WO2006064697A1 - 熱処理板の温度設定方法,熱処理板の温度設定装置,プログラム及びプログラムを記録したコンピュータ読み取り可能な記録媒体 - Google Patents
熱処理板の温度設定方法,熱処理板の温度設定装置,プログラム及びプログラムを記録したコンピュータ読み取り可能な記録媒体 Download PDFInfo
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- WO2006064697A1 WO2006064697A1 PCT/JP2005/022454 JP2005022454W WO2006064697A1 WO 2006064697 A1 WO2006064697 A1 WO 2006064697A1 JP 2005022454 W JP2005022454 W JP 2005022454W WO 2006064697 A1 WO2006064697 A1 WO 2006064697A1
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- heat treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/06—Apparatus for monitoring, sorting, marking, testing or measuring
- H10P72/0602—Temperature monitoring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/04—Apparatus for manufacture or treatment
- H10P72/0431—Apparatus for thermal treatment
- H10P72/0432—Apparatus for thermal treatment mainly by conduction
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/04—Apparatus for manufacture or treatment
- H10P72/0451—Apparatus for manufacturing or treating in a plurality of work-stations
- H10P72/0452—Apparatus for manufacturing or treating in a plurality of work-stations characterised by the layout of the process chambers
- H10P72/0458—Apparatus for manufacturing or treating in a plurality of work-stations characterised by the layout of the process chambers vertical arrangement
Definitions
- Heat treatment plate temperature setting method heat treatment plate temperature setting device, program, and computer-readable recording medium recording the program
- the present invention relates to a temperature setting method for a heat treatment plate, a temperature setting device for a heat treatment plate, a program, and a computer-readable recording medium on which the program is recorded.
- heat treatment pre-baking
- chemical reaction in the resist film after exposure of noturn Multiple heat treatments such as heat treatment to promote (post exposure baking) and heat treatment after development processing (post baking) are performed.
- the heat treatment is usually performed by a heat treatment apparatus, and is performed by placing a wafer on a hot plate and heating.
- a hot plate is used that can be divided into multiple regions and set the temperature for each region.
- the temperature setting of the hot plate performed before the heat treatment is performed using a temperature measurement wafer that is placed on the hot plate and measures the temperature of the hot plate (see Patent Document 1).
- a temperature measurement wafer is placed on a hot plate, placed until the temperature measured by the temperature measurement wafer becomes uniform within the wafer surface, and the temperature of each region of the hot plate is set when the temperature becomes uniform. I was doing it.
- a temperature measurement wafer is placed on a hot plate and the force is applied for about 10 to 20 minutes.
- the temperature measurement wafer is placed on the hot plate for about 10 to 20 minutes, and when the in-plane temperature of the temperature measurement wafer becomes uniform,
- the temperature within the wafer surface is actually strictly uniform within the actual wafer processing period in which the processing wafer is placed on the hot plate and the force is completed in about 60 to 90 seconds. It was confirmed! For this reason, for example, on the wafer by a photolithography process. There is a possibility that the pattern to be formed varies in the wafer surface.
- Patent Document 1 Japanese Patent Laid-Open No. 2002-124457
- the present invention has been made in view of the strong points, and sets the temperature of a heat treatment plate such as a hot plate so that a substrate such as a wafer is uniformly heated within the substrate surface during actual heat treatment.
- the object is to provide a method, a temperature setting device for a heat treatment plate, a program, and a computer-readable recording medium in which the program is recorded.
- the present invention for achieving the above object is a method for setting a temperature of a heat treatment plate on which a substrate is placed and heat-treated.
- the heat treatment plate is divided into a plurality of regions, and the temperature can be set for each region.
- a second step of setting the temperature of each region is a predetermined heat treatment time elapses after the substrate is placed on the heat treatment plate during the actual heat treatment.
- the substrate is uniformly heated by the heat treatment.
- the line width of the circuit pattern is uniformly formed on the substrate.
- Another aspect of the present invention is a temperature setting method for a heat treatment plate on which a substrate is placed and heat-treated.
- the heat treatment plate is divided into a plurality of regions, and the temperature can be set for each region.
- the temperature of each region of the heat treatment plate is set so that the temperature within the substrate surface is kept uniform during the heat treatment period from when the substrate is placed on the heat treatment plate during the actual heat treatment until the predetermined heat treatment time elapses.
- a second step is a second step.
- the substrate is uniformly heated by the heat treatment.
- the circuit pattern The line width is formed uniformly.
- the temperature around the substrate may be the temperature of each region of the heat treatment plate or the ambient temperature around the substrate on the heat treatment plate.
- the temperature around the substrate may be a member temperature around the substrate on the heat treatment plate.
- the heat treatment period in the heat treatment period, the temperature during the initial temperature fluctuation period, the temperature during the temperature steady period after the temperature fluctuation period, the accumulated temperature during a certain period, The heat treatment is performed so that one or more of the integrated reaction temperatures obtained by multiplying the reaction coefficient of the film on the substrate and the substrate temperature during the heat treatment period and integrating the results are kept uniform in the substrate surface.
- the temperature of each area of the board may be set.
- the reaction coefficient is a coefficient indicating the degree of reaction of the film at each temperature.
- a method for setting a temperature of a heat treatment plate on which a substrate is placed and heat-treated is divided into a plurality of regions, and the temperature can be set for each region. Based on the first step of converting the substrate processing result to the temperature of the substrate placed on the heat treatment plate during the heat treatment and the result of the temperature conversion, the substrate is placed on the heat treatment plate during the actual heat treatment. And a second step of setting the temperature of each region of the heat treatment plate so that the temperature in the substrate surface is kept uniform during the heat treatment period from the start of the heat treatment until the predetermined heat treatment time elapses.
- the substrate is uniformly heated by the heat treatment.
- the processing result of the substrate may be a line width of a pattern formed on the substrate by a photolithography technique including the heat treatment.
- the temperature during the heat treatment period is multiplied by the substrate temperature.
- the temperature of each region of the heat treatment plate so that one or more of the integrated reaction temperatures obtained by integrating the above are kept uniform within the substrate surface.
- the present invention according to another aspect is a temperature setting device for a heat treatment plate on which a substrate is placed and heat-treated, and the heat treatment plate is divided into a plurality of regions, and the temperature can be set for each region.
- the temperature measurement substrate is mounted on the heat treatment plate, and the temperature of the substrate placed on the heat treatment plate during the heat treatment is measured in a simulated manner. Based on the results of the above, the heat treatment is performed so that the temperature in the substrate surface is kept uniform during the heat treatment period from when the substrate is placed on the heat treatment plate during the actual heat treatment until the predetermined heat treatment time elapses.
- a controller for setting the temperature of each region of the plate.
- the substrate is uniformly heated by the heat treatment.
- the line width of the circuit pattern is uniformly formed on the substrate.
- the present invention according to another aspect is a temperature setting device for a heat treatment plate on which a substrate is placed and heat-treated, the heat treatment plate being partitioned into a plurality of regions, and the temperature can be set for each region.
- a control unit that sets the temperature of each region.
- the temperature sensor may measure the temperature of each region of the heat treatment plate, or may measure the ambient temperature around the substrate on the heat treatment plate.
- the temperature sensor measures the temperature of members around the substrate on the heat treatment plate. May be.
- the control unit may include a temperature in an initial temperature fluctuation period, a temperature in a temperature steady period after the temperature fluctuation period, an integrated temperature in a predetermined period, or a film on the substrate in the heat treatment period.
- the temperature of each region of the heat treatment plate is maintained so that one or more of the integrated reaction temperatures obtained by multiplying the reaction coefficient of the substrate and the substrate temperature and integrating them are kept uniform within the substrate surface. You can set
- the present invention according to another aspect is a temperature setting device for a heat treatment plate on which a substrate is mounted and heat-treated, the heat treatment plate being partitioned into a plurality of regions, and the temperature can be set for each region.
- the substrate processing result is converted into the temperature of the substrate placed on the heat treatment plate during the heat treatment. Based on the temperature conversion result, whether the substrate is placed on the heat treatment plate during the actual heat treatment?
- a control unit is provided to set the temperature of each region of the heat treatment plate so that the temperature in the substrate surface is kept uniform during the heat treatment period until the predetermined heat treatment time elapses! / Speak.
- the substrate is uniformly heated by the heat treatment.
- the processing result of the substrate may be a line width of a pattern formed on the substrate by a photolithography technique including the heat treatment.
- the control unit multiplies the temperature during the heat treatment period by multiplying the temperature during the steady temperature period, the accumulated temperature during the predetermined period, or the reaction coefficient of the film on the substrate during the heat treatment period and the substrate temperature.
- the temperature of each region of the heat treatment plate may be set so that one or more of the reaction temperatures are kept uniform within the substrate surface.
- the control unit has a function of acquiring temperature data relating to the temperature of the substrate within the heat treatment period, and a function of determining whether the temperature uniformity within the substrate surface is appropriate based on the acquired temperature data! In the case of negative determination, based on the correction value and the function of calculating the correction value of the temperature setting parameter of the heat treatment plate from the temperature data and preset correction value calculation data, And a function for changing the temperature setting parameter.
- the control unit calculates the correction value calculation data. Fix It has a function to do.
- the present invention is a program for causing a computer to realize the function of the control unit in the temperature setting device for a heat treatment plate, wherein the heat treatment apparatus A temperature setting device for a heat treatment plate that is mounted and heat treated, and further, the heat treatment plate is divided into a plurality of regions, and the temperature can be set for each region.
- the heat treatment apparatus estimates a temperature of the substrate placed on the heat treatment plate during the heat treatment from a temperature sensor for measuring a temperature around the substrate placed on the heat treatment plate, and a temperature measurement result by the temperature sensor.
- the temperature within the substrate is kept uniform during the heat treatment period from when the substrate is placed on the heat treatment plate during the actual heat treatment until the predetermined heat treatment time elapses.
- it has a control unit that sets the temperature of each region of the heat-treated plate.
- the present invention provides a computer-readable recording medium storing a program for causing a computer to realize the function of the control unit in the temperature setting device for a heat treatment plate.
- the heat treatment device is a temperature setting device for a heat treatment plate that places a substrate and heat-treats it.
- the heat treatment plate is further divided into a plurality of regions, and the temperature can be set for each region.
- the heat treatment apparatus determines the temperature of the substrate placed on the heat treatment plate during the heat treatment from a temperature sensor for measuring the temperature around the substrate placed on the heat treatment plate and the result of the temperature measurement by the temperature sensor.
- the temperature in the substrate surface is uniform during the heat treatment period from when the substrate is placed on the heat treatment plate during the actual heat treatment until the predetermined heat treatment time elapses.
- a control unit that sets the temperature of each region of the heat treatment plate so that it is maintained! / Speak.
- the substrate can be strictly and uniformly heat-treated at the time of actual heat treatment, the in-plane processing is performed uniformly and the yield is improved.
- FIG. 1 is a plan view showing an outline of the configuration of a coating and developing treatment system in the present embodiment.
- FIG. 2 is a front view of the coating and developing treatment system of FIG. 1.
- FIG. 3 is a rear view of the coating and developing treatment system of FIG. 1.
- FIG. 4 is an explanatory view of a longitudinal section showing an outline of the configuration of the PEB apparatus.
- FIG. 5 is a plan view showing a configuration of a hot plate of the PEB apparatus.
- FIG. 6 is a graph showing temperature fluctuation of a wafer during heat treatment.
- FIG. 7 is an equation for calculating the integrated reaction temperature.
- FIG. 8 is a perspective view showing a configuration of a temperature measuring device.
- FIG. 9 is a plan view of a temperature measurement wafer.
- FIG. 10 is a block diagram showing a configuration of a control unit.
- FIG. 11 is an explanatory diagram of a correction value calculation model.
- FIG. 12 is a flowchart of the temperature setting process.
- FIG. 13 is a graph showing the wafer temperature during the heat treatment for explaining how the temperature variation is corrected.
- FIG. 14 is an explanatory view of a longitudinal section showing an outline of the configuration of a PEB device provided with a temperature sensor in the processing chamber.
- FIG. 15 is an explanatory view of a longitudinal section showing an outline of the configuration of a PEB device in which a temperature sensor is arranged on a lid.
- FIG. 16 is a plan view of a coating and developing treatment system provided with a line width measuring device.
- FIG. 17 is a block diagram showing another configuration example of the control unit.
- FIG. 1 is a plan view schematically showing the configuration of the coating and developing treatment system 1 in the present embodiment
- FIG. 2 is a front view of the coating and developing treatment system 1
- FIG. FIG. 1 is a plan view schematically showing the configuration of the coating and developing treatment system 1 in the present embodiment
- FIG. 2 is a front view of the coating and developing treatment system 1
- FIG. FIG. 1 is a plan view schematically showing the configuration of the coating and developing treatment system 1 in the present embodiment
- FIG. 2 is a front view of the coating and developing treatment system 1
- FIG. FIG. 1 is a plan view schematically showing the configuration of the coating and developing treatment system 1 in the present embodiment
- FIG. 2 is a front view of the coating and developing treatment system 1
- FIG. FIG. 1 is a plan view schematically showing the configuration of the coating and developing treatment system 1 in the present embodiment
- FIG. 2 is a front view of the coating and developing treatment system 1
- FIG. FIG. 1 is a plan view schematically showing the configuration of the coating and developing treatment
- the coating / development processing system 1 carries out, for example, 25 wafers W in a cassette unit, and loads / unloads wafers W into / from the cassette C with external force applied to the coating / development processing system 1.
- a cassette station 2 a processing station 3 in which a plurality of various processing apparatuses for performing a predetermined processing in a single wafer type in a photolithography process are arranged in multiple stages, and the processing station 3 are provided adjacent to the processing station 3. It has a configuration in which an interface unit 4 for transferring a wafer W to and from an exposure apparatus (not shown) is integrally connected.
- a plurality of cassettes C can be placed in a row in a predetermined position on the cassette mounting table 5 in the X direction (vertical direction in FIG. 1).
- the cassette station 2 is provided with a wafer transfer body 7 that can move in the X direction on the transfer path 6.
- Wafer carrier 7 is also movable in the wafer arrangement direction (Z direction; vertical direction) of wafer W accommodated in cassette C, and is selected for wafer W in each cassette C arranged in the X direction. Accessible.
- the wafer carrier 7 has an alignment function for aligning the wafer W. As will be described later, the wafer transfer body 7 can also access the extension device 32 belonging to the third processing unit group G3 on the processing station 3 side to transfer the wafer W.
- a main transfer device 13 is provided at the center thereof, and various processing devices are arranged in multiple stages around the main transfer device 13 to form a processing device group. .
- the coating and developing treatment system 1 four processing device groups Gl, G2, G3, and G4 are arranged, and the first and second processing device groups Gl and G2 are arranged on the front side of the coating and developing treatment system 1.
- the third processing unit group G3 is arranged adjacent to the cassette station 2, and the fourth processing unit group G4 is arranged adjacent to the interface unit 4.
- a fifth processing unit group G5 indicated by a broken line can be separately arranged on the back side.
- the main transfer device 13 can transfer the wafer W to various processing devices (described later) arranged in these processing device groups G1 to G5.
- the resist coating device 17 and the development processing device 18 for developing the exposed wafer W are arranged in two stages in order of the lower force.
- the resist coating unit 19 and the development processing unit 20 are stacked in two stages in order of the lower force.
- the extension device 32, the pre-baking device 33, 34 for drying the solvent in the resist solution, and the post-baking device 35, 36, etc. for performing the heat treatment after the development processing are also provided in order, for example, in seven steps. It is piled up.
- the cooling unit 40 for example, the cooling unit 40, an extension that naturally cools the mounted wafer W, the cooling unit 41, the extension unit 42, the cooling unit 43, and the exposed wafer W are heated.
- Post-exposure baking equipment (hereinafter referred to as “P EB equipment”) 44, 45, post-baking equipment 46, 47, etc. are stacked in order, for example, in 8 stages.
- a wafer carrier 50 is provided at the center of the interface unit 4.
- the wafer carrier 50 is configured so that it can freely move in the X and Z directions and rotate in the ⁇ direction (rotating direction around the Z axis).
- the wafer W can be transferred by accessing the cooling device 41, the extension device 42, the peripheral exposure device 51, and the exposure device (not shown).
- the PEB device 44 includes a cover body 60 that is located on the upper side and is movable up and down, and a hot plate housing part that forms a processing chamber S integrally with the lid body 60 located on the lower side. 61.
- the lid body 60 has a substantially conical shape that gradually increases toward the center, and an exhaust part 60a is provided at the top.
- the atmosphere in the processing chamber S is uniformly exhausted from the exhaust part 60a.
- a hot plate 63 as a heat treatment plate for placing and heating the wafer W is provided at the center of the hot plate housing 61.
- the hot plate 63 has a substantially disk shape with a large thickness.
- support pins 64 for supporting the wafer W when the wafer W is placed are provided at a plurality of locations.
- the heat plate is divided into five regions 63a, 63b, 63c, 63d, and 63e.
- the hot plate 63 is divided into, for example, a circular area 63a located at the center when viewed from the plane and areas 63b to 63e obtained by dividing the circumference into four arcs.
- Each region 63a to 63e of the hot plate 63 is individually provided with a heater 65 that generates heat by power feeding, and can be heated for each region 63a to 63e.
- a temperature sensor 66 is provided in each of the regions 63a to 63e. The measurement result of the temperature sensor 66 can be output to the heater control device 67. Based on the measurement result of the temperature sensor 66, the heater control device 67 can adjust the amount of power supplied to the heater 65 so that the temperature of each of the regions 63a to 63e becomes a predetermined set temperature.
- Each region 63a to 63e is equipped with multiple temperature sensors 66! /!
- lifting pins 70 for supporting and lifting the wafer W when the wafer W is loaded and unloaded.
- the elevating pin 70 is configured to be movable up and down by an elevating drive mechanism 71.
- a through hole 72 is formed near the center of the hot plate 63 so as to penetrate the hot plate 63 in the direction of lead, and the lifting pins 70 pass through the through hole 72 and can protrude onto the hot plate 63. ing.
- the hot plate accommodating portion 61 has an annular support member 80 for accommodating and supporting the outer peripheral portion of the hot plate 63, and a support base 81 for supporting the support member 80 with a lower force.
- a heat insulating material is used for the support member 80 so that the heat of the hot plate 63 does not escape to the outside.
- the support base 81 is formed in a substantially cylindrical shape having an upper surface opened.
- the hot plate housing 61 has a substantially cylindrical support ring 82 that surrounds the support member 80 and its support base 81.
- a blow-out port 82 a that ejects inert gas into the processing chamber S is formed, and the inside of the processing chamber S is purged by the ejection of inert gas from the blow-out port 82 a. can do.
- a cylindrical case 83 serving as an outer periphery of the hot plate accommodating portion 61 is provided outside the support ring 82.
- the wafer W is transferred to above the hot plate 63 in a state where the lid 60 is raised and the processing chamber S is opened. It is handed over to the lift pin 70 that has been waiting and rising. Subsequently, the lid body 60 is lowered, and the lid body 60 is integrated with the hot plate container 61 to close the processing chamber S. Then, the lifting pins 70 are lowered to control the wafer W to a predetermined temperature. Placed on the hot plate 63. At this time, heating of the wafer W is started. Be started.
- the force on the hot plate 63 is also raised by the lift pins 70 in the wafer W, and the heating of the wafer W is completed. Thereafter, the lid 60 is raised and the processing chamber S is opened, and then Ueno and W are carried out of the PEB device 44 and the heat treatment is completed.
- a predetermined heat treatment time for example, about 60 to 90 seconds
- the temperature setting device 90 for setting the temperature of the hot plate 63 of the PEB device 44 configured as described above will be described.
- the wafer W is placed on the hot plate 63 during the heat treatment period H until the predetermined heat treatment time elapses after the wafer W is placed on the hot plate 63 during the actual heat treatment.
- the temperature fluctuation period H during which the wafer temperature rises toward the target temperature T, and
- the temperature setting device 90 in the embodiment can individually set the temperatures of the regions 63a to 63e of the hot plate 63.
- the temperature setting device 90 is used in each region 63a to 63e, for example, the temperature during the temperature fluctuation period H, the temperature during the temperature steady period H, the accumulated temperature during the reaction period H, or the heat treatment.
- the temperature can be set by selecting one or more of the integrated reaction temperatures obtained by multiplying the temperature in the treatment time H by the reaction coefficient of the resist film on the wafer surface and integrating them.
- the accumulated temperature during the reaction period H can be expressed, for example, by the shaded area shown in FIG.
- Equation (1) T is the temperature, s is the time, and L is the reaction coefficient.
- the temperature setting device 90 includes, for example, a temperature measuring device 100 and a control unit 101 as shown in FIG.
- the control unit 101 can communicate with the temperature measurement device 100 and the heater control device 67.
- the temperature measuring apparatus 100 includes a temperature measuring wafer 110 that is placed on a hot plate 63 and measures the wafer temperature, a cable 111, and a measuring instrument 112, for example, as shown in FIG.
- the temperature measurement wafer 110 is formed of the same shape and the same material as the processed wafer W.
- a plurality of temperature sensors 113 are filled in the temperature measurement wafer 110. Uniformly arranged. Thereby, the temperature of each wafer area 110a to 110e corresponding to each area 63a to 63e of the hot plate 63 can be measured.
- the temperature measuring wafer 110 and the measuring instrument 112 are connected by a cable 111, and the temperature detected by the temperature measuring wafer 110 is output to the measuring instrument 112 through the cable 111.
- the temperature of wafer regions 110a-110e can be measured.
- the temperature measured by the measuring instrument 112 can be output to the control unit 101 by wire or wirelessly.
- the temperature measuring device 100 may be one in which the temperature detected by the temperature measuring wafer 110 is output to the measuring device 112 by radio.
- the control unit 101 has a function of a general-purpose computer including, for example, a CPU and a memory.
- the functions of the control unit 101 described below are executed by a program installed from a computer-readable recording medium, for example.
- the control unit 101 is connected to the calculation unit 120, the temperature during the temperature fluctuation period H, the temperature during the steady temperature period H, the accumulated temperature during the reaction period H, or the heat treatment time H. Integration in
- the data storage unit 122 for storing the temperature data input from the measuring instrument 112, and the hot plate 63
- a correction value calculation model M as a correction value calculation data for calculating the correction value of the temperature setting parameter is provided.
- the model storage unit 123 stores a model M and a program storage unit 124 stores various programs.
- predetermined temperature data is acquired from the measuring instrument 112, and the temperature data acquisition program P 1 stored in the data storage unit 122 and the temperature data stored in the data storage unit 122 are stored.
- the compensation value calculation model M is used to calculate the compensation value for the temperature setting parameter Correction value calculation program P3 to be calculated, temperature setting parameter change program P4 to change the temperature setting parameter in the heater controller 67 based on the correction value, and uniformity of the wafer surface temperature even if the temperature setting parameter is changed.
- the correction value calculation model M includes a temperature setting parameter a for adjusting the temperature during the temperature fluctuation period H and a temperature setting for adjusting the temperature during the temperature steady period H as shown in FIG. Temperature setting parameter c for adjusting the integrated temperature of constant parameter b and reaction period H,
- the matrix force indicating the correlation between each variation amount of the temperature setting parameter d for adjusting the integrated reaction temperature during the heat treatment period H and the variation amount of the wafer temperature is also obtained.
- the temperature setting parameter a for the temperature during the temperature fluctuation period H affects the temperature fluctuation speed of the wafer W by changing the amount of power supplied to the hot plate 63.
- the temperature setting parameter d in degrees affects the target temperature T, for example. Note that
- the correlation between the variation amounts of the temperature setting parameters a to d and the variation amount of the wafer temperature may be a correlation obtained for each region of the hot plate 63.
- FIG. 12 is a flow diagram showing the powerful temperature setting process.
- the temperature of the temperature fluctuation period H the temperature during the temperature steady period H
- An adjustment target to be uniformly adjusted is selected and input to the input unit 120 of the control unit 101 (step Sl in FIG. 12). Below, the temperature during the temperature fluctuation period H and the temperature during the steady temperature period H are selected.
- the temperature measurement wafer 110 is placed on the hot plate 63, and the temperature measurement wafer 110 in the heat treatment period H from the time immediately after placement until the same time as the heat treatment time elapses.
- the temperature is measured (step S2 in FIG. 12).
- the temperature data acquisition program P1 can change the temperature data of the temperature fluctuation period H and the temperature steady period H into, for example, each temperature.
- Each of the areas 110a to 110e is input to the control unit 101 and stored in the data storage unit 122 (step S3 in FIG. 12). Next, the suitability of uniformity between the wafer regions 110a to 110e in the temperature fluctuation period H and the temperature steady period H is judged by the judgment program P2 (
- Step S4) in FIG. This determination is made, for example, by comparing the maximum temperature difference between wafer regions with a preset threshold value. If the maximum temperature difference exceeds the threshold value, it is determined that the difference is not uniform and the threshold value is not exceeded. Determined to be uniform.
- the temperature setting process Ends. If it is determined that the temperature is uneven, the correction value calculation program P3 uses the correction value calculation model M to set the temperature for the temperature fluctuation period H and temperature steady period H.
- Correction values for parameters a and b are calculated (step S5 in FIG. 12).
- the temperature setting parameter change program P4 outputs the correction value to, for example, the heater controller 67 and changes the values of the existing temperature setting parameters a and b (step S6 in FIG. 12). ).
- the temperature settings of the regions 63a to 63e in the heat treatment period H of the wafer W are adjusted. For example, as shown in FIG. The temperature becomes uniform.
- the temperature measurement is performed again with the temperature measurement wafer 110, and the wafer regions 110a to 110 at the temperatures in the temperature fluctuation period H and the temperature steady period H are measured.
- the suitability of uniformity between e is judged, and it is confirmed whether the temperature is uniform within the wafer surface. If the temperature is uniform on the wafer surface, the temperature setting process ends. If the temperature is not uniform, the correction value of the temperature setting parameter is calculated again and the temperature setting parameter is changed. This is repeated a predetermined number of times or more, and if the temperature still does not become uniform within the wafer surface, the data content of the correction value calculation model M is corrected, for example, by the model correction program P5 (step S7 in FIG. 12).
- the temperature in the wafer surface within the actual heat treatment period H can be strictly adjusted, so that the heat treatment can be performed uniformly in the wafer surface.
- the adjustment contents of the temperature setting include the temperature during the temperature fluctuation period H within the heat treatment period H and the temperature steady time H.
- Temperature, accumulated temperature for reaction period H, or accumulated reaction temperature for heat treatment period H can be selected.
- the temperature setting that affects the processing result can be adjusted as necessary.
- All the temperature settings including the response temperature may be adjusted, or one of them may be adjusted.
- the temperature in the wafer surface during the heat treatment is measured using the temperature measuring wafer 110.
- the peripheral temperature of the wafer W on the hot plate 63 in the PEB apparatus 44 is measured.
- the temperature in the wafer surface during heat treatment is estimated from the ambient temperature. May be.
- the temperature of the hot plate 63 may be measured as the ambient temperature of the wafer W.
- the program storage unit 124 of the control unit 101 stores a temperature estimation program for estimating the temperature of the wafer W placed on the hot plate 63 from the temperature of the hot plate 63 itself.
- the temperature estimation program can estimate the temperature of the wafer W from, for example, correlation data between the temperature of the hot plate 63 and the temperature of the wafer W obtained in advance.
- the temperature of the hot plate 63 When the temperature of the hot plate 63 is set, the temperature of each of the regions 63a to 63e measured by the temperature sensors 66 of the hot plate 63 is also transferred to the control unit 101 by the temperature data acquisition program P1. The data is input and stored in the data storage unit 122. After that, the temperature estimation program estimates the temperature of each region on the wafer surface. Thereafter, as in the above-described embodiment, the suitability of temperature uniformity within the wafer surface is determined. If the determination is negative, a correction value for a predetermined temperature setting parameter is calculated and the temperature setting parameter is calculated. Is changed. According to this example, the temperature of the hot plate 63 can be set using the existing temperature sensor 66 of the PEB device 44 without using the temperature measuring wafer 110.
- the ambient temperature around the wafer W placed on the hot plate 63 may be used as the ambient temperature around the wafer W.
- a plurality of temperature sensors 130 are arranged above the wafers W in the processing chamber S, and the temperature of the atmosphere around the wafer W is measured. May be estimated.
- the temperature of the peripheral member of the wafer W placed on the hot plate 63 may be used as the peripheral temperature of the wafer W.
- a plurality of temperature sensors 135 are arranged on a lid 60 located above the wafer W of the hot plate 63, and the temperature of the lid 60 close to the wafer W is measured.
- the temperature of the wafer W may be estimated from the temperature of the lid 60.
- the peripheral member of the wafer W for example, the support member 80 or the support base 81 of the hot plate accommodating portion 61 may be used instead of the lid 60.
- the suitability of the temperature uniformity in the wafer surface during the heat treatment is determined based on the temperature measured by the temperature measurement wafer 110, but based on the processing result of the wafer W.
- the suitability of temperature uniformity within the wafer surface may be determined.
- the line width of the resist pattern formed on the wafer W by the photolithography process may be used as the processing result of the wafer W.
- a line width measuring device 140 for measuring the line width on the wafer W is mounted on the back side of cassette station 2 in System 1.
- the line width measuring device 140 may be provided outside the coating and developing treatment system 1.
- the program storage unit 124 of the control unit 101 acquires line width data of each divided area in the wafer surface from the line width measurement device 140 as shown in FIG.
- the line width data acquisition program Q1 stored in the data storage area, the conversion program Q2 that converts the line width data in the data storage unit 122 into the temperature of the wafer W during the heating process, and the wafer surface based on the converted temperature data Calculates the correction value for the temperature setting parameter of the hot plate 63 using the determination program Q3 for determining the suitability of the internal temperature uniformity and the correction value calculation model M when the determination by the determination program Q3 is negative.
- Correction value calculation program Q4 to be performed, temperature setting parameter change program Q5 to change the temperature setting parameter in the heater control device 67 based on the correction value, and even if the temperature setting parameter is changed
- the conversion by the conversion program Q1 is performed using the correlation data between the Ueno after the completion of the photolithography process, the line width on W, and the wafer temperature during the heat treatment, which was obtained in advance.
- the wafer W that has been subjected to the photolithography process in the coating and developing treatment system 1 is transferred to the line width measuring device 140, and the line width of the pattern formed on the wafer W is measured. Is measured.
- This measurement result is input to the control unit 101 by the line width data acquisition program Q1, for example.
- the line width result is converted into the temperature of the wafer W during the heat treatment by the conversion program Q2.
- the suitability of temperature uniformity within the wafer surface is judged by judgment program Q3, and in the case of a negative judgment, correction value calculation model M is used by correction value calculation program Q4.
- the correction value of the temperature setting parameter of the hot plate 63 is calculated, and the predetermined temperature setting parameter is changed by the temperature setting parameter change program Q5.
- the uniformity of the temperature in the wafer surface during the heat treatment is evaluated based on the line width formed on the wafer W, so that the line width in the wafer surface can be finally made uniform. .
- one of the accumulated reaction temperatures during the heat treatment period H can be selected, the suitability of uniformity within the wafer W surface at the selected temperature is judged, and if it is not uniform, the temperature setting corresponding to the selected temperature is set Try changing the parameters.
- the line width of the pattern formed on the wafer W is used as the processing result of the wafer W.
- other processing results such as the film thickness of the film formed on the wafer W are used. Also good.
- the temperature measurement wafer 110 capable of wireless transmission is used for temperature measurement of the hot plate
- the temperature measurement wafer 100 is carried from the cassette station 2 in the same manner as the normal processing wafer W
- the wafer is transferred to a predetermined heating apparatus at the processing station 3 through the wafer transfer body 7 and the main transfer apparatus 13.
- each heat treatment apparatus in the processing station 3 has a different installation position and direction, and therefore, for each heat treatment apparatus, the temperature measurement wafer 110 is placed on the hot plate, that is, for temperature measurement.
- Correspondence between each wafer region 11 Oa to 110e of the wafer 110 and each region of the hot plate is different.
- the relationship between the notch position of the temperature measuring wafer 110 when it is loaded into the cassette station 2 and the notch position of the temperature measuring wafer 100 when placed on the hot plate of each heat treatment apparatus is previously determined.
- the notch position information is obtained and stored in the control unit 101 of the temperature measuring device 100, for example.
- the correction calculation model M calculates the correction value of the temperature setting parameter for each region of the hot plate in consideration of the notch position information.
- the notch position information is obtained in advance.
- the notch position is detected by the sensor when the temperature measurement wafer 110 is loaded into the S cassette station 2, and the transfer is performed based on the detected information. It is possible to automatically calculate the notch position in the previous heat treatment device and store the information as notch position information.
- the temperature set temperature is The plate 63 was divided into five areas, but the number can be chosen arbitrarily.
- the temperature of the hot plate 63 of the PEB device 44 is set as an example.
- other heat treatment devices such as a pre-baking device and a post-baking device equipped with a hot plate
- the present invention can also be applied to a cooling processing apparatus provided with a cooling plate for mounting and cooling the wafer W.
- the present invention can also be applied to other substrate heat treatment apparatuses such as FPD (Flat Panel Display) and photomask masks other than wafers.
- the present invention is useful when setting the temperature of the heat treatment plate so that the substrate is uniformly heat-treated.
Landscapes
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Coating Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/721,612 US8014895B2 (en) | 2004-12-13 | 2005-12-07 | Temperature setting method of heat processing plate, temperature setting apparatus of heat processing plate, program, and computer-readable recording medium recording program thereon |
| US13/180,278 US8874254B2 (en) | 2004-12-13 | 2011-07-11 | Temperature setting method of heat processing plate, temperature setting apparatus of heat processing plate, program, and computer-readable recording medium recording program thereon |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004360064A JP4444090B2 (ja) | 2004-12-13 | 2004-12-13 | 熱処理板の温度設定方法,熱処理板の温度設定装置,プログラム及びプログラムを記録したコンピュータ読み取り可能な記録媒体 |
| JP2004-360064 | 2004-12-13 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/721,612 A-371-Of-International US8014895B2 (en) | 2004-12-13 | 2005-12-07 | Temperature setting method of heat processing plate, temperature setting apparatus of heat processing plate, program, and computer-readable recording medium recording program thereon |
| US13/180,278 Division US8874254B2 (en) | 2004-12-13 | 2011-07-11 | Temperature setting method of heat processing plate, temperature setting apparatus of heat processing plate, program, and computer-readable recording medium recording program thereon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006064697A1 true WO2006064697A1 (ja) | 2006-06-22 |
Family
ID=36587755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/022454 Ceased WO2006064697A1 (ja) | 2004-12-13 | 2005-12-07 | 熱処理板の温度設定方法,熱処理板の温度設定装置,プログラム及びプログラムを記録したコンピュータ読み取り可能な記録媒体 |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US8014895B2 (ja) |
| JP (1) | JP4444090B2 (ja) |
| KR (1) | KR100912295B1 (ja) |
| WO (1) | WO2006064697A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010267684A (ja) * | 2009-05-12 | 2010-11-25 | Nikon Corp | 露光方法及び装置、並びに基板温度調整装置 |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2006173185A (ja) | 2006-06-29 |
| US8014895B2 (en) | 2011-09-06 |
| KR20070086130A (ko) | 2007-08-27 |
| JP4444090B2 (ja) | 2010-03-31 |
| US8874254B2 (en) | 2014-10-28 |
| US20090254226A1 (en) | 2009-10-08 |
| KR100912295B1 (ko) | 2009-08-17 |
| US20110270465A1 (en) | 2011-11-03 |
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