WO2004012252A1 - 絶縁膜の形成方法 - Google Patents
絶縁膜の形成方法 Download PDFInfo
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- WO2004012252A1 WO2004012252A1 PCT/JP2003/009696 JP0309696W WO2004012252A1 WO 2004012252 A1 WO2004012252 A1 WO 2004012252A1 JP 0309696 W JP0309696 W JP 0309696W WO 2004012252 A1 WO2004012252 A1 WO 2004012252A1
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- Prior art keywords
- temperature
- insulating film
- temperature control
- plasma
- forming
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- 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
- 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
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/63—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the formation processes
- H10P14/6326—Deposition processes
- H10P14/6328—Deposition from the gas or vapour phase
- H10P14/6334—Deposition from the gas or vapour phase using decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H10P14/6336—Deposition from the gas or vapour phase using decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition in the presence of a plasma [PECVD]
-
- 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
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/66—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials
- H10P14/668—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials
- H10P14/6681—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials the precursor containing a compound comprising Si
-
- 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
- H10P72/0402—Apparatus for fluid treatment
-
- 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
-
- 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
- H10P95/00—Generic processes or apparatus for manufacture or treatments not covered by the other groups of this subclass
- H10P95/08—Planarisation of organic insulating materials
-
- 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
- H10P95/00—Generic processes or apparatus for manufacture or treatments not covered by the other groups of this subclass
- H10P95/90—Thermal treatments, e.g. annealing or sintering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/32—Processing objects by plasma generation
- H01J2237/33—Processing objects by plasma generation characterised by the type of processing
- H01J2237/336—Changing physical properties of treated surfaces
-
- 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
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/63—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the formation processes
- H10P14/6326—Deposition processes
- H10P14/6342—Liquid deposition, e.g. spin-coating, sol-gel techniques or spray coating
Definitions
- the present invention relates to a method for forming an insulating film in which a film on a substrate for an electronic device containing a curable organic material is cured using low-energy plasma.
- the present invention is widely and generally applicable to the manufacture of electronic device materials such as semiconductors, semiconductor devices, and liquid crystal devices.
- electronic device materials such as semiconductors, semiconductor devices, and liquid crystal devices.
- the background art of semiconductor devices will be described as an example here.
- the design rule becomes finer (for example, about 0.18 / zm or less)
- the wiring resistance and the capacitance between wirings increase remarkably
- the conventional wiring material has a higher performance than the conventional one. It will be difficult to do.
- wiring delay occurs. Therefore, it becomes necessary to use wiring made of a material such as copper (Cu) having lower electric resistance than aluminum. Cu has a lower electrical resistance than aluminum, so wiring delay is reduced. Has a characteristic that flows smoothly.
- An insulating film with a much lower dielectric constant (Low_k) is required.
- a Low_k film means a film having a relative dielectric constant of 3.0 or less.
- a step of curing a coating film applied on a substrate or the like (a curing step based on a reaction such as cross-linking) is actually essential in order to improve the film quality of the insulating film.
- an excessive heat history thermal project
- Absence consisting of the coating film There has been a problem that deterioration of the edge film is likely to occur. Disclosure of the invention
- An object of the present invention is to provide a method for forming an insulating film which has solved the above-mentioned disadvantages of the prior art.
- Another object of the present invention is to provide a method for forming an insulating film capable of providing a high-quality insulating film while preventing an excessive heat history from being applied.
- the method for forming an insulating film of the present invention is based on the above findings. More specifically, the method comprises irradiating a curable material-containing film disposed on a substrate for an electronic device with low-energy plasma to cure the film. It is characterized in that the conductive material-containing film is cured.
- FIG. 1 is a schematic block diagram showing the structure of a microphone mouth-wave plasma processing apparatus suitably usable in the present invention.
- FIG. 2 is a schematic plan view for explaining a specific configuration example of a mouth electrode used in the microwave plasma processing apparatus shown in FIG.
- FIG. 3 is a schematic block diagram showing a configuration of a first temperature control device and a temperature control plate used in the microwave plasma processing apparatus shown in FIG.
- FIG. 4 is a partially enlarged cross-sectional view for explaining the third temperature control device 95.
- FIG. 5 is a partially enlarged sectional view showing a modification of the temperature control plate of the microphone mouth wave plasma device shown in FIG.
- the meanings of the symbols in the figure are as follows.
- an organic material-containing film including a curable material disposed on a substrate for an electronic device is reduced in energy. Irradiation with a plasma is performed to cure the curable material-containing film.
- the above-mentioned substrate for electronic deposition which can be used in the present invention is not particularly limited, and may be appropriately selected from one or a combination of two or more known substrates for electronic devices.
- a substrate for an electronic device include a semiconductor material and a liquid crystal device material.
- the semiconductor material include, for example, a material containing single crystal silicon as a main component.
- “on the electronic device substrate” means that the insulating film to be formed is above the electronic device substrate (that is, on the side of the substrate on which the layers constituting the electronic device are to be formed). It is sufficient if it is located above. In other words, another insulating layer, a conductor layer (for example, a Cu layer), a semiconductor layer, or the like may be disposed therebetween. It is needless to say that a plurality of insulating layers, conductor layers (for example, Cu layers), semiconductor layers, and the like, including the insulating film to be formed in the present invention, may be arranged as necessary. 3 ⁇ 4>
- the curable material that can be used in the present invention is not particularly limited, but from the viewpoint of being suitable in combination with a wiring material having good conductivity such as Cu, a curable material that gives an insulating film having a dielectric constant of 3 or less after curing. Is preferred.
- an organic insulating film having a low dielectric constant having a dielectric constant of 3 or less can be used.
- PAE-2 manufactured by Shumacher
- HSG-R7 Hagachi Chemical
- FLARE Aplied Signal
- BCB Density Polymer
- SILK Density Polymer
- Speed Film W.L. Gore
- Any organic polymer can be used.
- the method for disposing the curable material on the substrate for electronic devices is not particularly limited, but it is preferable to apply a solution or dispersion of the curable material having fluidity to the substrate for electronic devices. From the viewpoint of uniformity, this coating is preferably spin coating.
- the film thickness before and after curing by plasma irradiation is not particularly limited, but the following film thickness can be suitably used.
- the thickness is reduced by several% (for example, 5 to 6%),
- the above-mentioned curable coating film is irradiated with low energy plasma.
- low-energy plasma refers to a plasma having an electron temperature of 2 eV or less.
- the following plasma processing conditions can be suitably used in view of the characteristics of the insulating film to be formed.
- Noble gases e.g., Kr, Ar, He or Xe: 100-300 Os ccm, more preferably 200-500 Scsm,
- N 2 100 to 1000 sccm, more preferably 100 to 200 sccm,
- Temperature room temperature (25 ° C) to 500 ° C, more preferably room temperature to 400 ° C, particularly preferably 250 ° to 350 ° C Pressure: 0.1 to: L0000Pa, more preferably:! ⁇ 100 Pa, particularly preferably 1-1 OP a
- Microwave 1 to 10 W / cm 2 , more preferably 2 to 5 W / cm 2 , particularly preferably 3 to 4 WZ cm 2
- Processing time 10 to 300 seconds, more preferably 60 to 120 seconds
- Base material temperature 350 ° C 50 ° C
- Processing time 60 to 120 seconds
- usable plasma is not particularly limited as long as the low-energy plasma irradiation is possible. From the viewpoint that a cured film having substantially reduced thermal budget can be easily obtained, it is preferable to use plasma having a relatively low electron temperature and high density. By forming a cured film with a substantially reduced thermal budget, peeling of the film and bleeding of the insulating film such as Cu can be suppressed, thus forming a high-quality insulating film. It is possible to do. In particular, when low-energy plasma treatment is performed on a curable material at a temperature of 400 ° C. or lower, an insulating film with particularly small damage can be obtained. (Preferred plasma)
- the characteristics of the plasma that can be suitably used in the present invention are as follows.
- Electron temperature 1 eV to 2 eV
- Plasma density uniformity ⁇ 5% or less
- an insulating film In the method of forming an insulating film according to the present invention, it is preferable to form a plasma having a low electron temperature and a high density by irradiating a microwave through a planar antenna member having a plurality of slots.
- a process with particularly small plasma damage and high reactivity at low temperatures can be performed.
- the conventional microphone mouth wave refers to a frequency of 1 to 100 GHz, but the microwave of the present invention is not limited to this, and refers to a frequency of approximately 50 GHz to 100 GHz.
- FIG. 1 is a schematic block diagram of the microwave plasma apparatus 100.
- the microwave plasma apparatus 100 of the present embodiment is connected to a microwave source 10, a reaction gas supply nozzle 50, and a vacuum pump 60.
- Antenna housing member 20 Antenna housing member 20, first temperature control device 30, processing chamber 4 0 and a second temperature control device 70.
- the microphone mouth-wave source 10 is made of, for example, a magnetron, and can generate a microwave (for example, 5 kW) of usually 2.45 GHz. Thereafter, the transmission mode of the microwave is converted into a TM, TE, or TEM mode by a mode converter (not shown).
- a mode converter not shown.
- an oscillator ⁇ to absorb the reflected wave of the generated microwave returning to the magnetron, and an EH tuner or stub tuner for matching with the load side are omitted.
- the antenna shortening member 22 is housed in the antenna housing member 20, 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.
- the wavelength shortening member 22 a predetermined material having a predetermined dielectric constant and a high thermal conductivity 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.
- alumina-based ceramic, SiN, and A1N can be used as the wavelength shortening member 22.
- 1 1 ⁇ is the dielectric constant £ t of about 9
- 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. 2, the slot electrodes 24 are slightly outward from the center, for example, starting from a position about several centimeters away, and a number of slits 25 gradually spiral toward the peripheral edge. Is formed.
- the slit 25 is swirled twice.
- the slit is formed by arranging a pair of slits 25A and 25B, which are a pair of slits 25A and 25B arranged slightly apart in a substantially T shape as described above.
- a lit group is formed.
- the length L1 of each slit 25A25B is the guide wavelength of the microwave; L is set within the range of approximately 116 to 1Z2, and the width is set to about 1 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 ⁇ , although there are slight adjustments. That is, the length L1 of the slit is set within the range shown by the following equation.
- each of the slits 25 ⁇ 25 ⁇ it is possible to form a uniform distribution of the microphone mouth wave in the processing room 40.
- a microphone having a width of about several mm is formed along the outer periphery of the disk-shaped slot electrode 24 along the outer periphery of the spiral slit to prevent radiation of the microphone mouth wave power reflection. There is also (can be omitted). As a result, the antenna efficiency of the slot electrode 24 is increased.
- the slit pattern of the slot electrode 24 of this embodiment is merely an example, and an electrode having an arbitrary slit shape (for example, an L shape) is used as the slot electrode. It goes without saying that it can be done.
- the first temperature control device 30 is connected to the antenna housing member 20. I have.
- 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 for example, a material such as stainless steel, which has good thermal conductivity and 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, Freon, etc.
- refrigerants alcohol, Galden, Freon, etc.
- 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 / or the 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 channel 33 of the temperature control plate 32 can be adjusted. Since the temperature control plate 32 has a high thermal conductivity, the temperature of the water flowing through the flow path 33 can be controlled to be substantially the same as the temperature of the water.
- 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 controlled by applying the power of the microwave source 10 (for example, 5 kW) for a long time.
- the temperature of the electrode itself rises due to the power loss in the shortening member 22 and the slot electrode 24.
- the wavelength shortening member 22 and the slot electrode 24 are thermally expanded and deformed.
- the slot length of the slot electrode 24 changes due to the thermal expansion, and the overall plasma density in the processing chamber 40 described below decreases or partially decreases. Or concentrate. If the overall plasma density decreases, the processing speed of the semiconductor wafer W changes. As a result, when the plasma processing is temporally controlled, 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 density decreases, the desired processing (etching depth or film thickness) may not be formed on the semiconductor wafer W in some cases. Further, if the plasma density is partially concentrated, the processing of the semiconductor wafer W is partially changed. Thus, if the slot electrode 24 is deformed due to the temperature change, the quality of the plasma processing is reduced.
- a predetermined time for example, 2 minutes
- the material of the wavelength shortening member 22 and the material of the slot electrode 24 are different, and the slot electrode 24 is warped because both are screwed. Will be. It will be understood that the quality of the plasma treatment is also reduced in this case.
- the slot electrode 24 does not deform even if it is disposed at a high temperature if the temperature is constant.
- the temperature control plate 3 2 (that is, the slot electrode 24) is controlled to be, for example, 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. and 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 optimum slit length when placed in an atmosphere at 10 ° C. You.
- the temperature sensor 36 is disposed on the temperature control plate 32, it takes time for heat to propagate from the temperature control plate 32 to the slot electrode 24 or vice versa. A wider allowable range such as 70 ° C ⁇ 10 ° C may be set.
- the first temperature control device 30 first operates the heater device 38 to lower the water temperature by 70% because the temperature of the temperature control plate 32 placed at room temperature is lower than 7 ° 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 heat of the microphone reaches around 70 ° C. Accordingly, the exemplary temperature control mechanism shown in FIG. 3 may include a mass flow controller that regulates the amount of water from the water source 39 and an on-off valve.
- the temperature control device 32 When the temperature of the temperature control plate 32 exceeds 75 ° C, for example, 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 temperature control device 32 is driven to control the temperature of the temperature control plate 32 to be 70 ° C. ⁇ 5 ° C.
- the first temperature controller 30 uses the mass flow controller and the on-off valve described above to supply, for example, about 15 ° C water from a water source 39 to start cooling the temperature control plate 32. Thereafter, when the temperature sensor 36 indicates 70 ° C., various control methods such as stopping supply of water 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 the predetermined set temperature. In this respect, cooling is simply performed without setting them. This is different from the cooling means disclosed in Japanese Patent Application Laid-Open No. 3-191703. Thereby, the quality of the processing in the processing chamber 40 can be maintained. For example, if the slot electrode 24 is designed to have an optimal slit length when placed in an atmosphere of 7 ° 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.
- FIG. 4 is a section for explaining the third temperature control device 95. It is a minute enlarged sectional view.
- the third temperature control device 95 controls the temperature of the periphery of the dielectric 28 using cooling water, a coolant, or the like.
- 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. 5 is a partially enlarged 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 disposed between the slot electrode 24 and the processing chamber 40.
- the slot electrode 24 and the dielectric 28 are surface-bonded, for example, firmly and confidentially by a brazing.
- a copper thin film is patterned on the back surface of the fired ceramic dielectric 28 by means of screen printing or the like to form a slot electrode 24 including a slit.
- a 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.
- a third temperature control device 95 for controlling the temperature around the dielectric 28 to, for example, 80 ° C. to 100 ° C. is provided, the configuration is as shown in FIG.
- the third temperature control device 95 removes the dielectric material 28 similarly to the temperature control plate 32. It has a surrounding channel 96. Since the third temperature control device is provided near the ring 90 in this way, the temperature of the dielectric 28 and the slot electrode 24 is controlled and the temperature of the ring 90 is controlled. Temperature control can also be performed effectively.
- 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 to deform the slot electrode 24. This prevents the slot electrode 24 from being exposed to the processing chamber 40 and being sputtered or causing 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 a low thermal conductivity.
- 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 control of the wavelength shortening member 22 can be performed through the slot electrode 24. It can be carried out. 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 maintained.
- a heating plate 42 and a semiconductor wafer W as an object to be processed are stored thereon.
- an electrostatic chuck / clamp mechanism for fixing the semiconductor wafer W is 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, for example, about 450 ° C.
- 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 heat plate 42 heats the semiconductor wafer W so that moisture as an impurity adheres to the semiconductor layer 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 a side wall of the processing chamber 40, and the nozzle 50 is connected to a mass flow controller 54 and a gas flow path 52 by a gas supply path 52. It is connected to a reaction gas source 58 through an on-off valve 56.
- a predetermined mixture gas that is, one of neon, xenon, anoregon, helium, radon, and crypton
- a mixture of N 2 and H 2 ) and NH 3 or SiH 4 gas can be selected.
- the vacuum pump 60 can evacuate the pressure of the processing chamber 40 to a predetermined pressure (for example, 0.1 to several lOmTorr).
- a predetermined pressure for example, 0.1 to several lOmTorr.
- the semiconductor wafer W is housed in the processing chamber 40 by a transfer arm via gate pulp (not shown) provided on the side wall of the normal processing chamber 40. Thereafter, the semiconductor wafer W is arranged on a predetermined mounting surface by vertically moving a lifter pin (not shown).
- a predetermined processing pressure for example, 50 mTorr
- at least one reaction gas source 58 mixed with a mixed gas of argon and nitrogen through the mass flow controller 54 and the on-off valve 56 while controlling the flow rate from the nozzle 50. Introduced to 0.
- 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. Thereby, the temperature of the wavelength shortening member 22 and the slot electrode 24 via the temperature control plate 32 is also maintained at about 70 ° 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. 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) in, for example, a TEM mode.
- the microwave that has 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 chamber 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. it can. This allows microwaves to be introduced into the processing chamber 40 uniformly (ie, without partial concentration) and at the desired overall density (ie, without loss of density).
- the temperature of the temperature control plate 32 rises above 75 ° C
- the first temperature control device 30 controls the temperature of the cooling water to be within 75 ° C by introducing cooling water of about 15 ° C from the water source 39 to the temperature control plate 32.
- 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 control device 70 can control the temperature of the processing chamber 40 by controlling the hot plate 42.
- the microwave converts the reactive gas into plasma, and irradiates the curable material-containing film disposed on the substrate for electron deposition with low-energy plasma to cure the curable material-containing film.
- This curing process is performed, for example, for a predetermined time set beforehand, and then the semiconductor wafer W is taken out of the processing chamber 40 from the above-described gate valve (not shown).
- Microwaves having a desired density are uniformly supplied to the processing chamber 40, so that a film having a desired thickness is uniformly formed on the substrate 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 does not hinder the use of electron cyclotron resonance, it may include a coil for generating a predetermined magnetic field.
- the microwave plasma processing apparatus 100 of this embodiment is described as a plasma CVD apparatus.
- the micro-wave plasma processing apparatus 100 can also be used when etching or cleaning the semiconductor wafer W.
- the object to be processed in the present invention is not limited to a semiconductor wafer, but includes an LCD and the like. Industrial applicability
- a method for forming an insulating film capable of providing a high-quality insulating film while preventing an excessive heat history from being applied.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Vapour Deposition (AREA)
- Formation Of Insulating Films (AREA)
- Plasma Technology (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004524318A JP4580235B2 (ja) | 2002-07-30 | 2003-07-30 | 絶縁膜の形成方法 |
| AU2003252352A AU2003252352A1 (en) | 2002-07-30 | 2003-07-30 | Method for forming insulating layer |
| US11/041,303 US7569497B2 (en) | 2002-07-30 | 2005-01-25 | Method and apparatus for forming insulating layer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002221585 | 2002-07-30 | ||
| JP2002-221585 | 2002-07-30 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/041,303 Continuation-In-Part US7569497B2 (en) | 2002-07-30 | 2005-01-25 | Method and apparatus for forming insulating layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004012252A1 true WO2004012252A1 (ja) | 2004-02-05 |
Family
ID=31184867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2003/009696 Ceased WO2004012252A1 (ja) | 2002-07-30 | 2003-07-30 | 絶縁膜の形成方法 |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4580235B2 (ja) |
| KR (1) | KR100701359B1 (ja) |
| CN (1) | CN100382251C (ja) |
| AU (1) | AU2003252352A1 (ja) |
| WO (1) | WO2004012252A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10804077B2 (en) | 2017-02-01 | 2020-10-13 | Tokyo Electron Limited | Microwave plasma source, microwave plasma processing apparatus and plasma processing method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183541B (zh) * | 2013-05-22 | 2017-03-01 | 中芯国际集成电路制造(上海)有限公司 | 修复介质k值的方法 |
| CN105499069B (zh) * | 2014-10-10 | 2019-03-08 | 住友重机械工业株式会社 | 膜形成装置及膜形成方法 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57103333A (en) * | 1980-12-18 | 1982-06-26 | Toshiba Corp | Manufacture of semiconductor device |
| JPH08236520A (ja) * | 1994-11-03 | 1996-09-13 | Korea Electron Telecommun | 半導体装置の絶縁層の形成方法 |
| JPH10150036A (ja) * | 1996-11-18 | 1998-06-02 | Fujitsu Ltd | 低誘電率絶縁膜の形成方法及びこの膜を用いた半導体装置 |
| WO2000018847A1 (en) * | 1998-09-25 | 2000-04-06 | Catalysts & Chemicals Industries Co., Ltd. | Coating fluid for forming low-permittivity silica-based coating film and substrate with low-permittivity coating film |
| WO2001070628A2 (en) * | 2000-03-20 | 2001-09-27 | Dow Corning Corporation | Plasma processing for porous silica thin film |
| US6399520B1 (en) * | 1999-03-10 | 2002-06-04 | Tokyo Electron Limited | Semiconductor manufacturing method and semiconductor manufacturing apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3566046B2 (ja) * | 1997-10-02 | 2004-09-15 | アルプス電気株式会社 | プラズマ処理装置およびスパッタ装置 |
| TW439197B (en) * | 1997-10-31 | 2001-06-07 | Dow Corning | Electronic coating having low dielectric constant |
| JP4222707B2 (ja) * | 2000-03-24 | 2009-02-12 | 東京エレクトロン株式会社 | プラズマ処理装置及び方法、ガス供給リング及び誘電体 |
-
2003
- 2003-07-30 KR KR1020057001481A patent/KR100701359B1/ko not_active Expired - Fee Related
- 2003-07-30 AU AU2003252352A patent/AU2003252352A1/en not_active Abandoned
- 2003-07-30 CN CNB038124831A patent/CN100382251C/zh not_active Expired - Fee Related
- 2003-07-30 WO PCT/JP2003/009696 patent/WO2004012252A1/ja not_active Ceased
- 2003-07-30 JP JP2004524318A patent/JP4580235B2/ja not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57103333A (en) * | 1980-12-18 | 1982-06-26 | Toshiba Corp | Manufacture of semiconductor device |
| JPH08236520A (ja) * | 1994-11-03 | 1996-09-13 | Korea Electron Telecommun | 半導体装置の絶縁層の形成方法 |
| JPH10150036A (ja) * | 1996-11-18 | 1998-06-02 | Fujitsu Ltd | 低誘電率絶縁膜の形成方法及びこの膜を用いた半導体装置 |
| WO2000018847A1 (en) * | 1998-09-25 | 2000-04-06 | Catalysts & Chemicals Industries Co., Ltd. | Coating fluid for forming low-permittivity silica-based coating film and substrate with low-permittivity coating film |
| US6399520B1 (en) * | 1999-03-10 | 2002-06-04 | Tokyo Electron Limited | Semiconductor manufacturing method and semiconductor manufacturing apparatus |
| WO2001070628A2 (en) * | 2000-03-20 | 2001-09-27 | Dow Corning Corporation | Plasma processing for porous silica thin film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10804077B2 (en) | 2017-02-01 | 2020-10-13 | Tokyo Electron Limited | Microwave plasma source, microwave plasma processing apparatus and plasma processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100701359B1 (ko) | 2007-03-28 |
| AU2003252352A1 (en) | 2004-02-16 |
| KR20050026018A (ko) | 2005-03-14 |
| JPWO2004012252A1 (ja) | 2006-01-05 |
| CN100382251C (zh) | 2008-04-16 |
| JP4580235B2 (ja) | 2010-11-10 |
| CN1692478A (zh) | 2005-11-02 |
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