WO2004012251A1 - プラズマ処理装置およびプラズマ処理方法 - Google Patents
プラズマ処理装置およびプラズマ処理方法 Download PDFInfo
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- WO2004012251A1 WO2004012251A1 PCT/JP2003/009695 JP0309695W WO2004012251A1 WO 2004012251 A1 WO2004012251 A1 WO 2004012251A1 JP 0309695 W JP0309695 W JP 0309695W WO 2004012251 A1 WO2004012251 A1 WO 2004012251A1
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- WIPO (PCT)
- Prior art keywords
- plasma
- plasma processing
- ignition
- temperature
- slot electrode
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
- H01J37/32211—Means for coupling power to the plasma
- H01J37/3222—Antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
Definitions
- the present invention relates to a plasma processing apparatus that can be suitably used when performing plasma processing on a substrate for an electronic device in order to manufacture an electronic device or the like.
- the plasma processing apparatus of the present invention can be widely and generally applied to the production of semiconductor devices, electronic devices such as semiconductor devices, and liquid crystal devices, but here, for convenience of explanation, the background art of semiconductor devices is described. An example will be described.
- a parallel plate type plasma source has been widely used in a plasma processing apparatus for etching a silicon oxide film.
- This parallel plate type plasma source is characterized in that the plasma generated thereby has a high energy. On the contrary, the high energy of the plasma may be inconvenient.
- the separation of the etching gas tends to proceed remarkably.
- selection of a silicon oxide film and a resist is preferable.
- Sex has to be relatively low.
- An object of the present invention is to provide a plasma processing apparatus which has solved the above-mentioned disadvantages of the prior art.
- Another object of the present invention is to provide a plasma processing apparatus which can provide plasma with higher selectivity (relatively low plasma energy) which can be suitably used in the production of an electronic device.
- the plasma processing apparatus of the present invention is based on the above findings, and more specifically, a plasma processing chamber for performing plasma processing on an object to be processed, and a slot for guiding a microphone mouth wave for the plasma processing. And a plasma source for igniting the plasma. Is what you do. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a schematic cross-sectional view showing the entire configuration of an exemplary microwave plasma processing apparatus according to an exemplary embodiment of the present invention.
- FIG. 2 is a schematic cross-sectional view showing an example of a conventional parallel plate type plasma processing apparatus.
- FIG. 3 is a graph showing an example in which the plasma density of a conventional parallel plate type plasma processing apparatus is compared with that of RLSA plasma which can be suitably used in the present invention.
- FIG. 4 is a flowchart showing a sequence example of ignition and plasma generation suitably usable in the present invention.
- FIG. 5 is a schematic plan view for explaining a specific configuration example of a slit electrode usable in the microwave plasma processing apparatus shown in FIG.
- FIG. 6 is a schematic block diagram showing a configuration of a first temperature control device and a temperature control plate that can be used in the microwave plasma processing device shown in FIG.
- FIG. 7 is a partially enlarged cross-sectional view for explaining the third temperature control device 95.
- FIG. 8 is a partially enlarged cross-sectional view showing a modification of the temperature control plate of the microphone mouth-wave plasma device shown in FIG.
- FIG. 9 is a schematic sectional view showing another configuration of an energy source for generating plasma for ignition which can be suitably used in the present invention.
- FIG. 10 is a schematic cross-sectional view showing another configuration of an ignition plasma generating energy source (constituting a remote plasma source) that can be suitably used in the present invention.
- a plasma processing apparatus includes a plasma processing chamber for performing plasma processing on an object to be processed, a slot electrode for guiding a microphone mouth wave for the plasma processing, and a plasma electrode for igniting the plasma. Emit plasma It has at least a source of energy to produce.
- an energy source for generating ignition plasma for facilitating ignition of plasma based on the microphone mouth wave guided by the slot electrode is provided.
- the plasma source for ignition By arranging the plasma source for ignition in this way, if it is not always easy to ignite the plasma based on the microwave guided by the above-mentioned slot electrode, this ignition plasma generation By activating the energy source, the ignition of plasma based on the microwave guided by the slot electrode can be promoted.
- the type, size, location, number, etc. of the ignition plasma generation energy source (and / or the ignition plasma source).
- the plasma processing apparatus of the present invention may have at least an energy source for generating ignition plasma. That is, as long as the plasma ignition based on the microwave guided by the slot electrode can be promoted, the energy source for generating the ignition plasma in the present invention is the microphone guided by the slot electrode.
- the “energy source” itself (for example, a coil) may be disposed inside or near the plasma processing chamber where the plasma based on mouth waves is to be generated.
- An additional plasma source including a lugi source for example, a plasma source for generating a remote plasma may be used.
- the ignition plasma generation energy source when the ignition plasma generation energy source is disposed inside or near the plasma processing chamber, the ignition plasma generation energy source is based on the microphone microwave guided by the slot electrode.
- the plasma processing chamber is disposed along a circumferential side wall constituting the plasma processing chamber.
- the gas in the plasma processing chamber is supplied by energy supplied from the ignition plasma generation energy source (for example, a coil disposed along a circumferential side wall of the plasma processing chamber).
- the plasma is turned into a plasma to generate an ignition plasma. Based on the generation of the ignition plasma (in the same processing chamber where the plasma based on the microwave guided by the slot electrode is to be generated), The generation of plasma based on microwaves guided by the slot electrode is promoted.
- the ignition plasma generation energy source may itself constitute a plasma source (for example, a remote plasma source).
- the additional plasma source is preferably an ICP plasma source including a tubular structure for flowing a gas for plasma generation, and a coil disposed around the tubular structure.
- an energy source for generating an ignition plasma for example, a remote plasma placed outside a plasma processing chamber
- a gas supplied into a tubular structure constituting a remote plasma source When the energy is supplied from the source, the gas for generating the ignition plasma is turned into a plasma and the ignition plasma is generated. Then, based on the generation of the ignition plasma, the generation of the plasma based on the microphone mouth wave guided by the slot electrode is promoted in the plasma processing chamber.
- the characteristics of the plasma that can be suitably used and should be given based on the slot electrode are as follows.
- Plasma density uniformity Soil 5% or less
- the electron temperature is lowered and increased by irradiating microwaves through a planar antenna member (referred to as “RLSA”) having a plurality of slots.
- RLSA planar antenna member
- a dense plasma can be formed.
- plasma damage is small, and a highly reactive process can be performed even at a low temperature.
- FIG. 1 is a schematic cross-sectional view showing one embodiment of the plasma processing apparatus of the present invention.
- FIG. 2 shows an outline of a conventional parallel plate type etching apparatus
- FIG. 3 shows a conventional parallel plate etching apparatus. The relationship between the plasma density and the plasma energy between the flat plate plasma and the RLSA plasma is shown.
- the ignition-related plasma generation and shutdown sequence and / or the microwave-based (main) plasma are used.
- Sequence for ignition Not done. Specific sequences that can be suitably used in the present invention are as follows.
- Ignition plasma is generated by starting supply of gas for generating ignition plasma and start of energy supply from an ignition energy source; By starting gas supply for generating plasma and starting to supply energy to the slot electrode for generating plasma based on the slot electrode, the plasma based on the slot electrode is generated. Sequence to generate.
- FIG. 4 shows an example of an ignition sequence that can be suitably used in the present invention. An example in which the opening in FIG. 4 is used for an etching process will be described.
- RLSA plasma when RLSA plasma is used for an etching process, its ignition tends to be somewhat difficult at a low pressure. In the case of an etcher, a process pressure of about 10 mTorr is often required. However, under these pressures, the normal RLSA plasma ignition method (ie, simply supplying microwaves from the RLSA member into the plasma processing chamber) ignites the plasma. There may be relatively many cases where none exist. Therefore, when the ignition plasma source (ICP plasma source in this example) is operated to generate ICP plasma, and then RLSA plasma is ignited, RLSA plasma suitable for various processes can be extremely easily obtained. Ignite.
- FIG. 1 is a schematic block diagram of the microwave plasma apparatus 100.
- the microwave plasma apparatus 100 of this embodiment is connected to a microwave source 10, a reaction gas supply nozzle 50 and a vacuum pump 60, and includes an antenna housing member 20 and a first temperature control device 30. , A processing chamber 40, and a second temperature control device 70.
- the microwave source 10 is composed of, for example, a magnetron and can generate a microwave (for example, 5 kW) of usually 2.45 GHz (the microwave is then converted to a mode converter (not shown)). The transmission mode is converted to TM, TE, or TEM mode by).
- a microwave for example, 5 kW
- the transmission mode is converted to TM, TE, or TEM mode by).
- the isolator ⁇ ⁇ that absorbs the reflected wave of the generated microwave returning to the magnetron, and the EH tuner or stub tuner for matching with the load side are omitted.
- the antenna housing member 20 houses the wavelength shortening member 22, and the slot electrode 24 is configured as a bottom plate of the antenna housing member 20 in contact with the wavelength shortening member 22.
- the antenna housing member 20 is made of a material having a high thermal conductivity (for example, aluminum), and is in contact with the temperature control plate 32 as described later. Therefore, the temperature of the antenna housing member 20 is set to substantially the same temperature as the temperature of the temperature control plate 32.
- an ignition plasma source for example, an ICP plasma source 110 is arranged along a circumferential side wall constituting the plasma processing chamber.
- the wavelength shortening member 22 As the wavelength shortening member 22, a material having a predetermined dielectric constant is selected in order to shorten the wavelength of the microwave. In order to make the density of the plasma introduced into the processing chamber 40 uniform, it is necessary to form many slits 25 in a slot electrode 24 described later.
- the wavelength shortening member 22 has a function of enabling a large number of slits 25 to be formed in the slot electrode 24. It is a wavelength shortening member 2 2, for example, alumina Ceramic A 1 2 O 3, S i N, can be used A 1 N.
- the slot electrode 24 is screwed to the wavelength shortening member 22 and is made of, for example, a cylindrical copper plate having a diameter of 50 cm and a thickness of 1 mm or less. As shown in FIG. 5, the slot electrode 24 is slightly outward from the center, for example, starting from a position about several centimeters away, and a large number of slits 25 are gradually wound in a spiral shape. It is formed toward.
- the slit 25 is spiraled twice.
- the slit group is formed by arranging a pair of slits 25A and 25B, which are a pair of slits 25A and 25B, which are arranged slightly apart in a substantially T shape as described above. Is formed.
- the length L1 of each of the slits 25A and 25B is set within a range of approximately 1/2 to 1Z16 of the guide wavelength of the microwave, and the width is about 1 to 3 mm.
- the distance L2 between the outer ring and the inner ring of the slit spiral is set to be approximately the same as the guide wavelength ⁇ , though there are slight adjustments. That is, the length L 1 of the slit is set within the range shown by the following equation.
- the slits 25A and 25B By forming the slits 25A and 25B in this way, it is possible to form a uniform distribution of microwaves in the processing room 40. A case where a microphone having a width of about several mm along with the outer periphery of the disk-shaped slot electrode 24 outside the spiral slit and a microphone having a width of about several mm is formed to prevent the reflection of the mouth wave power. There is also. As a result, the antenna efficiency of the slot electrode 24 is increased.
- the slit pattern of the slot electrode 24 of the present embodiment is merely an example, and an electrode having an arbitrary slit shape (for example, an L-shape) is used as the slot electrode. Can do Needless to say.
- the first temperature control device 30 is connected to the antenna storage member 20.
- the first temperature control device 30 has a function of controlling the temperature change of the antenna housing member 20 and the components in the vicinity of the antenna housing member 20 due to micro heat within a predetermined range.
- the first temperature control device 30 has a temperature control plate 32, a sealing member 34, a temperature sensor 36 and a heater device 38, and Cooling water is supplied from water source 39.
- the temperature of the cooling water supplied from the water source 39 is preferably constant.
- the temperature control plate 32 a material having a high thermal conductivity, such as copper, for example, and which is easy to process the flow path 33 is selected.
- the flow path 33 can be formed, for example, by vertically and horizontally penetrating a rectangular temperature control plate 32 and screwing a sealing member 34 such as a screw into a through hole.
- a sealing member 34 such as a screw into a through hole.
- each of the temperature control plate 32 and the flow path 33 can have an arbitrary shape.
- other types of refrigerants alcohol, galden, chlorofluorocarbon, etc. can be used instead of cooling water.
- the temperature sensor 36 a known sensor such as a PTC thermistor or an infrared sensor can be used. Although a thermocouple can also use the temperature sensor 36, it is preferable that the thermocouple be configured so as not to be affected by microwaves.
- the temperature sensor 36 may or may not be connected to the flow path 33. Alternatively, the temperature sensor 36 may measure the temperature of the antenna housing member 20, the wavelength shortening member 22, and the temperature of the Z or slot electrode 24.
- the heater device 38 is configured, for example, as a heater wire wound around a water pipe connected to the flow path 33 of the temperature control plate 32. By controlling the magnitude of the current flowing through the heater wire, the temperature of the water flowing through the flow path 33 of the temperature control plate 32 can be adjusted. Temperature control plate 3 2 is heat conductive Since the rate is high, the temperature can be controlled to be substantially the same as the temperature of the water flowing through the flow path 33.
- the temperature control plate 32 is in contact with the antenna housing member 20, and the antenna housing member 20 and the wavelength shortening member 22 have high thermal conductivity. As a result, the temperature of the wavelength shortening member 22 and the temperature of the slot electrode 24 can be controlled by controlling the temperature of the temperature control plate 32.
- the wavelength shortening member 22 and the slot electrode 24 can be shortened by applying the power of the microwave source 10 (for example, 5 kW) for a long time.
- the temperature of the electrode itself increases due to power loss in the member 22 and the slot electrode 24.
- the wavelength shortening member 22 and the slot electrode 24 are thermally expanded and deformed.
- the optimum slit length changes due to thermal expansion, and the overall plasma density in the processing chamber 40 described later decreases or the plasma density is partially concentrated. I do. If the overall plasma density decreases, the processing speed of the semiconductor wafer W changes. As a result, when the plasma processing is controlled in terms of time, the processing is stopped after a predetermined time (for example, 2 minutes) has elapsed, and the semiconductor wafer W is taken out of the processing chamber 40. If the plasma density decreases, the desired processing (etching depth or film thickness) may not be formed on the semiconductor wafer w. If the plasma density is partially concentrated, the processing of the semiconductor wafer W will be partially changed. Thus, if the slot electrode 24 is deformed due to a change in temperature, the quality of the plasma processing is reduced.
- the temperature control plate 32 is not provided, the material of the wavelength shortening member 22 and the material of the slot electrode 24 are different, and since both are screwed, the slot electrode 24 is warped. Become. It will be understood that the quality of the plasma treatment is also reduced in this case. On the other hand, the slot electrode 24 does not deform even if it is disposed at a high temperature if the temperature is constant. In a plasma processing apparatus, if water is present in a liquid or mist state in the processing chamber 40, it will be mixed as an impurity into the film of the semiconductor wafer W, so the temperature must be raised as much as possible. .
- the temperature control plate 3 2 (that is, the slot electrode 24) is controlled, for example, to be about ⁇ 5 ° C. with reference to 70 ° C.
- the set temperature such as 70 ° C and the allowable temperature range such as ⁇ 5 ° C can be arbitrarily set depending on the required processing, heat resistance of components, and the like.
- the first temperature control device 30 obtains the temperature information of the temperature sensor 36 and sets the heater device 38 so that the temperature of the temperature control plate 32 becomes 70 ° C. ⁇ 5 ° C. Control the current supplied to the (for example, using a variable resistor).
- the slot electrode 24 is designed to be used at 70 ° C, that is, designed to have the optimal slit length when placed in an atmosphere at 70 ° C. Is done.
- the temperature sensor 36 is disposed on the temperature control plate 32, it takes time for heat to propagate to the temperature control plate 32 and the slot electrode 24 or vice versa. Therefore, a wider allowable range such as 70 ° C. ⁇ 10 ° C. may be set.
- the first temperature control device 30 first drives the heater device 38 to lower the water temperature by 70% since the temperature of the temperature control plate 32 placed at room temperature is lower than 70 ° C. It may be supplied to the temperature control plate 32 at about ° C. Alternatively, it is not necessary to supply water to the temperature control plate 32 until the temperature rise due to the micro heat reaches around 70 ° C. Accordingly, the exemplary temperature control mechanism shown in FIG. 6 may include a mass flow controller for adjusting the amount of water from the water source 39 and an on-off valve.
- temperature of temperature control plate 32 exceeds 75 ° C
- water of about 15 ° C is supplied from the water source 39 to start cooling the temperature control plate 32, and thereafter, when the temperature sensor 36 indicates 65 ° C, the heater device 3 is turned on.
- Drive 8 to control the temperature of the temperature control plate 32 to 70 ° C ⁇ 5 ° C.
- the first temperature control device 30 uses the above-described mass flow controller and the on-off valve to supply, for example, about 15 ° C water from a water source 39 to cool the temperature control plate 32. Start, and then, various control methods such as stopping the water supply when the temperature sensor 36 indicates 70 ° C. can be adopted.
- the first temperature control device 30 controls the temperature so that the wavelength shortening member 22 and the slot electrode 24 are in a predetermined allowable temperature range centered on a predetermined set temperature.
- cooling is simply performed without setting them.
- the quality of the processing in the processing chamber 40 can be maintained.
- the slot electrode 24 is designed to have an optimal slit length when placed in an atmosphere at 70 ° C, it is simply cooled to about 15 ° C. It will be appreciated that alone is not meaningful for obtaining an optimal processing environment.
- the first temperature control device 30 controls the temperature of the wavelength shortening member 22 and the temperature of the slot electrode 24 simultaneously by controlling the temperature of the water flowing through the temperature control plate 32. .
- the temperature control plate 32, the antenna housing member 20, and the wavelength shortening member 22 are made of a material having high thermal conductivity.
- these three temperature controls can be shared by one device, so that the size and cost of the entire device can be prevented in that a plurality of devices are not required.
- the temperature control plate 32 is merely an example of a temperature control means, and it goes without saying that other cooling means such as a cooling fan can be employed.
- the third temperature control device 95 will be described with reference to FIG.
- the third temperature control device 95 controls the temperature of the periphery of the dielectric 28 using cooling water, a coolant, or the like. Like the first temperature control device, the third temperature control device 95 can be similarly configured using a temperature sensor and a heater device, and thus the detailed description thereof is omitted.
- the temperature control plate 32 and the antenna storage member 20 are separate members, but the function of the temperature control plate 32 may be provided to the antenna storage member 20.
- the antenna housing member 20 can be directly cooled.
- a temperature control plate 98 having a flow path 99 similar to the flow path 33 is formed on the side surface of the antenna housing member 20, the wavelength shortening member 22 and the slot can be formed. It is also possible to cool the electrodes 24 simultaneously.
- FIG. 8 is a partially enlarged cross-sectional view showing a modification of the temperature control plate 32 of the microwave plasma device 100 shown in FIG.
- a temperature control plate may be provided around the slot electrode 24, or a flow path may be formed in the slot electrode 24 itself so as not to hinder the arrangement of the slit 25. .
- the dielectric 28 is arranged between the slot electrode 24 and the processing chamber 40.
- the slot electrode 24 and the dielectric 28 are surface-bonded firmly and confidentially by, for example, brazing.
- a thin copper film is formed on the back surface of the fired ceramic dielectric material 28 by means of screen printing or the like to form a slot electrode 24 including a slit.
- a pattern may be formed and the slot electrode 24 made of a copper foil may be formed so as to be baked.
- the dielectric 28 and the processing chamber 40 are joined by a cooling ring 90.
- Third temperature for controlling the temperature around the dielectric 28 to, for example, 80 ° C. to 100 ° C.
- the degree control device 95 is provided, it is configured as shown in FIG.
- the third temperature control device 95 has a flow path 96 surrounding the dielectric 28, similarly to the temperature control plate 32. As described above, the third temperature control device is provided in the vicinity of the oring 90, so that the temperature of the dielectric 28 and the slot electrode 24 and the temperature of the oring 90 are effectively controlled. You can go to The dielectric material 28 is made of aluminum nitride (A1N) or the like, and the pressure of the processing chamber 40 in a reduced pressure or vacuum environment is applied to the slot electrode 24 so that the slot electrode 24 is formed. This prevents the deformation and the exposure of the slot electrode 24 to the processing chamber 40, resulting in spattering and copper contamination. If necessary, the slot 28 may be prevented from being affected by the temperature of the processing chamber 40 by forming the dielectric 28 with a material having low thermal conductivity. .
- A1N aluminum nitride
- the dielectric material 28 can be formed of a material having high thermal conductivity (for example, A 1 N), like the wavelength shortening member 22.
- the temperature of the slot electrode 24 can be controlled by controlling the temperature of the dielectric material 28, and the temperature of the wavelength shortening member 22 can be controlled via the slot electrode 24. Control can be performed. In this case, it is possible to form a flow path inside the dielectric material 28 so as not to hinder the introduction of the microwave into the processing chamber 40.
- the above-described temperature control can be arbitrarily combined.
- the processing chamber 40 has a side wall and a bottom portion formed of a conductor such as aluminum, and is entirely formed in a cylindrical shape. Can be.
- a heating plate 42 and a semiconductor wafer W as an object to be processed are stored in the processing chamber 4.
- an electrostatic chuck and a clamp mechanism for fixing the semiconductor wafer W are omitted for convenience.
- the heating plate 42 has a configuration similar to that of the heater device 38 and controls the temperature of the semiconductor wafer W.
- the hot plate 42 heats the semiconductor wafer W to about 450 ° C., for example.
- the hot plate 42 heats the semiconductor wafer W to about 80 ° C. or less, for example.
- the heating temperature of the heating plate 42 depends on the process. In any case, the heating plate 42 heats the semiconductor wafer W so that moisture as an impurity does not adhere to and enter the semiconductor wafer W.
- the second temperature control device 70 can control the magnitude of the heating current flowing through the hot plate 42 according to the temperature measured by the temperature sensor 72 that measures the temperature of the hot plate 42.
- a gas supply nozzle 50 made of quartz pipe for introducing a reaction gas is provided on the side wall of the processing chamber 40, and the nozzle 50 is connected to a mass flow controller 54 and an on-off valve 5 by a gas supply path 52. It is connected to a reaction gas source 58 through 6.
- a predetermined mixed gas ie, N2, xenon, argon, helium, or krypton
- a mixture of H 2) and NH 3 or SiH 4 gas can be selected.
- the vacuum pump 60 can evacuate the pressure in the processing chamber 40 to a predetermined pressure (for example, 0.1 to several 10 mT0rr).
- a predetermined pressure for example, 0.1 to several 10 mT0rr.
- the semiconductor wafer W is housed in the processing chamber 40 by a transfer arm via a gate valve (not shown) provided on the side wall of the normal processing chamber 40. Thereafter, the semiconductor wafer W is placed on a predetermined mounting surface by moving a lifter pin (not shown) up and down.
- a nozzle 50 is used to further mix NH 3 into a mixed gas of, for example, helium, nitrogen, and hydrogen.
- the above reaction gas source 58 is introduced into the processing chamber 40 while controlling the flow rate through the mass flow controller 54 and the on-off valve 56.
- the temperature of the processing chamber 40 is adjusted by the second temperature controller 70 and the hot plate 42 so as to be about 70 ° C. Further, the first temperature control device 30 controls the heater device 38 so that the temperature of the temperature control plate 32 becomes about 70 ° C. This ensures that over the temperature control plate 3 2 temperature of the wavelength shortening member 2 2 and its slot electrode 2 4 is maintained at about 7 0 D C.
- the slot electrode 24 is designed to have an optimum slit length at 70 ° C. In addition, it is assumed that it is known in advance that the slot electrode 24 has an allowable temperature error of about ⁇ 5 ° C. When plasma is generated, the slot electrode is heated by the heat generated by the plasma, so that when the slot temperature falls below a predetermined temperature, microwaves are supplied so that the heat when the plasma is started is reduced. It may be controlled so as to suppress it.
- microwaves from the microwave source 10 are introduced into the wavelength shortening member 22 in the antenna housing member 20 via, for example, a rectangular waveguide or a coaxial waveguide (not shown), for example, in a TEM mode.
- the microwave having passed through the wavelength shortening member 22 has its wavelength shortened, enters the slot electrode 24, and is introduced from the slit 25 into the processing layer 40 via the dielectric 28. Since the wavelength shortening member 22 and the slot electrode 24 are temperature-controlled, there is no deformation due to thermal expansion, etc., and the slot electrode 24 can maintain an optimal slit length. . This allows the microphone mouthpiece to be introduced uniformly (ie, without partial concentration) and at the desired overall density (ie, without loss of density) into the processing chamber 40.
- the first temperature control device 30 controls the cooling water at about 15 ° C from the water source 39. This is controlled to be within 75 ° C by introducing it into the plate 32. Similarly, when the temperature of the temperature control plate 32 becomes 65 ° C. or lower at the start of the treatment or due to supercooling, the first temperature control device 30 controls the heater device 38 to control the temperature from the water source 39. The temperature of the temperature control plate 32 can be raised to 65 ° C. or higher by increasing the temperature of the water introduced into the control plate 32.
- the second temperature controller 70 can control the temperature of the processing chamber 40 by controlling the hot plate 42 to prevent the temperature from being reduced.
- the microwave converts the reaction gas into plasma to perform film formation.
- the film forming process is performed, for example, for a predetermined period of time, and then the semiconductor wafer W is taken out of the processing chamber 40 from the above-described gate valve (not shown). Since microwaves having a desired density are uniformly supplied to the processing chamber 40, a film having a desired thickness is uniformly formed on the wafer W. Further, since the temperature of the processing chamber 40 is maintained at a temperature at which moisture and the like do not enter the wafer W, a desired film forming quality can be maintained.
- the microwave plasma processing apparatus 100 of the present invention may include a coil for generating a predetermined magnetic field.
- the microwave plasma processing apparatus 100 of the present embodiment is described as a plasma processing apparatus, the microwave plasma processing apparatus 100 etches or cleans the semiconductor wafer W. Needless to say, it can also be used for a single jungle.
- the object to be processed in the present invention is not limited to a semiconductor wafer, but includes a substrate for an LCD (liquid crystal device).
- FIG. 9 is a schematic cross-sectional view showing another configuration that can be suitably used in the present invention.
- FIG. 9 is the same as the embodiment shown in FIG. 1 except that an ignition plasma source is arranged in the side wall of the plasma processing chamber.
- Such an ignition plasma source in FIG. 9 is preferably an energy source for generating ignition plasma as shown in FIG.
- FIG. 10 Another configuration that can be suitably used in the present invention is shown in the schematic sectional view of FIG. FIG. 10 is the same as the embodiment shown in FIG. 1 except that the ignition plasma source is arranged as a remote plasma source.
- Such an ignition plasma source in FIG. 10 is preferably an ICP plasma source for remote plasma generation, as shown in FIG. Industrial applicability
- a plasma processing apparatus capable of providing plasma with higher selectivity (plasma energy is relatively low), which can be suitably used in the production of an electronic device.
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AU2003252351A AU2003252351A1 (en) | 2002-07-30 | 2003-07-30 | Plasma processing apparatus and plasma processing method |
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JP2002221260A JP2006054206A (ja) | 2002-07-30 | 2002-07-30 | プラズマ処理装置およびプラズマ処理方法 |
JP2002-221260 | 2002-07-30 |
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Cited By (1)
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US7485827B2 (en) | 2006-07-21 | 2009-02-03 | Alter S.R.L. | Plasma generator |
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JP2008005186A (ja) * | 2006-06-22 | 2008-01-10 | Ube Ind Ltd | 薄膜圧電共振器と薄膜圧電フィルタ |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0888096A (ja) * | 1994-09-19 | 1996-04-02 | Hitachi Ltd | プラズマ発生方法 |
JPH09293599A (ja) * | 1996-04-30 | 1997-11-11 | Hitachi Ltd | プラズマ処理方法および装置 |
US6312554B1 (en) * | 1996-12-05 | 2001-11-06 | Applied Materials, Inc. | Apparatus and method for controlling the ratio of reactive to non-reactive ions in a semiconductor wafer processing chamber |
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2002
- 2002-07-30 JP JP2002221260A patent/JP2006054206A/ja active Pending
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2003
- 2003-07-30 AU AU2003252351A patent/AU2003252351A1/en not_active Abandoned
- 2003-07-30 WO PCT/JP2003/009695 patent/WO2004012251A1/ja not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0888096A (ja) * | 1994-09-19 | 1996-04-02 | Hitachi Ltd | プラズマ発生方法 |
JPH09293599A (ja) * | 1996-04-30 | 1997-11-11 | Hitachi Ltd | プラズマ処理方法および装置 |
US6312554B1 (en) * | 1996-12-05 | 2001-11-06 | Applied Materials, Inc. | Apparatus and method for controlling the ratio of reactive to non-reactive ions in a semiconductor wafer processing chamber |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7485827B2 (en) | 2006-07-21 | 2009-02-03 | Alter S.R.L. | Plasma generator |
Also Published As
Publication number | Publication date |
---|---|
AU2003252351A1 (en) | 2004-02-16 |
JP2006054206A (ja) | 2006-02-23 |
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