスツル株式会社 | ワーク洗浄装置、及びワーク洗浄方法 |
Also Published As
Publication number | Publication date |
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TW200608453A (en) | 2006-03-01 |
KR20070052321A (ko) | 2007-05-21 |
JPWO2006018948A1 (ja) | 2008-05-08 |
US20080035754A1 (en) | 2008-02-14 |
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