WO2005069359A1 - 基板処理装置および半導体装置の製造方法 - Google Patents
基板処理装置および半導体装置の製造方法 Download PDFInfo
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- WO2005069359A1 WO2005069359A1 PCT/JP2004/018253 JP2004018253W WO2005069359A1 WO 2005069359 A1 WO2005069359 A1 WO 2005069359A1 JP 2004018253 W JP2004018253 W JP 2004018253W WO 2005069359 A1 WO2005069359 A1 WO 2005069359A1
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- Prior art keywords
- pressure
- hollow body
- space
- wafer
- hollow
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67109—Apparatus for thermal treatment mainly by convection
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/4401—Means for minimising impurities, e.g. dust, moisture or residual gas, in the reaction chamber
Definitions
- the present invention relates to a substrate processing apparatus and a method for manufacturing a semiconductor device, and more particularly, to a technique for improving a withstand voltage structure.
- a substrate processing apparatus for manufacturing a semiconductor integrated circuit device (hereinafter, referred to as an IC)
- IC semiconductor integrated circuit device
- wafers Semiconductor wafers (hereinafter referred to as "wafers") on which integrated circuits are to be produced, which are effective in performing various thermal treatments such as film annealing, oxide film growth and diffusion. .
- a substrate processing apparatus that performs various types of heat processing such as film formation annealing, oxide film growth and diffusion generally includes a vacuum vessel.
- Patent Document 1 JP-A-10-74827
- a pair of flat plates may be fixed to both surfaces of the honeycomb structure by welding or the like. Due to the difficulty, there is a problem that the cost increases for practical use.
- An object of the present invention is to provide a substrate processing apparatus provided with a pressure-resistant structure that exhibits good pressure-resistant strength while suppressing an increase in cost.
- a substrate processing apparatus includes a first space in which a substrate to be processed is disposed, a second space in which a heater for heating the substrate to be processed is installed, And a partition panel for partitioning the second space from the second space, wherein the partition panel has a hollow body having a hollow interior, and a hollow of the hollow body in a state where it is not fixed to at least a portion on the second space side. And a pressure-resistant support housed in the space, wherein the pressure in the hollow portion of the hollow body is lower than or lower than the pressure in the second space.
- a substrate processing apparatus is a substrate processing apparatus including a pressure-resistant housing that accommodates a substrate to be processed and forms a processing chamber that is depressurized.
- a hollow body having a hollow inside, and a pressure-resistant support housed in the hollow portion of the hollow body in a state where the hollow body is not fixed to at least a portion opposite to the processing chamber. The inside of the hollow portion is reduced in pressure.
- the force due to the pressure difference between the hollow body and the second space acts in a direction in which the wall member of the hollow body that is in contact with the second space is pressed against the pressure-resistant support. Therefore, at least the wall member in contact with the second space does not need to be fixed to the pressure-resistant support. Unless the hollow body and the pressure-resistant support are fixed to each other in the production of the partition panel, the processing such as welding becomes extremely simple, so that the production cost can be reduced. Further, since the wall member of the hollow body does not need to be thickened, light attenuation and heat accumulation of the partition panel itself can be reduced, and thermal efficiency can be improved.
- the portion of the hollow body of the pressure-resistant support on the first space side is fixed, even if the pressure of the hollow portion of the hollow body is higher than that of the first space, Since the pressure difference between the first space and the hollow body does not become as large as the pressure difference between the first space and the second space, the thickness of the wall member of the hollow body should be set so large. You don't have to. Therefore, the light attenuation and the heat accumulation of the partition panel itself can be reduced, so that the thermal efficiency can be improved and the strength of the partition panel can be secured.
- the force due to the pressure difference between the inside and outside of the processing chamber acts in a direction in which the wall member on the processing chamber side of the hollow body is pressed against the pressure-resistant support, so that at least the side opposite to the processing chamber.
- the wall member need not be fixed to the pressure-resistant support. Unless the hollow body and the pressure-resistant support are fixed to each other during the production of the pressure-resistant housing, the processing such as welding becomes extremely simple, so that the manufacturing cost can be reduced. In addition, since the wall member of the hollow body does not need to be thick, the attenuation of light and the heat accumulation of the partition panel itself can be reduced, and the thermal efficiency can be improved.
- FIG. 1 is a partially cut plan view showing a multi-chamber processing apparatus according to an embodiment of the present invention.
- FIG. 2 is a side sectional view showing an RTP device.
- FIG. 3 is a perspective view showing a partition panel of the RTP device.
- FIG. 4 is a partially cut perspective view showing a hollow body.
- FIG. 5 is a perspective view showing a pressure-resistant support.
- FIG. 6 is a front sectional view showing the operation of the partition panel, where (a) shows a case where the inside is not depressurized, and (b) shows a case where the inside is depressurized.
- FIG. 7 is a side sectional view showing a two-wafer heat treatment apparatus.
- FIG. 8 shows a hollow body, (a) is a side sectional view, and (b) is a sectional view taken along line bb of (a).
- FIG. 9 is a perspective view showing a pressure-resistant support.
- FIGS. 10A and 10B are front cross-sectional views showing the operation of the process tube, wherein FIG. 10A shows a case where the inside is not depressurized, and FIG. 10B shows a case where the inside is depressurized.
- W Wafer (substrate), P: Pod (substrate carrier), 10 ⁇ Negative pressure transfer chamber (substrate transfer chamber), 1 1... Negative pressure transfer chamber housing, 12 ⁇ Negative Pressure transfer device (wafer transfer device), 13... Elevator, 20... Loading room (preliminary loading room), 21 ⁇ Loading cabinet, 22, 23 ⁇ Loading port, 24 ⁇ Gate valve , 25... Temporary placement table for loading room, 26, 27 ⁇ Loading gate, 28... Gate valve, 30... Loading room (preliminary room for loading), 31 ⁇ Carrying out of loading room, 32, 33 ⁇ Loading port, 34 ⁇ Gate valve, 35 ⁇ Temporary table for loading / unloading chamber, 36, 37 ⁇ Loading port, 38 ⁇ Gate valve, 40 ⁇ Positive pressure transfer chamber (wafer Transfer chamber), 41 Positive pressure transfer chamber housing, 42 Positive pressure transfer device (wafer transfer device), 45 Notch aligning device,
- first cooling unit third processing unit
- 64 ... second cooling unit fourth processing unit
- 65 67 ... wafer loading / unloading port
- 67A ... gate valve 70 ⁇ RTP equipment (substrate processing equipment), 71 processing chamber, 72 housing, 72a cup, 72b top plate, 72c bottom plate, 72d holding ring, 73 air cooling gas supply port, 74 ⁇ ⁇ First heating la , 82 ⁇ Inert gas Supply tube, 88 ⁇ Probe for radiation thermometer (temperature measurement device), 89 ⁇ Emissivity measurement device, 90 ⁇ ⁇ ⁇ Reference probe, 91 ⁇ ⁇ ⁇ Motor for reference probe, 92 ⁇ ⁇ ⁇ Reference lamp, 93 ⁇ , 97 ⁇ Pressure-resistant support, 98 ⁇ ⁇ ⁇ ⁇ plate-like member, 99 ⁇ ⁇ ⁇ connecting hole, 100 ⁇ ⁇ ⁇ support pin, 110 ⁇ double-leaf heat treatment device, 111 ⁇ ⁇ ⁇ Process tube, 113... Hollow body,
- the substrate processing apparatus is configured as a multi-chamber processing apparatus (hereinafter, referred to as a processing apparatus).
- a processing apparatus To form an insulating film such as silicon nitride / silicon nitride on a wafer, to form an alloy film of metal and silicon, or to activate impurity atoms implanted in the film.
- a processing apparatus To form an insulating film such as silicon nitride / silicon nitride on a wafer, to form an alloy film of metal and silicon, or to activate impurity atoms implanted in the film.
- an annealing process In the step of performing an annealing process.
- the carrier for wafer transfer is FOUP (front opening unified pod.
- FOUP front opening unified pod.
- a pod Is used.
- the processing apparatus has a first wafer transfer chamber (hereinafter, referred to as a negative pressure transfer chamber) configured in a load chamber structure that can withstand a pressure (negative pressure) lower than the atmospheric pressure.
- the housing of the negative pressure transfer chamber 10 (hereinafter referred to as a negative pressure transfer chamber housing) 11 is formed in a box shape having a hexagonal plan view and closed at both upper and lower ends.
- a wafer transfer device (hereinafter, referred to as a negative pressure transfer device) 12 for transferring the wafer W under a negative pressure is installed, and the negative pressure transfer device 12 is a scalar.
- Robot selective compliance assembly robot arm SCARA, which is configured to lift and lower while maintaining an airtight seal by an elevator 13 installed on the bottom wall of the negative H transfer chamber housing 11. I have.
- a carry-in spare room hereinafter referred to as a carry-in room 20 and a carry-out spare room (hereinafter referred to as a carry-in room). , 30) are connected adjacent to each other.
- the housing 21 of the carry-in room 20 (hereinafter, referred to as a carry-in room housing) 21 and the housing of the carry-out room 30 (hereinafter, referred to as a carry-out room housing) 31 are substantially rectangular in plan view, and both upper and lower ends are closed. It is formed in a box shape and has a load chamber structure capable of withstanding a negative pressure.
- the entrances 22 and 23 are respectively opened on the side wall of the loading room housing 21 and the side wall of the negative pressure transfer room housing 11 adjacent to each other.
- a gate valve 24 for opening and closing ports 22 and 23 is provided.
- outlets 32 and 33 are respectively opened, and the outlets 33 on the side of the negative pressure transfer chamber 10 are provided.
- the carry-in room 20 is provided with a carry-in room temporary storage stand 25, and the carry-out room 30 is provided with a carry-out room temporary place 35.
- a second wafer transfer chamber (hereinafter referred to as a positive pressure transfer chamber) having a structure capable of maintaining a pressure (positive pressure) equal to or higher than the atmospheric pressure is provided in front of the carry-in chamber 20 and the carry-out chamber 30. ) 40 are connected adjacent to each other, and the housing of the positive pressure transfer chamber 40 (hereinafter referred to as the positive pressure transfer chamber housing) 41 is a plan view. Is formed in a box shape in which the upper and lower ends are closed in a horizontally long rectangle.
- a positive pressure transfer chamber 40 is provided with a second wafer transfer device (hereinafter, referred to as a positive pressure transfer device) 42 for transferring the wafer W under a positive pressure, and the positive pressure transfer device 42 is a scalar.
- the robot is configured to be able to transfer a wafer by a robot.
- the positive pressure transfer device 42 is configured to be lifted and lowered by an elevator provided in the positive pressure transfer chamber 40, and is configured to be reciprocated in the left-right direction by a linear actuator.
- Carry-in ports 26 and 27 are respectively opened on the side wall of the carrying-in case 21 and the side wall of the positive-pressure transfer room case 41 adjacent to each other. Is provided with a gate valve 28 for opening and closing the entrances 26 and 27.
- the outlets 36 and 37 are respectively opened on the side wall of the unloading chamber housing 31 and the side wall of the positive pressure transfer chamber housing 41 adjacent to each other, and the unloading port 37 is installed on the positive pressure transfer chamber 40 side.
- a gate valve 38 that opens and closes 36 and 37 is installed.
- a notch aligning device 45 is provided on the left side of the positive pressure transfer chamber 40.
- three wafer loading / unloading ports 47, 48, and 49 are arranged on the front wall of the positive pressure transfer chamber housing 41 in a horizontal direction.
- the wafer loading / unloading ports 47, 48, and 49 are set so that the wafer W can be loaded / unloaded into / from the positive pressure transfer chamber 40.
- Pod ovens 50 are installed at the wafer loading / unloading ports 47, 48, and 49, respectively.
- the pod orbner 50 includes a mounting table 51 on which the pod P is mounted, and a cap attaching / detaching mechanism 52 for attaching and detaching the cap of the pod P mounted on the mounting table 51.
- a cap attaching / detaching mechanism 52 for attaching and detaching the cap of the pod P mounted on the mounting table 51.
- first processing unit As shown in FIG. 1, of the six side walls of the negative pressure transfer chamber housing 11, two side walls located on the back side have a first processing unit as a first processing unit. 61 and a second processing unit 62 as a second processing unit are connected adjacent to each other. First processing unit 61 Each of the second processing unit 62 and the second processing unit 62 is configured by a single-wafer type decompression RTP (Rapid Thermal Processing) device (hereinafter, referred to as an RTP device).
- RTP Rapid Thermal Processing
- the remaining two side walls of the six side walls in the negative pressure transfer chamber housing 11 have the first cooling unit 63 as a third processing unit and the fourth cooling unit 63 as a fourth processing unit.
- the second cooling unit 64 is connected to the second cooling unit 64, and the first cooling unit 63 and the second cooling unit 64 are configured to cool the wafer W that has been processed even if it is misaligned.
- the RTP device 70 includes a housing 72 having a processing chamber 71 for processing a wafer W.
- the housing 72 is a cylinder having upper and lower surfaces opened.
- a cup 72a formed into a shape, a flat plate-shaped top plate 72b closing the opening on the upper surface of the cup 72a, and a flat plate-shaped bottom plate 72c closing the opening on the lower surface of the cup 72a are combined. It is constructed in a box shape.
- the housing 72 can be formed from various metals.
- the housing 72 is configured to be water-cooled to about room temperature by a well-known circulation type cold water flow system.
- An air-cooled gas supply port 73 is provided in the middle of the side wall of the cup 72a, and an air-cooled gas exhaust port 74 is provided on the opposite side of the air-cooled gas supply port 73.
- An exhaust port 76 is provided at the upper part of the side wall of the cup 72a of the housing 72. The exhaust port 76 is connected to an exhaust device capable of exhausting the processing chamber 71 to a pressure lower than the atmospheric pressure (hereinafter referred to as a negative pressure). Have been.
- a wafer loading / unloading port 77 for loading / unloading the wafer W into / from the processing chamber 71 is provided at a position opposite to the exhaust port 76 on the side wall of the cup 72a of the housing 72. It is now opened and closed by the gate valve 78!
- a support cylinder 79 projects from the upper surface of the bottom plate 72c, and a reflective plate 80 is horizontally installed on the upper end surface of the support cylinder 79.
- a first heating lamp group 81 and a second heating lamp group 82 composed of a plurality of heating lamps are arranged in order from the bottom, and are horizontally installed.
- the first heating lamp group 81 and the second heating lamp group 82 are horizontally supported by a first column 83 and a second column 84, respectively.
- the first heating lamp group 81 and the second heating lamp group 82 include a plurality of heating lamps (tungsten halogen linear lamps) as heating sources arranged in parallel with each other. It is constructed to be erected horizontally! Puru.
- the first heating lamp group 81 and the second heating lamp group 82 are connected in parallel to the controller for each of the first zone and the fourth zone, and the controller is connected to a controller (not shown) to which a radiation thermometer described later is connected. ) Is configured to perform feedback control.
- the power supply wires 85 of the first heating lamp group 81 and the second heating lamp group 82 pass through the first support column 83 and the second support column 84 and are bowed out.
- the heater assembly 81 which includes the first heating lamp group 81, the second heating lamp group 82, and the controller, also emits radiant heat rays (light) having a radiation peak of 0.95 m and radiates a large amount of heat to the central zone. It is set so as to exhibit a heating profile to be applied to the peripheral zone rather than the peripheral zone.
- the cooling characteristics of the electrode portions of the first heating lamp group 81 and the second heating lamp group 82 are more advantageous in the atmospheric pressure atmosphere, the life of the heating lamp groups 81 and 82 is taken into consideration, and the heater assembly installation space 94 is considered. Is set to atmospheric pressure.
- a raw material gas supply pipe 86 and an inert gas supply pipe 87 are connected to the top plate 72b so as to communicate with the processing chamber 71, respectively! RU
- a radiation thermometer probe 88 as a temperature measuring device is inserted into the top plate 72b so as to face the upper surface of the ⁇ and W, and the radiation thermometer measures the temperature based on the light detected by the probe 88. Are sequentially transmitted to the controller.
- An emissivity measuring device 89 for measuring the emissivity of the wafer W in a non-contact manner is installed at another place of the top plate 72b.
- the emissivity measuring device 89 includes a reference probe 90, and the reference probe 90 is configured to be rotated in a vertical plane by a reference probe motor 91.
- a reference lamp 92 for irradiating the reference light is installed so as to face the tip of the reference probe 90.
- the reference probe 90 is optically connected to the photon density measuring device, and the photon density measuring device compares the photon density from the wafer W with the photon density of the reference light from the reference lamp 92 to measure the measurement temperature. Is to be calibrated.
- the processing chamber 71 includes a processing space 93 as a first space and a heating space as a second space.
- a partition panel 95 for partitioning into a ta assembly installation space 94 is installed horizontally with its periphery fixed to a cup 72a by a press ring 72d.
- the external shape of the partition panel 95 is formed in a square flat plate shape as shown in FIG.
- the partition panel 95 is configured by accommodating the pressure-resistant support 97 shown in FIG. 5 in the hollow portion of the hollow body 96 shown in FIG.
- the inside of the hollow body 96 of the partition panel 95 is preliminarily reduced to a lower pressure than the pressure of the processing space 93.
- the hollow body 96 and the pressure-resistant support 97 are made of quartz (SiO 2) and are formed transparently.
- the carrier 97 is not fixed.
- the thickness t of the main surface wall of the hollow body 96 is set to 10 mm or more.
- the inside of the partition panel 95 can be evacuated by evacuating the exhaust port (not shown) of the hollow body 96 and sealing the exhaust port. By maintaining the reduced pressure by sealing after the evacuation, the inside of the partition panel 95 does not have to be constantly evacuated by a pump (not shown).
- the pressure-resistant support 97 has a plurality of plate-shaped members 98 connected in a cross-girder shape, and a communication hole 99 is opened at an appropriate position of each plate-shaped member 98. It has been done. Since the pressure-resistant support 97 is accommodated in the hollow portion of the hollow body 96, even if the inside of the partition panel 95 is partitioned into a plurality of small sections by the plate-shaped member 98, the sections are communicated with each other by the connection holes 99. Due to this state, the inside of the partition panel 95 can be decompressed throughout.
- a plurality of support pins 100 protrude from the center of the upper surface of the partition panel 95, and these support pins 100 horizontally support the wafer W while floating the wafer W from the upper surface of the partition panel 95. It is set to be.
- the pod P that has been transported is placed on the loading table 51 of the pod orbner 50 by receiving the in-process transport device force.
- Pod P cap is cap
- the wafer is removed by the attachment / detachment mechanism 52, and the wafer loading / unloading port of the pod P is opened.
- the positive pressure transfer device 42 installed in the positive pressure transfer chamber 40 picks up the wafer W from the pod P through the wafer loading / unloading port 47, and loads the wafer W into the loading chamber 20. , 27, and the wafer W is transferred to the temporary loading table 25 for the loading room.
- the inlets 22 and 23 on the negative pressure transfer chamber 10 side are closed by the gate valve 24, and the negative pressure in the negative pressure transfer chamber 10 is maintained.
- the loading ports 26 and 27 on the positive pressure transfer chamber 40 side are closed by the gate valve 28, and the loading chamber 20 is evacuated (not shown). As a result, the air is exhausted to a negative pressure.
- the loading ports 22 and 23 on the negative pressure transfer chamber 10 side are opened by the gate valve 24 and the wafer loading and loading of the first processing unit 61 is performed.
- the outlet 65 and the wafer loading / unloading port 77 are opened by the gate valve 78 (see FIG. 2).
- the negative pressure transfer device 12 of the negative pressure transfer chamber 10 picks up the wafer W from the transfer room temporary storage table 25 through the transfer ports 22 and 23 and loads the wafer W into the negative pressure transfer chamber 10.
- the negative pressure transfer device 12 transports the wafer W to the wafer loading / unloading port 65 of the first processing unit 61 and loads the wafer W from the wafer loading / unloading ports 65 and 77 into the processing chamber 71 of the RTP device 70 as the first processing unit 61 ( The wafer is loaded onto the support pins 100 of the partition panel 95 installed in the processing chamber 71.
- the wafer loading / unloading port 77 When the wafer loading / unloading port 77 is opened by the gate valve 78, the wafer W transported by the negative pressure transfer device 12 is transferred between the upper ends of the plurality of support pins 100. When the negative pressure transfer device 12 that has transferred the wafer and the W to the support pins 100 retreats, the wafer loading / unloading port 77 is closed by the gate valve 78. When the processing chamber 71 is closed, the processing space 93 of the processing chamber 71 is exhausted to a predetermined pressure by the exhaust port 76.
- the raw material gas is supplied to the processing space 93 by the raw gas supply pipe 86, and an inert gas such as nitrogen gas is supplied by the inert gas supply pipe 87.
- an inert gas such as nitrogen gas is supplied by the inert gas supply pipe 87.
- Raw material gas The processing gas supplied from the supply pipe 86 reacts with the wafer W in the processing space 93. The remaining gas is exhausted through outlet 76.
- wafer W held by support pins 100 is heated by first heating lamp group 81 and second heating lamp group 82.
- air-cooled gas such as nitrogen gas flows through the heater-assembly installation space 94 through the air-cooled gas supply port 73 and the air-cooled gas exhaust port 74.
- the circulation of the air-cooled gas cools the electrode portions of the first heating lamp group 81 and the second heating lamp group 82, thereby extending the life of the first heating lamp group 81 and the second heating lamp group 82. it can.
- the temperatures of the ueno and W are sequentially measured by the probe 88 of the radiation thermometer and are sequentially transmitted to the controller.
- the controller executes feedback control based on the measurement results of the radiation thermometer.
- the measurement temperature is calibrated based on the data from the emissivity measurement device 89.
- the wafer W is uniformly heated throughout by the first heating lamp group 81 and the second heating lamp group 82.
- the film formation rate (film formation speed) due to the reaction of the processing gas with the wafer W depends on the in-plane temperature distribution of the wafer W, if the in-plane temperature distribution of the wafer W is uniform over the entire surface, In addition, the in-plane film thickness distribution of the film formed on the wafer W is uniform over the entire surface of the wafer W.
- the processing space 93 is exhausted to a predetermined negative pressure by the exhaust port 76. Subsequently, the wafer loading / unloading port 77 is opened by the gate valve 78, and the processed wafer W supported by the support pins 100 is picked up by the negative pressure transfer device 12, and is transferred from the wafer loading / unloading port 77 to the processing chamber 71. It is carried out.
- the partition panel 95 divides the processing chamber 71 into an upper processing space 93 and a lower heater assembly installation space 94, so that the processing space 93 is depressurized and air-cooled gas is supplied to the heater assembly.
- a force due to a pressure difference acts on the partition panel 95.
- the partition panel 95 in which the hollow body 96 and the pressure-resistant support 97 are not fixed, if the hollow body 96 is not decompressed, the partition panel 95 is damaged for the following reason. . That is, as shown in FIG. 6A, a force Fb for pressing the lower wall 96b against the lower surface of the pressure-resistant support 97 acts on the lower wall 96b of the hollow body 96 that is in contact with the heater assembly installation space 94. There is no problem. On the other hand, a force Fa is applied to the upper wall 96a of the hollow body 96 that is in contact with the processing space 93 to push the upper wall 96a away from the upper surface force of the pressure-resistant support 97, so that the upper wall 96a is damaged.
- the hollow body 96 and the pressure-resistant support 97 are fixedly attached, but the internal pressure of the hollow body 96 is reduced to be lower than the pressure of the processing space 93. Therefore, the hollow body 96 is not damaged.
- a force Fb for pressing the lower side wall 96b against the lower surface of the pressure-resistant support 97 acts on the lower side wall 96b of the hollow body 96 which is in contact with the heater assembly installation space 94.
- the upper side wall 96 a is also pressed against the upper surface of the pressure-resistant support 97 on the upper side wall 96 a in contact with the processing space 93 of the hollow body 96.
- the contact force Fc acts, so there is no problem.
- the partition panel 95 since the hollow body 96 is appropriately reinforced by the pressure-resistant support 97, the partition panel 95 exhibits an intended pressure-resistant strength. Also, since the partition panel 95 can be constructed without fixing the hollow body 96 and the pressure-resistant support 97 to each other, it is possible to omit processing such as welding, which is extremely difficult, and to provide a partition panel. The manufacturing cost of 95 can be reduced.
- the film forming step is completed in the RTP device 70, that is, the first processing unit 61 as described above, as shown in FIG.
- the wafer 1 is picked up by the negative pressure transfer device 12 and is unloaded (wafer unloading) from the wafer loading / unloading port 65 of the first processing unit 61 into the negative pressure transfer chamber 10 maintained at a negative pressure.
- the wafer loading / unloading port 67 of the first cooling unit 63 is opened by the gate valve 67A.
- the negative pressure transfer device 12 loads the wafer W unloaded from the first processing unit 61 into the processing chamber (cooling chamber) of the first cooling unit 63 through the wafer loading / unloading port 67. First, it is transferred to the substrate mounting table in the cooling chamber.
- the wafer loading / unloading port 67 of the processing chamber of the first cooling unit 63 is closed by the gate valve 67A.
- the wafer loading / unloading port 67 is closed, the film-formed wafer loaded into the first cooling cut 63 is cooled.
- the cooled wafer W is picked up from the first cooling unit 63 by the negative pressure transfer device 12, and the negative pressure maintained at the negative pressure. It is carried out to the transfer room 10.
- the carry-out port 33 is opened by the gate valve.
- the negative pressure transfer device 12 transports the wafer W unloaded from the first cooling unit 63 to the unloading port 33 of the negative pressure transfer chamber 10 and unloads the wafer W to the unloading chamber 30 through the unloading port 33. Transfer to temporary storage 35.
- the outlets 32, 33 of the unloading chamber 30 are closed by the gate valve 34, the outlets 36, 37 of the unloading chamber 30 on the positive pressure transfer chamber 40 side are opened by the gate valve 38, and the unloading chamber 30 is opened. Is released.
- the wafer loading / unloading port 48 corresponding to the unloading chamber 30 of the positive pressure transfer chamber 40 is opened by the pod opener 50, and the empty pod P placed on the loading table 51 is opened. Is opened by the pod oven 50.
- the positive pressure transfer device 42 of the positive pressure transfer chamber 40 picks up the wafer W from the temporary storage table 35 for the unloading chamber through the transfer port 37 and unloads the wafer W to the positive pressure transfer chamber 40. It is stored (charged) in pod P through 40 wafer loading / unloading ports 48.
- the cap of the pod P is attached to the wafer entrance by the cap attaching / detaching mechanism 52 of the pod orbner 50, and the pod P is closed.
- the closed pod P is also transported to the next process by the intra-process transport device from the mounting table 51.
- the pressure in the processing space may be lower than the pressure in the hollow part.
- the pressure difference between the pressure in the processing space and the pressure in the hollow portion increases, there is a fear that the upper wall 96a of the hollow body may be damaged. Therefore, in this case, if only the portion of the pressure-resistant support on the processing space side is fixed to the hollow body, breakage or the like can be prevented.
- FIG. 7 is a side sectional view showing a two-wafer heat treatment apparatus used in the treatment apparatus according to the second embodiment of the present invention.
- FIG. 8 shows a hollow body of the process tube, (a) is a side sectional view, and (b) is a sectional view taken along the line bb of (a).
- FIG. 9 is a perspective view showing the pressure-resistant support.
- the present embodiment is different from the above-described embodiment in that both the first processing unit 61 and the second processing unit 62 in the processing apparatus shown in FIG. Each of them is constituted by a heat treatment device.
- the two-wafer heat treatment apparatus 110 includes a process tube 112 forming a processing chamber 111.
- the process tube 112 has a flat rectangular shape having flanges at both ends. It is formed in a cylindrical body and erected horizontally.
- the process tube 112 includes a hollow body 113 shown in FIG. 8 and a pressure-resistant support 114 shown in FIG.
- the hollow body 113 is formed in a flat quadrangular cylindrical shape having flanges at both ends, and the cylindrical portion is formed in a double hollow shape with inner and outer portions.
- the appearance of the pressure-resistant support 114 is substantially equal to the hollow shape formed in the cylindrical portion of the hollow body 113.
- the pressure-resistant support 114 is housed in the hollow portion of the hollow body 113.
- the pressure in the hollow portion of the hollow body 113 in which the pressure-resistant support 114 is accommodated is reduced to a pressure lower than the pressure in the processing chamber 111.
- the hollow body 113 and the pressure-resistant support 114 are transparently formed using quartz (SiO 2).
- the inside of the process tube 112 can be preliminarily depressurized by sealing the exhaust port after the evacuation port (not shown) of the hollow body 113 is evacuated. By maintaining the reduced pressure by sealing after the evacuation, the inside of the process tube 112 does not have to be constantly evacuated by a pump (not shown).
- the pressure-resistant support 114 is formed by connecting a plurality of plate-like members 115 in a cross-girder shape, and a communication hole 116 is formed at an appropriate position of each plate-like member 115. It has been established. Since the pressure-resistant support 114 is accommodated in the hollow portion of the hollow body 113, even if the inside of the process tube 112 is partitioned into a plurality of small sections by the plate-like member 115, the respective sections communicate with each other through the connection holes 116. The hollow body 11 The interior of 3 can be depressurized throughout.
- a holding table 120 for holding two wafers W is installed in the processing chamber 111 of the process tube 112, and gas introduction flanges 121 and 122 as a manifold are provided at both ends of the process tube 112, respectively. Have been abutted.
- a wafer loading / unloading port 123 is opened so as to connect the processing chamber 111 with the negative pressure transfer chamber 10 shown in FIG.
- the wafer loading / unloading port 123 is opened and closed by a gate valve 124.
- the other gas introduction flange (hereinafter, referred to as the rear flange) 122 has an opening 125 and a door 126 [closed by this!].
- Gas supply pipes 127 and 128 and exhaust pipes 129 and 130 are connected to the front flange 121 and the rear flange 122, respectively.
- the gas supply pipes 127 and 128 are provided with flow control devices for controlling the flow rate of gas supplied to the processing chamber 111, and the exhaust pipes 129 and 130 control the pressure of the processing chamber 111.
- a pressure control device is provided.
- An upper heater 131 and a lower heater 132 are provided above and below the process tube 112, respectively.
- the upper heater 131 and the lower heater 132 control the processing chamber 111 uniformly or at a predetermined temperature gradient under the control of a temperature controller (not shown). It is configured to heat.
- the outside of the upper heater 131 and the lower heater 132 is covered with a heat insulating tank 133.
- the processing chamber 111 is evacuated to a predetermined pressure by the exhaust pipes 129 and 130.
- the processing gas is supplied to the processing chamber 111 through supply pipes 127 and 128.
- the processing gas supplied from the supply pipes 127 and 128 to the processing chamber 111 reacts with the wafer W, and the remaining gas is exhausted by the exhaust pipes 129 and 130.
- wafer W held by holding table 120 is heated by upper heater 131 and lower heater 132. Heated. At this time, the wafer W is uniformly heated by the upper heater 131 and the lower heater 132 throughout.
- the film formation rate (deposition rate) due to the reaction of the processing gas with the wafer W depends on the in-plane temperature distribution of the wafer W. Therefore, if the in-plane temperature distribution of the wafer W is uniform over the entire surface, the wafer W In-plane film thickness distribution of the film formed on the wafer
- the processing chamber 111 is exhausted to a predetermined negative pressure by the exhaust pipes 129 and 130.
- the wafer loading / unloading port 123 is opened by the gate valve 124, and the processed wafer W supported by the holding table 120 is picked up by the negative pressure transfer device 12, and is moved from the wafer loading / unloading port 123 to the processing chamber. It is carried out of 111.
- the process tube 112 may be damaged if the hollow body 113 is not decompressed. Occurs in
- a force Fb for pressing the outer wall 113b against the lower surface of the pressure-resistant support 114 acts on the outer wall 113b of the hollow body 113 which is in contact with the atmosphere 117.
- a force Fa that pushes the inner wall 113a away from the pressure-resistant support 114 acts on the inner wall 113a of the hollow body 113 that is in contact with the processing chamber 111, so that the inner wall 113a is damaged.
- the hollow body 113 and the pressure-resistant support 114 are fixed, but the internal pressure of the hollow body 113 is reduced to be lower than the pressure of the processing chamber 111. The damage of the hollow body 113 does not occur.
- a force Fb for pressing the outer wall 113b against the pressure-resistant support 114 acts on the outer wall 113b of the hollow body 113 which is in contact with the atmosphere 117, so that there is no problem. .
- the inner wall 113a of the hollow body 113 that is in contact with the processing chamber 111 is also pressure-resistant. Since the force Fc for pressing against the outer surface of the holding body 114 acts, there is no problem similarly. Therefore, since the hollow body 113 is appropriately reinforced by the pressure-resistant support 114, the process tube 112 exhibits an intended pressure-resistant strength.
- the process tube 112 can be constructed without fixing the hollow body 113 and the pressure-resistant support 114 to each other, it is possible to omit processing such as welding, which is extremely difficult, and to reduce the process time. The manufacturing cost of the tube 112 can be reduced.
- the thickness of the wall member of the process tube 112 since it is not necessary to set the thickness of the wall member of the process tube 112 to a large value, attenuation of light (heat ray) and heat accumulation of the process tube 112 itself can be reduced, and as a result, the upper heater 131 and the The thermal efficiency of the lower heater 132 can be improved.
- the process tube 112 since the hollow body 113 and the pressure-resistant support 114 are not fixed, excessive thermal stress acts on the hollow body 113. Therefore, even under a high-temperature heat treatment, the process tube 112 is not damaged.
- the thickness of the wall of the hollow body 113 can be set to be thin, so that an increase in the weight of the process tube 112 can be reduced and It is possible to prevent the attenuation of the heating wire of the heater and the deterioration of the heating and cooling rate.
- the pressure in the processing chamber of the process tube may be lower than the pressure in the hollow portion of the hollow body of the process tube.
- the pressure difference between the pressure in the chamber and the pressure in the hollow portion increases, there is a fear that the inner side wall 113a of the hollow body may be damaged. Therefore, in this case, if only the processing chamber side portion of the pressure-resistant support is fixed to the hollow body, breakage and the like can be prevented.
- the wall of the negative pressure transfer chamber housing may be composed of a hollow body and a pressure-resistant support, and the hollow portion of the hollow body may be reduced to a pressure lower than the pressure of the negative pressure transfer chamber. ⁇ .
- the substrate is not limited to a wafer, and may be a glass substrate or an array substrate in a manufacturing process of an LCD device (liquid crystal display device).
- LCD device liquid crystal display device
- the present invention provides other heat treatment apparatuses, plasma processing apparatuses, and dry etching apparatuses.
- the present invention can be applied to all processing devices.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Chemical Vapour Deposition (AREA)
- Drying Of Semiconductors (AREA)
Abstract
Description
Claims
Priority Applications (1)
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JP2005516973A JP4679369B2 (ja) | 2004-01-13 | 2004-12-08 | 基板処理装置および半導体装置の製造方法 |
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JP2004-005832 | 2004-01-13 | ||
JP2004005832 | 2004-01-13 |
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PCT/JP2004/018253 WO2005069359A1 (ja) | 2004-01-13 | 2004-12-08 | 基板処理装置および半導体装置の製造方法 |
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WO (1) | WO2005069359A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009078351A1 (ja) * | 2007-12-14 | 2009-06-25 | Ulvac, Inc. | チャンバ及び成膜装置 |
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JPH05326530A (ja) * | 1992-03-17 | 1993-12-10 | Sharp Corp | 化合物半導体基板の熱処理方法 |
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JP2000114196A (ja) * | 1998-08-06 | 2000-04-21 | Ushio Inc | 光照射式加熱装置の冷却構造 |
JP2000133600A (ja) * | 1998-10-27 | 2000-05-12 | Dainippon Screen Mfg Co Ltd | 熱処理装置および基板温度計測方法 |
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JPS61285713A (ja) * | 1985-06-13 | 1986-12-16 | Mitsubishi Electric Corp | 熱処理装置 |
JPH04652U (ja) * | 1990-03-30 | 1992-01-07 | ||
JPH10242066A (ja) * | 1997-02-21 | 1998-09-11 | Kokusai Electric Co Ltd | 反応容器 |
JP3404023B2 (ja) * | 2001-02-13 | 2003-05-06 | 株式会社半導体先端テクノロジーズ | ウエハ熱処理装置及びウエハ熱処理方法 |
JP3916040B2 (ja) * | 2001-07-25 | 2007-05-16 | 東京エレクトロン株式会社 | 反応管及び熱処理装置 |
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- 2004-12-08 WO PCT/JP2004/018253 patent/WO2005069359A1/ja active Application Filing
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JPH05121342A (ja) * | 1991-10-28 | 1993-05-18 | Tokyo Electron Sagami Ltd | 熱処理装置 |
JPH05326530A (ja) * | 1992-03-17 | 1993-12-10 | Sharp Corp | 化合物半導体基板の熱処理方法 |
JPH1012517A (ja) * | 1996-06-20 | 1998-01-16 | Dainippon Screen Mfg Co Ltd | 基板熱処理装置 |
JPH10270372A (ja) * | 1997-03-21 | 1998-10-09 | Kokusai Electric Co Ltd | 半導体製造装置の熱処理炉 |
JP2000114196A (ja) * | 1998-08-06 | 2000-04-21 | Ushio Inc | 光照射式加熱装置の冷却構造 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2009078351A1 (ja) * | 2007-12-14 | 2009-06-25 | Ulvac, Inc. | チャンバ及び成膜装置 |
TWI404158B (zh) * | 2007-12-14 | 2013-08-01 | Ulvac Inc | Processing chamber and film forming device |
US8677925B2 (en) | 2007-12-14 | 2014-03-25 | Ulvac, Inc. | Chamber and film forming apparatus |
Also Published As
Publication number | Publication date |
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JP4679369B2 (ja) | 2011-04-27 |
JPWO2005069359A1 (ja) | 2007-12-27 |
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