WO2020054682A1 - ウエハ載置装置 - Google Patents
ウエハ載置装置 Download PDFInfo
- Publication number
- WO2020054682A1 WO2020054682A1 PCT/JP2019/035436 JP2019035436W WO2020054682A1 WO 2020054682 A1 WO2020054682 A1 WO 2020054682A1 JP 2019035436 W JP2019035436 W JP 2019035436W WO 2020054682 A1 WO2020054682 A1 WO 2020054682A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wafer
- focus ring
- cooling plate
- plate
- ring
- Prior art date
Links
- 238000001816 cooling Methods 0.000 claims abstract description 123
- 238000003825 pressing Methods 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims description 72
- 230000002093 peripheral effect Effects 0.000 claims description 29
- 125000006850 spacer group Chemical group 0.000 claims description 15
- 235000012431 wafers Nutrition 0.000 description 171
- 239000003507 refrigerant Substances 0.000 description 24
- 238000010438 heat treatment Methods 0.000 description 16
- 239000000919 ceramic Substances 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 239000002826 coolant Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011156 metal matrix composite Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32623—Mechanical discharge control means
- H01J37/32642—Focus rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/458—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for supporting substrates in the reaction chamber
- C23C16/4582—Rigid and flat substrates, e.g. plates or discs
- C23C16/4583—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally
- C23C16/4585—Devices at or outside the perimeter of the substrate support, e.g. clamping rings, shrouds
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/458—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for supporting substrates in the reaction chamber
- C23C16/4582—Rigid and flat substrates, e.g. plates or discs
- C23C16/4583—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally
- C23C16/4586—Elements in the interior of the support, e.g. electrodes, heating or cooling devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32715—Workpiece holder
- H01J37/32724—Temperature
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- 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
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/3065—Plasma etching; Reactive-ion etching
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67103—Apparatus for thermal treatment mainly by conduction
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67109—Apparatus for thermal treatment mainly by convection
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6831—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using electrostatic chucks
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6831—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using electrostatic chucks
- H01L21/6833—Details of electrostatic chucks
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68721—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by edge clamping, e.g. clamping ring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68735—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by edge profile or support profile
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68785—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by the mechanical construction of the susceptor, stage or support
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N13/00—Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/002—Cooling arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/20—Positioning, supporting, modifying or maintaining the physical state of objects being observed or treated
- H01J2237/2007—Holding mechanisms
Definitions
- the present invention relates to a wafer mounting device.
- Patent Literature 1 discloses a metal base in which a disc-shaped center metal base and an annular outer metal base are connected to each other, and a disc-shaped center electrostatic chuck provided on an upper surface of the center metal base.
- a wafer mounting apparatus including a heater and an annular outer peripheral electrostatic chuck heater provided on an upper surface of an outer peripheral metal base.
- a disk-shaped wafer is electrostatically attracted to the upper surface of the center electrostatic chuck heater, and an annular focus ring is electrostatically attracted to the upper surface of the outer electrostatic chuck heater. Further, the temperature of the wafer and the temperature of the focus ring are individually controlled.
- a wafer mounting device 510 as shown in FIG. 6 is also known.
- the wafer mounting device 510 includes a wafer mounting table 512 and a focus ring mounting table 520, and is fixed to the installation plate 82 in the chamber 80.
- the wafer mounting table 512 includes a wafer electrostatic chuck 514 and a wafer cooling plate 516 bonded to a surface of the wafer electrostatic chuck 514 opposite to a surface 514a on which the wafer W is mounted. .
- the wafer W is electrostatically attracted to the surface 514a when a DC voltage is applied to an electrostatic electrode built in the wafer electrostatic chuck 514.
- the focus ring mounting table 520 is a separate member from the wafer mounting table 512, and is a ring-shaped member arranged on the outer periphery of the wafer mounting table 512.
- the focus ring mounting table 520 includes a focus ring electrostatic chuck 522 and a focus ring cooling plate 524 bonded to a surface of the focus ring electrostatic chuck 522 opposite to the surface 522a on which the focus ring FR is mounted.
- the focus ring FR is a member that is thicker than the wafer W, and is electrostatically attracted to the front surface 522a when a DC voltage is applied to an electrostatic electrode built in the focus ring electrostatic chuck 522.
- the wafer cooling plate 516 includes a wafer cooling plate flange portion 516a that protrudes radially outward from an end near the installation plate 82 on which the wafer mounting device 510 is installed.
- a plurality of through holes 516b are provided along the circumferential direction in the wafer cooling plate flange 516a.
- the wafer mounting table 512 fastens the bolt 84 to the screw hole of the convex portion 524a from the rear surface of the installation plate 82 with the convex portion 524a provided on the rear surface of the focus ring cooling plate 524 fitted in the through hole 516b. Thereby, it is fixed to the installation plate 82 via the focus ring mounting table 520.
- the present invention has been made to solve such a problem, and has as its main object to prevent the focus ring mounting surface from waving in the circumferential direction.
- the wafer mounting device includes: A wafer mounting table including a wafer electrostatic chuck and a wafer cooling plate attached to a surface opposite to the wafer mounting surface of the wafer electrostatic chuck;
- the wafer mounting table is separate from the wafer mounting table, is disposed on the outer periphery of the wafer mounting table, and is attached to a surface opposite to a focus ring mounting surface of the focus ring electrostatic chuck and the focus ring electrostatic chuck.
- a focus ring mounting table having a focus ring cooling plate, A clamp member that is separate from the focus ring mounting table and is disposed on an outer periphery of the focus ring mounting table;
- a wafer mounting device comprising:
- the wafer cooling plate includes a wafer cooling plate flange protruding radially outward from an outer peripheral surface of an end near a mounting plate on which the wafer mounting device is installed,
- the focus ring cooling plate includes a pressing portion that presses the wafer cooling plate flange portion toward the installation plate, and a focus ring cooling protruding radially outward from an outer peripheral surface of an end near the installation plate.
- the clamp member is fastened to the installation plate by a fastener in a state where the focus ring cooling plate flange is pressed toward the installation plate, thereby installing the wafer mounting table and the focus ring mounting table. Fixing to the installation plate without directly fastening to the plate, Things.
- the clamp member mounts the wafer mounting table and the focus ring mounting table by being fastened to the installation plate by a fastener while pressing the focus ring cooling plate flange portion toward the installation plate. Fix to the installation board without directly fastening to the board. Therefore, the height of the clamp member may be different between the vicinity of the fastener and the other portion, and the clamp member may undulate in the circumferential direction.
- the focus ring mounting table is not directly fastened by the fastener but is fixed to the installation plate using the pressing force of the clamp member, the focus ring mounting surface is substantially flat. As described above, according to the wafer mounting device of the present invention, it is possible to prevent the focus ring mounting surface from waving in the circumferential direction. As a result, the thick focus ring can be firmly attracted to the focus ring mounting surface by the focus ring electrostatic chuck.
- the clamp member may be a single ring member, or a plurality of arc-shaped members may be arranged in a ring shape.
- the former is more preferable because the pressing force applied to the focus ring cooling plate is more easily dispersed than the latter.
- a thermal resistance spacer may be interposed between the wafer cooling plate flange portion of the wafer cooling plate and the pressing portion of the focus ring. This can suppress the influence of the focus ring cooling plate on the wafer temperature control and the influence of the wafer cooling plate on the focus ring temperature control. As a result, the wafer temperature control and the focus ring temperature control can be performed independently.
- the focus ring mounting surface may be one of the focus ring mounting surfaces generated when the focus ring cooling plate flange portion is pressed toward the installation plate by the clamp member.
- An inclined surface for canceling the height gradient between the peripheral portion and the outer peripheral portion may be used. This makes it possible to further flatten the focus ring mounting surface when the wafer mounting device is fixed to the installation plate.
- a thermal resistance spacer is sandwiched between the wafer cooling plate flange portion and the focus ring cooling plate flange portion, and the thermal resistance spacer is provided by the clamp member.
- the focus ring cooling plate flange may have an inclined thickness that cancels a height gradient between an inner peripheral portion and an outer peripheral portion of the focus ring mounting surface that is generated when the flange portion is pressed toward the installation plate. .
- the temperature control of the wafer and the temperature control of the focus ring can be independently performed by the thermal resistance spacer, and the focus ring mounting surface in a state where the wafer mounting device is fixed to the mounting plate. Can be made more flat.
- a seal ring disposed between the focus ring cooling plate and the installation plate and on an inner peripheral side of the focus ring cooling plate includes the wafer cooling plate and the seal ring. It may be shared with a seal ring arranged between the installation plate and the outer peripheral side of the wafer cooling plate.
- the atmosphere between the wafer cooling plate and the installation plate and the atmosphere between the focus ring cooling plate and the installation plate may be independent from each other.
- a seal ring is arranged between the wafer cooling plate and the installation plate and on the outer peripheral side of the wafer cooling plate, and between the focus ring cooling plate and the installation plate and the focus ring cooling plate.
- FIG. 4 is a longitudinal sectional view of the wafer mounting device 10 fixed to an installation plate 82.
- FIG. 2 is a plan view of the wafer mounting device 10.
- FIG. 4 is an explanatory view of use when processing a wafer W using the wafer mounting device 10.
- FIG. 3 is a longitudinal sectional view of the wafer mounting device 110.
- FIG. 2 is a plan view of the wafer mounting device 210.
- FIG. 9 is an explanatory view of use when processing a wafer W using the wafer mounting device 510.
- FIG. 11 is a plan view of the wafer mounting device 510.
- FIG. 1 is a longitudinal sectional view of the wafer mounting device 10 fixed to the mounting plate 82
- FIG. 2 is a plan view of the wafer mounting device 10.
- the wafer mounting device 10 is used for performing CVD, etching, and the like on the wafer W using plasma, and is mounted on an installation plate 82 provided inside a semiconductor processing chamber 80 (see FIG. 3). Fixed.
- the wafer mounting device 10 includes a wafer mounting table 12, a focus ring mounting table 20, and a clamp member 30.
- the wafer mounting table 12 includes a wafer electrostatic chuck 14 and a wafer cooling plate 16.
- the wafer cooling plate 16 is bonded via a bonding sheet 15 to a back surface 14b of the electrostatic chuck 14 for a wafer opposite to the front surface 14a which is the wafer mounting surface.
- the electrostatic chuck 14 for wafers is one in which an electrostatic electrode 14d and a resistance heating element 14e are embedded in a ceramic base 14c.
- the ceramic base 14c is a disk-shaped plate made of a ceramic material represented by aluminum nitride, silicon carbide, silicon nitride, aluminum oxide, and the like. On the surface 14a of the ceramic base 14c, a plurality of irregularities (not shown) are formed by embossing.
- a gas for heat conduction (for example, He gas) is supplied from a gas supply path (not shown) between the concave portion provided on the surface 14a and the wafer W (see FIG. 3) mounted on the surface 14a. Has become.
- the gas supply path is provided so as to penetrate the installation plate 82, the wafer cooling plate 16, the bonding sheet 15, and the wafer electrostatic chuck 14.
- the electrostatic electrode 14d is made of a conductive mesh or plate, and is provided in parallel with the surface 14a (including the case where the electrode is substantially parallel, the same applies hereinafter).
- the back surface of the electrostatic electrode 14d is connected to a power supply rod (not shown) that penetrates through the installation plate 82, the wafer cooling plate 16, and the bonding sheet 15 and is inserted into the ceramic base 14c.
- a DC voltage is applied to the electrostatic electrode 14d via the power supply rod.
- the resistance heating element 14e is made of a conductive coil or a printed pattern, and is wired from one end to the other end in a one-stroke manner over the entire surface 14a.
- One end and the other end of the resistance heating element 14e are connected to a pair of power supply rods (not shown) that penetrate the installation plate 82, the wafer cooling plate 16, and the bonding sheet 15 and are inserted into the ceramic base 14c.
- a voltage is applied to the resistance heating element 14e via the power supply rod.
- the wafer cooling plate 16 is a disk-shaped plate made of a metal typified by aluminum, an aluminum alloy, or the like, and has a refrigerant passage (not shown) through which a refrigerant can circulate.
- This refrigerant passage is connected to a refrigerant supply passage and a refrigerant discharge passage that penetrate the installation plate 82, and the refrigerant discharged from the refrigerant discharge passage is returned to the refrigerant supply passage again after its temperature is adjusted.
- the wafer cooling plate 16 includes a wafer cooling plate flange portion 16a that protrudes radially outward from an outer peripheral surface of a lower end portion (an end portion closer to the installation plate 82) of the wafer cooling plate 16.
- the focus ring mounting table 20 is separate from the wafer mounting table 12 and is arranged on the outer periphery of the wafer mounting table 12.
- the focus ring mounting table 20 includes a focus ring electrostatic chuck 22 and a focus ring cooling plate 24.
- the focus ring cooling plate 24 is bonded via a bonding sheet 25 to a back surface 22b of the focus ring electrostatic chuck 22 opposite to the front surface 22a which is the focus ring mounting surface.
- the focus ring electrostatic chuck 22 has a structure in which an electrostatic electrode 22d and a resistance heating element 22e are embedded in a ceramic base 22c.
- the ceramic base 22c is a ring-shaped plate made of the same material as the ceramic base 14c.
- a plurality of irregularities are formed on the surface 22a of the ceramic base 22c by embossing.
- a gas for heat conduction (for example, He gas) is supplied from a gas supply path (not shown) between the concave portion provided on the surface 22a and the focus ring FR (see FIG. 3) mounted on the surface 22a. It has become.
- the gas supply path is provided so as to penetrate the installation plate 82, the focus ring cooling plate 24, the bonding sheet 25, and the focus ring electrostatic chuck 22.
- the electrostatic electrode 22d is made of a conductive mesh or plate, and is provided in parallel with the surface 22a.
- the back surface of the electrostatic electrode 22d is connected to a power supply rod (not shown) that penetrates through the mounting plate 82, the focus ring cooling plate 24, and the bonding sheet 25 and is inserted into the ceramic base 22c.
- a DC voltage is applied to the electrostatic electrode 22d through the power supply rod.
- the resistance heating element 22e is made of a conductive coil or printed pattern, and is wired from one end to the other end in a one-stroke manner over the entire surface 22a.
- One end and the other end of the resistance heating element 22e are connected to a pair of power supply rods (not shown) which penetrate the installation plate 82, the focus ring cooling plate 24, and the bonding sheet 25 and are inserted into the ceramic base 22c.
- a voltage is applied to the resistance heating element 22e via the power supply rod.
- the focus ring cooling plate 24 is a ring-shaped plate made of a metal typified by aluminum, an aluminum alloy, or the like, and has a refrigerant passage (not shown) through which a refrigerant can circulate. This refrigerant passage is connected to a refrigerant supply passage and a refrigerant discharge passage that penetrate the installation plate 82, and the refrigerant discharged from the refrigerant discharge passage is returned to the refrigerant supply passage again after its temperature is adjusted.
- the focus ring cooling plate 24 includes a focus ring cooling plate flange portion 24a that protrudes radially outward from an outer peripheral surface of a lower end portion (an end portion closer to the installation plate 82) of the focus ring cooling plate 24. .
- the focus ring cooling plate 24 includes a ring-shaped pressing portion 24 b protruding radially inward from an outer peripheral surface of an upper end portion (an end portion farther from the installation plate 82) of the focus ring cooling plate 24.
- the pressing portion 24 b is a member that can press the wafer cooling plate flange 16 a toward the installation plate 82 via the thermal resistance spacer 40.
- the heat resistance spacer 40 is a ring member made of a material having high heat resistance such as zirconia or resin.
- the clamp member 30 is a separate member from the focus ring mounting table 20 and is a ring-shaped member arranged on the outer periphery of the focus ring mounting table 20.
- the clamp member 30 is made of Al, Ti, SUS, SiSiCTi (a metal matrix composite of Si, SiC and Ti), or other non-magnetic metal or alloy.
- the clamp member 30 includes a ring-shaped collar portion 32 that protrudes radially inward from an inner peripheral surface of an upper end portion (an end portion far from the installation plate 82) of the clamp member 30.
- the flange portion 32 is a member that can press the focus ring cooling plate flange portion 24a toward the installation plate 82. As shown in FIG.
- the clamp member 30 has a plurality of (12 in this case) through holes 34 at equal intervals along the circumferential direction.
- the clamp member 30 serves to fix the wafer mounting table 12 and the focus ring mounting table 20 to the upper surface of the installation plate 82 without directly fastening the mounting plate 82.
- An example of the fixing procedure will be described below.
- the wafer mounting table 12 is arranged at a predetermined position on the mounting plate 82, and the ring-shaped thermal resistance spacer 40 is mounted on the surface of the wafer cooling plate flange 16a of the wafer mounting table 12.
- the focus ring mounting table 20 is set on the setting plate 82 such that the pressing portion 24b of the focus ring mounting table 20 covers the upper surface of the thermal resistance spacer 40.
- the clamp member 30 is installed on the installation plate 82 such that the flange 32 of the clamp member 30 covers the upper surface of the focus ring cooling plate flange 24a of the focus ring mounting table 20.
- the bolts 86 are inserted into the through holes 34 of the clamp member 30, and the bolts 86 are screwed into the screw holes of the installation plate 82 and fastened.
- the clamp member 30 is fastened to the installation plate 82 by the bolt 86 in a state where the flange 32 presses the focus ring cooling plate flange 24 a toward the installation plate 82.
- the wafer mounting table 12 and the focus ring mounting table 20 are fixed to the installation plate 82 without directly fastening to the installation plate 82.
- O An O-ring is appropriately disposed between the back surface of the wafer cooling plate 16 and the front surface of the installation plate 82.
- the outer periphery of the back surface of the wafer cooling plate 16 is set so that the atmosphere between the back surface of the wafer cooling plate 16 and the surface of the installation plate 82 is independent of the surrounding atmosphere.
- the O-ring 18 is arranged along the.
- O is inserted around insertion passages through which power supply rods for applying voltage to the electrostatic electrodes 14d and the resistance heating elements 14e are inserted.
- a ring may be provided, or an O-ring may be provided around a coolant supply path for supplying the coolant to a coolant path (not shown) of the wafer cooling plate 16 or a coolant discharge path for discharging the coolant from the coolant path.
- O-rings are appropriately disposed between the back surface of the focus ring cooling plate 24 and the front surface of the installation plate 82.
- the back surface of the focus ring cooling plate 24 is set so that the atmosphere between the back surface of the focus ring cooling plate 24 and the surface of the installation plate 82 is independent of the surrounding atmosphere.
- O-rings 26 and 28 are arranged along the inner and outer peripheries, respectively.
- the back surface of the focus ring cooling plate 24 and the surface of the installation plate 82 around the insertion passage through which each power supply rod for applying a voltage to the electrostatic electrode 22d and the resistance heating element 22e is inserted.
- An O-ring may be disposed, or an O-ring may be disposed around a refrigerant supply path for supplying refrigerant to a refrigerant path (not shown) of the focus ring cooling plate 24 or a refrigerant discharge path for discharging refrigerant from the refrigerant path. Good.
- the chamber 80 includes an installation plate 82 for installing the wafer mounting device 10 therein.
- the wafer mounting device 10 is installed on the installation plate 82 as described above.
- a shower head 90 that discharges a process gas from a number of gas injection holes to the inside of the chamber 80 is arranged.
- a disc-shaped wafer W is mounted on the wafer mounting surface 14a of the wafer mounting apparatus 10.
- the wafer W is electrostatically attracted to the wafer mounting surface 14a by applying a voltage to the electrostatic electrode 14d of the wafer electrostatic chuck 14.
- the temperature of the wafer W can be controlled by adjusting the power supplied to the resistance heating element 14 e of the wafer electrostatic chuck 14 and the temperature of the refrigerant supplied to a coolant passage (not shown) of the wafer cooling plate 16. At this time, He gas is supplied between the wafer W and a concave portion (not shown) of the wafer mounting surface 14a in order to improve heat conduction.
- the temperature control of the wafer W is executed by detecting the temperature of the wafer W by a temperature detection sensor (not shown) and feeding back the temperature so as to reach the target temperature.
- the focus ring FR is mounted on the focus ring mounting surface 22a of the wafer mounting device 10.
- the focus ring FR has a step along the inner periphery of the upper end so as not to interfere with the wafer W.
- the focus ring FR is electrostatically attracted to the focus ring mounting surface 22a by applying a voltage to the electrostatic electrode 22d of the focus ring electrostatic chuck 22.
- the temperature of the focus ring FR can be controlled by adjusting the power supplied to the resistance heating element 22e of the focus ring electrostatic chuck 22 and the temperature of the refrigerant supplied to a coolant passage (not shown) of the focus ring cooling plate 24. it can.
- He gas is supplied between the focus ring FR and a concave portion (not shown) of the focus ring mounting surface 22a in order to improve heat conduction.
- the temperature control of the focus ring FR is performed by detecting the temperature of the focus ring FR by a temperature detection sensor (not shown) and feeding back the temperature so as to reach the target temperature.
- the inside of the chamber 80 is set to a predetermined vacuum atmosphere (or reduced pressure atmosphere), and the wafer cooling plate 16 and the shower head 90 of the wafer mounting table 12 are supplied while the process gas is supplied from the shower head 90. During this period, high-frequency power is supplied to generate plasma. Then, a CVD film is formed or etched on the wafer by using the plasma.
- the space below the installation plate 82 is an air atmosphere.
- the focus ring FR is also consumed as the wafer W is subjected to the plasma processing, the focus ring FR is thick, and therefore the focus ring FR is replaced after processing a plurality of wafers W.
- the clamp member 30 is fastened to the mounting plate 82 by the bolt 86 in a state where the focus ring cooling plate flange 24a is pressed toward the mounting plate 82. 12 and the focus ring mounting table 20 are fixed to the installation plate 82 without directly fastening to the installation plate 82. Therefore, the height of the clamp member 30 may be different between the vicinity of the bolt 86 and the other portions, and the clamp member 30 may be wavy in the circumferential direction.
- the focus ring mounting table 20 is not directly fastened with bolts but is fixed to the installation plate 82 using the pressing force of the clamp member 30, the focus ring mounting surface 22a is substantially flat.
- the wafer mounting device 10 of the present embodiment it is possible to prevent the focus ring mounting surface 22a from waving in the circumferential direction.
- the thick focus ring FR can be firmly attracted to the focus ring mounting surface 22a by the focus ring electrostatic chuck 22. This facilitates temperature adjustment of the focus ring FR, and also prevents He gas supplied to the back surface of the focus ring FR from leaking.
- the clamp member 30 is a single ring member, the pressing force applied to the focus ring cooling plate 24 is easily dispersed. Therefore, it is easier to prevent the focus ring mounting surface 22a from waving in the circumferential direction.
- a thermal resistance spacer 40 is sandwiched between the wafer cooling plate flange 16 a of the wafer cooling plate 16 and the pressing portion 24 b of the focus ring cooling plate 24. Therefore, the influence of the focus ring cooling plate 24 on the temperature control of the wafer W and the influence of the wafer cooling plate 16 on the temperature control of the focus ring FR can be suppressed. As a result, the temperature control of the wafer W and the temperature control of the focus ring FR can be independently performed.
- a second corner portion 16e of the wafer cooling plate 16 which is a boundary between the surface 16c facing the installation plate 82 and the surface 16d facing the focus ring cooling plate 24 is chamfered.
- the common O-ring 42 is disposed so as to be in contact with the first corner 24 e, the second corner 16 e, and the three surfaces of the installation plate 82. By doing so, the space and cost of the O-rings can be reduced as compared with the case where two O-rings 18 and 26 are separately provided as shown in FIG. Pressing force (pressing force by the clamp member 30) can also be reduced.
- the clamp member 30 is a single ring-shaped member.
- the present invention is not limited to this.
- a plurality of arc-shaped members may be arranged in a ring shape.
- a clamp member 130 in which four arc-shaped members 132 are arranged in a ring shape may be employed.
- the same components as those in the above-described embodiment are denoted by the same reference numerals. Even in this case, the same effect as in the above-described embodiment can be obtained.
- the clamp member 30 is preferable.
- the focus ring mounting surface 22a is substantially flat. In some cases, however, the outer peripheral portion of the focus ring mounting surface 22a (the shaded portion of the focus ring mounting surface 22a in FIG. 2). May be slightly lower than the inner peripheral portion (the portion of the focus ring mounting surface 22a in FIG. 2 that is not shaded). This is because the clamp member 30 presses the flange portion 24 a provided on the outer peripheral side of the focus ring cooling plate 24 toward the installation plate 82. Therefore, the focus ring mounting surface 22a may be formed in advance as an inclined surface that cancels such a height gradient. In this way, the focus ring mounting surface 22a in a state where the wafer mounting device 10 is fixed to the mounting plate 82 can be made flatter.
- the thickness of the thermal resistance spacer 40 may be set to an inclined thickness that cancels such a height gradient.
- the temperature control of the wafer W and the temperature control of the focus ring FR can be independently performed by the thermal resistance spacer 40, and the effect that the wafer mounting device 10 is fixed to the installation plate 82 can be obtained.
- the effect that the focus ring mounting surface 22a can be made flatter is obtained.
- the wafer electrostatic chuck 14 in which the electrostatic electrode 14d and the resistance heating element 14e are embedded is used, but the resistance heating element 14e may be omitted.
- the bolt 86 is inserted from the upper surface of the clamp member 30 and screwed to the installation plate 82.
- a bolt may be inserted from the back surface of the installation plate 82 and screwed to the clamp member 30.
- a thermal resistance spacer may be arranged between the outer peripheral surface of the wafer cooling plate flange 16a and the inner peripheral surface of the focus ring cooling plate 24. In this way, the influence of the focus ring cooling plate 24 on the temperature control of the wafer W and the influence of the wafer cooling plate 16 on the temperature control of the focus ring FR can be further suppressed.
- the wafer cooling plate 16 is bonded to the back surface 14b of the wafer electrostatic chuck 14 with the bonding sheet 15.
- the wafer cooling plate 16 is made of a ceramic composite material such as Si—SiC—Ti.
- the wafer cooling plate 16 may be bonded to the back surface 14b of the wafer electrostatic chuck 14 by TCB (Thermal compression bonding).
- TCB refers to a known method in which a metal bonding material is sandwiched between two members to be bonded, and the two members are pressure-bonded while being heated to a temperature equal to or lower than the solidus temperature of the metal bonding material. This is the same for the focus ring cooling plate 24.
- lift pins for moving the wafer W up and down may be provided.
- the insertion holes for inserting the lift pins may be provided so as to penetrate the mounting plate 82, the wafer cooling plate 16, the bonding sheet 15, and the wafer electrostatic chuck 14.
- the present invention is applicable to a wafer mounting device used for performing, for example, CVD or etching on a wafer.
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Abstract
Description
ウエハ用静電チャックと該ウエハ用静電チャックのウエハ載置面とは反対側の面に取り付けられたウエハ用冷却板とを備えたウエハ載置台と、
前記ウエハ載置台とは別体であり、前記ウエハ載置台の外周に配置され、フォーカスリング用静電チャックと該フォーカスリング用静電チャックのフォーカスリング載置面とは反対側の面に取り付けられたフォーカスリング用冷却板とを備えたフォーカスリング載置台と、
前記フォーカスリング載置台とは別体であり、前記フォーカスリング載置台の外周に配置されたクランプ部材と、
を備えたウエハ載置装置であって、
前記ウエハ用冷却板は、前記ウエハ載置装置が設置される設置板に近い側の端部の外周面から半径外向きに突き出したウエハ用冷却板フランジ部を備え、
前記フォーカスリング用冷却板は、前記ウエハ用冷却板フランジ部を設置板に向かって押圧する押圧部と、前記設置板に近い側の端部の外周面から半径外向きに突き出したフォーカスリング用冷却板フランジ部とを備え、
前記クランプ部材は、前記フォーカスリング用冷却板フランジ部を前記設置板に向かって押圧した状態で締結具によって前記設置板に締結されることにより、前記ウエハ載置台及び前記フォーカスリング載置台を前記設置板に直接締結することなく前記設置板に固定する、
ものである。
Claims (7)
- ウエハ用静電チャックと該ウエハ用静電チャックのウエハ載置面とは反対側の面に取り付けられたウエハ用冷却板とを備えたウエハ載置台と、
前記ウエハ載置台とは別体であり、前記ウエハ載置台の外周に配置され、フォーカスリング用静電チャックと該フォーカスリング用静電チャックのフォーカスリング載置面とは反対側の面に取り付けられたフォーカスリング用冷却板とを備えたフォーカスリング載置台と、
前記フォーカスリング載置台とは別体であり、前記フォーカスリング載置台の外周に配置されたクランプ部材と、
を備えたウエハ載置装置であって、
前記ウエハ用冷却板は、前記ウエハ載置装置が設置される設置板に近い側の端部の外周面から半径外向きに突き出したウエハ用冷却板フランジ部を備え、
前記フォーカスリング用冷却板は、前記ウエハ用冷却板フランジ部を設置板に向かって押圧する押圧部と、前記設置板に近い側の端部の外周面から半径外向きに突き出したフォーカスリング用冷却板フランジ部とを備え、
前記クランプ部材は、前記フォーカスリング用冷却板フランジ部を前記設置板に向かって押圧した状態で締結具によって前記設置板に締結されることにより、前記ウエハ載置台及び前記フォーカスリング載置台を前記設置板に直接締結することなく前記設置板に固定する、
ウエハ載置装置。 - 前記クランプ部材は、一つのリング部材である、
請求項1に記載のウエハ載置装置。 - 前記クランプ部材は、複数の円弧状部材がリング形状に並んで構成されている、
請求項1に記載のウエハ載置装置。 - 前記ウエハ用冷却板の前記ウエハ用冷却板フランジ部と前記フォーカスリングの前記押圧部との間には熱抵抗スペーサが挟まれている、
請求項1~3のいずれか1項に記載のウエハ載置装置。 - 前記フォーカスリング載置面は、前記クランプ部材によって前記フォーカスリング用冷却板フランジ部が前記設置板に向かって押圧されたときに生じる前記フォーカスリング載置面の内周部と外周部との高さ勾配をキャンセルする傾斜面となっている、
請求項1~4のいずれか1項に記載のウエハ載置装置。 - 前記ウエハ用冷却板フランジ部と前記フォーカスリング用冷却板フランジ部との間には熱抵抗スペーサが挟まれており、
前記熱抵抗スペースは、前記クランプ部材によって前記フォーカスリング用冷却板フランジ部が前記設置板に向かって押圧されたときに生じる前記フォーカスリング載置面の内周部と外周部との高さ勾配をキャンセルする傾斜厚みを有している、
請求項1~3のいずれか1項に記載のウエハ載置装置。 - 前記フォーカスリング用冷却板と前記設置板との間であって前記フォーカスリング用冷却板の内周側に配置されるシールリングは、前記ウエハ用冷却板と前記設置板との間であって前記ウエハ用冷却板の外周側に配置されるシールリングと共通化されている、
請求項1~6のいずれか1項に記載のウエハ載置装置。
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JP7457765B2 (ja) | 2021-10-28 | 2024-03-28 | セメス株式会社 | 基板テスト装置およびそれを用いるデチャック力の測定方法 |
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US20200388471A1 (en) | 2020-12-10 |
CN111801787B (zh) | 2023-10-03 |
US11810767B2 (en) | 2023-11-07 |
JPWO2020054682A1 (ja) | 2020-12-17 |
CN111801787A (zh) | 2020-10-20 |
TW202025370A (zh) | 2020-07-01 |
KR102423380B1 (ko) | 2022-07-22 |
TWI761703B (zh) | 2022-04-21 |
JP6681522B1 (ja) | 2020-04-15 |
KR20200110796A (ko) | 2020-09-25 |
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