WO1997042792A1 - Electric heating element and electrostatic chuck using the same - Google Patents
Electric heating element and electrostatic chuck using the same Download PDFInfo
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- WO1997042792A1 WO1997042792A1 PCT/JP1997/001529 JP9701529W WO9742792A1 WO 1997042792 A1 WO1997042792 A1 WO 1997042792A1 JP 9701529 W JP9701529 W JP 9701529W WO 9742792 A1 WO9742792 A1 WO 9742792A1
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- WIPO (PCT)
- Prior art keywords
- ceramic
- silicide
- fused
- heating
- film
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Classifications
-
- 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 [2D] plane, e.g. plate-heater
-
- 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
- H05B3/148—Silicon, e.g. silicon carbide, magnesium silicide, heating transistors or diodes
-
- 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 [2D] plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible
- H05B3/28—Heating elements having extended surface area substantially in a two-dimensional [2D] 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 [2D] plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material the insulating material being an inorganic material, e.g. ceramic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49082—Resistor making
Definitions
- the present invention relates to an electric heating element, and more particularly, to an electric heating element having a structure in which a coating of a resistance heating material is melt-fused on the surface of a ceramic insulating base material.
- the present invention relates to a structure of an electrostatic chuck, and more particularly, to a structure of an electrostatic chuck capable of rapidly and precisely controlling the temperature of a material to be processed such as a semiconductor substrate which has been electrostatically adsorbed.
- a ceramic heater In the field of energized heating elements, it is known that when a heater circuit is baked on a ceramic plate having good heat conductivity, a planar heating element with small temperature unevenness can be obtained.
- This type of heater called a ceramic heater, is required to have the following characteristics.
- the heater circuit material has excellent oxidation resistance and can be used even at high temperatures.
- the maximum operating temperature is limited by the melting point of the glass used for the binder, and it is impossible to use a high temperature such as 400 ° C to 500 ° C above 100 ° C.
- This evening Eve has a structure in which a paste of a high melting point metal such as tungsten is printed on a ceramic green sheet in a circuit pattern, a green sheet is further laminated on the printed circuit, and then pressed and sintered integrally.
- the final structure is a structure in which an electric heating circuit is built in a ceramic plate (both sides are baked), and both sides of the electric heating circuit are ceramic plates.
- Electric heating metals are limited to refractory metals such as tungsten and molybdenum that do not melt at the firing temperature of ceramics. Tungsten and molybdenum have weak defects in oxidation, and the ceramic surrounding the electric heating circuit has no defect and perfect confidentiality. Required. There is a problem with long-term use at high temperatures in the atmosphere. In addition, there is a problem that evening stainless steel, molybdenum, and the like have low electric resistance and low heat generation density. There is the above-mentioned problem in Ceramic Hi every night.
- silicides represented by molybdenum disilicide (MoSi 2 ) are very well known as materials that have extremely high oxidation resistance and can generate heat even in air and at high temperatures.
- silicide heating elements are very brittle. Due to this brittleness, glass powder is usually mixed and sintered into a plate or rod with a certain degree of strength. However, since glass is used as a binder, there is also a problem with heat resistance. In addition, the silicide itself has the property of softening at high temperatures, and there is a problem that the heating element hangs down and is deformed.
- the plasma processing temperature is an extremely important factor in achieving ultra-fine and high-precision plasma processing.
- etching processing only cooling is required to prevent excessive heating of the silicon wafer to be processed (etching processing).
- the temperature is set lower than the set temperature, and the natural temperature rise during the process is actually left to rest.
- the solution to this problem is to increase the temperature quickly in response to the actual processing speed.
- An adjustable mechanism is needed. In other words, a mechanism that can quickly and continuously adjust the temperature without dropping the processing bead is required.
- the present invention has been made in view of such circumstances, and its purpose is as follows: (1) using ceramics that have been sintered in advance as a base material, and performing either one-side baking or two-side baking of an electric heating circuit according to the purpose. 2) No pressurization is required, and the above-mentioned problem of distortion during firing of ceramics can be solved. 3) The adhesion strength between the circuit and the ceramic is high. 4) It has excellent oxidation resistance and can be used at high temperatures in the atmosphere. It is intended to provide a new type of heat-generating element that can be manufactured in a large size and a three-dimensional shape at low cost, and can be used for a heater with high resistance and high density.
- It also aims to provide an electrostatic chuck with a new structure that can fix semiconductor substrates and other workpieces by suction, and quickly heat or rapidly raise or lower the temperature to a preset temperature and precisely adjust to the set temperature. is there.
- the through-hole heating element of the present invention is characterized in that the microstructure of the insulating or nitride-based or ceramic-based ceramic substrate is a single-structure of silicide, a mixed structure of silicide and Si, or a microstructure of Si.
- a coating of resistance heating material consisting of a single structure It is characterized by having a fused structure.
- the current-carrying heating element of the present invention on the surface of the electrically insulating ceramic base material,
- the alloy containing 0.5% or more active metal and having a microstructure of a silicide simple substance is characterized by having a structure in which a coating of a resistance heating material composed of a mixed structure of silicide and Si is fused. I do.
- the ceramic substrate is an aluminum nitride-based ceramic and the microstructure of the resistance heating material is a mixture of silicide and Si.
- the ceramic substrate is a silicon nitride ceramic and the microstructure of the resistance heating material is a structure in which silicide and Si are mixed.
- the ceramic substrate is a silicon carbide ceramic and the microstructure of the resistance heating material is a structure in which silicide and Si are mixed.
- the ceramic substrate is an oxide ceramic is preferable.
- the oxide ceramic is an alumina ceramic and the microstructure of the resistance heating material is a silicide structure.
- the heating mechanism is connected to the bottom of an electrostatic adsorption mechanism comprising a mysterious electric ceramic and electrodes formed on the bottom of the ceramic.
- the heating mechanism is electrically insulating and has a linear expansion coefficient.
- a film of an electrothermal material that is fusible to the ceramic is sandwiched between two ceramic substrates that are the same or similar, and the film has a structure in which the film is fused to the two substrates.
- a heating mechanism is connected to the bottom surface of the electrostatic chuck mechanism, and a cooling mechanism is connected to the bottom surface of the heating mechanism.
- the heating mechanism is electrically insulating and has two linear expansion coefficients of the same or similar. It is characterized in that a film of an electrothermal material that is fusible to the ceramic is sandwiched between the ceramic substrates, and the film has a structure in which the film is fused to the two substrates.
- the present invention is also characterized in that the two ceramic base materials of the dielectric ceramic and the heating mechanism are aluminum nitride ceramics.
- the above-mentioned electric heating material may be configured such that the microstructure is a metal having a mixed structure of silicide and Si.
- FIG. 1 is a view for explaining an embodiment of a current-carrying heating element according to the present invention.
- FIG. 2 is a diagram illustrating another embodiment of the energizing heating element of the present invention.
- FIG. 3 is a view for explaining still another embodiment of the energizing heating element of the present invention.
- FIG. 4 is an explanatory view of an embodiment of a current-carrying heating element according to the present invention.
- FIG. 5 is a diagram showing an example of a heater circuit for a fused metal of a current-carrying heating element according to the present invention.
- FIG. 6 is a sectional view taken along line AA of FIG.
- FIG. 7 is a diagram showing an example of a manufacturing process of the structure of FIG.
- FIG. 8 is an explanatory diagram of a structure for preventing a short circuit in a heater circuit.
- FIG. 9 is an explanatory view of a sealing structure of a ceramic end face.
- FIG. 10 is an explanatory diagram of a structure in which terminals are connected to terminals of one circuit of a heater.
- FIG. 11 is an explanatory diagram of a structure in which a terminal is connected to a terminal of an all-night circuit.
- Fig. 12 is an explanatory diagram of the structure in which a lead wire is connected to the terminal of the heater circuit.
- FIG. 13 is an explanatory view of an embodiment of a current-carrying heating element of the present invention.
- FIG. 14 is an explanatory view of an embodiment of the current-carrying heating element of the present invention.
- FIG. 15 is an explanatory diagram of the embodiment.
- FIG. 16 is an explanatory diagram of the embodiment.
- FIG. 17 is an explanatory view of a basic structure of the electrostatic chuck of the present invention (a dielectric ceramic is a sintered body).
- FIG. 18 is an explanatory view of a basic structure of the electrostatic chuck of the present invention (a dielectric ceramic is formed as a film).
- FIG. 19 is an explanatory view of the basic structure of the electrostatic chuck of the present invention (in which the cooling mechanism is joined to the structure of FIG. 17).
- FIG. 20 is an explanatory diagram of a basic structure of the static chuck of the present invention (a structure in which a cooling mechanism is joined to the structure of FIG. 18).
- FIG. 21 is an explanatory diagram of the electrode structure when the dielectric ceramic is a sintered body.
- FIG. 22 is an explanatory diagram of the electrode structure when the dielectric ceramic is a sintered body.
- FIG. 23 is an explanatory diagram of the structure of the electrode when the dielectric ceramic is a sintered body.
- FIG. 24 is an explanatory view of the structure of an embodiment of the static chuck according to the present invention.
- FIG. 25 is an explanatory diagram of the structure of an embodiment of the electrostatic chuck of the present invention.
- FIG. 26 is an explanatory diagram of the structure of an embodiment of the electrostatic chuck of the present invention.
- nitride As a representative of electrically insulating nitride-based and carbide-based ceramics, nitride There are aluminum carbide ceramics, silicon nitride ceramics and silicon carbide ceramics.
- the electrically insulating nitride-based and carbide-based ceramics of the present invention include these aluminum nitride ceramics, silicon nitride ceramics, silicon carbide ceramics alone, and these ceramics and other nitrides, carbides, borides and oxides. Includes composite ceramics with ceramics.
- nitrides and carbide ceramics aluminum nitride, silicon carbide, and their composite ceramics are most suitable for use as a base of a conductive heating element because of their excellent thermal conductivity.
- the two ceramics do not necessarily have to be the same ceramic, but it is better to select a ceramic with an approximate linear expansion coefficient.
- Si forms most metals and silicides, except for elements that make up a solid solution with Si, such as Ge.
- the first silicide is formed at a certain composition.
- the composition is defined as S i (1).
- S i and S i (1) a structure in which the silicide phase of the metal X is mixed in the matrix of the metal X, or the matrix of the metal X
- the structure has a mixture of silicide phases.
- Si (1) is the richest silicide of element X and Si (2) is the richest silicide of Si.
- This area is a mixed structure of Si and silicide.
- the third, fourth, fifth, ... Elements are added to the above-described binary system of X—Si, the basic skeleton of the tissue itself, that is, the basic existence of silicide in the matrix
- the typical skeleton does not change.
- the third, fourth, fifth, ... elements are solid-dissolved in the matrix, are dissolved in silicide to form double silicides, or form other compounds and crystallize in the matrix. Or, at least the silicide (or double silicide) does not disappear from the matrix.
- silicide is used as a generic term including the original silicide and double silicide.
- the composition for fusing (1) Si ⁇ 5%
- the composition ranges of (4), (3) and (5) can be used.
- the composition ranges of 1, 3, and 4 are suitable.
- composition of (2), (3), and (4) is not only capable of fusing to the above-mentioned electrical insulating nitride and carbide ceramics, but also
- the coefficient of linear expansion is 4 to 8 X 10 (especially the composition range of 3 and 4 is 4 to 6 X 10 ' 6 ), and by adjusting the amount of silicide in the microstructure as necessary
- the coefficient of linear expansion can be adjusted, matched to the ceramic of the base material, the thermal stress at the fusion interface is minimized, stable up to high temperatures, and the heating element This is extremely advantageous for preventing the separation of
- the composition ranges (3) and (4) have the advantage that the melting temperature can be lowered because the melting point is low.
- silicide hot Contact Omune 1000 e C or higher
- silicide or metal having a structure containing silicide is extremely suitable as a coating to be fused to a ceramic for the purpose of a heater used at a high temperature.
- composition ranges of 1, 3, and 2 are affected by oxidation resistance from the area of 1, and moreover,
- the length of the resistance circuit can be shortened, and a heater with a large pet density per unit area can be obtained.
- the range of composition of (2), (3), and (4), especially the composition range of (3) and (5), is more preferable for the energizing heating element than the area of (4).
- Area (1) has a large coefficient of thermal expansion and low electrical resistance, so it is necessary to reduce the thickness of the coating to reduce thermal stress and increase electrical resistance.
- the film thickness is less than 20> tm, most preferably less than 10m.
- the fusion film exceeds 2 O ⁇ m, it is easy to peel off.
- the X elements of the above X—Si alloy include Cr, Mo, W, Fe, Ni, Co, B, P and active metals, and Pt, Pd, Rh, Ir, Cu, Ag and other metals.
- the silicide forming element and the like can be appropriately selected according to the purpose. These elements may be used singly or as a mixture of two or more depending on the purpose. For example, the addition of two or more elements is effective in miniaturizing silicide in the mouth mouth structure.
- the amount of addition can be appropriately selected as long as it is within the range of forming the microstructure of (1) and (3) above, that is, the range of silicide generation, and the range of forming silicide and Si.
- the preferred range is the range of the microstructure of (3), that is, the composition range in which silicide and Si are mixed.
- the coefficient of linear expansion and electric resistance can be appropriately adjusted, and the melting point is low, and the ceramic can be fused to the ceramic at a low temperature. Is also advantageous.
- an active metal element is particularly preferable among these elements.
- Elements other than the above elements may be added as long as the microstructure is not changed.
- an element that forms a solid solution with Si and lowers the electrical resistance of Si, or an element that penetrates into silicide and changes the properties (electrical resistance, linear expansion coefficient, melting point, etc.) of the silicide is intended May be added as appropriate.
- a structural Si raw material in which trace elements (Fe, P, Al, C, etc.) are contained in the Si raw material used. It is also effective to adjust the electrical resistance by adding a trace amount of trivalent, pentavalent elements such as B, A1, and P, or other elements to the high-purity silicon raw material. .
- B and P are also dissolved in Si in a trace amount and form silicide at the same time.
- Si is originally a semiconductor and has a very high resistance
- trace elements regarded as impurities significantly improve the conductivity of Si, and thus the Si raw material of the present invention contains the trace elements as described above.
- Si is rather preferred.
- silicidation A good example of an element for changing the characteristics of the silicide from entering (electric resistance, linear expansion coefficient, melting point, etc.) in the object is to penetrate into the MO S i 2 (Mo 5 Al 3) becomes S ⁇ 2 A1 may form double silicide. In this case, Mo S i 2 a melting point 2060 ° C falls 1800 e C.
- Ge is an element with the same properties as Si, and can form a solid solution in all proportions without producing silicide with Si, so it can be added as appropriate according to the purpose and application. It is effective as a controlling element for melting point and electric resistance.
- Active metals are elements that promote wetting and diffusion in ceramics.
- the effect of improving the wettability is apparent from the addition of a small amount of about 0.1%, but in order to obtain a practical effect, the addition of 0.5% or more is preferable.
- the amount of Si decreases relatively as the amount of active metal increases.
- silicide having a composition of Ti 3 Si is generated at around 84%.
- Ti A silicide called Ti Si 2 is generated at around 46%.
- T i is less than 46%, i.e. S i exceeds 54% when T i S i 2 and S i of the eutectic appears. Therefore, the area of 1 is the range from T i: 84% to 100%.
- the area (2) has a T i of 46 to 84%, and the area (3) has a range of 0.5% to less than 46%. Therefore, S i—T i binary alloys Taking into account oxidation resistance in the air, the upper limit of Ti is approximately 84%. Of course, if the third, fourth,... Elements are added, the upper limit value naturally changes.
- Si may be replaced with an oxidation resistance-imparting element such as Cr.
- an oxide ceramic can be selected for the base material.
- the type of the oxide ceramic may be appropriately selected so that the coefficient of linear expansion matches the coefficient of linear expansion of the metal to be fused.
- the type may be appropriately selected from oxides having a linear expansion coefficient in a range of approximately 3 to 9 X 10.
- the composition of the fused metal is most preferably a silicide composition (2). Since the linear expansion coefficient of the silicide generally distributed in the range of 5 to 9 X 1 0- 6, it is possible to select an approximation to that of the substrate ceramic from these, ensure consistency of linear expansion coefficient be able to.
- the bonding layer is mainly ceramic heating element undissolved in fusion materials as required for the adjustment of electric resistance (S i C, Z r 0 2 , etc.) or other powder of an insulating ceramic, fiber
- a powder, a fiber, a high-melting metal powder, a fiber, or the like, which is hardly soluble in the fusion metal for example, a heating element of an intermetallic compound such as a high-melting silicide or a boronide may be mixed.
- the powder and the fiber of the heating element may be combined with the fusion material as a binder and simultaneously fused to the base ceramic.
- the fusion material can also be used as a brazing material, and can be used by bonding ceramic, metal, and intermetallic compound heat generating resistor foils, plates, and wires to a ceramic substrate.
- a brazing material can be used by bonding ceramic, metal, and intermetallic compound heat generating resistor foils, plates, and wires to a ceramic substrate.
- metal foil add metal foil such as W, Mo, etc. to two ceramics. By pinching and wrapping the whole surface with brazing material, the problem of oxidation resistance of W and Mo can be solved at the same time.
- the thickness of the fused film is approximately the number !! A range of! ⁇ 500 m is preferred.
- the resistance heating film of the present invention can be either a single-sided fusion type in which one ceramic substrate is fused to one side, or a double-sided fusion type in which the ceramic is sandwiched between two ceramics and fused to both ceramics. Applicable.
- the molten metal may penetrate into the gap between circuits and short-circuit the circuit.
- the gap between the two ceramics between circuits is made wider than the thickness of the fused metal film, it is effective in preventing short circuits.
- a groove is formed in advance between the circuits before the fusion, and the circuits are overlapped and fused.
- a metal film to be fused may be formed on the fusion surface by a film forming means such as thermal spraying, sputtering, PVD, CVD or the like, and this may be heated, melted or fused.
- a film forming means such as thermal spraying, sputtering, PVD, CVD or the like, and this may be heated, melted or fused.
- some of the components may be formed into a film, and the other elements may be melted and fused by powder coating or metal foil sticking.
- the atmosphere for fusion is preferably vacuum, reduction, or inert atmosphere.
- the resistance heating film is The two-sided fusion type is superior in thickness uniformity, flatness and uniform fusion. Also, in the single-side fusion type, if the coefficient of linear expansion between the ceramic substrate and the resistance heating film is different, the ceramic may be slightly deformed after fusion. In addition, the ceramic surface may be slightly deformed during heating. On the other hand, when fusion is performed between two ceramics having the same or similar linear expansion coefficients, deformation does not occur after fusion even if there is a slight difference in the linear expansion coefficient between the resistance heating film and the ceramic substrate. Also, there is a feature that no deformation occurs during heating. From the viewpoint of uniform heating and uniformity of temperature distribution, a double-sided fusion structure is preferable.
- the double-sided fusion bonding structure only the portion (end face) corresponding to the thickness of the fusion film is exposed to the outside of the heat generating circuit, which is an extremely preferable structure in terms of contact resistance and oxidation resistance. Furthermore, the exposed part of the part corresponding to the thickness is coated with a ceramic film by the sol-gel method, or an inorganic adhesive is filled in the gap, glass is sealed, or the periphery of the ceramic substrate is fused It can be protected from the outside by sealing it with metal.
- the fusion temperature must be at least the temperature at which the melt appears, that is, the solidus temperature or higher, and most preferably the liquidus temperature or higher.
- the Si raw material for the fusion metal can be appropriately selected and used, from Si for semiconductor use to Si used for component adjustment of metal oxide.
- trace elements such as Fe, C, P, and A1 are contained, and these trace elements improve the conductivity of Si, and are effective for the present invention.
- Si P-type semiconductor, N-type semiconductor
- impurities for semiconductor use is added is also effective in the present invention.
- FIGS. 1 to 3 are diagrams illustrating an embodiment of a single-sided fusion bonding structure according to the present invention.
- Fig. 1 shows a structure in which a silicide or silicide + Si or Si film is fused to the entire surface of a pive-shaped ceramic substrate.
- Fig. 2 shows a spiral silicide or
- FIG. 3 is a diagram illustrating a structure in which a silicide + Si or Si film is fused
- FIG. 3 is a structure in which a circuit pattern is fused to a plate-shaped ceramic base material.
- Fig. 1 is a substrate made of ceramic pipe such as aluminum nitride, silicon nitride, alumina, chromia, etc.
- 2 is a silicide fused to the substrate, or a fusion of silicide + Si or Si. Layer.
- Both ends of the fusion layer are connected to conductors connected to an external power source by mechanical or metallurgical means.
- FIG. 2 shows an example in which a spiral fusion film is formed on a round bar base material
- FIG. 3 shows an example in which a wiring circuit pattern fusion film is formed on a plate-like base material.
- These patterns may be formed by applying a fusion metal powder in the form of a pattern and fusing it, or by forming a fusion film once on the entire surface and removing unnecessary parts by etching, blasting, etc.
- the target pattern may be formed by removing the portion.
- FIGS. 5 to 16 are views for explaining an embodiment of the double-sided fusion bonding structure of the present invention.
- Fig. 5 is a diagram showing an example of a heater circuit of fused metal.
- the actual structure is a structure in which this heater and heater circuit is sandwiched between two ceramic substrates and fused to both sides of the ceramic. .
- FIG. 6 shows a structure in which such a heater circuit is sandwiched between two ceramic substrates, and is a cross-sectional view taken along line AA.
- FIG. 7 is a diagram showing an example of a manufacturing process of the structure of FIG.
- FIG. 8 is a diagram illustrating a structure for preventing a short circuit in a heater circuit.
- the heater circuit 3 for the fused metal is sandwiched between the two ceramic substrates 4 and 5 and is fused.
- the fused metal not only serves as a heater circuit, but also as a brazing filler metal joining the two ceramics.
- the circuit is formed by, for example, the following method.
- One or both of the two ceramics are coated with a film of the fusion metal on the circuit pattern, and the two ceramics are superposed, heated, melted and fused.
- the film of the fusion metal is formed by a method such as sputtering, PVD, or CVD.
- (3) Draw a circuit pattern using a compromise between (1) and (2), that is, using both film deposition and powder application, and heat and melt to fuse. Or
- a fusion film is formed by fusing a metal to the bonding surface of each ceramic beforehand, and this film is removed by a method such as shot blasting to form a circuit pattern.
- the two ceramics with the pattern are superimposed on each other in good alignment, heated and re-melted to join the two ceramics. And so on.
- a metal is fused in advance to each ceramic bonding surface to form a fusion film 6, and this film is removed by a method such as shot blasting or etching to form a circuit pattern. After forming, superimpose, power! ] It is also possible to use a method of heating (pressing and heating as necessary) and sintering at a temperature below the melting point.
- the fused metal may penetrate laterally and short-circuit the circuit. As the metal film becomes thicker, a short circuit is more likely to occur.
- a groove 7 may be formed in the gap between the circuits to widen the gap between the ceramic plates.
- the fusion of the sealed closed circuit 8 is performed at the same time as the fusion of the heater circuit, and the same metal as the fusion metal of the heater circuit may be fused. What is necessary is just to use the material which can be fused under fusion conditions.
- solidification may be performed by impregnating with a ceramic adhesive. Further, glass may be fused.
- FIG. 9 shows that the heater circuit fusion metal is applied to one or both of the two ceramics as shown in the figure, and at the same time, the heater circuit fusion metal is
- FIG. 3 is a diagram showing a structure in which a material that can be fused under the same fusion conditions as a fusion metal of a heater circuit or a fusion metal of a heater circuit is applied, overlapped, and simultaneously heated and fused.
- Both the heater 1 circuit and the closed circuit 8 are shown in dotted lines because they are hidden in the ceramic and do not appear in the table.
- the heater circuit and the closed circuit are electrically insulated from each other.
- connection structure is effective for connecting the terminal of the heater circuit to the external power supply.
- (1) Solder a metal terminal having a linear expansion coefficient similar to the linear expansion coefficient of the ceramic substrate used, and connect the metal terminal to the lead wire.
- FIG. 10 shows a structure in which terminal metal is directly attached to a terminal of the circuit
- FIG. 11 shows a structure in which the terminal of the circuit is drawn out to the outer surface of the ceramic base material and is attached to the outer surface.
- two holes (for a single phase) and three holes (for a three phase) for drawing out the circuit are drilled in one side of the ceramic base material, and the metallized metal is applied along the inner surface of the hole with the fusion metal to reach the circuit outside. Pull out and braze it where it was pulled out.
- a structure may be used in which a lead wire made of a metal (Mo, W, etc.) is inserted directly, the gap between the lead wire and the hole is filled with a piece of material, and the terminal of the circuit is directly brazed. Or make the hole a small diameter hole, fill the hole with the fusion metal, conduct to the outside, and braze to the lead wire.
- a lead wire made of a metal Mo, W, etc.
- the ceramic piece 9 may be joined to the heater-circuit, a lead wire may be inserted into the hole of the piece 9, brazed and fixed.
- the terminals When forming the circuit using the fusion metal itself, the terminals may be brazed at the same time, or after the circuit is formed, a high-temperature brazing agent with excellent oxidation resistance, such as Ni brazing, may be used. May be attached.
- a high-temperature brazing agent with excellent oxidation resistance such as Ni brazing
- the terminal material is Mo, W, or aluminum nitride ceramic, silicon nitride ceramic, silicon carbide ceramic.
- a terminal of a composite material formed by impregnating a porous ceramic body with a fusion metal is also suitable.
- Metal terminals and lead wires may be appropriately selected from solid materials, bundled wires, laminated foils, and woven fabrics.
- the heating mechanism of the present invention comprises an electrically insulating ceramic material having the same or similar linear thermal expansion coefficient and a film of an electrothermal material fusible to the ceramic sandwiched between two ceramic substrates. It consists of a ceramic heater that has a structure fused and fused to a ceramic heater.
- a Si-based alloy is preferable.
- Si produces most metals and silicides.
- X is an element that forms silicide with Si
- the basic change of the mouth structure due to the change of Si in the X—Si alloy is as follows.
- the first silicide is formed at a certain composition.
- its composition be S i (1).
- S i and S i (1) a structure in which the silicide phase of the metal X is mixed in the matrix of the metal X, or the matrix of the metal X
- the structure has a mixture of silicide phases.
- Si (1) is the richest silicide of element X
- S i (2) is the richest silicide of Si.
- this area is a mixed structure of one or more silicides.
- This area is a mixed structure of Si and silicide.
- the third, fourth, fifth, ... Elements are added to the above-described binary system of X—Si, the basic skeleton of the tissue itself, that is, the basic existence of silicide in the matrix
- the typical skeleton does not change.
- the third, fourth, fifth, ... elements are solid-dissolved in the matrix, are dissolved in silicide to form double silicides, or form other compounds and crystallize in the matrix. Or, at least the silicide (or double silicide) does not disappear from the matrix.
- the expression “silicide” is used as a generic term including the original silicide and double silicide.
- the composition ranges (2) and (3), especially the composition range (3) are suitable.
- the ceramic base material aluminum nitride-based and silicon nitride-based ceramics are preferable in the composition range of (3), and aluminum nitride-based ceramic is particularly preferable.
- alumina-based ceramic is preferable.
- ⁇ ⁇ Si single structure is not preferred as an electrothermal alloy because its electrical resistance is too high.
- alumina ceramic can be used as the base material.
- Both 2 and 3 have excellent oxidation resistance in air and at high temperatures (100 ° C or more)
- Aluminum nitride, silicon nitride, and alumina are selected for the fusion of the electrothermal alloy.
- the linear expansion coefficients of (2) and (3) are close to those of alumina, aluminum nitride, and silicon nitride. This is because thermal stress at the fusion interface can be minimized.
- the X elements of the above Si—X alloy include Cr, Mo, W, Fe, Ni, Co, B, P and active metals, and Pt, Pd, Rh, Ir, Cu, Ag and Other silicide forming elements and the like can be appropriately selected according to the purpose. These elements may be used singly or as a mixture of two or more depending on the purpose.
- active metal elements are active metal elements.
- Active metals are elements that promote wetting and diffusion in ceramics.In the present invention, active metals activate V, Nb, Ta, Ti, Zr, Hf, Y, Mn, Ca, Mg, rare earth elements, aluminum, etc. Expressed as metal.
- the fusion film to be fused can be smoothed, flattened, and thinned, and a uniform and large electric resistance film can be obtained, and the fusion strength is also improved.
- the effect of improving the wettability is apparent from the addition of a small amount of about 0.1%, but in order to obtain a practical effect, the addition of 0.5% or more is preferable.
- the area of 2 is 46% (TiS i 2 ) ⁇ T i ⁇ 75% (T isS i 3 ).
- Area of 2 is, 40% (Z r S i 2) ⁇ T i ⁇ 93% (Z r 4 S i) 3 silicide sections of the Z rS i 2, S i + Zr S i 2 microstructure .
- the most preferred ranges are S i-T i alloy, T i: 10 to 25%, and S i -Z r alloy, Z r: 10 to 30%. In addition, all are weight%.
- the above-described ceramic substrate is integrally joined to the bottom surface of the suction mechanism of the electrostatic chuck according to the present invention, so that an object to be processed such as a semiconductor substrate which has been sucked can be quickly moved. Can be heated quickly.
- a cooling mechanism is added to the bottom surface of the heating mechanism by adding a cooling function, and precise temperature control becomes possible by using both heating and cooling.
- the order of the cooling mechanism, the heating mechanism and the electrostatic suction mechanism is an essential condition.
- the cooling mechanism enters between the heating mechanism and the electrostatic adsorption mechanism, and the gap in the cooling circuit of the cooling mechanism becomes a heat insulating layer, and heating is performed. Since the heat transfer from the mechanism to the electrostatic attraction mechanism is hindered, there is a problem that the rate of temperature rise is slow when the substrate is heated. In other words, in actual processing, the time during which the temperature changes from low to high and high to low is a complete loss time, and an increase in this loss time leads to a decrease in productivity. By reversing the order, the loss time during heating increases, causing a significant drop in productivity.
- the expression “integral coupling” of the electrostatic attraction mechanism, the heating mechanism, and the cooling mechanism means the following.
- this corresponds to a case where a dielectric ceramic is formed on a ceramic heater by film formation. That is, when an electrode metal film is formed on the ceramic heater and a dielectric ceramic film is further formed thereon, or a ceramic electrode plate is bonded on the ceramic heater, and This is where the dielectric ceramic film is formed.
- Metal-to-metal is in the category of metallurgical joining, but sintering, or sintering of combinations of metal-ceramic and ceramic-ceramics that do not fall into the category of metallurgical joining.
- the electrostatic chucking mechanism of the present invention means a so-called electrostatic chucking mechanism of an electrostatic chuck.
- the electrostatic attraction mechanism is a general term for a structure mainly composed of a dielectric ceramic and a structure including an electrostatic induction electrode formed on the back surface of the ceramic.
- the main part is a structure combining a dielectric ceramic and an electrostatic induction electrode formed on the back of the ceramic.
- the structure mainly composed of a dielectric ceramic, an electrostatic induction electrode formed on the back surface of the ceramic, and a ceramic insulating plate lining the back surface of the electrode is a suction mechanism.
- the dielectric ceramic is a dielectric ceramic sintered body, or a dielectric ceramic film, that is, a dielectric ceramic film formed by thermal spraying, or a thin film treatment such as sputtering or CVD, or Any of those formed by other film forming processes can be selected.
- the dielectric ceramic is not limited to only a ceramic having a particularly high dielectric constant. In view of the phenomenon that even if the thickness of ordinary electric insulating ceramics is reduced, the attraction force increases, the general dielectric ceramics having a low dielectric constant in the present invention are also included in the category of "dielectric ceramics".
- the material of the dielectric ceramic is ceramic. It is preferable to use the same ceramic as the heater or to select one having the same or approximate linear expansion coefficient. That is, when the ceramic capacitor is made of aluminum nitride, it is preferable to select the same aluminum nitride-based ceramic or one having the same or approximate linear expansion coefficient.
- a normal electric insulator ceramic having a low dielectric constant is used as the dielectric ceramic (for example, when aluminum nitride is used as the dielectric ceramic)
- a high dielectric constant ceramic for example, when using aluminum nitride as the dielectric ceramic
- Addition of (titania) component is also effective.
- a heating mechanism (ceramic heater) is connected to the back of the electrostatic attraction mechanism.
- the heating mechanism that is, the ceramic surface of the ceramic heater may be used as an insulator at the back of the electrostatic attraction mechanism. .
- a layer of a different material may be inserted into the connection surface for the purpose of buffering stress.
- the “electrostatic chucking mechanism” of the present invention is a generic term including these inserted layers.
- a coolant circulation path is provided in the base material, and liquid and gas cold soot is circulated in the coolant circulation path for cooling.
- a groove is formed in the base material, or a conduit is embedded in the base material, or a partition plate is spirally wound, and blind plates are joined to both end surfaces to form a spiral circulation path, or
- the structure incorporating the pipe is formed by various methods, such as forming a metal structure or by welding, or the structure incorporating the pipe is formed of a ceramic sintered body.
- any of a metal having good thermal conductivity, ceramics, or a composite material of metal ceramics may be used.
- the metal / ceramic composite material automatically changes its coefficient of linear expansion by changing the ratio. This is advantageous in reducing the residual stress at the joint.
- it is effective to insert layers of different materials for the purpose of relaxing residual stress.
- Example 1 double-sided fusion type
- Ceramic substrate Uses four types of substrates: aluminum nitride, silicon nitride, silicon carbide, and alumina. Silicon carbide has electrical resistance of 10 11 ⁇
- Substrate dimensions 10x30x0.6 mm plate.
- Fused metal Formulated on the above ceramic substrate (aluminum nitride, silicon nitride, silicon carbide, alumina) with the following composition (Table 1) with a width of 2 mm and a length of 22 mm as shown in Fig. 13
- the metal powder thus obtained was mixed with an ethanol solution of polyvinyl alcohol to form a paste.
- the same ceramic substrate with holes (01 mm) at both ends shown in Fig. 14 was overlaid and dried. Then, it was melted by heating and fused as shown in FIG. The distance between the holes is 20 mm.
- the raw material for Si is a powder obtained by crushing a semiconductor substrate and a powder of 99.999% purity (Al, Mg, Ca, Na ⁇ 1 ppm).
- the powder obtained by crushing a semiconductor substrate is B-doped P-type Si.
- the resistance value of the B-doped P-type Si is 0.0 to 0.0 IQ'cm. Samples using the B-doped P-type Si were labeled “P-type Si”, and those without the label were powdered with 99.999% purity.
- Heating atmosphere is vacuum (5 X 10- 5 T orr) and argon. Fusion
- the microstructure of the deposited metal is the range of the microstructure of 1, 3, and 4 above, that is, the range of formation of silicide, the range of formation of Si and Si mixed structure, and the three composition components of Si single structure. I chose.
- Double silicide Base material A LN is aluminum nitride
- SiC silicon carbide
- SiN is silicon nitride
- Atmospheres are argon atmosphere for No. 1 and 18 and vacuum atmosphere for others
- Example 1 An AC voltage was applied to the sample of Example 1 to perform a heating test. Heated to 500 in 5 minutes and allowed to cool to room temperature. This was repeated 100 times. None of the samples had peeling or cracking of the heater.
- Heater circuit fused to one side of ceramic substrate only (single-sided fusion structure) and structure fused to both ceramics sandwiched between two substrates (double-sided fusion structure)
- the thickness unevenness (irregularity, flatness), width unevenness, and surface properties were compared.
- Ceramic substrate plate with dimensions 100 x 100 x 0.6 mm of aluminum nitride substrate.
- Fused metal Two components with different wettability are selected as the fused metal. High purity Si (99, 99%) and Si—25% Ti were selected and compared.
- the Si powder (particle size: 325 mesh under) was mixed with an ethanol solution of polyvinyl alcohol to form a paste, which was printed on the surface of the aluminum nitride substrate in a circuit pattern shown in FIG.
- the width of the circuit is 10 ⁇ , and the distance between the circuit and the circuit is 5 mm.
- the high-purity Si sample was heated to 1450 ° C and fused.
- the sample of S i-25% T i was heated to 1400 ° C and fused.
- the coating of the high-purity Si sample was swelled and became a coating with irregularities. Ma It was also observed that the width of the circuit pattern was also narrower than the originally printed width.
- the sample of S i—25% T i formed a flat film with almost no irregularities.
- the width of the circuit pattern was almost the same as the originally printed width.
- the double-sided fused sample sandwiched between two ceramics was coated on both sides of the high-purity Si sample and the Si-25% Ti sample because the sample was sandwiched between the ceramic plates from both sides. It was completely fused without climbing, and a flat film without unevenness was formed. In addition, the width of the circuit pattern was fused almost as wide as the originally printed width.
- the powdered metal prepared in the above composition is mixed with a solution of polyvinyl alcohol in ethanol to form a paste, which is then cut into pieces of the above ceramic plate (lower plate).
- a solution of polyvinyl alcohol in ethanol was then cut into pieces of the above ceramic plate (lower plate).
- a single-sided fused sample was prepared by coating the entire surface of the above ceramic plate on one side, drying, heating and melting at 1400 ° C in vacuum (5 x 10 s Torr). .
- the double-sided fusion structure was found to be more effective in preventing deformation during heating than the single-sided fusion structure.
- Ceramic substrate Uses three types of substrates: aluminum nitride, silicon carbide, and silicon nitride. Use silicon carbide with air resistance of 10 11 ⁇ -cm.
- Substrate dimensions 10x30x0.6 mm plate.
- Fused metal As shown in Fig. 4, one side of the above ceramic substrate
- a 2 mm wide, 22 mm long metal powder prepared according to the following composition (Table 2) was mixed with a polyvinyl alcohol ethanol solution to form a paste, which was applied very thinly and dried. Heated, melted and fused.
- the raw material of Si is a powder obtained by crushing a semiconductor substrate, and 99.999 % Pure powder was used.
- the powder obtained by crushing a semiconductor substrate is a B-doped P-type Si.
- the resistance value of the P-type Si subjected to B doping is 0.0 to 0. IQ'cm.
- Heating atmosphere is argon and vacuum (5 x 10 '5 To rr ).
- microstructure of the fused metal is in the range of microstructures 1, 3, and 4 above, namely, the range of silicide formation, the range in which silicide and Si mixed structure are formed, and the three compositions of Si single structure. I chose. Electrical resistance was measured at a distance of 20 mm.
- the mixture was heated to 50 (TC in 105 minutes and allowed to cool to room temperature. This was repeated 100 times.
- Example 5 An oxidation resistance test of the fused metal was performed.
- the sample of Example 5 was heated to 1000 for 5 hours.
- Ceramic substrate Aluminum nitride
- Substrate dimensions 10x25x0.6 mm plate.
- the ceramic plate (lower plate) was sputtered on top of TiO.5 ⁇ m and Ti over 4 / m over a range of 2 mm wide and 22 mm long on one side.
- C Both ends shown in Fig. 14 A lmm diameter hole (distance between holes: 20mm)
- One side of the same 25-digit ceramic plate is 2mm wide and 22mm long, with 1 "; 1 at 0.5Aim, and Si over 4m with 4m I did it.
- An electrode terminal was inserted through a 1 mm diameter hole of the fused sample, and the electrical resistance was measured. As a result, it was 10 ⁇ .
- the present invention can be basically divided into four structures.
- a dielectric ceramic is formed by a sintered body (Fig. 17).
- the other is a structure in which a dielectric is formed by a film forming method, such as thermal spraying, CVD, PVD, sputtering, or another film forming method (Fig. 17). It has a structure in which a cooling mechanism is joined to a heating mechanism (Figs. 19, 20). FIGS. 17 to 20 illustrate these situations.
- Fig. 17 shows the sintered body of the dielectric ceramic of the electrostatic attraction mechanism
- Fig. 18 shows the dielectric ceramic of the electrostatic attraction mechanism formed by film formation
- Fig. 19 shows the structure of Fig. 17 with the cooling mechanism joined.
- FIG. 20 shows a structure in which a cooling mechanism is joined to the structure of FIG.
- the dielectric ceramic is a sintered body, it can be divided into two structures depending on how the electrodes are formed.
- One is a structure in which ceramic and electrodes are integrally sintered as shown in Fig. 21.
- the electrodes are wrapped in a ceramic.
- the other is a structure in which the sintered body is brazed one by one as shown in Fig. 22, and the brazed layer also serves as an electrode.
- the electrothermal alloy of the ceramic heater may be directly fused to one surface of the dielectric ceramic. That is, as shown in FIG. 23, the ceramic on one side of the heater may be replaced by one side of the dielectric ceramic.
- Example 8 Structure: Structure of FIG. 24
- Dielectric adsorption mechanism Uses aluminum nitride discs (650 x 0.2 mm thick)
- Heating mechanism Uses two ⁇ 50 x 1 t aluminum nitride plates.
- the electrothermal alloy uses a microstructured alloy of S i + T i S i 2.
- One side of two aluminum nitride plates (05 Ox 1 t) is printed with an Si-25% Ti alloy powder in an electric heating circuit pattern, and after pre-sintering, the two sheets are overlaid, and in vacuum, 1430 Melted and fused at ° C.
- the thickness of the electrothermal alloy film was 100 ⁇ D.
- the same Si—25% Ti alloy as the electrothermal alloy was used for joining the aluminum nitride plate of the dielectric adsorption mechanism and the heater. Bonding was performed at the same time when the heater was bonded.
- the bonding metal was used as the electrode (single pole).
- Heating starts at room temperature (20 ° C), and the heater is energized.
- the wafer surface is 700 in 60 seconds. C could be heated.
- the surface temperature of one surface of the silicon wafer could be maintained within the range of 700 ° C ⁇ 5 eC .
- the dielectric adsorption mechanism and ceramic capacitor were manufactured in the same manner as in Example 8.
- As the electrothermal alloy a Si—20% Zr alloy was used. They were joined in a vacuum 1430 e C. The thickness of the electrothermal alloy was 100 ⁇ m.
- the electrodes used the bonding metal layer as a single electrode.
- the aluminum nitride heater and cooling mechanism were directly brazed with silver solder containing Ti.
- a 50% W-50% aluminum nitride (volume%) composite sintered disk 50 X lmm) is interposed between the aluminum nitride heater and the tungsten cooling mechanism for buffering stress. Joined.
- Electrostatic attraction A DC voltage of 700 V was applied between the electrode and the silicon wafer to attract the two-inch silicon wafer to the surface of the dielectric ceramic.
- Heating Start heating from 0 ° C. The heater was energized, and the wafer surface could be heated to 100 ° C in 25 seconds.
- the surface temperature of the silicon wafer could be kept in the range of 50 "C ⁇ 1 ° C by using water cooling simultaneously with the heating of the heater.
- Example 10 Structure: Structure of FIG. 26
- Dielectric adsorption mechanism Uses an aluminum nitride disk (050 x 2 mm thick) in which a tungsten electrode film is simultaneously fired inside the ceramic.
- Aluminum nitride surface on the back (non-adsorption side) of the aluminum nitride disk with a built-in electrode film An electric heating circuit made of an electric heating alloy (31-15% 11 11 alloy) is printed on the surface, and aluminum nitride ( ⁇ 50X1t) is further superimposed on the printed surface, and the vacuum is applied to 1430.
- C was melted to fuse the aluminum nitride disk with the built-in electrode film and the aluminum nitride plate.
- the thickness of the electrothermal alloy J5 was approximately 100 microns.
- One side of an aluminum plate (050 x 25 mm thick) is machined with a spiral coolant circulation groove, and backed by an aluminum plate (05 O x 5 mm thick).
- a cooling jacket with a brazed (aluminum brazed) structure was used.
- a Mo plate (501 mm) was sandwiched between the aluminum nitride heater and the cooling mechanism for the purpose of buffering stress, and the aluminum nitride heater and Mo, Mo and the cooling mechanism were both soldered with indium solder.
- Electrostatic attraction A DC voltage of 700 V was applied between the electrode and the silicon wafer to attract the 2-inch silicon wafer to the surface of the dielectric ceramic. Heating
- the surface temperature of the silicon wafer could be kept within a range of 50 ° C ⁇ 1 ° C by using water heating and heating together with the heater.
- the electrostatic chuck of the present invention can rapidly raise and lower the temperature of a silicon wafer and can maintain a uniform temperature.
- the electric heating element of the present invention is an electric heating element having a composite structure in which a film of an electric heating material of silicide, Si or a mixed structure of silicide and Si is fused to ceramic Si. It is a material that improves the brittleness of electrothermal materials and the drawback of softening at high temperatures, and is also thinner, which improves the adhesion strength, peeling resistance, and oxidation resistance in air of heat-resistant coatings. Excellent, withstands rapid heating, high temperature heating, It has the advantages of excellent durability, simple structure and low cost, and is an industrially significant invention.
- the electrostatic chuck of the present invention is characterized in that the temperature of the semiconductor substrate surface can be raised and lowered in an extremely short temperature cycle, and can be expected to greatly contribute to improvement in productivity, quality improvement in plasma processing, film formation processing and the like. Things.
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Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980708902A KR100280634B1 (ko) | 1996-05-05 | 1997-05-06 | 전기 발열체 및 이를 이용한 정전 척 |
| US09/180,348 US6448538B1 (en) | 1996-05-05 | 1997-05-06 | Electric heating element |
| EP97918374A EP0899986B1 (en) | 1996-05-05 | 1997-05-06 | Electric heating element and electrostatic chuck using the same |
| DE69731740T DE69731740T2 (de) | 1996-05-05 | 1997-05-06 | Elektrisches heizelement und mit diesem versehehe spannnvorrichtung |
Applications Claiming Priority (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14640896 | 1996-05-05 | ||
| JP8/146408 | 1996-05-05 | ||
| JP8/152823 | 1996-05-09 | ||
| JP15282396 | 1996-05-09 | ||
| JP16357796 | 1996-05-20 | ||
| JP8/163577 | 1996-05-20 | ||
| JP20408896 | 1996-06-29 | ||
| JP8/204088 | 1996-06-29 | ||
| JP27983296 | 1996-09-12 | ||
| JP8/279832 | 1996-09-12 | ||
| JP9433097A JPH10256359A (ja) | 1997-03-08 | 1997-03-08 | 静電チャック |
| JP9/94330 | 1997-03-08 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US09/915,647 Continuation US6486447B2 (en) | 1996-05-05 | 2001-07-26 | Method of manufacturing an electric heating element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997042792A1 true WO1997042792A1 (en) | 1997-11-13 |
Family
ID=27551927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1997/001529 Ceased WO1997042792A1 (en) | 1996-05-05 | 1997-05-06 | Electric heating element and electrostatic chuck using the same |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US6448538B1 (ja) |
| EP (1) | EP0899986B1 (ja) |
| KR (1) | KR100280634B1 (ja) |
| DE (1) | DE69731740T2 (ja) |
| WO (1) | WO1997042792A1 (ja) |
Families Citing this family (57)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE301916T1 (de) * | 1999-11-19 | 2005-08-15 | Ibiden Co Ltd | Keramisches heizgerät |
| JP2002057207A (ja) * | 2000-01-20 | 2002-02-22 | Sumitomo Electric Ind Ltd | 半導体製造装置用ウェハ保持体およびその製造方法ならびに半導体製造装置 |
| US7081602B1 (en) * | 2000-02-01 | 2006-07-25 | Trebor International, Inc. | Fail-safe, resistive-film, immersion heater |
| US7011874B2 (en) * | 2000-02-08 | 2006-03-14 | Ibiden Co., Ltd. | Ceramic substrate for semiconductor production and inspection devices |
| JP2001244320A (ja) * | 2000-02-25 | 2001-09-07 | Ibiden Co Ltd | セラミック基板およびその製造方法 |
| DE10025588A1 (de) * | 2000-05-24 | 2001-11-29 | Mold Masters Ltd | Einrichtung zur Verarbeitung von geschmolzenem Material, Verfahren und Vorrichtung zur Herstellung derselben |
| ATE275760T1 (de) * | 2000-06-02 | 2004-09-15 | Ibiden Co Ltd | Heizplatteneinheit |
| US20030000938A1 (en) * | 2000-12-01 | 2003-01-02 | Yanling Zhou | Ceramic heater, and ceramic heater resistor paste |
| DE10112234C1 (de) * | 2001-03-06 | 2002-07-25 | Schott Glas | Keramik-Kochfeld |
| US20050211385A1 (en) | 2001-04-30 | 2005-09-29 | Lam Research Corporation, A Delaware Corporation | Method and apparatus for controlling spatial temperature distribution |
| JP3856293B2 (ja) * | 2001-10-17 | 2006-12-13 | 日本碍子株式会社 | 加熱装置 |
| DE10162276C5 (de) * | 2001-12-19 | 2019-03-14 | Watlow Electric Manufacturing Co. | Rohrförmiger Durchlauferhitzer und Heizplatte sowie Verfahren zu deren Herstellung |
| US7067775B2 (en) * | 2002-03-20 | 2006-06-27 | Micropyretics Heaters International, Inc. | Treatment for improving the stability of silicon carbide heating elements |
| US6960741B2 (en) * | 2002-08-26 | 2005-11-01 | Lexmark International, Inc. | Large area alumina ceramic heater |
| JP4026759B2 (ja) * | 2002-11-18 | 2007-12-26 | 日本碍子株式会社 | 加熱装置 |
| US7372001B2 (en) * | 2002-12-17 | 2008-05-13 | Nhk Spring Co., Ltd. | Ceramics heater |
| JP3829935B2 (ja) * | 2002-12-27 | 2006-10-04 | 信越化学工業株式会社 | 高耐電圧性部材 |
| KR100890493B1 (ko) * | 2003-04-18 | 2009-03-26 | 가부시키가이샤 히다치 고쿠사이 덴키 | 반도체 제조 장치 |
| US20040222210A1 (en) * | 2003-05-08 | 2004-11-11 | Hongy Lin | Multi-zone ceramic heating system and method of manufacture thereof |
| KR20050031785A (ko) * | 2003-09-30 | 2005-04-06 | 삼성전자주식회사 | 전기조리기 |
| DE602004011386T2 (de) * | 2003-11-20 | 2009-01-08 | Koninklijke Philips Electronics N.V. | Dünnschichtheizelement |
| US7196295B2 (en) * | 2003-11-21 | 2007-03-27 | Watlow Electric Manufacturing Company | Two-wire layered heater system |
| US7164104B2 (en) * | 2004-06-14 | 2007-01-16 | Watlow Electric Manufacturing Company | In-line heater for use in semiconductor wet chemical processing and method of manufacturing the same |
| US20060076343A1 (en) * | 2004-10-13 | 2006-04-13 | Cheng-Ping Lin | Film heating element having automatic temperature control function |
| KR20070055617A (ko) * | 2004-12-20 | 2007-05-30 | 니혼도꾸슈도교 가부시키가이샤 | 세라믹 히터, 열 교환 유닛 및 미온수 세척 변기 의자 |
| CN2933108Y (zh) * | 2005-11-25 | 2007-08-15 | 壁基国际有限公司 | 电热卷发器 |
| CN100521835C (zh) * | 2005-12-29 | 2009-07-29 | 梁敏玲 | 电阻膜加热装置的制造方法及所形成的电阻膜加热装置 |
| US8226769B2 (en) * | 2006-04-27 | 2012-07-24 | Applied Materials, Inc. | Substrate support with electrostatic chuck having dual temperature zones |
| US20080142755A1 (en) * | 2006-12-13 | 2008-06-19 | General Electric Company | Heater apparatus and associated method |
| US20080295795A1 (en) * | 2007-05-29 | 2008-12-04 | Ted Hollinger | Laminated Internal Combustion Engine and Fabrication Technique |
| DE102008032509A1 (de) * | 2008-07-10 | 2010-01-14 | Epcos Ag | Heizungsvorrichtung und Verfahren zur Herstellung der Heizungsvorrichtung |
| KR100995250B1 (ko) * | 2008-09-09 | 2010-11-18 | 주식회사 코미코 | 열 응력 감소를 위한 버퍼층을 포함하는 정전 척 |
| CA130443S (en) * | 2008-10-21 | 2010-05-17 | Feed Me Bottles Ltd | Bottle |
| JP5416570B2 (ja) * | 2009-12-15 | 2014-02-12 | 住友電気工業株式会社 | 加熱冷却デバイスおよびそれを搭載した装置 |
| US8395093B1 (en) * | 2010-04-06 | 2013-03-12 | Cornerstone Research Group, Inc. | Conductive elastomeric heater with expandable core |
| US9224626B2 (en) * | 2012-07-03 | 2015-12-29 | Watlow Electric Manufacturing Company | Composite substrate for layered heaters |
| US9673077B2 (en) | 2012-07-03 | 2017-06-06 | Watlow Electric Manufacturing Company | Pedestal construction with low coefficient of thermal expansion top |
| CN102946652A (zh) * | 2012-10-31 | 2013-02-27 | 宁波市万泓电器科技有限公司 | 带发热膜的加热管及其制造工艺 |
| US10966287B2 (en) * | 2013-04-09 | 2021-03-30 | Novair, Inc. | High-temperature nanocomposite emitting film, method for fabricating the same and its application |
| US20140356985A1 (en) | 2013-06-03 | 2014-12-04 | Lam Research Corporation | Temperature controlled substrate support assembly |
| DE102013014030B4 (de) | 2013-08-26 | 2023-06-29 | QSIL Ingenieurkeramik GmbH | Keramisches Heizelement und Umformwerkzeug sowie Verfahren zur Herstellung eines keramischen Heizelements |
| JP6329741B2 (ja) * | 2013-09-06 | 2018-05-23 | デクセリアルズ株式会社 | 保護回路 |
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| US20230328846A1 (en) * | 2020-08-18 | 2023-10-12 | Wuhu Aldoc Tech Co., Ltd. | Metal heating body, metal heating device, and metal heating body manufacturing method |
| KR20220101566A (ko) * | 2021-01-11 | 2022-07-19 | 에이에스엠 아이피 홀딩 비.브이. | 정전기 척 |
| WO2022173017A1 (ja) * | 2021-02-12 | 2022-08-18 | 京セラ株式会社 | ヒータ |
| CN118923206A (zh) * | 2022-03-31 | 2024-11-08 | 巴川集团股份有限公司 | 片状加热器 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62264588A (ja) * | 1986-05-12 | 1987-11-17 | 株式会社東芝 | 赤外線ヒ−タ |
| JPH02215077A (ja) * | 1988-12-24 | 1990-08-28 | Robert Bosch Gmbh | 高温加熱素子、その製造方法およびセラミツク加熱装置の製造方法 |
| JPH0870036A (ja) * | 1994-08-29 | 1996-03-12 | Souzou Kagaku:Kk | 静電チャック |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1021691A (en) * | 1961-10-19 | 1966-03-09 | Kanthal Ab | Improvements in heat-resistant and oxidation-proof materials containing molybdenum disilicide |
| US4071880A (en) * | 1974-06-10 | 1978-01-31 | N L Industries, Inc. | Ceramic bodies with end termination electrodes |
| JPS55126989A (en) * | 1979-03-24 | 1980-10-01 | Kyoto Ceramic | Ceramic heater |
| JPS5767297A (en) * | 1980-10-15 | 1982-04-23 | Kyoto Ceramic | Ceramic heater |
| US4486651A (en) * | 1982-01-27 | 1984-12-04 | Nippon Soken, Inc. | Ceramic heater |
| JPS599887A (ja) * | 1982-07-07 | 1984-01-19 | 日本特殊陶業株式会社 | セラミツク発熱体 |
| US4714570A (en) * | 1984-07-17 | 1987-12-22 | Matsushita Electric Industrial Co., Ltd. | Conductor paste and method of manufacturing a multilayered ceramic body using the paste |
| US4882203A (en) * | 1988-11-04 | 1989-11-21 | Cvd Systems & Services | Heating element |
| US5151871A (en) * | 1989-06-16 | 1992-09-29 | Tokyo Electron Limited | Method for heat-processing semiconductor device and apparatus for the same |
| US5280156A (en) * | 1990-12-25 | 1994-01-18 | Ngk Insulators, Ltd. | Wafer heating apparatus and with ceramic substrate and dielectric layer having electrostatic chucking means |
| JP2804393B2 (ja) * | 1991-07-31 | 1998-09-24 | 京セラ株式会社 | セラミックヒータ |
| KR100290748B1 (ko) * | 1993-01-29 | 2001-06-01 | 히가시 데쓰로 | 플라즈마 처리장치 |
| JP2828575B2 (ja) * | 1993-11-12 | 1998-11-25 | 京セラ株式会社 | 窒化珪素質セラミックヒータ |
| JP2813148B2 (ja) * | 1994-03-02 | 1998-10-22 | 日本碍子株式会社 | セラミックス製品 |
| TW444922U (en) * | 1994-09-29 | 2001-07-01 | Tokyo Electron Ltd | Heating device and the processing device using the same |
| JP3138393B2 (ja) * | 1994-09-30 | 2001-02-26 | シャープ株式会社 | 薄膜導電層の形成方法 |
| JPH09213781A (ja) * | 1996-02-01 | 1997-08-15 | Tokyo Electron Ltd | 載置台構造及びそれを用いた処理装置 |
| US5787578A (en) * | 1996-07-09 | 1998-08-04 | International Business Machines Corporation | Method of selectively depositing a metallic layer on a ceramic substrate |
-
1997
- 1997-05-06 KR KR1019980708902A patent/KR100280634B1/ko not_active Expired - Fee Related
- 1997-05-06 EP EP97918374A patent/EP0899986B1/en not_active Expired - Lifetime
- 1997-05-06 DE DE69731740T patent/DE69731740T2/de not_active Expired - Fee Related
- 1997-05-06 US US09/180,348 patent/US6448538B1/en not_active Expired - Fee Related
- 1997-05-06 WO PCT/JP1997/001529 patent/WO1997042792A1/ja not_active Ceased
-
2001
- 2001-07-26 US US09/915,647 patent/US6486447B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62264588A (ja) * | 1986-05-12 | 1987-11-17 | 株式会社東芝 | 赤外線ヒ−タ |
| JPH02215077A (ja) * | 1988-12-24 | 1990-08-28 | Robert Bosch Gmbh | 高温加熱素子、その製造方法およびセラミツク加熱装置の製造方法 |
| JPH0870036A (ja) * | 1994-08-29 | 1996-03-12 | Souzou Kagaku:Kk | 静電チャック |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP0899986A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US6486447B2 (en) | 2002-11-26 |
| EP0899986A1 (en) | 1999-03-03 |
| DE69731740T2 (de) | 2005-12-15 |
| US6448538B1 (en) | 2002-09-10 |
| KR20000010776A (ko) | 2000-02-25 |
| US20020027130A1 (en) | 2002-03-07 |
| DE69731740D1 (de) | 2004-12-30 |
| EP0899986B1 (en) | 2004-11-24 |
| EP0899986A4 (en) | 2000-04-12 |
| KR100280634B1 (ko) | 2001-02-01 |
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