WO2001084888A1 - Ceramic heater and method of controlling temperature of the ceramic heater - Google Patents
Ceramic heater and method of controlling temperature of the ceramic heater Download PDFInfo
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- WO2001084888A1 WO2001084888A1 PCT/JP2001/003778 JP0103778W WO0184888A1 WO 2001084888 A1 WO2001084888 A1 WO 2001084888A1 JP 0103778 W JP0103778 W JP 0103778W WO 0184888 A1 WO0184888 A1 WO 0184888A1
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- WO
- WIPO (PCT)
- Prior art keywords
- temperature
- resistance heating
- heating element
- substrate
- ceramic
- Prior art date
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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
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
- H05B1/0233—Industrial applications for semiconductors manufacturing
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67248—Temperature monitoring
-
- 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
Definitions
- the present invention relates to a ceramic heater mainly used in the semiconductor industry, and more particularly, to a ceramic heater excellent in uniform control of a temperature distribution on a substrate heating surface and a temperature control method thereof.
- a typical semiconductor chip is manufactured by slicing a silicon single crystal into a predetermined thickness to produce a silicon wafer, and then forming a plurality of integrated circuits and the like on the silicon wafer.
- the silicon wafer placed on the electrostatic chuck is subjected to various processes such as etching and CVD to form conductive circuits and apply resist resin. After that, heating and drying are performed.
- a metal heater with a resistance heating element arranged on the back surface of an aluminum metal plate is often used.
- the substrate is made of metal
- the substrate must be thick (about 15 mm). This is because, in a thin metal substrate, warping or distortion occurs due to thermal expansion due to heating, and the silicon wafer placed on the metal substrate is damaged or tilted. On the other hand, when the thickness of the metal substrate is increased, the heat becomes heavier and bulkier.
- Japanese Patent Publication No. 8-8247 discloses a technique for controlling the temperature while using a nitride ceramic as a substrate and measuring the temperature near the resistance heating element. I have. However, when attempting to heat a silicon wafer using the disclosed technology, there was a problem that the silicon wafer was damaged by thermal shock caused by a temperature difference between the substrate surfaces.
- the inventors have conducted intensive research on the cause of silicon wafer damage.
- the silicon wafer (hereinafter simply referred to as “wafer”) is damaged because the temperature of the outer peripheral portion of the substrate is reduced by heat radiation, and the entire resistance heating element is made uniform. It was found that if the temperature was controlled to a certain level, the temperature distribution would be uneven and the wafer would be damaged.
- Japanese Patent Application Laid-Open No. Hei 6-252505 describes a control technique for controlling the temperature near the center of the substrate to be higher than the temperature at the outer periphery of the substrate.
- Japanese Patent Application Laid-Open No. 216,283 proposes a technique of dividing a resistance heating element circuit and controlling the temperature of the resistance heating element at an outer peripheral portion to be high.
- these known techniques are methods in which a temperature schedule is determined and controlled in advance.In actual wafer heating, there is a disturbance such as sudden heating of a low-temperature wafer, and the temperature schedule is determined in advance. Such control cannot cope with unexpected temperature changes.
- An object of the present invention is to propose a ceramic heater having excellent uniformity of temperature distribution on a substrate heating surface and a method of controlling the temperature thereof. Disclosure of the invention
- the resistance heating element is divided into two or more circuits on the outer peripheral side and the inner peripheral side of the substrate, and different electric power is supplied to each of the circuits based on the result of the temperature measurement by the temperature measuring means.
- To control the temperature. -By raising the temperature so that it is equal to or higher than the temperature on the inner peripheral side, the temperature distribution in the radial direction of the substrate heating surface is made uniform, and the temperature difference on the heating surface of the silicon wafer It has been found that reducing the size can prevent the wafer from being damaged, and that even if an unexpected temperature change occurs, uniform temperature control can be achieved.
- the present invention has been completed, which has the following five contents.
- the present invention provides a ceramic substrate having a resistance heating element provided on the surface or inside of a ceramic substrate, a temperature measuring means for measuring the temperature of the ceramic substrate or the object to be heated, and supplying power to the resistance heating element.
- a ceramic heater comprising: a control unit that performs the operation; a storage unit that stores the temperature data measured by the temperature measuring unit; and a calculation unit that calculates the power to be supplied to the resistance heating element from the temperature data.
- the resistance heating element is composed of two or more circuits that can independently control the temperature, and the temperature of the circuit located at the outer periphery of these circuits is located at the inner periphery. It is characterized in that the temperature is controlled to be equal to or higher than the temperature of the circuit.
- the control unit includes a power supply for supplying power to the resistance heating element, and a control unit for controlling the power supply.
- the temperature measuring means uses a temperature measuring element such as a thermocouple.
- the temperature measuring means uses a temperature measuring element such as thermopure.
- the present invention provides a ceramic substrate having a resistance heating element provided on the surface or inside of a ceramic substrate, a temperature measuring means for measuring the temperature of the ceramic substrate or the object to be heated, and supplying electric power to the resistance heating element.
- a ceramic heater comprising: a control unit for supplying; a storage unit for storing temperature data measured by the temperature measuring means; and a calculation unit for calculating power to be supplied to the resistance heating element from the temperature data.
- the resistance heating element is composed of two or more circuits that can independently control the temperature. The temperature is controlled so that it is the same as the temperature of the circuit located at or higher than the temperature of the inner peripheral part.
- the control unit includes a power supply for supplying power to the resistance heating element, and a control unit for controlling the power supply. Based on the temperature data measured by the temperature measuring unit, the control unit includes an internal circuit and an internal circuit. It is preferable to control the temperature by supplying different electric power to the peripheral circuit.
- FIG. 1a is a block diagram schematically showing an example of the ceramic heater (heating element interior) of the present invention
- FIG. 1b is a partially enlarged sectional view of a ceramic substrate.
- FIG. 2 is a plan view schematically showing an example of a resistance heating element portion of the ceramic heater of the present invention.
- FIG. 3 is a graph showing a change in temperature distribution at various points in the radial direction of the ceramic substrate.
- FIG. 4 is a block diagram schematically showing another example of the ceramic heater (heater exterior) of the present invention.
- FIG. 5 is a graph showing a temperature profile of a ceramic heater according to Example 4.
- FIG. 6 is a graph showing a power (current) profile of the ceramic ceramic according to the fourth embodiment.
- the substrate is a ceramic substrate, and the resistance heating element is formed inside or on the surface of the substrate, particularly on the surface opposite to the surface on the wafer heating side (hereinafter referred to as the substrate heating surface).
- the substrate heating surface has been.
- a temperature measuring element for measuring the temperature of the substrate; a control unit for supplying power to the resistance heating element; a storage unit for storing temperature data measured by the temperature measuring element; A calculation unit for calculating the power required for the resistance heating element from the temperature data.
- the characteristic configuration of this ceramic heater is that the resistance heating element is composed of two or more circuits that can independently control the temperature, and the temperature of the circuit on the outer peripheral side of these circuits is The temperature is controlled so as to be equal to or higher than the temperature of the circuit located on the part side, and as a result, the heating surface of the ceramic substrate has a uniform temperature distribution as a whole.
- the ceramic The required power to be applied to each resistance heating element can be accurately controlled based on the temperature measurement results at various locations on the backing board.
- the temperature distribution on the substrate heating surface can be controlled uniformly.
- the present invention since the amount of power input is increased toward the outer peripheral portion of the ceramic substrate where the temperature is reduced, the above-described problem of the prior art (lower temperature at the outer peripheral portion) is avoided. As a result, the temperature of the substrate heating surface can be constantly maintained, and the prevention of breakage of the wafer can be achieved.
- uniform heating of the wafer can be realized, so that the uniform drying of the wafer surface registry and the surface treatment such as CVD and spattering can be performed uniformly.
- FIG. 1a is a partial cross-sectional view showing an example of a ceramic heater 10 having a resistance heating element built-in type
- FIG. 1b is a partially enlarged cross-sectional view showing a temperature measuring element embedded portion
- FIG. 2 is a plan view of a ceramic substrate showing the arrangement of the internal resistance heating elements of the ceramic capacitor 10 shown in FIG. La.
- a ceramic substrate 11 is formed in a disk shape as shown in FIG.
- two types of resistance heating elements 12 (12x, 12y), each of which can independently control the temperature, are embedded.
- the pattern of the resistance heating element is formed as a concentric pattern as shown in the figure to control the temperature so that the entire temperature of the substrate heating surface 11a becomes uniform.
- these resistance heating elements 12 are connected as a set of double concentric circles approaching each other so as to form a single line, and terminal pins 13 serving as input / output terminals are provided at both ends with through holes. Connected via 18.
- a socket 20 is attached to the terminal pin 13, and the socket 20 is also connected to a control unit 23 having a power supply.
- a through hole 15 is formed in the vicinity of the center of the ceramic substrate 11 to allow the lifter pin 16 to pass therethrough.
- a plurality of bottomed holes 14a to 14i for inserting pairs 17 are formed.
- the ceramic substrate 11 supports the wafer 19 on the substrate heating surface 11a.
- the lifter pin 16 for the lifter is inserted, and the lifter pin 19 is moved up and down to carry in and carry out the lifter 19. While moving 16 up and down, the wafer 19 is transferred to a transfer machine (not shown) or conversely received from the transfer machine.
- the wafer 19 supported on the substrate heating surface 11a is the lifter described above. Heating can be performed while supporting the substrate at a predetermined distance from the substrate heating surface 1 la via a pin 16 or a gap pin (not shown), but the separation distance at that time is 50 to 500 m is desirable.
- thermocouple 17 is embedded and fixed.
- the thermocouple 17 is connected to the storage unit 21 so that the temperature of each thermocouple 17 can be measured at regular intervals and the data can be stored.
- the storage unit 21 is connected to the control unit 23 and the calculation unit 22 and calculates a voltage value and the like controlled by the calculation unit 22 based on the data stored in the storage unit 21. On the basis of this, a predetermined voltage is applied from the control unit 23 to each of the resistance heating elements 12 so that the temperature of the substrate heating surface 11a can be made uniform.
- the temperature of the ceramic substrate 11 itself starts to rise, but the surface temperature of the outer surface of the substrate becomes slightly low. It is normal that there is.
- the temperature of the heating surface 11 of the ceramic substrate 11 is measured by a thermocouple 17, and the temperature measurement data is stored in the storage unit 21.
- the temperature measurement data is sent to a calculation unit 22.
- a difference in temperature at each measurement point or a difference ⁇ ⁇ from a set temperature is calculated. Calculate the required data for temperature equalization of 1a. For example, there is a temperature difference ⁇ ⁇ ⁇ between the upper heating surface of the inner peripheral resistance heating element 1 2 X and the upper heating surface of the outer peripheral resistance heating element 12 y.
- the upper heating surface of the heating element 1 2 X is lower, calculate the power consumption to make ⁇ 0 0 and calculate this 23, and the electric power based on this is supplied to the inner peripheral resistance heating element 12x or the outer peripheral resistance heating element 12y to raise or lower the temperature.
- the simplest method is to calculate the power required to raise the temperature from the specific heat of the ceramic substrate 11 and the weight of the heating area, and also take into account the correction coefficient due to the resistance heating element pattern. May be.
- a temperature rise test may be performed on a specific resistance heating element pattern in advance, and a function of the temperature measurement position, input power, and temperature may be obtained in advance, and the input power may be calculated from this function.
- the applied voltage and time corresponding to the power calculated by the calculation unit 22 are transmitted to the control unit 23, and the control unit 23 sends the resistance heating elements 12x and 12y based on the values. Power will be turned on.
- control unit is provided with the arithmetic unit 22, even if an unexpected temperature change occurs in the ceramic substrate 11, for example, electric power for uniformizing the temperature is provided. Calculation can be performed, and practical temperature control can be realized.
- Figure 3 shows the heating temperature of the ceramic substrate 11 when the temperature of the ceramic substrate was raised to 140 ° C and then the wafer at 25 ° C was brought closer to a distance of 100 ° m.
- 5 is a graph showing a temperature change of la. Measure the lowered temperature and calculate the amount of power to be applied to which resistance heating element (12 x, 12 y) from the difference between this temperature and the set temperature and the temperature difference between each measurement point. I do. Therefore, according to the present invention, it is possible to settle to the original set temperature while always converging the temperature difference of the substrate heating surface 11a regardless of the temperature change. Also in the case of FIG. 3, the temperature of the outer peripheral side resistance heating element 11 y is higher.
- the thickness of the ceramic substrate 11 is more than 1.5 mm and not more than 25 mm, particularly preferably 0.5 to 5 mm. If the thickness is less than 0.5 mm, the strength will be reduced and it will be easily damaged. On the other hand, if the thickness is more than 5 mm, heat will not be easily transmitted, and the efficiency of heating and cooling will be reduced.
- the ceramic constituting such a ceramic substrate 11 is preferably a nitride ceramic or a carbide ceramic. Nitride ceramics and carbide ceramics have a lower coefficient of thermal expansion than metals, and have significantly higher mechanical strength than metals. Therefore, even if the thickness of the heat sink 11 is reduced, it does not warp or warp due to heating.
- the ceramic substrate 11 can be made thinner and lighter. Since the substrate 11 has a high thermal conductivity and is thin, its surface temperature quickly follows the temperature change of the resistance heating element 12. That is, by changing the voltage and the current value, the resistance of the resistance heating element is changed.
- the surface temperature of the ceramic substrate can be controlled accurately and quickly.
- thermocouple As a means for measuring the temperature of the ceramic substrate, a thermocouple may be used in addition to the thermocouple 17 described above.
- the thermocouple 17 performs point temperature control, but the thermopure is preferable because surface temperature control can be realized.
- the temperature measurement by the side temperature means may measure not only the temperature of the ceramic substrate 1 but also the temperature of the wafer to be heated. Direct measurement of the temperature of the wafer 19 allows for more accurate control.
- nitride ceramic examples include aluminum nitride, silicon nitride, boron nitride, and titanium nitride. These may be used alone or in combination of two or more.
- carbide ceramic examples include silicon carbide, zirconium pentacarbide, titanium carbide, tantalum carbide, and tungsten carbide. These may be used alone or in combination of two or more.
- aluminum nitride is most preferred. This is because the thermal conductivity is the highest at 18 O WZmK, which is excellent in temperature followability, but tends to cause uneven temperature distribution, and it is effective to adopt a structure for forming a temperature measuring element as in the present invention. .
- the ceramic substrate 11 has a bottomed hole 14 a to 14 on the surface opposite to the substrate heating surface 11 a on which the wafer 19 is to be mounted, facing the substrate heating surface 11 a.
- bottomed hole 14 Also called “bottomed hole 14”). It is desirable that the bottom of the bottomed hole 14 is formed relatively closer to the substrate heating surface 11a than the position of the resistance heating element 12 (see FIG. 1a).
- the distance L between the bottom of the bottomed hole 14 and the substrate heating surface 11a is 50.1 mm to 2Z3 of the thickness of the ceramic substrate, preferably about 1Z2 (lb. See figure).
- L is less than 0.1 mm, heat will be dissipated and unevenness will occur on substrate heating surface 11a. If one temperature distribution is easily formed, and if the thickness of the substrate exceeds 23, preferably more than 1/2, the temperature of the resistance heating element 11 becomes more susceptible to temperature control. An uneven temperature distribution is formed on the substrate heating surface 11a.
- the diameter of the bottomed hole 14 is 0.3 mn! Desirably, it is about 5 mm. The reason for this is that if it is too large, the heat dissipation increases, and if it is too small, the workability deteriorates and the distance from the substrate heating surface 11a cannot be equalized.
- the bottomed holes 14a to 14i are arranged symmetrically with respect to the center of the ceramic substrate 11 so as to form a cross, as shown in FIG. Better. This is because the temperature of the entire substrate heating surface can be measured.
- the temperature measurement location is closer to the substrate heating surface 1 1a than the resistance heating element 1 2, and it is possible to more accurately measure the temperature of the substrate heating surface 1 1a that heats the wafer 19 Becomes Then, the measurement result of the temperature is stored in the storage unit 21, and based on the temperature data stored in the storage unit 21, the voltage applied to the resistance heating element 12 is calculated by the calculation unit 22, Based on this calculation result, a control voltage is applied from the control unit 23 to the heating elements 12 so that the entire substrate heating surface 1 la can be uniformly heated, and thus the entire wafer is also uniformly heated. You.
- thermocouple examples include a thermocouple, a platinum resistance temperature detector, and a thermistor.
- thermocouple examples include K-type, R-type, B-type, S-type, E-type, J-type, and T-type thermocouples as described in JIS-C-162 (1980). Of these, a K-type thermocouple is preferable. It is desirable that the size of the junction of the thermocouple is the same as or larger than the diameter of the strand, and is 0.5 mm or less. This is because if the junction is large, the heat capacity increases and the response decreases. It is difficult to make the diameter smaller than the diameter of the strand.
- the temperature measuring element may be glued to the bottom of the bottomed hole 14 using gold brazing or silver brazing, etc.5.After being inserted into the bottomed hole 14, an inorganic adhesive, heat-resistant resin And both may be used together.
- thermosetting resin particularly an epoxy resin, Mid resin, bismaleid-triazine resin, and the like. These resins may be used alone or in combination of two or more.
- the above-mentioned brazing filler metal is 37 ⁇ 80.5wt% Au-63-19.5wt% Cu alloy,
- At least one selected from 7.5 wt% Ni alloy is desirable. These have a melting temperature of 900 ° C or higher and are difficult to melt even in a high temperature region.
- the silver solder for example, an Ag—Cu-based solder can be used.
- the resistance heating element 12 is preferably divided into at least two or more circuits as shown in FIG. 2, and is divided into 2 to 30, preferably 2 to 10 circuits. Is more desirable. By dividing the circuit of the resistance heating element 12 into a plurality of parts, the power supplied to each circuit can be individually controlled, and the heating value of each resistance heating element 12 can be finely controlled. The temperature distribution of 1a can be adjusted accurately.
- the operating temperature of ceramic heater is preferably 100 ° C to 800 ° C. 5
- the diameter of the ceramic heater should be 19 Omm or more.
- Example 1 Manufacture of a ceramic heater made of aluminum nitride (see Fig. 4)
- composition consisting of 100 parts by weight of aluminum nitride powder (average particle size: 1. l jum), 4 parts by weight of yttria 0 (average particle size: 0.4 zm), 12 parts by weight of acrylic binder and alcohol was spray-dried to produce a granular powder.
- Conductive paste was printed on the ceramic substrate 11 obtained in (3) by screen printing.
- the printing pattern was a concentric pattern as shown in FIG.
- the conductive paste used was Solvent PS 603D manufactured by Tokuka Chemical Laboratory, which is used to form through holes in printed wiring boards.
- This conductor paste is a silver-lead paste, and 100 parts by weight of silver is composed of lead oxide (5 wt%), zinc oxide (55 wt%), silica (10 wt%), boron oxide (25 wt%) and alumina (5 wt%). wt%) in a content of 7.5 parts by weight.
- the silver particles had an average particle size of 4.5 ⁇ m and were scaly.
- the ceramic substrate 11 on which the conductor paste was printed was heated and fired at 780 ° C. to sinter the silver and lead in the conductor paste and to sinter them on the substrate surface to form the resistance heating element 12.
- the silver-lead resistance heating element 12 had a thickness of 5 ⁇ m, a width of 2.4 mm, and a sheet resistivity of 7.7 ⁇ / port.
- electroless nickel plating consisting of an aqueous solution with the concentration of nickel sulfate 80 g / l, sodium hypophosphite 24 g / l, sodium acetate 12 g / l, boric acid 8 g / l, and ammonium chloride 6
- the ceramic substrate 11 prepared in (5) above was immersed in the bath, and a 1 / m-thick metal coating layer (nickel layer) was deposited on the surface of the silver-lead resistance heating element 12.
- a silver-lead solder paste (made by Tanaka Kikinzoku) was printed by screen printing on the area where the terminals for securing the connection to the power supply were to be attached, forming a solder layer.
- terminal pins 13 made of Kovar were placed on the solder layer, heated at 420 ° C. and flowed, and the terminal pins 13 were attached to the surface of the resistance heating element 12.
- thermocouple 17 for temperature control was inserted into the bottomed hole 14, and a ceramic adhesive (Alon ceramic manufactured by Toagosei Co., Ltd.) was embedded and fixed to obtain a ceramic heater 10.
- Example 2 Temperature control of ceramic heater (1)
- a temperature controller (Omron E5ZE) equipped with a control unit having a power supply, a storage unit, and a calculation unit was prepared, and the ceramic heater 10 manufactured in Example 1 (see Fig. 4)
- the wiring from the control unit 23 was connected via the terminal pin 13, the wiring from the thermocouple 17 was connected to the storage unit 21, and the silicon wafer was placed on the ceramic heater 150.
- the bottomed holes 14a to l4c of the ceramic ceramics 10 are the bottomed holes 14a to 1c of the ceramic heater 10 shown in FIG. It is formed at the same position as 4c. Further, the resistance heating elements 12a to 12c are also formed at the same positions as the resistance heating elements 12a to 12c in the ceramic capacitor 10 shown in FIG.
- Fig. 5 shows the measurement results.
- Fig. 6 shows the profiles of the power (indicated by the current value) applied to the resistance heating elements 12a, 12b, and 12c.
- the vertical axis indicates the degree of each component of the ceramic 5 heater, and the horizontal axis indicates the elapsed time.
- the vertical axis indicates the current value, and the horizontal axis indicates the current value. Takes time.
- the temperature of the resistance heating element 12 y on the outer peripheral side changes higher than that of the resistance heating element 12 X on the inner peripheral side after the current flows through the ceramic heater 10.
- the temperature of the ceramic wafer was uniform in a short time, and as a result, the silicon wafer 19 mounted on the ceramic heater 10 did not break during the heating process, and became uniform. Heated.
- the temperature of the ceramic heater 10 was raised to 140 ° C.
- - Figure 3 shows the temperature change of the wafer heating surface when the wafer 19 with the temperature sensor of 25 ° C is held on the wafer heating surface at a distance of 100 ⁇ m.
- the measured temperature is measured, the difference from the set temperature is calculated, the amount of electric power required for each heating element circuit is calculated, and the resistance heating element on the outer peripheral side 14 y It is possible to raise the temperature at a higher temperature and settle to the set temperature while converging the temperature difference in the substrate heating surface. Become. For this reason, even if there is an unsteady temperature change, it can be quickly returned to the original temperature.
- the conventional technology since there is no arithmetic unit, the temperature can be raised only by a preset temperature profile, and when such an unsteady temperature change occurs, the temperature control is performed. Not done.
- the temperature of the heating surface of the silicon wafer can be always made uniform by making the temperature higher in the outer peripheral side resistance heating element or by making it the same as the inside. .
- the ceramic heater of the present invention is used in an apparatus for manufacturing a semiconductor or inspecting a semiconductor.
- an electrostatic chuck for example, an electrostatic chuck, a wafer prober, a susceptor, and the like can be given.
- an electrostatic chuck in addition to the resistance heating element, an electrostatic electrode,
- the ceramic substrate for a semiconductor device of the present invention is preferably used at 100 ° C. or higher, more preferably at 200 ° C. or higher.
- the upper limit temperature is 800 ° C.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Resistance Heating (AREA)
- Control Of Resistance Heating (AREA)
- Surface Heating Bodies (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP01926101A EP1204299A1 (en) | 2000-04-29 | 2001-05-01 | Ceramic heater and method of controlling temperature of the ceramic heater |
Applications Claiming Priority (2)
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JP2000169735 | 2000-04-29 | ||
JP2000-169735 | 2000-04-29 |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/926,839 A-371-Of-International US20020134775A1 (en) | 2000-04-29 | 2001-05-01 | Ceramic heater and method of controlling temperature of the ceramic heater |
US10/265,413 Continuation US20030034341A1 (en) | 2000-04-29 | 2002-10-07 | Ceramic heater and process for temperature control thereof |
US10/648,514 Continuation US20040035848A1 (en) | 2000-04-29 | 2003-08-27 | Ceramic heater and process for temperature control thereof |
Publications (1)
Publication Number | Publication Date |
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WO2001084888A1 true WO2001084888A1 (en) | 2001-11-08 |
Family
ID=18672550
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2001/003778 WO2001084888A1 (en) | 2000-04-29 | 2001-05-01 | Ceramic heater and method of controlling temperature of the ceramic heater |
Country Status (3)
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US (3) | US20020134775A1 (ja) |
EP (1) | EP1204299A1 (ja) |
WO (1) | WO2001084888A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2017081951A1 (ja) * | 2015-11-12 | 2017-05-18 | 京セラ株式会社 | ヒータ |
JP2018060833A (ja) * | 2016-09-30 | 2018-04-12 | 新光電気工業株式会社 | 静電チャック、基板固定装置 |
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EP1249433A4 (en) * | 1999-09-06 | 2005-01-05 | Ibiden Co Ltd | BRIQUETTE AND CERAMIC SINTERED CARBON ALUMINUM NITRIDE SUBSTRATE FOR SEMICONDUCTOR MANUFACTURING OR VERIFICATION EQUIPMENT |
WO2001062686A1 (fr) * | 2000-02-24 | 2001-08-30 | Ibiden Co., Ltd. | Piece frittee en nitrure d'aluminium, substrat en ceramique, corps chauffant en ceramique et mandrin electrostatique |
JP2001247382A (ja) * | 2000-03-06 | 2001-09-11 | Ibiden Co Ltd | セラミック基板 |
EP1233651A1 (en) * | 2000-04-07 | 2002-08-21 | Ibiden Co., Ltd. | Ceramic heater |
WO2001084888A1 (en) * | 2000-04-29 | 2001-11-08 | Ibiden Co., Ltd. | Ceramic heater and method of controlling temperature of the ceramic heater |
JP3516392B2 (ja) * | 2000-06-16 | 2004-04-05 | イビデン株式会社 | 半導体製造・検査装置用ホットプレート |
WO2002003435A1 (fr) * | 2000-07-04 | 2002-01-10 | Ibiden Co., Ltd. | Plaque chaude destinee a la fabrication et aux essais de semiconducteurs |
DE10110792B4 (de) * | 2001-03-06 | 2004-09-23 | Schott Glas | Keramisches Kochsystem mit Glaskeramikplatte,Isolationsschicht und Heizelementen |
WO2002084717A1 (fr) * | 2001-04-11 | 2002-10-24 | Ibiden Co., Ltd. | Dispositif ceramique chauffant pour installation de fabrication/inspection de semi-conducteurs |
JP2004200619A (ja) * | 2002-12-20 | 2004-07-15 | Kyocera Corp | ウエハ支持部材 |
US20040222210A1 (en) * | 2003-05-08 | 2004-11-11 | Hongy Lin | Multi-zone ceramic heating system and method of manufacture thereof |
US20060088692A1 (en) * | 2004-10-22 | 2006-04-27 | Ibiden Co., Ltd. | Ceramic plate for a semiconductor producing/examining device |
US7666471B2 (en) * | 2006-03-22 | 2010-02-23 | Mark Wojtaszek | Polyimide substrate and method of manufacturing printed wiring board using the same |
US20070251938A1 (en) * | 2006-04-26 | 2007-11-01 | Watlow Electric Manufacturing Company | Ceramic heater and method of securing a thermocouple thereto |
US20080109085A1 (en) | 2006-11-03 | 2008-05-08 | Howmedica Osteonics Corp. | Method and apparatus for hip femoral resurfacing tooling |
JP6219227B2 (ja) * | 2014-05-12 | 2017-10-25 | 東京エレクトロン株式会社 | ヒータ給電機構及びステージの温度制御方法 |
US10582570B2 (en) * | 2016-01-22 | 2020-03-03 | Applied Materials, Inc. | Sensor system for multi-zone electrostatic chuck |
WO2020163173A1 (en) | 2019-02-04 | 2020-08-13 | Applied Materials, Inc. | Temperature offset and zone control tuning |
JP7539236B2 (ja) * | 2020-02-21 | 2024-08-23 | 東京エレクトロン株式会社 | 基板処理装置 |
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WO2001084888A1 (en) * | 2000-04-29 | 2001-11-08 | Ibiden Co., Ltd. | Ceramic heater and method of controlling temperature of the ceramic heater |
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2001
- 2001-05-01 WO PCT/JP2001/003778 patent/WO2001084888A1/ja not_active Application Discontinuation
- 2001-05-01 US US09/926,839 patent/US20020134775A1/en not_active Abandoned
- 2001-05-01 EP EP01926101A patent/EP1204299A1/en not_active Withdrawn
-
2002
- 2002-10-07 US US10/265,413 patent/US20030034341A1/en not_active Abandoned
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2003
- 2003-08-27 US US10/648,514 patent/US20040035848A1/en not_active Abandoned
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JPH1140330A (ja) * | 1997-07-19 | 1999-02-12 | Ibiden Co Ltd | ヒーターおよびその製造方法 |
JPH11297806A (ja) * | 1998-04-15 | 1999-10-29 | Ulvac Corp | ホットプレート |
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WO2017081951A1 (ja) * | 2015-11-12 | 2017-05-18 | 京セラ株式会社 | ヒータ |
KR20180066149A (ko) * | 2015-11-12 | 2018-06-18 | 쿄세라 코포레이션 | 히터 |
JPWO2017081951A1 (ja) * | 2015-11-12 | 2018-08-30 | 京セラ株式会社 | ヒータ |
KR102041208B1 (ko) * | 2015-11-12 | 2019-11-06 | 쿄세라 코포레이션 | 히터 |
US11116046B2 (en) | 2015-11-12 | 2021-09-07 | Kyocera Corporation | Heater |
JP2018060833A (ja) * | 2016-09-30 | 2018-04-12 | 新光電気工業株式会社 | 静電チャック、基板固定装置 |
Also Published As
Publication number | Publication date |
---|---|
US20030034341A1 (en) | 2003-02-20 |
EP1204299A1 (en) | 2002-05-08 |
US20040035848A1 (en) | 2004-02-26 |
US20020134775A1 (en) | 2002-09-26 |
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