WO2018159687A1 - ウエハ加熱装置 - Google Patents
ウエハ加熱装置 Download PDFInfo
- Publication number
- WO2018159687A1 WO2018159687A1 PCT/JP2018/007532 JP2018007532W WO2018159687A1 WO 2018159687 A1 WO2018159687 A1 WO 2018159687A1 JP 2018007532 W JP2018007532 W JP 2018007532W WO 2018159687 A1 WO2018159687 A1 WO 2018159687A1
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- WIPO (PCT)
- Prior art keywords
- terminals
- pair
- wafer
- resistance heating
- heating element
- Prior art date
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 119
- 239000000758 substrate Substances 0.000 claims description 31
- 238000001816 cooling Methods 0.000 claims description 22
- 239000003507 refrigerant Substances 0.000 claims description 12
- 239000002826 coolant Substances 0.000 claims description 6
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 abstract description 66
- 230000002093 peripheral effect Effects 0.000 description 26
- 239000011810 insulating material Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000106 Liquid crystal polymer Polymers 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 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
- 238000005476 soldering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67103—Apparatus for thermal treatment mainly by conduction
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67109—Apparatus for thermal treatment mainly by convection
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
- H05B3/143—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds applied to semiconductors, e.g. wafers heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
- H05B3/283—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material the insulating material being an inorganic material, e.g. ceramic
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
- H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
Definitions
- the present invention relates to a wafer heating apparatus.
- a wafer heating apparatus for heating a wafer is employed.
- a wafer heating apparatus one in which a resistance heating element is embedded in a substrate whose surface is a wafer mounting surface is known.
- the resistance heating element is wired from one of the pair of terminals to the other in the manner of a single stroke.
- Patent Document 1 discloses that a ceramic base is divided into a central zone and an outer peripheral zone, and a resistance heating element is provided in each of the central zone and the outer peripheral zone.
- the present invention has been made to solve the above-described problems, and has as its main object to increase the thermal uniformity of the wafer as compared with the conventional technique.
- the first wafer heating apparatus of the present invention comprises: A wafer heating apparatus in which a resistance heating element is embedded in a substrate whose one side is a wafer mounting surface, The resistance heating element is wired in a one-stroke manner from one of the pair of terminals to the other, The pair of terminals are formed so that the entire shape of the pair of terminals is circular when viewed in plan. Is.
- the pair of terminals of the resistance heating element is formed so that the entire shape of the pair of terminals is circular when viewed in plan. For this reason, it is sufficient to design the resistance heating element so as to bypass one circle, and the area for irregularly laying out the resistance heating element is reduced. In addition, the resistance heating element does not exist between the pair of terminals. However, since the area can be narrowed, the influence of the area without the resistance heating element on the thermal uniformity of the wafer is reduced. Therefore, the thermal uniformity of the wafer can be improved as compared with the conventional case.
- the material of the “base” includes ceramics and resins.
- one of the pair of terminals when the pair of terminals are viewed in plan, one of the pair of terminals appears as one semicircle portion obtained by dividing a predetermined circle in half, and the pair of terminals The other of these may appear as the other semicircular portion obtained by dividing the predetermined circle in half.
- one of the pair of terminals when the pair of terminals are viewed in plan, one of the pair of terminals appears as the circular portion of a predetermined circle divided into a central circular portion and an annular portion outside the circular portion.
- the other of the pair of terminals may appear as a C-shaped portion along the annular portion. In this way, the entire shape of the pair of terminals can be easily made circular when viewed in plan.
- a pair of lands having a shape corresponding to each of the pair of terminals may be provided on a surface of the base opposite to the wafer mounting surface.
- a cooling plate containing a coolant passage is joined to the surface of the substrate opposite to the wafer mounting surface, and the cooling plate faces the pair of lands at a position that does not interfere with the coolant passage.
- One through hole may be provided. The through holes can cause temperature singularities in the wafer, but here, since one through hole should be provided in the cooling plate for the pair of terminals of the resistance heating element, each of the pair of terminals Compared with the case where the through hole is provided, the temperature uniformity of the wafer is easily improved by the fact that there are few temperature singularities.
- the substrate may be divided into a plurality of zones, and the resistance heating element may be provided for each of the zones. In this way, temperature adjustment can be performed for each zone.
- the second wafer heating apparatus of the present invention is A wafer heating apparatus in which at least two resistance heating elements are embedded in a substrate whose one surface is a wafer mounting surface, Each resistance heating element is wired in a one-stroke manner from one of the pair of terminals to the other, A total of four terminals of the two resistance heating elements are collectively provided at the same position, and are formed so that the entire shape of the four terminals is circular when viewed in plan. Is.
- this wafer heating apparatus a total of four terminals of the two resistance heating elements are provided at the same position, and the entire shape of the four terminals is circular when viewed in plan. For this reason, it is sufficient to design the resistance heating element so as to bypass one circle, and the area for irregularly laying out the resistance heating element is reduced. Further, although the resistance heating element does not exist between the four terminals, the area can be narrowed, so that the influence of the area without the resistance heating element on the heat uniformity of the wafer is reduced. Therefore, the thermal uniformity of the wafer can be improved as compared with the conventional case.
- each terminal when the four terminals are viewed in plan, each terminal may appear as a fan-shaped portion obtained by dividing a predetermined circle into four by two diameters orthogonal to each other. Good. In this way, the overall shape of the four terminals can be easily made circular when viewed in plan.
- each of the four terminals may be provided on the surface of the base opposite to the wafer mounting surface.
- a cooling plate containing a coolant passage is joined to the surface of the base opposite to the wafer mounting surface, and the cooling plate faces the four lands at a position not interfering with the coolant passage.
- One through hole may be provided. The through hole can cause a temperature singularity in the wafer, but here, since one through hole should be provided in the cooling plate for the four terminals of the resistance heating element, each of the four terminals is provided. Compared with the case where the through hole is provided, the temperature uniformity of the wafer is easily improved by the fact that there are few temperature singularities.
- FIG. 1 The perspective view of the ceramic heater 10.
- FIG. 2 is a partial cross-sectional view along AA in FIG. 1.
- the perspective view of the connection member 40 The bottom view of the vicinity of the through-hole 63 of the ceramic heater 10.
- FIG. The top view of the ceramic heater 110 (with a horizontal sectional view near the pair of terminals 121 and 122). 2 is a partial cross-sectional view of the ceramic heater 110.
- FIG. The perspective view of the connection member 140 The bottom view of the vicinity of the through-hole 163 of the ceramic heater 110.
- the top view of the ceramic heater 210 (with horizontal sectional view of the vicinity of the terminals 221, 222, 251, 252).
- FIG. 1 The fragmentary sectional view of the ceramic heater 210.
- FIG. 1 The perspective view of the connection member 240 The bottom view of the vicinity of the through-hole 263 of the ceramic heater 210.
- FIG. 1 is a perspective view of the ceramic heater 10 of the present embodiment
- FIG. 2 is a plan view of the ceramic heater 10 (with a horizontal sectional view in the vicinity of the pair of terminals 21 and 22)
- FIG. 4 is a perspective view of the connection member 40
- FIG. 5 is a bottom view of the vicinity of the through hole 63 of the ceramic heater 10.
- the ceramic heater 10 includes a ceramic base 12, a central zone resistance heating element 20 (see FIG. 2), an outer peripheral zone resistance heating element 50 (see FIG. 2), and a cooling plate 60.
- the ceramic substrate 12 is a disk-shaped plate made of a ceramic material typified by aluminum nitride, silicon carbide, silicon nitride, aluminum oxide or the like.
- the thickness of the ceramic substrate 12 is, for example, 0.5 mm to 30 mm.
- the surface of the ceramic substrate 12 is a wafer placement surface 14 on which the wafer W is placed. On the wafer mounting surface 14, a plurality of irregularities may be formed by embossing, or a plurality of grooves may be formed.
- the ceramic substrate 12 has a central zone and an outer peripheral zone.
- the central zone is a circular region inside a virtual boundary line 16 (see FIG. 2) that is a circle concentric with the ceramic substrate 12.
- the outer peripheral zone is an annular region outside the virtual boundary line 16.
- the central zone resistance heating element 20 is embedded in the central zone of the ceramic substrate 12. As shown in FIG. 2, the central zone resistance heating element 20 is a coil wired in the manner of one stroke over the entire area of the central zone from one terminal 21 to the other terminal 22 of the pair of terminals 21 and 22.
- the wiring pattern of the central zone resistance heating element 20 is not particularly limited.
- the wiring pattern of the central zone resistance heating element shown in FIG. Examples of the coil material include Cu, Al, SUS, Fe, W, and Ti.
- the pair of terminals 21 and 22 are formed so that the entire shape of the pair of terminals 21 and 22 is a predetermined circle X (a circle indicated by a two-dot chain line in FIG. 2) when seen in a plan view.
- the terminal 21 appears as one semicircle portion obtained by dividing the circle X in half
- the terminal 22 represents the other semicircle obtained by dividing the circle X in half. It is formed to appear as a part.
- a pair of lands 31 and 32 are provided on the back surface of the ceramic substrate 12 (the surface opposite to the wafer mounting surface 14).
- the pair of lands 31 and 32 are formed in a semicircular shape corresponding to each of the pair of terminals 21 and 22.
- the terminal 21 and the land 31 are connected via a conductive member 23 embedded in the ceramic base 12.
- the terminal 22 and the land 32 are also connected via the same conductive member 24.
- the gap between the land 31 and the land 32 may be filled with an insulating material.
- the lands 31 and 32 are connected to a power source (not shown) for the central zone resistance heating element 20 via a cylindrical connection member 40.
- the connecting member 40 includes a columnar first member 41 having a semicircle on the bottom surface and a columnar second member 42 having a semicircle on the bottom surface so that the rectangular portions face each other.
- the insulating material 43 is formed so that the entire shape is a cylinder.
- the first member 41 and the insulating material 43, and the second member 41 and the insulating material 43 are bonded with a heat-resistant adhesive such as an epoxy resin.
- the first and second members 41 and 42 may be made of copper, for example, and the insulating material 43 may be made of ceramic, for example.
- At least the surfaces of the connecting member 40 that are joined to the lands 31 and 32 are ground so that the first and second members 41 and 42 and the insulating material 43 are on the same surface.
- the first member 41 is connected to one pole of a power source (not shown), and the second member 42 is connected to the other pole of the power source.
- the outer peripheral zone resistance heating element 50 is embedded in the outer peripheral zone of the ceramic substrate 12.
- the outer peripheral zone resistance heating element 50 is a coil wired in the manner of one stroke over the entire outer peripheral zone from one to the other of a pair of terminals (not shown).
- the wiring pattern of the outer peripheral zone resistance heating element 50 is not particularly limited.
- the pair of terminals of the outer peripheral zone resistance heating element 50 are similarly arranged in the same shape as the pair of terminals 21, 22 of the central zone resistance heating element 20, and the same land and connecting member as the pair of lands 31, 32.
- 40 is connected to a power source for the outer peripheral zone resistance heating element 50 through a connection member similar to 40.
- the cooling plate 60 is joined to the back surface of the ceramic substrate 12 via a bonding sheet 18 as shown in FIG.
- the cooling plate 60 is a disk made of metal (for example, made of Al or Al alloy), and incorporates a refrigerant passage 62 through which a refrigerant (for example, water) can pass.
- the refrigerant passage 62 is formed so that the refrigerant passes over the entire surface of the ceramic substrate 12.
- the refrigerant passage 62 is provided with a refrigerant supply port and a discharge port (both not shown).
- One through-hole 63 that faces the pair of lands 31 and 32 of the central zone resistance heating element 20 is provided at a position in the cooling plate 60 that does not interfere with the refrigerant passage 62.
- the diameter of the through hole 63 is slightly larger than the diameter of the circle X and the diameter of the connection member 40.
- the inner wall of the through hole 63 is preferably covered with an insulating film.
- the connecting member 40 is inserted into the through hole 63.
- one through hole facing the pair of lands of the outer peripheral zone resistance heating element 50 is provided in the same manner as the through hole 63 at a position in the cooling plate 60 that does not interfere with the refrigerant passage 62.
- Such a ceramic heater 10 can be manufactured according to the manufacturing method described in Japanese Patent No. 3897563, for example. Therefore, description about the manufacturing method of the ceramic heater 10 is abbreviate
- the ceramic heater 10 is disposed inside a sealed chamber of a semiconductor manufacturing apparatus (not shown).
- the chamber is equipped with a gas supply port for supplying a source gas such as silane gas and a vacuum port for exhausting the gas in the chamber.
- a target temperature is set, and the temperature of the ceramic substrate 12 is controlled by a controller (not shown).
- the controller inputs the temperature of the central zone and the outer peripheral zone of the ceramic substrate 12 from a thermocouple (not shown), and supplies power to the central zone resistance heating element 20 and the outer zone resistance heating element 50 so that each temperature becomes a target temperature.
- the temperature of the ceramic substrate 12 is controlled.
- the chamber is evacuated and a source gas is supplied into the chamber. Then, after the temperatures of the central zone and the outer peripheral zone of the ceramic substrate 12 substantially coincide with the target temperature, the wafer is mounted on the wafer mounting surface 14 of the ceramic substrate 12 while the temperature control of the ceramic substrate 12 is continued.
- the temperature of the wafer itself is lower than the target temperature, so that the measured temperature decreases by several degrees C. However, it rises again to the target temperature by temperature control by the controller. In this state, plasma is generated to form a semiconductor thin film from the source gas on the wafer.
- the ceramic heater 10 of the present embodiment corresponds to the first wafer heating apparatus of the present invention
- the ceramic substrate 12 corresponds to the substrate
- the central zone resistance heating element 20 and the outer zone resistance heating element 50 correspond to the resistance heating element.
- the pair of terminals 21 and 22 of the central zone resistance heating element 20 are formed such that the entire shape of the pair of terminals 21 and 22 is a circle X when viewed in plan. Therefore, as shown in FIG. 2, the central zone resistance heating element 20 may be designed so as to bypass one circle X, and the area where the resistance heating elements are laid out irregularly bypasses two circles. Smaller than Moreover, although it becomes an area
- a pair of lands 31 and 32 having shapes corresponding to the pair of terminals 21 and 22 are provided on the back surface of the ceramic base 12.
- the cooling plate 60 is provided with one through hole 63 that faces the pair of lands 31 and 32 at a position that does not interfere with the refrigerant passage 62.
- the through hole 63 may cause a temperature singularity in the wafer W, here, one through hole 63 is provided in the cooling plate 60 for the pair of terminals 21 and 22 of the central zone resistance heating element 20. ing.
- This also applies to the outer peripheral zone resistance heating element 50, and one through hole is provided in the cooling plate 60 for a pair of terminals of the outer peripheral zone resistance heating element 50. Therefore, it is easy to improve the thermal uniformity of the wafer W as compared with the case where through holes are provided according to the terminals.
- the ceramic substrate 12 is divided into a plurality of (two) zones, the central zone resistance heating element 20 is provided in the central zone, and the outer peripheral zone resistance heating element 50 is provided in the outer peripheral zone. Therefore, temperature adjustment can be performed for each zone.
- the terminals 21 and 22 are formed so as to appear as semicircular parts, respectively.
- the terminals 21 and 22 may have any shape as long as they appear as a circle as a whole.
- one terminal 121 is a circular portion of a predetermined circle X divided into a central circular portion and an outer ring (ring) portion of the circular portion.
- the other terminal 122 may appear as a C-shaped portion along the annular portion. In that case, as shown in FIGS.
- the land 131 provided on the back surface of the ceramic substrate 12 is formed in a circular shape corresponding to one terminal 121, and the land 132 is formed in an annular shape corresponding to the other terminal 122. It is formed.
- the land 132 may have the same C shape as the terminal 122.
- the connecting member 140 has an insulating cylinder 143 inserted between a circular cylindrical member 141 whose bottom surface is the same as the land 131 and an annular hollow cylindrical member 142 whose bottom surface is the same as the land 132. By bonding, the entire shape is formed as a cylinder.
- the cooling plate 60 is provided with one through hole 163 for the pair of terminals 121 and 122.
- the connection member 140 is inserted into the through hole 163.
- the pair of terminals 221 and 222 of the central zone resistance heating element 20 and the pair of terminals 251 and 252 of the outer zone resistance heating element 50 are collectively provided at the same position, You may form so that the whole shape of these four terminals 221,222,251,252 may become the predetermined
- the four terminals 221, 222, 251, and 252 appear as fan-shaped portions obtained by dividing a predetermined circle X into four parts with two diameters orthogonal to each other when seen in a plan view.
- four lands 231 to 234 are provided on the back surface of the ceramic base 12.
- Each land 231 to 234 is formed in a sector shape corresponding to each terminal 221, 222, 251, 252, and is connected to each terminal 221, 222, 251, 252 by each conductive member embedded in the ceramic substrate 12.
- the connection member 240 is formed by bonding the metal columnar members 241 to 244 having the same bottom surface as the lands 231 to 234 with the insulating material 245 sandwiched therebetween, so that The shape is formed to be a cylinder.
- the cooling plate 60 is provided with one through hole 263 for the four lands 231 to 234. A connection member 240 is inserted into the through hole 263.
- the lands 231 to 232 of the central zone resistance heating element 20 are connected to a power source (not shown) for the central zone resistance heating element 20 via the columnar members 241 and 242 of the connection member 240.
- the lands 233 to 234 of the outer peripheral zone resistance heating element 50 are connected to a power source (not shown) for the outer peripheral zone resistance heating element 50 via the columnar members 243 and 244 of the connection member 240.
- FIG. 10 to FIG. 13 the same components as those in the above-described embodiment are denoted by the same reference numerals.
- the ceramic heater 210 is an example of the second wafer heating apparatus according to the present invention. In this case, the same effect as that of the above-described embodiment can be obtained. In particular, here, since the entire shape of the four terminals is circular, the area where the resistance heating elements are irregularly laid out becomes smaller, and the number of through holes 263 provided in the cooling plate 60 also becomes smaller.
- the ceramic heater 10 in which the resistance heating elements 20 and 50 are embedded in the ceramic base 12 is illustrated.
- a disk-shaped heat-resistant resin sheet for example, made of polyimide resin or liquid crystal (Polymer) may be used.
- the connection member 40 in order to join the connection member 40 to the lands 31 and 32, first, cream solder is printed on the lands 31 and 32, then the first member 41 faces the land 31 and the second member 42 faces the land 32.
- the connecting member 40 may be set so as to be followed by soldering by reflow. Since the solder is repelled by the resin sheet and selectively gathers on the lands 31 and 32, a bridge is hardly formed between the lands 31 and 32. This also applies to the ceramic heaters 110 and 210.
- the central zone resistance heating element 20 and the outer peripheral zone resistance heating element 50 are built in the ceramic base 12, but only one resistance heating element may be built in the ceramic base 12, or the ceramic base 12. May be divided into three or more zones and a resistance heating element may be built in each zone. When dividing into three or more zones, it may be divided into a circular central zone and a plurality of annular zones with different diameters provided concentrically outside the central zone, or a circle is divided into a plurality of sector zones. May be. Any resistance heating element may be formed such that the pair of terminals has the same configuration and the same arrangement as the pair of terminals 21 and 22 (or the pair of terminals 121 and 122) of the above-described embodiment.
- the central zone resistance heating element 20 and the outer peripheral zone resistance heating element 50 are coils.
- the present invention is not limited to this, and may be, for example, a mesh (network) or a flat plate. May be.
- an electrostatic electrode for electrostatic chuck or a high-frequency electrode for plasma generation may be further embedded in the ceramic substrate 12.
- the present invention can be used for a semiconductor manufacturing apparatus.
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- Microelectronics & Electronic Packaging (AREA)
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
Description
片面がウエハ載置面である基体に抵抗発熱体が埋設されたウエハ加熱装置であって、
前記抵抗発熱体は、一対の端子の一方から他方まで一筆書きの要領で配線されており、
前記一対の端子は、平面視したときに前記一対の端子の全体形状が円形になるように形成されている、
ものである。
片面がウエハ載置面である基体に少なくとも2つの抵抗発熱体が埋設されたウエハ加熱装置であって、
各抵抗発熱体は、一対の端子の一方から他方まで一筆書きの要領で配線されており、
前記2つの抵抗発熱体の合計4つの端子は、同じ位置に集約して設けられ、平面視したときに前記4つの端子の全体形状が円形になるように形成されている、
ものである。
Claims (10)
- 片面がウエハ載置面である基体に抵抗発熱体が埋設されたウエハ加熱装置であって、
前記抵抗発熱体は、一対の端子の一方から他方まで一筆書きの要領で配線されており、
前記一対の端子は、平面視したときに前記一対の端子の全体形状が円形になるように形成されている、
ウエハ加熱装置。 - 前記一対の端子を平面視したときに、前記一対の端子の一方は、所定の円を半分に割った一方の半円部として現れ、前記一対の端子の他方は、前記所定の円を半分に割った他方の半円部として現れる、
請求項1に記載のウエハ加熱装置。 - 前記一対の端子を平面視したときに、前記一対の端子の一方は、所定の円を中央の円部とその円部の外側の円環部とに分けたうちの前記円部として現れ、前記一対の端子の他方は、前記円環部に沿ったC字部として現れる、
請求項1に記載のウエハ加熱装置。 - 前記基体の前記ウエハ載置面とは反対側の面には、前記一対の端子のそれぞれに対応した形状の一対のランドが設けられている、
請求項1~3のいずれか1項に記載のウエハ加熱装置。 - 前記基体の前記ウエハ載置面とは反対側の面に冷媒通路を内蔵する冷却板が接合され、
前記冷却板には、前記冷媒通路と干渉しない位置に前記一対のランドに対向する1つの貫通穴が設けられている、
請求項4に記載のウエハ加熱装置。 - 前記基体は、複数のゾーンに分けられており、
前記抵抗発熱体は、前記ゾーンごとに設けられている、
請求項1~5のいずれか1項に記載のウエハ加熱装置。 - 片面がウエハ載置面である基体に少なくとも2つの抵抗発熱体が埋設されたウエハ加熱装置であって、
各抵抗発熱体は、一対の端子の一方から他方まで一筆書きの要領で配線されており、
前記2つの抵抗発熱体の合計4つの端子は、同じ位置に集約して設けられ、平面視したときに前記4つの端子の全体形状が円形になるように形成されている、
ウエハ加熱装置。 - 前記4つの端子を平面視したときに、各端子は所定の円を互いに直交する2本の直径で4つに割った扇形部として現れる、
請求項7に記載のウエハ加熱装置。 - 前記基体の前記ウエハ載置面とは反対側の面には、前記4つの端子のそれぞれに対応した形状の4つのランドが設けられている、
請求項7又は8に記載のウエハ加熱装置。 - 前記基体の前記ウエハ載置面とは反対側の面に冷媒通路を内蔵する冷却板が接合され、
前記冷却板には、前記冷媒通路と干渉しない位置に前記4つのランドに対向する1つの貫通穴が設けられている、
請求項9に記載のウエハ加熱装置。
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JP7240499B2 (ja) * | 2019-07-16 | 2023-03-15 | 日本碍子株式会社 | シャフト付きセラミックヒータ |
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