WO2012036499A2 - 박막 증착 장치 - Google Patents
박막 증착 장치 Download PDFInfo
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- WO2012036499A2 WO2012036499A2 PCT/KR2011/006843 KR2011006843W WO2012036499A2 WO 2012036499 A2 WO2012036499 A2 WO 2012036499A2 KR 2011006843 W KR2011006843 W KR 2011006843W WO 2012036499 A2 WO2012036499 A2 WO 2012036499A2
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- susceptor
- gas
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- source gas
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—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 characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—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 characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45502—Flow conditions in reaction chamber
- C23C16/45508—Radial flow
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—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 deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/301—AIII BV compounds, where A is Al, Ga, In or Tl and B is N, P, As, Sb or Bi
- C23C16/303—Nitrides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—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 characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45514—Mixing in close vicinity to the substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02538—Group 13/15 materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/0262—Reduction or decomposition of gaseous compounds, e.g. CVD
Definitions
- the present invention relates to a thin film deposition apparatus used for depositing a thin film on a substrate in the manufacture of semiconductors and the like.
- CVD Chemical Vapor Deposition
- PVD Physical Vapor Deposition
- CVD is a technique in which a gaseous mixture is chemically reacted on a heated substrate surface to deposit a product on the substrate surface.
- the CVD method is based on the type of material used as the precursor, the pressure in the process, the energy transfer method required for the reaction, and the like.
- Organic CVD method and the like.
- MOCVD is widely used for single crystal growth of nitride semiconductors for light emitting diodes.
- the MOCVD method is a method of depositing a metal thin film on a substrate by vaporizing an organometallic compound, which is a raw material in a liquid state, in a gaseous state, and then supplying the vaporized source gas to a substrate to be deposited and contacting it with a high temperature substrate.
- an injection method is widely employed as a method for supplying a source gas to a substrate.
- the injection method is a method of introducing a source gas into the upper center of the susceptor through an injector installed in the center of the chamber, and then spraying the introduced source gas toward the periphery of the susceptor in a horizontal direction to supply the substrates on the susceptor.
- the source gas injected from the injector to the susceptor passes through a gas entry region adjacent to the injector and proceeds to a growth region in which effective deposition is performed on the substrate.
- the flow of source gas is uniform within the gas entry zone and at least partially decomposes. At this time, since the source gas is decomposed in the gas entry region, an unnecessary thin film may be deposited on the susceptor portion corresponding to the gas entry region.
- the size of the chamber must be increased, and at the same time, the supply of source gas must be increased, thereby increasing the gas entry area.
- the amount of source gas consumed increases as the unnecessary thin film is deposited in the gas entry area, thereby increasing the waste of the source gas.
- the unnecessary thin film deposited on the susceptor portion may fall off during the deposition process and affect the substrate, and thus need to be maintained in advance.
- Increasing the gas entry area also increases the possibility of depositing unnecessary thin films in the gas entry area. This leads to a shorter PM (Preventive Maintenance) cycle.
- the diameter of the susceptor needs to be larger and larger.
- the amount of source gas used must be increased, but this decreases the process efficiency.
- the usage amount of the source gas increases, a problem may occur in that the amount of the source gas remaining in the particle state without reacting to the deposition surface of the substrate increases.
- An object of the present invention is to provide a thin film deposition apparatus that can prevent unnecessary thin film deposition in the gas entry area, and reduce the waste of source gas due to unnecessary thin film deposition and increase the PM cycle even if the size of the chamber is enlarged.
- an object of the present invention is to provide a thin film deposition apparatus that can ensure the deposition uniformity of the substrate even if the susceptor is enlarged, and the source gas consumption and particles can be suppressed.
- a thin film deposition apparatus for achieving the above object, the chamber having an internal space in which the deposition process is performed; A susceptor disposed in the chamber, the susceptor directly supporting a plurality of substrates along a center circumference thereof or supporting a substrate holder having one or more substrates disposed thereon; The first and second source gases are supplied to the upper center of the susceptor in a separated state, and the separated first and second source gases are sprayed toward and around the susceptor through source gas injection holes arranged up and down, respectively.
- a source gas supply unit supplying the first and second source gases to substrates on a susceptor; And a susceptor support provided at a lower side of the susceptor to support a center of the susceptor and having an additional gas supply unit for injecting additional gas introduced from the outside of the chamber to an upper surface of the susceptor.
- the material decomposed in the first and second source gas Contact with the susceptor portion of the entry area may be blocked. Accordingly, the unnecessary thin film may be prevented from being deposited on the susceptor portion of the gas entry region.
- waste of source gas due to unnecessary thin film deposition can be reduced, and the PM cycle can be shortened.
- the present invention since additional gas is supplied from the center region of the susceptor to the upper part of the susceptor, even if the diameter of the susceptor is increased, the uniformity of deposition on the substrate can be secured while efficiently using the source gas. In addition, a phenomenon in which part of the source gas remains in the particle state without reacting to the deposition surface of the substrate can be suppressed. In addition, since the material decomposed from the source gas in the region adjacent to the source gas injection holes is not in contact with the central region of the susceptor, unnecessary thin film can be prevented from being deposited.
- FIG. 1 is a side cross-sectional view of a thin film deposition apparatus according to an embodiment of the present invention.
- Figure 2 is an exploded perspective view showing an example of the injection cap coupled to the susceptor support in the additional gas supply of Figure 1;
- FIG. 3 is an assembly view of FIG.
- Figure 4 is an exploded perspective view showing another example of the injection cap coupled to the susceptor support in the additional gas supply of Figure 1;
- FIG. 5 is an assembly view of FIG. 4.
- FIG. 6 is a side cross-sectional view of a thin film deposition apparatus according to another embodiment of the present invention.
- FIG. 7 is a side cross-sectional view illustrating the susceptor and the additional gas supply unit in FIG. 6; FIG.
- FIG. 8 is a plan view of the susceptor and the additional gas supply in FIG. 6;
- FIG. 9 is a side cross-sectional view illustrating an example in which a gas guide part is provided in the additional gas supply part illustrated in FIG.
- FIG. 1 is a block diagram of a thin film deposition apparatus according to an embodiment of the present invention.
- the thin film deposition apparatus 100 is a device for depositing a thin film on a substrate 10, and includes a chamber 110, a susceptor 120, a susceptor support 130, and a source gas supply unit. 140, and an additional gas supply unit 150.
- the substrate 10 may be a wafer or a glass substrate.
- the chamber 110 has an internal space in which a deposition process is performed.
- the chamber 110 includes a chamber body 111 having an upper opening and a top lid 112 covering the upper opening of the chamber body 111.
- the lower surface of the top lid 112 may be provided with a ceiling made of quartz or the like.
- the top lead 112 may be lowered during the deposition process to close the upper opening of the chamber body 111, and the upper lid 112 may be lifted during the loading or unloading of the substrate 10 to open the upper opening of the chamber body 111. .
- the susceptor 120 is disposed in the chamber 10, and supports the plurality of substrates 10 along the center circumference of the upper surface. This is to deposit thin films on more substrates 10 at once for mass production.
- the plurality of substrate seating parts 121 may be uniformly distributed around the center of the susceptor 120.
- the substrates 10 may be seated and supported on the substrate mounting parts 121, respectively.
- a plurality of substrate substrate holders may be uniformly distributed around the center of the susceptor 120. Each substrate holder receives and supports at least one substrate on the upper surface, respectively.
- the susceptor support 130 is installed to support the center of the susceptor 120 at the lower side of the susceptor 120.
- the susceptor support 130 has an additional gas supply unit 150.
- the additional gas supply unit 150 injects additional gas introduced from the outside of the chamber 110 to the upper surface of the susceptor 120.
- the additional gas supply unit 150 prevents unnecessary thin films from being deposited on the susceptor 120 corresponding to the gas entry region.
- the susceptor support 130 enables rotation of the susceptor 120 as it is rotated by the rotation driving mechanism 101.
- the lower portion of the susceptor support 130 may be drawn out of the chamber 110, and the susceptor support 130 may be rotated by the rotation driving mechanism 101 connected to the drawn portion.
- the susceptor support 130 is rotated, the susceptor 120 is rotatable together.
- the substrate holders may also be rotatably installed by gas cushions or the like. This is to ensure that the source gas injected from the upper center of the susceptor 120 is evenly supplied to all the substrates 10 on the susceptor 120 during the deposition process.
- the susceptor 120 is heated by a heater (not shown) during the deposition process to allow the substrates 10 supported on the upper surface to be heated.
- the source gas supply unit 140 receives the first and second source gases separated from each other to the upper center of the susceptor 120, and then source gas injection holes 141a arranged up and down. Each of them is sprayed toward the susceptor 120 around the 141b. Accordingly, the first and second source gases may be supplied to the substrates 10 on the susceptor 120.
- the source gas supply unit 140 may be configured to spray the first and second source gases in a horizontal direction parallel to the upper surface of the susceptor 120.
- the present invention is not limited thereto, and the source gas supply unit 140 may be sprayed in a direction inclined downward in a range in which the first and second source gases may be smoothly supplied to the substrates 10 on the susceptor 120. Can be configured.
- the source gas supply unit 140 may include supply lines 142a and 142b for supplying the first and second source gases in a state separated from each other.
- the supply lines 142a and 142b extend through the top lead 112 to the upper center of the susceptor 120, and the source gas injection holes 141a and 141b formed at the extended ends are arranged vertically. It may be made of a bent structure.
- the first and second source gases injected from the source gas supply unit 140 pass through the gas entrance regions adjacent to the source gas injection holes 141a and 141b to the growth region in which the effective deposition on the substrate 10 is performed. do.
- the flow of the first and second source gases is uniform within the gas entry zone and at least partially decomposes to descend to the top of the susceptor 120.
- the additional gas is injected from the additional gas supply unit 150 to the upper surface of the susceptor 120 flows from the gas entry region to the growth region.
- the material decomposed in the first and second source gases is induced to flow to the growth region without being lowered to the upper surface of the susceptor 120 by the additional gas.
- the additional gas supply unit 150 the gas flow path 151 formed in the susceptor support 130 so that the additional gas is introduced from the outside of the chamber 110, and the additional gas introduced through the gas flow path 151 It may include an additional gas injection port 152 to inject to the upper surface of the susceptor 120.
- the additional gas injection hole 152 may be formed to be connected to the gas flow path 151 on the side of the susceptor support 130. That is, the outlet of the gas passage 151 may be connected to the additional gas injection hole 152, and the inlet of the gas passage 151 may be connected to the additional gas inlet 153 of the susceptor support 130.
- the additional gas inlet 153 is located at a portion drawn out of the chamber 110 from the susceptor support 130.
- the additional gas inlet 153 is connected to the additional gas supply source so that the additional gas from the additional gas source can be introduced into the gas flow path.
- the additional gas injection port 152 is positioned higher than the upper surface of the susceptor 120 to inject additional gas to the upper surface of the susceptor 120.
- the additional gas injection holes 152 may be formed on the side of the susceptor support 130 so that the additional gas may be supplied to the gas entry area from several places at the same time.
- the additional gas injection hole 152 may be formed to be connected to the gas flow path 151 on the upper surface as well as the side of the susceptor support 130.
- the size and shape of the additional gas injection port 152, but the flow rate injected from the additional gas injection port 152 may be variously configured in the range capable of performing the above-described function.
- the additional gas may be injected in a direction parallel to the upper surface of the susceptor 120.
- the present invention is not limited thereto, and the additional gas may be injected in a direction inclined upward with respect to the upper surface of the susceptor 120 in a range capable of performing the above-described function.
- the injection direction of the additional gas may be adjusted according to an angle at which the gas flow path 151 is connected to the additional gas injection hole 152, or may be adjusted by installing a guide member in front of the additional gas injection hole 152.
- the injection cap 160 may be coupled to the top of the susceptor support 130.
- the injection cap 160 has an inner space connected to the gas flow path 151.
- a plurality of additional gas injection holes 152 may be formed on the side of the injection cap 160 so as to be connected to the internal space of the injection cap 160.
- the injection cap 160 may include a disc-shaped cap body 161 and ribs 162 spaced apart from each other and protruded downward along the circumference of the cap body 161.
- the injection cap 160 may be fixed around the upper end of the susceptor support 130 at each lower portion of the ribs 162 with the bottom surface of the cap body 161 spaced apart from the top surface of the susceptor support 130. . Accordingly, a separation space is formed between the bottom surface of the cap body 161 and the top surface of the susceptor support 130, and the separation space communicates with the openings 163 between the ribs 162.
- the openings 163 function as the additional gas injection holes 152 described above.
- the outlet 151a is located on the upper surface of the susceptor support 130 in the above-described gas flow path 151. Therefore, the additional gas may be supplied through the openings 163 formed around the injection cap 160 after being supplied between the injection cap 160 and the susceptor support 130 from the outlet 151a of the gas flow path 151. have.
- the injection cap 260 has an internal space and has a shape in which a lower portion thereof is opened.
- the injection cap 260 may have holes 261 communicating with an internal space along a circumference thereof.
- the lower surface of the injection cap 260 is spaced apart from the upper surface of the susceptor support 130, and with holes 261 positioned higher than the susceptor support 130, the lower portion of the injection cap 260 is the susceptor support. It may be fixed around the top of the 130.
- the additional gas may be supplied from the outlet 151a of the gas flow path 151 between the injection cap 260 and the susceptor support 130 and then injected through the holes 261 formed around the injection cap 160. have.
- the holes 261 function as additional gas injection holes 152.
- the injection cap 260 is formed with an inner flow path connected to the gas flow path 151, it is also possible that the inner flow path is connected to the additional gas injection holes 152, respectively.
- the first source gas may be a source gas containing a group V element
- the second source gas may be a source gas containing a group III element.
- the first source gas is a hydride containing a group V element, and may be NH 3 or PH 3 or AsH 3 .
- the second source gas is an organic metal containing a group III element, and may be TMG (Trimethylgallium) or TEG (Triethylgallium) or TMI (Trimethylindium).
- the carrier gas may be included in the first and second source gases, respectively.
- the additional gas may be at least one selected from gas containing group V element, hydrogen gas, and inert gas.
- gas containing a group V element may be a hydride including a group V element such as NH 3 or PH 3 or AsH 3 .
- the inert gas may be nitrogen (N 2 ) gas, helium (He) gas, argon (Ar) gas, or the like.
- a source gas closest to the susceptor 120 side among the source gas injection holes for injecting the source gas containing the group V element and the source gas injection holes for injecting the source gas containing the Group III element may be a source gas injection hole for injecting a source gas containing a group III element.
- the source gas injection hole closest to the susceptor 120 side may be a source gas injection hole for injecting a source gas containing a group V element.
- the thin film deposition apparatus 100 may be disposed between the source gas injection holes 141a and 141b of the source gas supply unit 140 or above the upper source gas injection hole 141a of the source gas supply unit 140.
- the source gas supply unit 140 may further include an inert gas supply unit for supplying an inert gas under the lower source gas injection hole 141b.
- the inert gas supplied from the inert gas supply unit serves to prevent a reaction in a region adjacent to the source gas injection port between the first and second source gases injected from the source gas supply unit 140, or serves as a carrier of the first and second source gases. can do.
- the inert gas may be nitrogen gas, helium gas or argon gas.
- FIG. 6 is a side cross-sectional view of a thin film deposition apparatus according to another embodiment of the present invention
- Figure 7 is a side cross-sectional view taken from the susceptor and additional gas supply
- FIG. 8 is a plan view of the susceptor and the additional gas supply unit in FIG. 6.
- the thin film deposition apparatus 300 is a device for depositing a thin film on the substrate 10, the chamber 310, the susceptor 320, the susceptor support 330, Source gas supply unit 340, and additional gas supply unit 350.
- the chamber 310 has an interior space in which the deposition process is performed.
- the chamber 310 includes a chamber body 311 having an upper opening and a top lid 312 covering the upper opening of the chamber body 311.
- the lower surface of the top lead 312 may be provided with a ceiling made of quartz or the like.
- the top lead 312 may be lowered during the deposition process to close the upper opening of the chamber body 311, and the upper lid 312 may be lifted during loading or unloading of the substrate 10 to open the upper opening of the chamber body 311. .
- the susceptor 320 is disposed in the chamber 310 and supports the plurality of substrates 10 along the center circumference of the upper surface.
- the plurality of substrate seating portions 321 may be uniformly distributed around the center of the susceptor 320.
- the substrates 10 may be seated and supported by the substrate mounting parts 321, respectively.
- a plurality of substrate holders may be uniformly distributed around the center of the susceptor 320. Each substrate holder receives and supports at least one substrate on the upper surface, respectively.
- the susceptor support 330 is installed to support the center of the susceptor 320 at the lower side of the susceptor 320.
- the susceptor support 330 enables the susceptor 320 to rotate as it is rotated by the rotation driving mechanism 301.
- a lower portion of the susceptor support 330 may be drawn out of the chamber 310, and the susceptor support 330 may be rotated by a rotation driving mechanism connected to the drawn portion.
- the susceptor support 330 is rotated, the susceptor 320 is rotatable together.
- the substrate holders may also be rotatably installed by gas cushions or the like. This is to ensure that the source gas injected from the upper center of the susceptor 320 is evenly supplied to all the substrates 10 on the susceptor 320 during the deposition process.
- the susceptor 320 is heated by a heater (not shown) during the deposition process to allow the substrates 10 supported on the upper surface to be heated.
- the source gas supply unit 340 has the first and second source gases introduced into the upper center of the susceptor 320 in a state separated from each other, and then source gas injection holes 341a arranged up and down. Each of them is sprayed toward the susceptor 320 through the (341b). Accordingly, the first and second source gases may be supplied to the substrates 10 on the susceptor 320.
- the source gas supply unit 340 may be configured to spray the first and second source gases in a horizontal direction parallel to the upper surface of the susceptor 320.
- the present invention is not limited thereto, and the source gas supply unit 340 may be sprayed in a direction inclined downward in a range capable of smoothly supplying the first and second source gases to the substrates 10 on the susceptor 320. Can be configured.
- the source gas supply unit 340 may include supply lines 342a and 342b for supplying the first and second source gases in a state separated from each other.
- the supply lines 342a and 342b extend through the top lead 312 to the upper center of the susceptor 320, and the source gas injection holes 341a and 341b formed at the extended ends are arranged up and down. It may be made of a bent structure.
- the additional gas supply unit 350 is installed at a central area inside the substrate support area on the upper surface of the susceptor 320 to supply additional gas to the upper part of the susceptor 320.
- the additional gas supply unit 350 additionally injects the gas flow path unit 351 through which the additional gas is introduced from the outside of the chamber 310 and the additional gas introduced through the gas flow path unit 351 to the upper surface of the susceptor 320.
- the gas injection port 356 is provided.
- the gas flow path part 351 is formed inside the additional gas supply part 350, and the additional gas injection hole 356 is formed to be connected to the gas flow path part 351 on the upper surface of the additional gas supply part 350.
- the additional gas supply unit 350 may secure the deposition uniformity of the substrate 10 while efficiently increasing the amount of the first and second source gases even when the diameter of the susceptor 320 increases.
- the first and second source gases injected from the source gas supplier 340 flow around the susceptor 320.
- the first and second source gases are supplied to the deposition surface of the substrate 10 to form a thin film in response to the deposition surface of the substrate 10.
- the first and second source gases may not evenly reach the entire deposition surface of the substrate 10 unless the amount of the first and second source gases is increased. There is a fear that the deposition uniformity may decrease.
- the additional gas is supplied from the additional gas supply unit 350 to the upper part of the susceptor 320 and flows toward the susceptor 320, the first and second source gases are supplied to the susceptor by the flow of the additional gas. 320) it can flow further towards the periphery.
- additional gas is supplied from the additional gas supply unit 350 so that the first and second source gases reach the entire deposition surface of the substrate 10 evenly, the substrate may be efficiently used while taking the usage amount of the first and second source gases. Deposition uniformity with respect to (10) can be secured.
- the phenomenon of remaining in the particle state without reacting to the deposition surface of the substrate 10 can also be suppressed.
- the additional gas supply unit 350 is installed in the central region of the upper surface of the susceptor 320 to the inner side of the substrate support region to supply additional gas to the upper portion of the susceptor 320, so that source gas injection holes 341a are provided.
- the material decomposed from the first and second source gases is induced to flow to the substrate support region without descending to the central region of the susceptor 320. Therefore, since the material decomposed from the first and second source gases does not come into contact with the central region of the susceptor 320, unnecessary thin film may be prevented from being deposited.
- the additional gas injection port 356 is formed to be arranged in a plurality of radial or concentric as shown in Figure 7 so that the additional gas can be supplied to the upper portion of the susceptor 320 from several places to perform the above-described function. Can be.
- the additional gas injection holes 356 may be arranged to have a predetermined angle radially so as to inject additional gas evenly for each region, or may be arranged to be spaced concentrically at regular intervals.
- the gas flow path part 351 may include a main flow path 352 and branch flow paths 353 branched from the main flow path 352 and connected to the additional gas injection holes 356, respectively. The additional gas introduced into the main flow passage 352 may be injected through the additional gas injection holes 356 after branching into the branch flow passages 353.
- the additional gas supply unit 350 may be partially accommodated in the accommodation groove 322 of the susceptor 320, so that the height of the additional gas injection hole 356 may be higher than that of the substrate 10 on the susceptor 320.
- the additional gas supply unit 350 may be fixed to the susceptor 320 in contact with the bottom surface of the receiving groove 322, or may be fixed to the susceptor 320 in a non-contact state.
- the additional gas supply unit 350 may be made of silicon carbide (SiC) or BN (Boron Nitride) coated graphite.
- the additional gas supply 350 may be made of quartz (Quartz), or alumina (Al 2 O 3).
- the additional gas supply unit 350 guides the additional gas injected from the additional gas injection holes 356 to flow around the susceptor 320 in a direction parallel to the upper surface of the susceptor 320. It may include a gas guide 357. However, the present invention is not limited thereto, and in a range capable of performing the above-described function, the gas is guided so that the additional gas injected from the additional gas injection holes 356 is injected in an inclined direction upward with respect to the upper surface of the susceptor 320. It may also be guided by the unit 357, or additional gas injection holes 356 are formed.
- the thin film deposition apparatus 300 may include an additional gas supply path 360.
- the additional gas supply path 360 is formed in the susceptor support 330.
- the additional gas supply path 360 receives the additional gas from the outside of the chamber 310 and delivers the additional gas to the gas flow path part 351.
- One end of the additional gas supply path 360 extends into the susceptor 320 and is connected to the main flow path 352 of the gas flow path part 351, and the other end of the additional gas supply path 360 is a susceptor supporter ( It is connected to the additional gas inlet 361 of 330.
- the additional gas inlet 361 is located at a portion of the susceptor support 330 which is drawn out of the chamber 310.
- the additional gas inlet 361 is connected to an additional gas supply source outside the chamber 310 to allow the additional gas of the additional gas source to flow into the additional gas supply path 360.
- the first source gas may be a source gas containing a group V element
- the second source gas may be a source gas containing a group III element.
- the first source gas is a hydride containing a group V element, and may be NH 3 or PH 3 or AsH 3 .
- the second source gas is an organic metal containing a group III element, and may be TMG (Trimethylgallium) or TEG (Triethylgallium) or TMI (Trimethylindium).
- the carrier gas may be included in the first and second source gases, respectively.
- the additional gas may be at least one selected from gas containing group V element, hydrogen gas, and inert gas.
- gas containing a group V element may be a hydride including a group V element such as NH 3 or PH 3 or AsH 3 .
- the inert gas may be nitrogen (N 2 ) gas, helium (He) gas, argon (Ar) gas, or the like.
- the injection hole may be a source gas injection hole for injecting a source gas containing a group III element.
- the source gas injection hole closest to the susceptor 320 may be a source gas injection hole for injecting a source gas containing a group V element.
- the thin film deposition apparatus 300 may be disposed between the source gas injection holes 341a and 341b of the source gas supply unit 340 or above the upper source gas injection hole 341a of the source gas supply unit 340.
- the inert gas supply unit may be further provided to supply an inert gas under the lower source gas injection hole 341b of the source gas supply unit 340.
- the inert gas supplied from the inert gas supply unit serves to prevent a reaction in a region adjacent to the source gas injection port between the first and second source gases injected from the source gas supply unit 340, or serves as a carrier of the first and second source gases. can do.
- the inert gas may be nitrogen gas, helium gas or argon gas.
Abstract
Description
Claims (13)
- 증착 공정이 행해지는 내부 공간을 갖는 챔버;상기 챔버 내에 배치되며, 상면에 중심 둘레를 따라 복수의 기판들을 직접적으로 지지하거나, 하나 이상의 기판이 배치되어 있는 기판 홀더를 지지하는 서셉터;상기 서셉터의 상부 중앙으로 제1,2 소스가스를 분리된 상태로 공급되며, 상하로 배열된 소스가스 분사구들을 통해 상기 분리된 제1,2 소스가스를 상기 서셉터 주변을 향해 각각 분사하여 상기 서셉터 상의 기판들에 상기 제1,2 소스가스를 공급하는 소스가스 공급부; 및상기 서셉터의 하측에서 상기 서셉터의 중앙을 받치도록 설치되며, 상기 챔버의 외부로부터 도입된 추가가스를 상기 서셉터의 상면으로 분사하는 추가가스 공급부를 구비하는 서셉터 지지대;를 포함하는 박막 증착 장치.
- 제1항에 있어서,상기 추가가스는 Ⅴ족 원소를 함유한 가스, 수소 가스, 비활성 가스 중 선택된 적어도 어느 하나인 것을 특징으로 하는 박막 증착 장치.
- 제2항에 있어서,상기 제1 소스가스는 Ⅴ족 원소를 함유한 소스가스이며,상기 제2 소스가스는 Ⅲ족 원소를 함유한 소스가스인 것을 특징으로 하는 박막 증착 장치.
- 제3항에 있어서,상기 소스가스 공급부는,상기 Ⅴ족 원소를 함유한 소스가스를 분사하는 소스가스 분사구와 상기 Ⅲ족 원소를 함유한 소스가스를 분사하는 분사구 중 상기 서셉터 측에 가장 인접한 소스가스 분사구가 상기 Ⅲ족 원소를 함유한 소스가스를 분사하는 소스가스 분사구인 것을 특징으로 하는 박막 증착 장치.
- 제1항에 있어서,상기 추가가스 공급부는:상기 챔버의 외부로부터 추가가스가 도입되도록 상기 서셉터 지지대의 내부에 형성된 가스 유로와, 상기 가스 유로를 통해 유입된 추가가스를 상기 서셉터의 상면으로 분사하는 추가가스 분사구를 포함하는 것을 특징으로 하는 박막 증착 장치.
- 제5항에 있어서,상기 추가가스 분사구는,상기 서셉터 지지대의 측면에 상기 가스 유로와 연결되도록 다수 형성되거나, 상기 서셉터 지지대의 측면과 상면에 각각 상기 가스 유로와 연결되도록 다수 형성된 것을 특징으로 하는 박막 증착 장치.
- 제5항에 있어서,상기 서셉터 지지대의 상단에는,상기 가스 유로와 연결되는 내부 공간이나 내부 유로가 형성된 분사 캡이 결합되며;상기 추가가스 분사구는,상기 분사 캡의 측면에 상기 분사 캡의 내부 공간이나 내부 유로와 연결되도록 다수 형성되거나, 상기 분사 캡의 측면 및 상면에 각각 상기 분사 캡의 내부 공간이나 내부 유로와 연결되도록 다수 형성된 것을 특징으로 하는 박막 증착 장치.
- 제5항에 있어서,상기 추가가스는 상기 서셉터의 상면에 나란한 방향으로 분사되거나, 상기 서셉터의 상면에 대해 상방으로 경사진 방향으로 분사되는 것을 특징으로 하는 박막 증착 장치.
- 제1항에 있어서,상기 소스가스 공급부 중 상부 소스가스 분사구의 위쪽, 또는 하부 소스가스 분사구의 아래쪽, 또는 상기 소스가스 공급부들 사이에서 비활성가스를 공급하기 위한 비활성가스 공급부를 더 포함하는 것을 특징으로 하는 박막 증착 장치.
- 제5항에 있어서,상기 추가가스 분사구는 방사상 또는 동심상으로 다수 배열되도록 형성되는 것을 특징으로 하는 박막 증착 장치.
- 제5항에 있어서,상기 추가가스 공급부는,상기 추가가스 분사구들로부터 분사된 추가가스가 상기 서셉터의 상면에 나란한 방향으로 상기 서셉터 주변을 향해 흐르도록 안내하는 가스 안내부를 포함하는 것을 특징으로 하는 박막 증착 장치.
- 제5항에 있어서,상기 서셉터 지지대 내부에는 상기 챔버 외부로부터 유입되는 추가가스를 상기 추가가스 공급부의 가스 유로부로 전달하는 추가가스 공급로가 형성된 것을 특징으로 하는 박막 증착 장치.
- 제5항에 있어서,상기 소스가스 공급부 중 상부 소스가스 분사구의 위쪽, 또는 하부 소스가스 분사구의 아래쪽, 또는 상기 소스가스 공급부들 사이에서 비활성가스를 공급하기 위한 비활성가스 공급부를 더 포함하는 것을 특징으로 하는 박막 증착 장치.
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US13/823,846 US20130180454A1 (en) | 2010-09-17 | 2011-09-16 | Thin film deposition apparatus |
JP2013529066A JP5710002B2 (ja) | 2010-09-17 | 2011-09-16 | 薄膜蒸着装置 |
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KR1020100091852A KR20120029794A (ko) | 2010-09-17 | 2010-09-17 | 박막 증착 장치 |
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KR102350588B1 (ko) | 2015-07-07 | 2022-01-14 | 삼성전자 주식회사 | 인젝터를 갖는 박막 형성 장치 |
TWI612176B (zh) * | 2016-11-01 | 2018-01-21 | 漢民科技股份有限公司 | 應用於沉積系統的氣體分配裝置 |
JP7002268B2 (ja) * | 2017-09-28 | 2022-01-20 | 東京エレクトロン株式会社 | プラズマ処理装置 |
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CN111254383B (zh) * | 2020-03-25 | 2020-09-25 | 上海陛通半导体能源科技股份有限公司 | 用于改善反应溅射膜层均匀性的物理气相沉积设备 |
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Also Published As
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CN103140914A (zh) | 2013-06-05 |
JP5710002B2 (ja) | 2015-04-30 |
TWI487803B (zh) | 2015-06-11 |
CN103140914B (zh) | 2015-10-14 |
JP2013538463A (ja) | 2013-10-10 |
WO2012036499A3 (ko) | 2012-06-28 |
TW201213570A (en) | 2012-04-01 |
US20130180454A1 (en) | 2013-07-18 |
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