WO2020137145A1 - 成膜装置及び成膜方法 - Google Patents
成膜装置及び成膜方法 Download PDFInfo
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- WO2020137145A1 WO2020137145A1 PCT/JP2019/042617 JP2019042617W WO2020137145A1 WO 2020137145 A1 WO2020137145 A1 WO 2020137145A1 JP 2019042617 W JP2019042617 W JP 2019042617W WO 2020137145 A1 WO2020137145 A1 WO 2020137145A1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/50—Substrate holders
- C23C14/505—Substrate holders for rotation of the substrates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/3407—Cathode assembly for sputtering apparatus, e.g. Target
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/3464—Sputtering using more than one target
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/52—Controlling or regulating the coating process
Definitions
- the present invention relates to a film forming apparatus and a film forming method.
- an object of the present invention is to provide a film forming apparatus and a film forming method capable of forming a film on a substrate with high mass productivity and a more uniform film thickness distribution.
- a film forming apparatus includes a first target, a substrate holder, a vacuum container, a power source, and a gas supply mechanism.
- the substrate holder supports at least one substrate facing the first target, rotates about a first central axis, and rotates the substrate about a second central axis that is deviated from the first central axis. It is configured to be possible.
- the vacuum container houses the first target and the substrate holder.
- the power source supplies discharge power to the first target.
- the gas supply mechanism supplies a discharge gas to the vacuum container.
- the distance between the first central axis and the second central axis in the direction orthogonal to the first central axis is Ds
- the distance between the first central axis and the first target in the direction orthogonal to the first central axis is Ds.
- the distance from the center is Dt
- the radius of the first target is R
- the distance between the first target and the substrate in the direction of the first central axis is H
- the absolute value of the difference between Ds and Dt is A.
- the film forming apparatus may further include a second target arranged in parallel with the first target in a direction orthogonal to the first central axis.
- the distance between the first central axis and the center of the second target in the direction orthogonal to the first central axis is Dt′
- the radius of the second target is R′
- the radius in the direction of the first central axis is
- the distance between the second target and the substrate is H′ and the absolute value of the difference between Ds and Dt′ is A′, Ds+Dt′ ⁇ H′, A′ ⁇ R′, H′ ⁇ R′
- the relational expression is satisfied.
- film formation is performed under the condition that the second target, the substrate holder, and the substrate satisfy the above relationship in addition to the first target. Therefore, the mass productivity is high, and the film is formed on the substrate with a more uniform film thickness distribution.
- the sign of the difference between Ds and Dt may be opposite to the sign of the difference between Ds and Dt′.
- the power source may supply power to the first target different from that of the second target.
- the film is formed on the substrate with a more uniform film thickness distribution.
- one of the surface of the substrate, the surface of the first target, and the normal line to the surface of the second target may intersect with the first central axis.
- one of the surface of the substrate, the surface of the first target, and the normal line to the surface of the second target is adjusted so as to intersect the first central axis, so that a more uniform A film is formed on the substrate with a film thickness distribution.
- a film forming apparatus includes a plurality of targets, a substrate holder, a vacuum container, a power source, and a gas supply mechanism.
- the substrate holder supports at least one substrate facing the plurality of targets, rotates about a first central axis, and rotates the substrate about a second central axis that is deviated from the first central axis. Configured to be possible.
- the vacuum container accommodates the plurality of targets and the substrate holder.
- the power source supplies discharge power to the plurality of targets.
- the gas supply mechanism supplies a discharge gas to the vacuum container.
- the plurality of targets are arranged side by side in a direction orthogonal to the first central axis.
- the distance between the first central axis and the second central axis in the direction orthogonal to the first central axis is Ds
- the distance between the first central axis and the plurality of targets in the direction orthogonal to the first central axis is Ds.
- the distance between the center of any target is Dt
- the radius of the target is R
- the distance between the plurality of targets and the substrate in the direction of the first central axis is H
- the difference between Ds and Dt is When the absolute value is A, the relational expressions Ds+Dt ⁇ H, A ⁇ R, and H ⁇ R are satisfied.
- the film formation is performed under the condition that the first target, the substrate holder, and the plurality of substrates satisfy the above relationship, mass productivity is high, and the substrate is formed with a more uniform film thickness distribution. A film is formed on.
- a substrate holder that is housed in a vacuum container and rotates around a first central axis, wherein the substrate supported by the substrate holder is the first At least one of the substrates is supported by the substrate holder that rotates about a second central axis that is deviated from the one central axis.
- Discharge gas is supplied to the vacuum container.
- Discharge power is supplied to the first target facing the substrate holder and housed in the vacuum container.
- the distance between the first central axis and the second central axis in the direction orthogonal to the first central axis is Ds
- the distance between the first central axis and the first target in the direction orthogonal to the first central axis is Ds.
- the distance from the center is Dt
- the radius of the first target is R
- the distance between the first target and the substrate in the direction of the first central axis is H
- the absolute value of the difference between Ds and Dt is A
- the film is formed on the substrate under the condition that the relational expressions of Ds+Dt ⁇ H, A ⁇ R, and H ⁇ R are satisfied.
- the mass productivity is high and the film is formed on the substrate with a more uniform film thickness distribution. Is formed.
- a second target may be arranged in parallel in the vacuum container in a direction orthogonal to the first central axis, and discharge power may be supplied to the second target.
- the distance between the first central axis and the center of the second target in the direction orthogonal to the first central axis is Dt′
- the radius of the second target is R′
- the radius in the direction of the first central axis is
- the distance between the second target and the substrate is H′ and the absolute value of the difference between Ds and Dt′ is A′, Ds+Dt′ ⁇ H′, A′ ⁇ R′, H′ ⁇ R′
- the film is formed on the substrate under the condition that the relational expression is satisfied.
- the second target, the substrate holder, and the substrate in addition to the first target, form a film under the conditions that satisfy the above relationship, mass productivity is high and a more uniform film is formed.
- a film is formed on the substrate with a thickness distribution.
- the present invention provides a film forming apparatus and a film forming method capable of forming a film on a substrate with a more uniform film thickness distribution with high mass productivity.
- FIG. 1A is a schematic top view of the film forming apparatus according to this embodiment.
- FIG. 1B is a schematic sectional view of the film forming apparatus according to this embodiment.
- FIG. 6A is a schematic top view of a film forming apparatus according to Modification 1 of this embodiment.
- FIG. 1B is a schematic sectional view of the film forming apparatus according to this embodiment. It is a schematic diagram of film thickness distribution of a film formed on a substrate when a multi-source target is used. It is a schematic top view of the film-forming apparatus which concerns on the modification 2 of this embodiment. It is a schematic sectional drawing of the film-forming apparatus which concerns on the modification 3 of this embodiment.
- FIG. 1A is a schematic top view of the film forming apparatus according to this embodiment.
- FIG. 1B is a schematic sectional view of the film forming apparatus according to the present embodiment.
- FIG. 1A shows a cross section taken along line B1-B2 of FIG.
- FIG. 1B shows a cross section taken along line A1-A2 of FIG.
- the film forming apparatus 1 is a so-called deposition-up type sputtering apparatus.
- the film forming apparatus 1 includes a vacuum container 10, a target 20 (first target), a substrate holder 30, a support 40, a power source 60, a gas supply source 70, and an exhaust mechanism 71.
- the substrate holder 30 is not limited to one, and a plurality of substrates 90 can be installed.
- the substrate 90 is, for example, a semiconductor wafer, a glass substrate, a quartz substrate, or the like.
- the vacuum container 10 is a container that can maintain a reduced pressure state.
- the vacuum container 10 has a container body 101 and a lid 102.
- the lid portion 102 covers the container body 101 and tightly closes the container body 101.
- its outer shape is, for example, a rectangle.
- the vacuum container 10 houses the target 20, the substrate holder 30, the support base 40, and the like.
- a gas supply source 70 is attached to the vacuum container 10.
- the gas supply source 70 supplies a gas for plasma discharge into the vacuum container 10.
- the gas is, for example, an inert gas (Ar, Ne, He, etc.), oxygen (O), nitrogen (N), or the like.
- the gas supply source 70 may be provided with a gas flow meter for adjusting the gas flow rate.
- the vacuum container 10 may be provided with a pressure gauge for measuring the internal pressure.
- an exhaust mechanism 71 such as a vacuum pump is connected to the vacuum container 10.
- the exhaust mechanism 71 exhausts the atmosphere of the vacuum container 10 to maintain the vacuum state. Further, the gas introduced into the vacuum container 10 is exhausted by the exhaust mechanism 71, and the inside of the vacuum container 10 is maintained at a predetermined pressure.
- the target 20 (sputtering target) is joined to a metal backing plate 21.
- the planar shapes of the target 20 and the backing plate 21 are, for example, circular.
- the target 20 is fixed to a support base 40 arranged below the vacuum container 10.
- a magnet (not shown) may be arranged on the back surface of the target 20. Thereby, magnetron sputtering is realized.
- the surface (target surface) of the target 20 faces the substrate holder 30.
- the target material is appropriately selected according to the composition of the layer formed on the substrate 90.
- the material of the target is not particularly limited, and is, for example, silicon (Si), niobium (Nb), tantalum (Ta), or the like.
- the substrate holder 30 includes a rotation plate 301, a rotation mechanism 302, a substrate support 311, and a rotation mechanism 312.
- the substrate holder 30 faces the target 20.
- the rotating plate 301 has a circular plan shape.
- the rotating plate 301 is rotated (rotated) about the central axis 300 of the rotating plate 301 by the rotating mechanism 302. Further, the rotating plate 301 is provided with a plurality of substrate support members 311. The plurality of substrate support members 311 face the target 20.
- twelve substrate support members 311 are arranged around the central axis 300 (first central axis) of the substrate holder 30.
- the plane shape of the substrate support 311 is designed according to the plane shape of the substrate 90, and is, for example, a circle.
- the distances from the central axes 300 of the plurality of substrate support members 311 are the same.
- the rotation plate 301 is provided with a rotation mechanism 312 that rotates (rotates) the substrate support 311.
- the substrate support tool 311 rotates about a central axis 310 that is bent from the central axis 300.
- the substrate holder 30 can support one or more substrates 90.
- the substrate 90 supported by the substrate support 311 faces the target 20.
- the central axis 310 also serves as the central axis around which the substrate 90 rotates. That is, the substrate 90 rotates about the central axis 310 by the rotation mechanism 312.
- each of the plurality of substrates 90 is located at the same distance from the central axis 300 of the substrate holder 30. Accordingly, when the substrate holder 30 rotates about the central axis 300, each of the plurality of substrates 90 revolves around the central axis 300. At this time, each of the plurality of substrates 90 passes through the same path on the target 20.
- the power source 60 supplies power to the target 20 via the backing plate 21.
- the power is DC power, pulse DC power, RF power, or the like.
- the target 20 serves as a cathode and the vacuum container 10 or the like serves as an anode (or ground).
- a matching circuit (not shown) may be provided between the power source 60 and the target 20.
- a shutter mechanism that closes the gap between the target 20 and the substrate 90 may be provided on the target 20.
- the film forming apparatus 1 may include an oxygen plasma source that exposes the film formed on the substrate 90 to oxygen plasma and oxidizes the film to form an oxide film.
- the distance between the central axis 300 and the central axis 310 in the direction orthogonal to the central axis 300 is Ds
- the distance between the central axis 300 and the center of the target 20 in the direction orthogonal to the central axis 300 is Ds.
- At least one substrate 90 is supported by the substrate holder 30 and revolves around the central axis 300 while rotating about the central axis 310.
- the angular velocity at which the substrate 90 rotates about the central axis 310 is set to be higher than the angular velocity at which the substrate 90 revolves around the central axis 300.
- the vacuum container 10 is supplied with a discharge gas such as Ar from a gas supply source 70, and the target 20 is supplied with discharge power from a power source 60.
- a discharge gas such as Ar from a gas supply source 70
- the target 20 is supplied with discharge power from a power source 60.
- the target 20 is sputtered by the plasma, and a film is formed on the substrate 90 under the conditions satisfying the expressions (1) to (3).
- the amount of sputtered particles flying from the target 20 depends on the emission angle at which the sputtered particles fly out of the target 20.
- the amount of sputtered particles is greatest in the direction of the normal line of the target 20, and gradually decreases as it deviates from the normal line.
- the substrate holder 30 can hold a plurality of substrates 90, sputtering film formation can be performed on the plurality of substrates 90 in one batch, which improves mass productivity.
- the target 20 is not limited to one, and a plurality of targets (multi-targets) may be used.
- FIG. 2A is a schematic top view of the film forming apparatus according to the first modification of the present embodiment.
- FIG. 2B is a schematic sectional view of the film forming apparatus according to this embodiment.
- FIG. 2A shows a cross section taken along line B1-B2 of FIG.
- FIG. 2B shows a cross section taken along line A1-A2 of FIG.
- the film forming apparatus 2 includes a target 20B (second target) arranged in parallel with the target 20A in a direction orthogonal to the central axis 300.
- the target 20B is joined to a metal backing plate 21B.
- the planar shapes of the target 20B and the backing plate 21B are, for example, circular.
- the target 20B is fixed to the support base 40.
- a magnet (not shown) may be arranged on the back surface of the target 20B.
- the surface (the surface to be sputtered) of the target 20B faces the substrate holder 30.
- the power source 60B supplies power to the target 20B via the backing plate 21B.
- the backing plate 21 corresponds to the backing plate 21A
- the power source 60 corresponds to the power source 60A.
- the direction in which the targets 20A and 20B are arranged is parallel to a part of the inner wall of the vacuum container 10.
- the targets 20A and 20B are arranged such that when a line is drawn from the central axis 300 to an arbitrary position on the surface of the target 20B, a part of the drawn line overlaps the surface of the target 20A.
- the target 20A is located closer to the central axis 300 than the line through which the substrate 90 passes, and the target 20B is located closer to the vacuum container 10 than the line.
- the substrate 90 moves (revolves) around the central axis 300 while overlapping both the targets 20A and 20B.
- the direction in which the targets 20A and 20B are arranged is not limited to the Y-axis direction and may be arranged in a direction intersecting with the Y-axis direction.
- the distance between the center axis 300 and the center of the target 20B in the direction orthogonal to the center axis 300 is Dt′
- the radius of the target 20B is R′
- the target 20B in the direction of the center axis 300 is Dt′
- the absolute value of the difference (Ds ⁇ Dt′) between Ds and Dt′ is A′
- Ds+Dt′ ⁇ H′ in addition to the equations (1) to (3)
- Ds+Dt′ ⁇ H′ (4) Expression A′ ⁇ R′ (5)
- H' is substantially the same as H.
- the sign of the difference between Ds and Dt is opposite to the sign of the difference between Ds and Dt'. For example, if the sign of Ds-Dt' is negative, the sign of Ds-Dt is positive.
- Discharge power is supplied from the power source 60B to the target 20B.
- the target 20B in addition to the target 20A is sputtered by the plasma, and a film is formed on the substrate 90 under the condition that the expressions (1) to (6) are satisfied.
- the power supplied from the power source 60A to the target 20A may be different from the power supplied from the power source 60B to the target 20B.
- the power supplied by the power source 60B is set higher than the power supplied by the power source 60A.
- the power supplied by the power source 60B is set to about twice the power supplied by the power source 60A.
- FIG. 3 is a schematic view of the film thickness distribution of the film formed on the substrate when the multi-target is used.
- the horizontal axis is the distance r from the center of the substrate 90, and the vertical axis is the film thickness (standard value).
- the film thickness distribution that occurs when only the target 20A is used is corrected by the film thickness distribution that occurs when using the target 20B, and the thickness of the film formed on the substrate 90 becomes more uniform. Become.
- the film thickness distribution when the target 20A is used has a film thickness distribution that is sloping down from the center of the substrate 90 toward the substrate edge.
- the film thickness distribution is a film thickness distribution that rises to the right from the center of the substrate 90 toward the substrate edge.
- the film thickness distribution formed when only the target 20A is used is corrected by the film thickness distribution formed when the target 20B is used, and the thickness of the film formed on the substrate 90. Becomes more uniform. In FIG. 3, this thickness is shown as 20A+20B.
- FIG. 4 is a schematic top view of a film forming apparatus according to Modification 2 of the present embodiment.
- FIG. 4 corresponds to the cross section taken along the line B1-B2 of FIG.
- the number of sets of targets 20A and 20B fixed to the support base 40 is not limited to one set.
- the film forming apparatus 3 includes two sets of targets 20A and 20B.
- another set of targets 20A and 20B is arranged in a direction orthogonal to the direction in which one set of targets 20A and 20B is arranged, and the directions in which the respective sets of targets 20A and 20B are arranged are parallel to each other. ..
- the film thickness distribution that occurs when one set of targets 20A and 20B is used is corrected by the film thickness distribution that occurs when another set of targets 20A and 20B is used.
- the thickness of the film formed on the substrate 90 becomes more uniform. Further, by changing the target material for each set, films mixed with materials or films different in material can be alternately stacked.
- FIG. 5 is a schematic cross-sectional view of a film forming apparatus according to Modification 3 of this embodiment.
- one of the normals to the surface of the substrate 90 and the surface of the target 20 intersects the central axis 300.
- the respective normals are inclined toward the central axis 300.
- Any of the normals to the surfaces of the targets 20A and 20B may intersect the central axis 300.
- any one of the surface of the substrate 90, the surface of the target 20, and the normals to the surfaces of the targets 20A and 20B is adjusted so as to intersect the central axis 300.
- a film is formed on the substrate 90 with a more uniform film thickness distribution.
- Table 1 shows the conditions and results of Examples 1 to 3 and Comparative Examples 1 and 2.
- a Si wafer substrate having a diameter of about 300 mm was used as the substrate 90.
- the film thickness distribution (%) is a value obtained by expressing the formula ⁇ (Dmax-Dmin)/(Dmax+Dmin) as a percentage, where Dmax is the maximum film thickness of the film formed on the Si wafer substrate and Dmin is the minimum film thickness. Defined in.
- the target value of the film thickness distribution is, for example, -1% or more and 1% or less.
- the diameter of each target was 290 mm.
- the discharge pressure was 1.5 Pa.
- the discharge power used was DC power.
- Target 20A material Si Discharge gas: Ar/O 2 Film: SiO 2 film
- Target 20A material Si Discharge gas: Ar/O 2 Material of target 20B: Nb Discharge gas: Ar/O 2 Film: Laminated film of SiO 2 film and NbO 2 film Power ratio: 0.67 (Example 2)
- Target 20A material Si Discharge gas: Ar/O 2 Material of target 20B: Nb Discharge gas: Ar/O 2 Film: Laminated film of SiO 2 film and NbO 2 film Power ratio: 0.75
- Target 20A material Si Discharge gas: Ar/O 2 Film: SiO 2 film
- Target 20A material Si Discharge gas: Ar/O 2 Film: SiO 2 film
- Comparative Example 1 Although the expression (1) is satisfied, A:100 mm and R:145 mm, and the expression (2) is not satisfied. At this time, the film thickness distribution was ⁇ 6.9%. Further, in Comparative Example 2, although the expression (1) is satisfied, H:100 mm and R:145 mm, and the expression (3) is not satisfied. At this time, the film thickness distribution was ⁇ 3.1%. Therefore, it was found that it is necessary to satisfy the expressions (2) and (3) in addition to the expression (1).
- Examples 1 to 3 satisfy the expressions (1) to (6).
- the film thickness distribution was -1% or more and 1% or less, and was ⁇ 0.5%.
- the film thickness distribution was ⁇ 0.27%, and a better film thickness distribution than in Example 1 was obtained.
- the electric power supplied to the target 20B is increased as compared with the second embodiment. In this case, the film thickness distribution was ⁇ 0.18%, which was even better than in Example 2.
- the film thickness distribution exceeded 1%, but in each of Examples 1 to 3, the film thickness distribution was lower than 1%. It was found that a uniform film thickness distribution was obtained.
- Film forming apparatus 10 Vacuum container 20, 20A, 20B... Target 21, 21A, 21B... Backing plate 30... Substrate holder 40... Support base 60, 60A, 60B... Electric power source 70... Gas supply Source 71... Exhaust mechanism 90... Substrate 101... Container main body 102... Lid 300... Central axis 301... Rotating plate 302... Rotating mechanism 310... Central axis 311... Substrate support 312... Rotating mechanism
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Abstract
Description
上記基板ホルダは、上記第1ターゲットに対向する基板を少なくとも1つ支持し、第1中心軸を中心に回転し、上記基板が上記第1中心軸とは反れた第2中心軸を中心に回転可能に構成されている。
上記真空容器は、上記第1ターゲットと、上記基板ホルダとを収容する。
上記電力源は、上記第1ターゲットに放電電力を供給する。
上記ガス供給機構は、上記真空容器に放電ガスを供給する。
上記第1中心軸と直交する方向における上記第1中心軸と上記第2中心軸との間の距離をDs、上記第1中心軸と直交する方向における上記第1中心軸と上記第1ターゲットの中心との間の距離をDt、上記第1ターゲットの半径をR、上記第1中心軸の方向における上記第1ターゲットと上記基板との間の距離をH、DsとDtとの差の絶対値をAとした場合、Ds+Dt≧H、A≧R、H≧Rの関係式を満たしている。
上記第1中心軸と直交する方向における上記第1中心軸と上記第2ターゲットの中心との間の距離をDt'、上記第2ターゲットの半径をR'、上記第1中心軸の方向における上記第2ターゲットと上記基板との間の距離をH'、DsとDt'との差の絶対値をA'とした場合、Ds+Dt'≧H'、A'≧R'、H'≧R'の関係式を満たしている。
上記基板ホルダは、上記複数のターゲットに対向する基板を少なくとも1つ支持し、第1中心軸を中心に回転し、上記基板が上記第1中心軸とは反れた第2中心軸を中心に回転可能に構成される。
上記真空容器は、上記複数のターゲットと、上記基板ホルダとを収容する。
上記電力源は、上記複数のターゲットに放電電力を供給する。
上記ガス供給機構は、上記真空容器に放電ガスを供給する。
上記複数のターゲットは、上記第1中心軸と直交する方向において並設されている。
上記第1中心軸と直交する方向における上記第1中心軸と上記第2中心軸との間の距離をDs、上記第1中心軸と直交する方向における上記第1中心軸と上記複数のターゲットの任意のターゲットの中心との間の距離をDt、上記ターゲットの半径をR、上記第1中心軸の方向における上記複数のターゲットと上記基板との間の距離をH、DsとDtとの差の絶対値をAとした場合、Ds+Dt≧H、A≧R、H≧Rの関係式を満たしている。
上記真空容器に放電ガスが供給される。
上記基板ホルダに対向し、上記真空容器に収容された第1ターゲットに放電電力が供給される。
上記第1中心軸と直交する方向における上記第1中心軸と上記第2中心軸との間の距離をDs、上記第1中心軸と直交する方向における上記第1中心軸と上記第1ターゲットの中心との間の距離をDt、上記第1ターゲットの半径をR、上記第1中心軸の方向における上記第1ターゲットと上記基板との間の距離をH、DsとDtとの差の絶対値をAとした場合、Ds+Dt≧H、A≧R、H≧Rの関係式を満たす条件下で上記基板に成膜が行われる。
上記第1中心軸と直交する方向における上記第1中心軸と上記第2ターゲットの中心との間の距離をDt'、上記第2ターゲットの半径をR'、上記第1中心軸の方向における上記第2ターゲットと上記基板との間の距離をH'、DsとDt'との差の絶対値をA'とした場合、Ds+Dt'≧H'、A'≧R'、H'≧R'の関係式を満たす条件下で上記基板に成膜が行われる。
Ds+Dt≧H・・・(1)式
A≧R ・・・(2)式
H≧R ・・・(3)式
の関係式を満たすように、基板ホルダ30、ターゲット20、及び基板90が配置されている。
Ds+Dt'≧H'・・・(4)式
A'≧R' ・・・(5)式
H'≧R' ・・・(6)式
の関係式を満たすように、基板ホルダ30、ターゲット20A、20B、及び基板90が配置されている。H'は、Hと実質的に同じである。また、DsとDtとの差の符号は、DsとDt'との差の符号と反対になる。例えば、Ds-Dt'の符号が負の場合、Ds-Dtの符号は正である。
放電ガス:Ar/O2
膜:SiO2膜
放電ガス:Ar/O2
ターゲット20Bの材料:Nb
放電ガス:Ar/O2
膜:SiO2膜とNbO2膜との積層膜
パワー比:0.67
(実施例2)
放電ガス:Ar/O2
ターゲット20Bの材料:Nb
放電ガス:Ar/O2
膜:SiO2膜とNbO2膜との積層膜
パワー比:0.75
放電ガス:Ar/O2
膜:SiO2膜
放電ガス:Ar/O2
膜:SiO2膜
10…真空容器
20、20A、20B…ターゲット
21、21A、21B…バッキングプレート
30…基板ホルダ
40…支持台
60、60A、60B…電力源
70…ガス供給源
71…排気機構
90…基板
101…容器本体
102…蓋部
300…中心軸
301…回転プレート
302…回転機構
310…中心軸
311…基板支持具
312…回転機構
Claims (8)
- 第1ターゲットと、
上記第1ターゲットに対向する基板を少なくとも1つ支持し、第1中心軸を中心に回転し、前記基板が前記第1中心軸とは反れた第2中心軸を中心に回転可能に構成された基板ホルダと、
前記第1ターゲットと、前記基板ホルダとを収容する真空容器と、
前記第1ターゲットに放電電力を供給する電力源と、
前記真空容器に放電ガスを供給するガス供給機構と
を具備し、
前記第1中心軸と直交する方向における前記第1中心軸と前記第2中心軸との間の距離をDs、
前記第1中心軸と直交する方向における前記第1中心軸と前記第1ターゲットの中心との間の距離をDt、
前記第1ターゲットの半径をR、
前記第1中心軸の方向における前記第1ターゲットと前記基板との間の距離をH、
DsとDtとの差の絶対値をAとした場合、
Ds+Dt≧H、A≧R、H≧Rの関係式を満たす
成膜装置。 - 請求項1に記載の成膜装置であって、
前記第1中心軸と直交する方向において前記第1ターゲットに並設された第2ターゲットをさらに具備し、
前記第1中心軸と直交する方向における前記第1中心軸と前記第2ターゲットの中心との間の距離をDt'、
前記第2ターゲットの半径をR'、
前記第1中心軸の方向における前記第2ターゲットと前記基板との間の距離をH'、
DsとDt'との差の絶対値をA'とした場合、
Ds+Dt'≧H'、A'≧R'、H'≧R'の関係式を満たす
成膜装置。 - 請求項2に記載の成膜装置であって、
DsとDtとの差の符号は、DsとDt'との差の符号と反対になっている
成膜装置。 - 請求項2または3に記載の成膜装置であって、
前記電力源は、前記第1ターゲットに前記第2ターゲットとは異なる電力を供給する
成膜装置。 - 請求項2~4のいずれか1つに記載の成膜装置であって、
前記基板の表面、前記第1ターゲットの表面、及び前記第2ターゲットの表面に対する法線のいずれかが前記第1中心軸と交差する
成膜装置。 - 複数のターゲットと、
前記複数のターゲットに対向する基板を少なくとも1つ支持し、第1中心軸を中心に回転し、前記基板が前記第1中心軸とは反れた第2中心軸を中心に回転可能に構成された基板ホルダと、
前記複数のターゲットと、前記基板ホルダとを収容する真空容器と、
前記複数のターゲットに放電電力を供給する電力源と、
前記真空容器に放電ガスを供給するガス供給機構と
を具備し、
前記複数のターゲットは、前記第1中心軸と直交する方向において並設され、
前記第1中心軸と直交する方向における前記第1中心軸と前記第2中心軸との間の距離をDs、
前記第1中心軸と直交する方向における前記第1中心軸と前記複数のターゲットの任意のターゲットの中心との間の距離をDt、
前記ターゲットの半径をR、
前記第1中心軸の方向における前記複数のターゲットと前記基板との間の距離をH、
DsとDtとの差の絶対値をAとした場合、
Ds+Dt≧H、A≧R、H≧Rの関係式を満たす
成膜装置。 - 真空容器に収容され第1中心軸を中心に回転する基板ホルダであって、前記基板ホルダに支持される基板が前記第1中心軸とは反れた第2中心軸を中心に回転する前記基板ホルダに前記基板を少なくとも1つ支持し、
前記真空容器に放電ガスを供給し、
前記基板ホルダに対向し、前記真空容器に収容された第1ターゲットに放電電力を供給し、
前記第1中心軸と直交する方向における前記第1中心軸と前記第2中心軸との間の距離をDs、
前記第1中心軸と直交する方向における前記第1中心軸と前記第1ターゲットの中心との間の距離をDt、
前記第1ターゲットの半径をR、
前記第1中心軸の方向における前記第1ターゲットと前記基板との間の距離をH、
DsとDtとの差の絶対値をAとした場合、
Ds+Dt≧H、A≧R、H≧Rの関係式を満たす条件下で前記基板に成膜を行う
成膜方法。 - 請求項7に記載の成膜方法であって、
前記真空容器内で前記第1中心軸と直交する方向において前記第1ターゲットに第2ターゲットを並設し、
前記第2ターゲットに放電電力を供給し、
前記第1中心軸と直交する方向における前記第1中心軸と前記第2ターゲットの中心との間の距離をDt'、
前記第2ターゲットの半径をR'、
前記第1中心軸の方向における前記第2ターゲットと前記基板との間の距離をH'、
DsとDt'との差の絶対値をA'とした場合、
Ds+Dt'≧H'、A'≧R'、H'≧R'の関係式を満たす条件下で前記基板に成膜を行う
成膜方法。
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| US17/278,083 US20210348263A1 (en) | 2018-12-28 | 2019-10-30 | Deposition apparatus and deposition method |
| KR1020217005741A KR20210032519A (ko) | 2018-12-28 | 2019-10-30 | 막형성 장치 및 막형성 방법 |
| JP2020562869A JPWO2020137145A1 (ja) | 2018-12-28 | 2019-10-30 | 成膜装置及び成膜方法 |
| CN201980056231.5A CN112639158A (zh) | 2018-12-28 | 2019-10-30 | 成膜装置以及成膜方法 |
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|---|---|---|---|---|
| JPH04325672A (ja) * | 1991-04-25 | 1992-11-16 | Matsushita Electric Ind Co Ltd | スパッタリング装置 |
| JPH08239760A (ja) * | 1995-03-01 | 1996-09-17 | Toshiba Corp | スパッタリング装置およびスパッタリング方法 |
| JP2011097041A (ja) * | 2009-10-02 | 2011-05-12 | Showa Denko Kk | 半導体素子の製造方法 |
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| JPH07331432A (ja) * | 1994-06-09 | 1995-12-19 | Matsushita Electric Ind Co Ltd | 誘電体薄膜の製造方法及びその製造装置 |
| JP4223614B2 (ja) * | 1999-01-12 | 2009-02-12 | キヤノンアネルバ株式会社 | スパッタリング方法及び装置及び電子部品の製造方法 |
| WO2001044534A1 (en) * | 1999-12-16 | 2001-06-21 | Hitachi, Ltd | Method and apparatus for thin film deposition |
| JP2001207257A (ja) * | 2000-01-24 | 2001-07-31 | Matsushita Electric Ind Co Ltd | Gmr膜の製造方法及び製造装置 |
| JP4623837B2 (ja) * | 2001-01-29 | 2011-02-02 | キヤノンアネルバ株式会社 | マグネトロンスパッタリング装置 |
| TWI384472B (zh) * | 2005-01-19 | 2013-02-01 | 愛發科股份有限公司 | 濺鍍裝置及成膜方法 |
| JP4974582B2 (ja) * | 2006-05-08 | 2012-07-11 | 株式会社アルバック | 成膜装置 |
| JP2011089146A (ja) * | 2009-10-20 | 2011-05-06 | Panasonic Corp | スパッタリング装置およびスパッタリング方法 |
| JP2013147677A (ja) | 2010-04-28 | 2013-08-01 | Ulvac Japan Ltd | 成膜装置 |
| WO2013183202A1 (ja) * | 2012-06-08 | 2013-12-12 | キヤノンアネルバ株式会社 | スパッタリング装置およびスパッタリング成膜方法 |
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|---|---|---|---|---|
| JPH04325672A (ja) * | 1991-04-25 | 1992-11-16 | Matsushita Electric Ind Co Ltd | スパッタリング装置 |
| JPH08239760A (ja) * | 1995-03-01 | 1996-09-17 | Toshiba Corp | スパッタリング装置およびスパッタリング方法 |
| JP2011097041A (ja) * | 2009-10-02 | 2011-05-12 | Showa Denko Kk | 半導体素子の製造方法 |
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