WO2009101927A1 - マイクロ波プラズマ処理装置の天板、プラズマ処理装置およびプラズマ処理方法 - Google Patents
マイクロ波プラズマ処理装置の天板、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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- WO2009101927A1 WO2009101927A1 PCT/JP2009/052200 JP2009052200W WO2009101927A1 WO 2009101927 A1 WO2009101927 A1 WO 2009101927A1 JP 2009052200 W JP2009052200 W JP 2009052200W WO 2009101927 A1 WO2009101927 A1 WO 2009101927A1
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- microwave
- plasma
- top plate
- plasma processing
- processing apparatus
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy
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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
-
- 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
-
- 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
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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
- H01J37/32238—Windows
Definitions
- the present invention relates to a top plate of a microwave plasma processing apparatus, a plasma processing apparatus, and a plasma processing method.
- Plasma technology is widely used in many semiconductor devices such as integrated circuits, liquid crystals, and solar cells. It is used in thin film deposition and etching processes in the semiconductor manufacturing process, but advanced plasma processing is required for higher performance and higher performance products (for example, ultra-fine processing technology). In particular, a microwave plasma processing apparatus that can obtain low-pressure and high-density plasma has attracted attention.
- a plasma processing apparatus using a RLSA (Radial Slot Antenna) plasma microwave source generates plasma by ionizing gas by microwave discharge.
- the microwaves are fed from the slot portion of the antenna through the waveguide, propagate through the top plate, and are radiated into the plasma generation chamber.
- RLSA Random Slot Antenna
- the propagation of microwaves is not equal between the central portion and the peripheral portion of the top plate, and plasma cannot be generated uniformly.
- the top plate is provided with different thicknesses or provided with convex portions, the microwave resonance region corresponding to the plasma conditions is formed, so that radial propagation can be controlled.
- the plasma is biased due to the non-uniformity in the circumferential propagation of the microwave.
- the plasma mode changes depending on the microwave frequency and gas pressure, so the wavelength of the microwave that propagates through the top plate and the top plate. It was necessary to change.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a top plate, a plasma processing apparatus, and a plasma of a microwave plasma processing apparatus that can generate plasma with a stable plasma mode and good reproducibility. It is to provide a processing method.
- a top plate of a microwave plasma processing apparatus is a dielectric top plate that is provided in the microwave plasma processing apparatus and propagates microwaves,
- the plasma generation side surface is provided with a recess that absorbs a wave on its side surface and in which a microwave propagates in a single mode.
- the top plate has a thickness that allows microwaves to propagate in multimode.
- the top plate is provided with a plurality of recesses.
- the concave portion is characterized in that it is arranged on one or more circles centered on the microwave introduction position.
- the recess may have a radius of an approximately circle that is an integral multiple of the wavelength of the microwave propagating in the dielectric.
- the concave portion may be arranged at a point-symmetrical position around the microwave introduction position.
- the recess is characterized in that the diameter in the direction in which the microwave propagates has a size in the range of 1/3 to 1/2 of the wavelength of the microwave propagating in the dielectric.
- the recess is characterized in that the depth thereof is a size in the range of 1/4 to 3/8 of the wavelength of the microwave propagating in the dielectric.
- the recess has a circular cross section parallel to the surface on the plasma generation side.
- a plasma processing apparatus provides: A plasma generation chamber for performing plasma treatment; A slot antenna for introducing microwaves for plasma generation into the plasma generation chamber; A top plate provided on the surface on the plasma generation side with a recess that absorbs the microwave on its side and that propagates in a single mode within the microwave; It is characterized by providing.
- a plasma processing method comprising: a top plate provided with a recess on a plasma generation side, which has a microwave that is resonantly absorbed by a side surface and in which the microwave propagates in a single mode. And a step of generating plasma using the method.
- the step of generating plasma may include the generation of plasma in two or more different atmospheric conditions in the plasma generation chamber without changing the wavelength of the microwave transmitted through the top plate and the top plate.
- the microwave is resonantly absorbed by the side surface of the concave portion and propagated in a single mode inside.
- uniform and stable plasma can be generated.
- plasma can be generated without changing the wavelength of the microwave transmitted through the top plate and the top plate, and the plasma mode can be stabilized.
- FIG. 3 is a sectional view taken along line MM in FIG. 2.
- FIG. 3B is a partially enlarged view of FIG. 3A. It is a top view of a radial line slot antenna. It is a top view which shows a deformation
- Plasma processing equipment Plasma generation chamber 3 Top plate (dielectric) 3A Concave part 3B Concave part of center part 4 Antenna 4A Waveguide part (shield member) 4B radial line slot antenna (RLSA) 4C Slow wave plate (dielectric) 5 Waveguide 6 Substrate holder 7 Gas passage, gas inlet 8 Plasma 10 Substrate
- FIG. 1 is a cross-sectional view of a plasma processing apparatus according to an embodiment of the present invention.
- the plasma processing apparatus 1 includes a plasma generation chamber (chamber) 2, a top plate (dielectric material) 3, an antenna 4, a waveguide 5, a substrate holder 6, and a gas passage 7.
- the antenna 4 includes a waveguide portion (shield member) 4A, a radial line slot antenna (RLSA) 4B, and a slow wave plate (dielectric) 4C.
- the waveguide 5 is a coaxial waveguide composed of an outer waveguide 5A and an inner waveguide 5B.
- the plasma generation chamber 2 of the plasma processing apparatus 1 is closed by a top plate 3. At this time, the inside of the plasma generation chamber 2 is kept in a vacuum state by a vacuum pump.
- An antenna 4 is coupled on the top plate 3.
- a waveguide 5 is connected to the antenna 4.
- the waveguide section 4A is connected to the outer waveguide 5A, and the radial line slot antenna 4B is coupled to the inner waveguide 5B.
- the slow wave plate 4C is located between the waveguide 4A and the radial line slot antenna 4B and compresses the wavelength of the microwave.
- the slow wave plate 4C is made of a dielectric material such as SiO 2 or Al 2 O 3 .
- the microwave propagates in the radial direction between the waveguide 4A and the radial line slot antenna 4B and is radiated from the slot of the radial line slot antenna 4B.
- the microwave propagates through the top plate 3 and has a plane of polarization, and forms a circularly polarized wave as a whole.
- the top plate 3 according to the embodiment of the present invention will be described.
- the top plate 3 has a simple and flat form or a form in which radial propagation can be controlled by giving different thicknesses suitable for the plasma resonance conditions.
- FIG. 2 is a plan view of the top plate 3 in the microwave plasma processing apparatus according to the embodiment of the present invention as viewed from the plasma generation chamber side.
- the top plate 3 shown in FIG. 2 is made of a dielectric material that propagates microwaves such as quartz or alumina.
- the thickness of the top plate 3 has such a thickness that microwaves propagate in a multimode, and can be 30 mm in the case of quartz, for example.
- the top plate 3 is provided with a recess 3A on the surface facing the chamber 2 and a recess 3B at the center on the opposite surface.
- the central recess 3 ⁇ / b> B has the same central axis as the antenna 4 and the waveguide 5 for feeding microwaves into the chamber 2.
- An arrow R in FIG. 2 is an example representing the radial direction from the center of the recess 3B at the center, and is equal to the propagation direction of the microwave moving in the top plate 3.
- the recesses 3A in the same radial direction are designated as 3a1, 3a2, 3a3 from the side closer to the center.
- FIG. 3A is a cross-sectional view taken along line MM in FIG.
- FIG. 3B is a partially enlarged view of FIG. 3A.
- the length in the radial direction of the recess 3A is W, and the depth is H.
- the center portion of the recesses 3B and the alternate long and short dash line drawn perpendicular to the recesses 3A indicate the center positions of the recesses.
- the distance from the center of the concave portion 3B to the center of the concave portion 3a1 is X1
- the distance to the center of the concave portion 3a2 is X2
- the distance to the center of the concave portion 3a3 is X3.
- FIG. 4 is a plan view showing an example of the radial line slot antenna 4B.
- the radial line slot antenna 4B has a shape that covers the opening of the antenna 4 of the waveguide 4A, and has a large number of slots 4b1 and 4b2.
- Plasma can be spread by providing the radial line slot antenna 4B at the end of the waveguide 4A.
- the slots 4b1 and 4b2 are formed concentrically and orthogonal to each other. Since the plasma spreads perpendicularly in the length direction of the slots 4b1, 4b2, plasma is generated immediately below the top plate 3.
- the microwaves are radiated downward from the slots 4b1 and 4b2 and propagated in the radial direction, and are repeatedly reflected within the top plate 3, and are strengthened by interference to form a standing wave.
- resonance absorption which is high-efficiency energy absorption of microwaves, occurs on the side surface of the recess 3A provided in the top plate 3, and propagates in a single mode inside the recess 3A.
- Plasma that propagates in a single mode inside each of the plurality of recesses 3A and has a stable distribution immediately below the top 3 can be formed.
- Surface wave plasma is generated by surface absorption of microwaves except for the concave portion 3A of the top plate 3. Since the plasma density of the surface wave plasma is low and the influence on the entire top plate 3 is small, the density pattern of the plasma on the top plate 3 is constant, and the plasma mode is stabilized.
- an inert gas such as argon (Ar) or xenon (Xe) and nitrogen (N 2 ) is supplied from the gas passage 7 such as hydrogen as necessary.
- argon (Ar) or xenon (Xe) plasma 8 is formed.
- the diameter W in the propagation direction of the recess 3A has a size in the range of 1/3 to 1/2 of the wavelength of the microwave propagating in the dielectric. It is desirable that This is because when the diameter W in the propagation direction of the recess 3A is larger than 1 ⁇ 2 of the wavelength, an eigenmode is formed inside the recess 3A, and plasma is generated in a different mode depending on the conditions in the plasma generation chamber. Moreover, an antiphase occurs and the microwave power becomes weak, and a strong plasma cannot be obtained. When the diameter W is smaller than 1 ⁇ 2 of the wavelength, the plasma mode remains stable, but the area where plasma is generated is reduced.
- the diameter W is larger than 1/3 of the wavelength and is as close to 1/2 of the wavelength as possible so that the number of the recesses 3A can be reduced considering the processing of the recess 3A in the top plate 3. Is desirable.
- the depth H of the recess 3A is in the range of 1/4 to 3/8 of the wavelength of the microwave propagating in the dielectric. It is desirable that When the depth H of the recess 3A is smaller than 1 ⁇ 4 of the wavelength, a plasma is generated near the opening of the recess 3A to form an eigenmode, or a surface wave plasma is generated irregularly, resulting in a density pattern of the plasma. Is not determined, and the plasma mode becomes unstable. In addition, when the depth H of the recess 3A is larger than 3/8 of the wavelength, plasma is generated in the back of the recess 3A, and the efficiency of the plasma processing is reduced.
- the recesses 3A satisfying the aforementioned diameter W and depth H are arranged on the surface of the top plate 3 on the plasma generation side, they may be arranged on a circle centering on the position where the microwave is introduced. At this time, the number of circles is 1 or 2 or more. Further, it is desirable that the diameter of the circle in which the concave portion is arranged is provided in the portion where the concave portion 3A is strengthened by the standing wave. Moreover, the top plate 3 can be installed regardless of the circumferential direction of the top plate 3 by arranging the concave portions 3A at point-symmetric positions.
- X1 in FIG. 3B is the size of one wavelength of the microwave that propagates in the dielectric
- X2 is the size of two wavelengths
- X3 is the size of three wavelengths.
- a position that is an integral multiple of the wavelength from the center of the recess 3B in the center is a position where the formed standing waves are strengthened, and the microwave power is maximized.
- the radius of the circle to be arranged may be about an integer multiple of the wavelength of the microwave propagating in the dielectric, and ⁇ 1/4 wavelength from the size of the integral multiple of the wavelength. Desirably within minutes.
- FIG. 3B shows the case where the recesses 3A are formed at all the integral multiples of the wavelength in the same radial direction. However, when viewed in the same radial direction, the recesses are formed only at any one of the positions X1, X2, and X3. 3A may be provided, and there may be a combination of X1 and X3 or a combination of X2 and X3. It is desirable to arrange them at point-symmetrical positions on a circle including X1, centering on the concave portion 3B at the center, on a circle including X2, and on a circle including X3. Depending on the relationship between the diameter size of the top plate 3 and the wavelength of the microwave that propagates through the dielectric, the number of circles in which the recesses 3A can be arranged may differ, and is not limited to the size of three wavelengths.
- the recess 3B in the center is formed to fix the position where the microwave is introduced and the position of the top plate 3, and is not necessarily present. Further, there are cases where the position does not coincide with the position where the microwave is introduced, or where the position does not coincide with the center position of the top 3. In these cases, the position of the recess 3A is determined based on the introduction position of the microwave.
- FIGS. 5A and 5B are plan views showing deformation of recesses as another embodiment of the present invention, and represent a plane parallel to the plasma generation side of the top plate.
- FIGS. 6A and 6B are cross-sectional views showing deformation of recesses as still another embodiment, and show a surface perpendicular to the plasma generation surface of the top plate.
- the surface parallel to the surface on the plasma generation side of the top plate 3 of the recess 3A of the top plate 3 according to the embodiment of the present invention has been described as a circle in FIG. 2, the ellipse or corner in FIGS. 5A and 5B A round rectangle may be used. These are examples of modifications and may have other shapes not shown.
- the top plate is circular in terms of ease of processing the top plate, the shape is axisymmetric with respect to the radial direction, and the diameter W of the recess 3A is 1/3 to 1/2 of the wavelength of the microwave propagating in the dielectric. It is sufficient to satisfy the size range of.
- the shape of the recess of the recess 3A of the top plate 3 has been described as a cylindrical shape in FIGS. 2 and 3, but a hemispherical shape having a bottom surface on the plasma generation side, a conical shape, or the like. Alternatively, see FIG. 6A and FIG. 6B. Inside the recess 3A, resonance absorption of microwaves occurs on a surface that is not parallel to the surface on the plasma generation side to generate plasma.
- the shape of the recess 3A varies depending on the cross-section and the combination in the depth direction, and is not limited to the illustrated example.
- Example 1 7A and 7B are examples in which a plasma experiment was performed with the top plate 3 according to the embodiment of the present invention, and the effect of the concave portion 3A of the top plate 3 was confirmed.
- FIG. 7A shows an example (photograph) of plasma in the case of a flat top plate (hereinafter referred to as a conventional top plate), and
- FIG. 7B shows the case of a top plate provided with the recess 3A of the present invention (hereinafter referred to as the top plate of the present invention). It is an example (photograph) of plasma.
- the top plate 3 used in the experiment is made of quartz, and the top plate of the present invention is a conventional top plate provided with a plurality of recesses 3A.
- the conditions for plasma formation were the same, and argon gas was used, the experiment was performed at a microwave power of 2000 W and a pressure of 1.33 Pa.
- the plasma generation is non-uniform, and the density of the peripheral portion is particularly conspicuous.
- the present invention no difference was observed between the central portion and the peripheral portion of the top plate 3, and it was confirmed that plasma was uniformly generated inside the plurality of concave portions 3A and the plasma mode was stable.
- Example 2 8A and 8B are examples (photographs) in which plasma is formed at different pressures using the top plate 3 according to the embodiment of the present invention.
- 8A shows a case where the pressure is 1.33 Pa (condition A)
- FIG. 8B shows a case where the pressure is 66.65 Pa (condition B).
- Conditions other than pressure are the same as in Example 1.
- the experiment was conducted under the condition that the condition A was 1.33 Pa and the condition B was 66.65 Pa.
- the presence or absence of plasma formation is compared with the plasma distribution if formed.
- the plasma could be generated in the same pattern even when the condition B was in a relatively high pressure state. Further, when FIG. 8A and FIG. 8B are compared, it can be seen that plasma is formed based on a plurality of concave portions. Comparing the plasmas of condition A and condition B, it was found that plasmas having substantially the same plasma size and uniform distribution were formed.
- the plasma generation pattern (density distribution) changes when the pressure is different, and therefore it is necessary to control the pressure in order to keep the generation pattern constant.
- the top plate of the present invention as shown in Example 2, it was possible to obtain uniform plasma that was hardly affected by pressure conditions and had good reproducibility.
- ⁇ ⁇ Plasma is generated by adjusting temperature, gas type, etc., except for pressure conditions.
- the pressure range is as small as 10 mPa to several tens Pa, and the setting of other conditions may be limited.
- plasma can be generated even when the pressure is lower or higher than the conventional pressure, so that the optimum conditions can be selected without being limited to the pressure conditions.
- the plasma processing apparatus is the same as that shown in FIG.
- the top plate the top plate 3 of the plasma processing apparatus according to the first aspect of the present invention is used.
- the top plate 3 By using the top plate 3 according to the embodiment of the present invention, microwaves are absorbed inside the recesses 3A to generate plasma. Regardless of the propagation mode in the microwave top plate 3, the plasma 8 can be generated at the position of the recess 3 ⁇ / b> A, and the plasma having the same generation intensity distribution can be stably obtained. Since the generation position of the plasma 8 is limited to the position of the recess 3A, the reproducibility is good. Since the density distribution of plasma generation is fixed and does not change at the position of the recess, even when the conditions such as the type and component ratio of the introduced gas and the pressure and temperature of the gas are changed, the same mode of plasma can be generated.
- Plasma 8 having substantially the same generation intensity distribution can be obtained by only adjusting the type and component ratio of gas and the temperature and pressure according to the plasma treatment. It is not necessary to change to a different top plate and change the wavelength of the microwave propagating in the top plate. Furthermore, there is no fine adjustment for obtaining a necessary mode after a necessary setting change of temperature or pressure, or fine adjustment for obtaining a stable mode. Compared to the conventional method, the work can be performed stably and with good reproducibility in a short time.
- the recess 3A has a diameter in the direction in which the microwave propagates in the range of 1/3 to 1/2 of the wavelength of the microwave in the dielectric, and a depth in the range of 1/4 to 3/8. Is preferable. Further, it is desirable that the position of the recess 3A is arranged on a circle centering on the position where the microwave is introduced, in particular, the radius of the circle is approximately an integral multiple of the wavelength of the microwave propagating in the dielectric. It can efficiently absorb the supplied microwaves and generate plasma without waste. At that time, if the concave portion 3A is arranged at a point-symmetrical position around the microwave introduction position, the top plate 3 can be installed in the plasma processing apparatus 1 without worrying about the circumferential direction.
- the top plate 3 provided with the recess 3A on the plasma generation side surface is used.
- the microwave can generate a strong plasma in a single mode inside by resonating and absorbing on the side surface of the recess 3A. Since the plasma is generated at the concave portion 3A of the top plate 3, the plasma mode is stabilized.
- the diameter in the propagation direction of the recess 3A is set to a size in the range of 1/3 to 1/2 of the wavelength of the microwave propagating in the dielectric, and the depth is set to a size in the range of 1/4 to 3/8. It propagates in a single mode inside the recess 3A and generates strong plasma. Further, the radius of the circle arranged around the microwave introduction position is set to be approximately an integer multiple of the wavelength of the microwave propagating through the dielectric, so that the recess 3A at the position where the standing wave is intensified can be obtained. Microwave resonance absorption occurs on the side surface, and a strong plasma can be obtained efficiently.
- the concave portion 3A By providing the concave portion 3A at a point-symmetrical position around the microwave introduction position, the plasma mode in the circumferential direction is stabilized, and the top plate can be installed regardless of the orientation.
- the plasma 8 is generated in a single mode inside the recess, the atmosphere, the substrate processing method, and the plasma processing conditions in the plasma generation chamber 2 of the plasma processing apparatus 1 are changed, that is, the type of gas to be introduced and the component ratio. Even when the conditions such as the pressure and temperature of the gas are changed, it is possible to perform the plasma treatment without changing the wavelength of the top plate 3 and the microwave propagating through the top plate 3.
- plasma in the same mode can be generated stably, so that plasma treatment can be continuously performed under different conditions without changing the wavelength of the microwave propagating through the top plate and the top plate.
- the present invention is particularly effective when it is desired to change the conditions of the film forming process and the etching process.
- the plasma processing method of the present invention can be applied to all other plasma processing such as ashing processing.
- the substrate as the object to be processed is not limited to a semiconductor substrate, and a glass substrate, a ceramic substrate, or the like can be selected, and can be applied to plasma processing of various types of substrates.
- top plate, the plasma processing apparatus, and the plasma processing method described in the embodiment are merely examples, and the present invention is not limited thereto.
- the present invention is useful as a top plate of a microwave plasma processing apparatus, a plasma processing apparatus, and a plasma processing method.
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Abstract
Description
プラズマ処理を行うプラズマ発生室と、
プラズマ発生室内にプラズマ発生のためのマイクロ波を導入するスロットアンテナと、
マイクロ波をその側面で共鳴吸収し、かつマイクロ波がその内部で単一のモードで伝播する凹部を、プラズマ発生側の面に備える天板と、
を備えることを特徴とする。
2 プラズマ発生室(チャンバー)
3 天板(誘電体)
3A 凹部
3B 中心部の凹部
4 アンテナ
4A 導波部(シールド部材)
4B ラジアルラインスロットアンテナ(RLSA)
4C 遅波板(誘電体)
5 導波管
6 基板保持台
7 ガス通路、ガス導入口
8 プラズマ
10 基板
以下、本発明の第1の観点に係るマイクロ波プラズマ処理装置の天板について図面を参照しながら詳細に説明する。なお、図中同一または相当部分には同一符号を付し、その説明は繰り返さない。図1は本発明の実施の形態に係るプラズマ処理装置の断面図である。プラズマ処理装置1は、プラズマ発生室(チャンバー)2、天板(誘電体)3、アンテナ4、導波管5、基板保持台6、ガス通路7、を備える。アンテナ4は導波部(シールド部材)4A、ラジアルラインスロットアンテナ(RLSA)4B、遅波板(誘電体)4Cからなる。導波管5は外側導波管5Aと内側導波管5Bからなる同軸導波管である。
凹部3Aの形状は断面や深さ方向の組合せにより様々であり、図示した例に限らない。
図7A及び7Bは本発明の実施の形態に係る天板3でプラズマ実験を行い、天板3の凹部3Aの効果を確認した例である。図7Aはフラット天板の場合(以下、従来の天板という)のプラズマの例(写真)、図7Bは本発明の凹部3Aを備える天板の場合(以下、本発明の天板という)のプラズマの例(写真)である。
図8A及び8Bは本発明の実施の形態に係る天板3を用いて、異なる圧力でプラズマを形成した例(写真)である。図8Aは圧力1.33Paの場合(条件A)、図8Bは圧力66.65Paの場合(条件B)を示す。圧力以外の条件は実施例1と同じである。圧力は、条件Aを1.33Pa、条件Bを66.65Paとして、実験を行った。プラズマ形成の有無と、形成された場合はプラズマの分布を比較する。
Claims (12)
- マイクロ波プラズマ処理装置に設けられ、マイクロ波を伝播する誘電体の天板であって、前記マイクロ波をその側面で共鳴吸収し、かつ前記マイクロ波がその内部で単一のモードで伝播する凹部を、プラズマ発生側の面に備えることを特徴とするマイクロ波プラズマ処理装置の天板。
- 前記天板は、前記マイクロ波がマルチモードで伝播する厚さを有することを特徴とする請求項1に記載のマイクロ波プラズマ処理装置の天板。
- 前記天板は、前記凹部を複数備えることを特徴とする請求項1に記載のマイクロ波プラズマ処理装置の天板。
- 前記凹部は、前記マイクロ波の導入位置を中心とする1または2以上の円上に配置されることを特徴とする請求項3に記載のマイクロ波プラズマ処理装置の天板。
- 前記凹部は、配置される円の半径が前記誘電体内を伝播するマイクロ波の波長のおよそ整数倍の大きさであることを特徴とする請求項3に記載のマイクロ波プラズマ処理装置の天板。
- 前記凹部は、前記マイクロ波の導入位置を中心として点対称の位置に配置されることを特徴とする請求項3に記載のマイクロ波プラズマ処理装置の天板。
- 前記凹部は、前記マイクロ波が伝播する方向の径が前記誘電体内を伝播するマイクロ波の波長の1/3から1/2の範囲の大きさであることを特徴とする請求項1に記載のマイクロ波プラズマ処理装置の天板。
- 前記凹部は、その深さが前記誘電体内を伝播するマイクロ波の波長の1/4から3/8の範囲の大きさであることを特徴とする請求項1に記載のマイクロ波プラズマ処理装置の天板。
- 前記凹部は、前記プラズマ発生側の面に平行な断面が円形であることを特徴とする請求項1に記載のマイクロ波プラズマ処理装置の天板。
- プラズマ処理を行うプラズマ発生室と、
前記プラズマ発生室内にプラズマ発生のためのマイクロ波を導入するスロットアンテナと、
前記マイクロ波をその側面で共鳴吸収し、かつ前記マイクロ波がその内部で単一のモードで伝播する凹部を、プラズマ発生側の面に備える天板と、
を備えることを特徴とするプラズマ処理装置。 - マイクロ波を側面で共鳴吸収し、かつ前記マイクロ波がその内部で単一のモードで伝播する凹部を、プラズマ発生側の面に備える天板を用いてプラズマを発生する工程を有することを特徴とするプラズマ処理方法。
- 前記プラズマを発生する工程は、前記天板と前記天板内を伝播するマイクロ波の波長を変えることなく、プラズマ発生室内の異なる2以上の雰囲気条件におけるプラズマの発生を含むことを特徴とする請求項11に記載のプラズマ処理方法。
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Cited By (7)
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---|---|---|---|---|
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0734253A (ja) * | 1993-07-20 | 1995-02-03 | Hitachi Ltd | マイクロ波プラズマ処理装置 |
JP2003151797A (ja) * | 2001-11-08 | 2003-05-23 | Sharp Corp | プラズマプロセス装置および処理装置 |
JP2004200307A (ja) * | 2002-12-17 | 2004-07-15 | Tokyo Electron Ltd | プラズマ処理装置 |
JP2007188722A (ja) * | 2006-01-12 | 2007-07-26 | Tokyo Electron Ltd | プラズマ処理装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3427165B2 (ja) | 1994-02-24 | 2003-07-14 | 株式会社エルデック | 電気集塵装置 |
JPH09232099A (ja) * | 1996-02-20 | 1997-09-05 | Hitachi Ltd | プラズマ処理装置 |
JP5036092B2 (ja) * | 1999-03-24 | 2012-09-26 | 東京エレクトロン株式会社 | マイクロ波プラズマ処理装置 |
JP3723783B2 (ja) * | 2002-06-06 | 2005-12-07 | 東京エレクトロン株式会社 | プラズマ処理装置 |
DE10324751B4 (de) * | 2003-05-30 | 2009-01-22 | Infineon Technologies Ag | Verfahren zur Herstellung einer Halbleiter-Struktur mit einem Halbleitersubstrat und mit diesem Verfahren hergestellte Halbleiter-Struktur |
JP4563729B2 (ja) | 2003-09-04 | 2010-10-13 | 東京エレクトロン株式会社 | プラズマ処理装置 |
CN100492591C (zh) | 2003-09-04 | 2009-05-27 | 东京毅力科创株式会社 | 等离子处理装置 |
JP4093212B2 (ja) * | 2004-07-23 | 2008-06-04 | 東京エレクトロン株式会社 | プラズマ処理装置 |
JP4756540B2 (ja) * | 2005-09-30 | 2011-08-24 | 東京エレクトロン株式会社 | プラズマ処理装置と方法 |
-
2009
- 2009-02-10 KR KR1020107018236A patent/KR101157143B1/ko active IP Right Grant
- 2009-02-10 US US12/867,343 patent/US8967080B2/en active Active
- 2009-02-10 JP JP2009553415A patent/JP5243457B2/ja not_active Expired - Fee Related
- 2009-02-10 CN CN200980105252.8A patent/CN101953236A/zh active Pending
- 2009-02-10 WO PCT/JP2009/052200 patent/WO2009101927A1/ja active Application Filing
- 2009-02-12 TW TW98104401A patent/TWI402000B/zh not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0734253A (ja) * | 1993-07-20 | 1995-02-03 | Hitachi Ltd | マイクロ波プラズマ処理装置 |
JP2003151797A (ja) * | 2001-11-08 | 2003-05-23 | Sharp Corp | プラズマプロセス装置および処理装置 |
JP2004200307A (ja) * | 2002-12-17 | 2004-07-15 | Tokyo Electron Ltd | プラズマ処理装置 |
JP2007188722A (ja) * | 2006-01-12 | 2007-07-26 | Tokyo Electron Ltd | プラズマ処理装置 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013504176A (ja) * | 2009-09-08 | 2013-02-04 | 東京エレクトロン株式会社 | 安定した表面波プラズマソース |
TWI461114B (zh) * | 2009-09-08 | 2014-11-11 | Tokyo Electron Ltd | 安定之表面波電漿源 |
WO2011125524A1 (ja) * | 2010-03-31 | 2011-10-13 | 東京エレクトロン株式会社 | プラズマ処理装置用誘電体窓、プラズマ処理装置、およびプラズマ処理装置用誘電体窓の取り付け方法 |
US8988012B2 (en) | 2010-03-31 | 2015-03-24 | Tokyo Electron Limited | Dielectric window for plasma processing apparatus, plasma processing apparatus and method for mounting dielectric window for plasma processing apparatus |
JP2013016443A (ja) * | 2011-07-06 | 2013-01-24 | Tokyo Electron Ltd | アンテナ、誘電体窓、プラズマ処理装置及びプラズマ処理方法 |
KR101420078B1 (ko) | 2011-11-11 | 2014-07-17 | 도쿄엘렉트론가부시키가이샤 | 플라즈마 처리 장치용 유전체창 및 플라즈마 처리 장치 |
US9048070B2 (en) | 2011-11-11 | 2015-06-02 | Tokyo Electron Limited | Dielectric window for plasma treatment device, and plasma treatment device |
JP2015018685A (ja) * | 2013-07-10 | 2015-01-29 | 東京エレクトロン株式会社 | マイクロ波プラズマ処理装置 |
JP2015231050A (ja) * | 2014-06-03 | 2015-12-21 | 東京エレクトロン株式会社 | 上部誘電石英板及びスロットアンテナの基本概念 |
JP2018006343A (ja) * | 2016-06-30 | 2018-01-11 | 東京エレクトロン株式会社 | 表面波プラズマ源における操作不安定性検出のための方法 |
US10651017B2 (en) | 2016-06-30 | 2020-05-12 | Tokyo Electron Limited | Method for operation instability detection in a surface wave plasma source |
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