WO2010038972A2 - 소스가스 공급장치 - Google Patents
소스가스 공급장치 Download PDFInfo
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- WO2010038972A2 WO2010038972A2 PCT/KR2009/005584 KR2009005584W WO2010038972A2 WO 2010038972 A2 WO2010038972 A2 WO 2010038972A2 KR 2009005584 W KR2009005584 W KR 2009005584W WO 2010038972 A2 WO2010038972 A2 WO 2010038972A2
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- source gas
- condensation
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- body portion
- condensed
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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
- C23C16/448—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 generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
- C23C16/4481—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 generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials by evaporation using carrier gas in contact with the source material
Definitions
- the present invention relates to a source gas supply device that can control the pressure of the source gas in the deposition chamber during the thin film deposition by chemical vapor deposition. More specifically, the present invention relates to a source gas supply device capable of precisely controlling the pressure or flow rate of the source gas in the deposition chamber by introducing only a specific amount of the source gas into the deposition chamber.
- Thin film deposition by Chemical Vapor Deposition is very technically applicable in many applications such as insulating layers and active layers of semiconductor devices, transparent electrodes of liquid crystal display devices, light emitting layers of electroluminescent display devices, and protective layers. It is important.
- physical properties of thin films deposited by CVD are very sensitive to CVD process conditions such as deposition pressure, deposition temperature, and deposition time. For example, the composition, density, adhesion, deposition rate, and the like of the thin film to be deposited may vary depending on the deposition pressure.
- the deposition pressure is directly influenced by the flow rate of the source gas (ie, the pressure of the source gas) supplied from the source gas supplier supplying the raw material of the thin film material to be deposited. That is, in order to properly control the deposition pressure in the CVD, first of all, the flow rate of the source gas of the source gas supply device must be accurately adjusted. In particular, when the deposition rate needs to be precisely and constantly adjusted, the importance of controlling the flow rate of the source gas becomes more important.
- the conventional source gas supply device 100 is a source gas generating unit 110, a heater 130, a carrier gas supply unit 140, a deposition chamber 150 and a plurality of source material 120 to generate a source gas Of the valves (161 to 164).
- the source material 120 exists in a solid or liquid state at room temperature, in order for the source material 120 to be source gasized, the source material 120 needs to be heated to a temperature higher than or equal to room temperature. It is used as a heating means of the material 120.
- the carrier gas is assisted to smoothly move the source gas into the deposition chamber 150.
- the plurality of valves 161 to 164 open and close according to circumstances to adjust the flow rate or pressure of the source gas and the carrier gas. For example, when no carrier gas is used, the valves 161 and 163 are closed.
- the conventional source gas supply device 100 has the following problems. First, since the volatility of the source material 120 changes depending on the amount of source material 120 remaining in the source gas generator 110, only the opening and closing of the valve 162 can accurately adjust the pressure of the source gas. There will be no. In addition, if the volatilization and condensation process of the source material 120 is repeated by heating the source material 120, the volatilization surface of the source material 120 is changed to change the volatility of the source material 120, so that the source It is difficult to adjust the pressure of the gas accurately. In particular, when the source material 120 is in the form of powder, since the change in the surface condition of the source material 120 becomes larger, the above problem becomes more serious.
- the present invention has been made to solve the problems of the prior art as described above, to provide a source gas supply device that can accurately control the pressure or flow rate of the source gas in the deposition chamber during thin film deposition by chemical vapor deposition method The purpose.
- the source gas supply apparatus is a deposition process made in the deposition chamber by precisely controlling the amount of source gas flowing into the deposition chamber regardless of the state of the source material in the source gas generating unit during the thin film deposition by chemical vapor deposition method There is an effect that can accurately control the deposition pressure.
- FIG. 1 is a view showing the configuration of a conventional source gas supply device (100).
- FIG 2 is a view showing the configuration of a source gas supply device 200 according to an embodiment of the present invention.
- 3 to 6 are diagrams illustrating an example of an internal configuration and an operation step of the source gas condenser 240 of the source gas supply device 200.
- FIG. 7 to 10 are views showing another example of the internal configuration and operation steps of the source gas condensation unit 240 of the source gas supply device 200.
- FIG 11 is a view showing the configuration of a source gas supply device 300 according to an embodiment of the present invention.
- FIG 12 to 14 are views illustrating an example of an operation step of the source gas condenser 340 of the source gas supply device 300.
- 15 is a diagram illustrating another example of an operation step of the source gas condenser 340 of the source gas supply device 300.
- the source gas supply apparatus is a source gas supply device for supplying the source gas to the deposition chamber during the thin film deposition by chemical vapor deposition method, the source material is heated to generate the source gas Source gas generating unit; And a source gas condensation unit in which the source gas generated in the source gas generating unit is introduced and condensed, from the source gas generating unit until the amount of condensation of the source gas condensed in the source gas condensing unit reaches a saturated condensation amount.
- the source gas is introduced into the source gas condenser to condense the source gas to the source gas condenser, and after the condensation amount of the source gas condensed to the source gas condenser reaches the saturated condensation amount, the source gas generator It is characterized in that the inlet of the source gas from the source gas condensation unit from the source gas condensation unit and the source gas condensed in the source gas condensation unit is introduced into the deposition chamber.
- the source gas condensation part may include a first body part and a second body part disposed to face each other at a predetermined distance.
- the temperature of the first body portion is lower than the condensation temperature of the source gas and the temperature of the second body portion is higher than the condensation temperature of the source gas until the amount of condensation of the source gas condensed on the source gas condensation reaches a saturated condensation amount.
- the temperature of the first body portion and the second body portion may be adjusted higher than the condensation temperature of the source gas.
- the saturated condensation amount of the source gas may be determined according to at least one of a temperature difference between the first body part and the second body part and a distance between the first body part and the second body part.
- a first temperature controller may be connected to the first body, and a second temperature controller may be connected to the second body.
- the first body portion and the second body portion may be a plate structure.
- the first body portion may be a pillar structure
- the second body portion may be a hollow pillar structure surrounding the first body portion
- a plurality of the source gas condensation unit may be installed in parallel.
- the source gas supply apparatus for supplying the source gas to the deposition chamber during the thin film deposition by the chemical vapor deposition method, a source gas generator for heating the source material to generate a source gas; A source gas condenser that condenses the source gas generated by the source gas generator; A carrier gas supply unit configured to supply a carrier gas so that the source gas generated by the source gas generator is smoothly introduced into the source gas condenser; And a sensor unit that detects a flow rate of a carrier gas passing through the source gas condensation unit, and when the detected flow rate is greater than a predetermined flow rate, the source gas is transferred from the source gas generating unit to the source gas condensation unit.
- a plurality of the source gas condensation unit may be installed in parallel.
- the source gas condenser may include a first condenser disposed on the source gas generator and a second condenser disposed on the deposition chamber.
- the first condenser may be a tubular structure.
- the second condensation unit may be a mesh structure.
- the flow rate of the carrier gas passing through the mesh structure may decrease.
- the source gas generating unit Inflow of the source gas from the source gas condensation unit can be blocked.
- a first temperature controller may be connected to the first condenser and a second temperature controller may be connected to the second condenser.
- a flow rate control unit may be installed between the carrier gas supply unit and the source gas generator to control the flow rate of the carrier gas drawn to the source gas generator.
- FIG. 2 is a view showing in detail the configuration of the source gas supply apparatus 200 according to an embodiment of the present invention.
- the source gas supply device 200 includes a source gas generator 210, a carrier gas supplier 220, a flow rate controller 230, a source gas condenser 240, and a deposition chamber 250.
- the pass portion 260 includes a plurality of valve portions 271 to 276 and a gas passage 280 connecting the components.
- the source gas generator 210 heats the source material 212 using the heater 214, thereby generating a source gas (not shown) from the source material 212.
- the source material 212 is a raw material of the source gas used in the deposition process, and generally exists in a solid or liquid state at room temperature.
- the heater 214 may heat the source material 212 at a temperature higher than or equal to room temperature in order to source gasify the source material 212 in a solid state existing in the source gas generator 210.
- the carrier gas supply unit 220 sources the source gas generated by the source gas generator 210 so that the source gas can be smoothly transferred to the source gas condenser 240, the deposition chamber 250, and the bypass unit 260 which will be described later. Supply a predetermined carrier gas serving to carry the gas.
- a predetermined carrier gas serving to carry the gas.
- the carrier gas since the source gas made of a metal element has a high specific gravity and low mobility, a separate carrier gas is required as a means for smoothly transferring the source gas.
- the carrier gas should be light and should not affect the deposition process, it is preferable that the specific gravity is low and the reactivity is low.
- the carrier gas may include an inert gas such as argon (Ar), nitrogen (N 2), and the like.
- the flow rate controller 230 detects and controls the flow rate of the carrier gas supplied from the carrier gas supply unit 220. According to an embodiment of the present invention, the flow rate control unit 230 stabilizes the supply of the carrier gas so that the carrier gas can be stably supplied to the source gas generator 210 and the source gas condenser 240 to be described later. .
- the source gas condenser 240 is a component connected to the source gas generator 210 at one end thereof and connected to the deposition chamber 250 and the bypass unit 260.
- the source gas condenser 240 is connected to the source gas generator 210 from the source gas generator 210. It serves to condense or volatilize the incoming source gas.
- the source gas condenser 240 condenses the source gas until the amount of condensation of the source gas condensed in the source gas condenser 240 reaches the saturation condensation amount, and the source gas condenser 240 After the condensed amount of the condensed source gas reaches the saturated condensed amount, the source gas condensed in the source gas condensing unit 240 is introduced into the deposition chamber 250, so that the amount of source gas introduced into the deposition chamber 250 is increased. It performs the function of controlling precisely.
- the configuration and operation principle of the source gas condensation unit 240 according to an embodiment of the present invention will be described in detail.
- the source gas condensation unit 240 may include a first body portion 241 and a second body portion 243 disposed to face each other at a predetermined distance.
- the first body portion 241 and the second body portion 243 may be formed in various shapes, for example, the first body portion 241 and the second body portion 243 may be a plate structure, other
- the first body portion 241 may be a pillar structure
- the second body portion 243 may be a hollow pillar structure surrounding the first body portion 241.
- the shapes of the first body portion 241 and the second body portion 243 are not limited thereto, and may be changed appropriately within a range capable of achieving the object of the present invention.
- the first temperature controller 242 and the second temperature controller 244 may be connected to the first body 241 and the second body 243, respectively. Accordingly, the temperatures of the first body portion 241 and the second body portion 243 may be adjusted independently of each other.
- the temperature of the first body portion 241 may be adjusted to be lower than the temperature at which the source gas starts to condense (hereinafter referred to as "condensation temperature of the source gas"), on the contrary, the second body portion ( The temperature of 243 may be adjusted higher than the condensation temperature of the source gas.
- the temperature of the first temperature control unit 242 and the second temperature control unit 244 is not limited thereto, and may be appropriately changed within a range capable of achieving the object of the present invention. will be.
- the condensation process of the source gas performed in the source gas condensation unit 240 will be described in detail as follows.
- the temperature of the first body 241 is controlled to be lower than the condensation temperature of the source gas, and at the same time, the temperature of the second body 243.
- the source gas can be condensed only in the first body portion 241.
- the source gas condensed on the first body 241 may form a layer 245 having a predetermined thickness, and as the source gas continues to condense, the thickness of the source gas condensation layer 245 becomes thicker. Can lose.
- the second body portion 243 set to a temperature higher than the condensation temperature of the source gas is formed to face the first body portion 241 at a predetermined distance, the second body portion 243 is formed on the first body portion 241.
- the source gas condensation layer 245 is closer to the distance from the second body portion 243, and thus, the source gas condensation layer due to the high temperature of the second body portion 243.
- the temperature of the surface may rise and the source gas may no longer condense. That is, condensation of the source gas formed in the source gas condensation unit 240 reaches a saturation state. At this time, only source gas having a saturated condensation amount is condensed in the source gas condensation unit 240.
- the source gas can be introduced into the deposition chamber 250 by volatilizing only the source gas having a saturated condensation amount condensed on the source gas condensation unit 240 (exactly, the first body portion 241).
- blocking the introduction of the source gas may be performed by the valve parts 271 to 276 which will be described later.
- the first gas is disposed at one end of the source gas condenser 240 on the source gas condenser 240.
- the carrier gas and the source gas passing through the source gas condensation unit 240 while the source gas is condensed in the source gas condensation unit 240 are not the deposition chamber 250.
- the flow path of the source gas may be controlled by using the valve parts 275 and 276 which will be described later to flow into the pass part 260.
- the deposition chamber 250 may be adjusted by adjusting the saturated condensation amount of the source gas. The effect of being able to accurately control the amount of source gas introduced into the furnace is achieved.
- a specific embodiment of controlling the saturated condensation amount of the source gas condensed on the source gas condensation unit 240 will be described.
- the source according to the temperature of the first body portion 241, the temperature of the second body portion 243 and the temperature difference between the first body portion 241 and the second body portion 243
- the saturated condensation amount of the source gas condensed on the gas condenser 240 may be adjusted. Specifically, when the temperature of the first body portion 241 is set lower, the saturated condensation amount of the source gas condensed on the source gas condensation unit 240 may increase, and the temperature of the second body portion 243 may be increased. When set high, the saturated condensation amount of the source gas condensed on the source gas condensation unit 240 may be reduced. As the temperature difference between the first body part 241 and the second body part 243 increases, the saturated condensation amount of the source gas condensed on the source gas condensation part 240 may increase.
- the saturation condensation amount of the source gas condensed on the source gas condensation unit 240 may be adjusted according to the distance between the first body portion 241 and the second body portion 243. have. Specifically, as the distance between the first body part 241 and the second body part 243 increases, the saturated condensation amount of the source gas condensed on the source gas condensation part 240 may increase.
- the condensation amount of the source gas of the saturation condensation amount is condensed in the source gas condensation unit 240.
- the process of introducing the same into the deposition chamber 250 may be repeatedly performed one or more times, thereby allowing the source gas of the saturated condensation amount or more to flow into the deposition chamber 250.
- the source gas supply apparatus 200 may include a plurality of source gas condensation unit 240.
- a plurality of source gas condensing unit 240 may be installed in parallel between the source gas generating unit 210 and the deposition chamber 250, in this case is condensed in each source gas condensing unit 240 Since the errors in the amount of condensation of the source gas may be offset, the amount of source gas introduced into the deposition chamber 250 may be more accurately controlled.
- the deposition chamber 250 performs a function of forming a predetermined thin film layer (not shown) on the substrate (not shown) by using the source gas introduced from the source gas condenser 240.
- the deposition chamber 250 may form a thin film layer using chemical vapor deposition (CVD), for example, LPCVD (Low Pressure Chemical Vapor Deposition) and PECVD (Plasma Enhanced Chemical Vapor). Deposition) may be applied.
- CVD chemical vapor deposition
- LPCVD Low Pressure Chemical Vapor Deposition
- PECVD Pasma Enhanced Chemical Vapor
- the bypass unit 260 discharges the source gas whose pressure or flow rate is not controlled in the source gas delivered from the source gas condenser 240 to the outside.
- a known vent may be employed as the bypass portion 260.
- the plurality of valve parts 271 to 276 performs a function of adjusting the pressure to the flow rate of the source gas and the carrier gas by opening and closing the delivery passage of the source gas according to the situation.
- the first valve portion 271 and the third valve portion 273 adjust the flow rate of the carrier gas supplied from the carrier gas supply unit 220
- the second valve unit 272 is a source gas generator ( The flow rate of the source gas generated from 210 may be adjusted.
- the fourth valve part 274, the fifth valve part 275, and the sixth valve part 276 are respectively introduced into the source gas condensation part 240, the deposition chamber 250, and the bypass part 260. The flow rate of the source gas can be adjusted.
- the source gas condensation unit 240 it is possible to accurately control the amount of source gas flowing into the deposition chamber 250.
- the amount or pressure control of the source gas according to an embodiment of the present invention is a source gas introduced into the deposition chamber, such as when depositing a thin film of atomic layer or less, such as atomic layer deposition (ALD) It is more effective when it is necessary to finely adjust the amount of.
- ALD atomic layer deposition
- FIGS. 3 to 6 are views illustrating an example of an internal configuration and an operation step of the source gas condenser 240 of the source gas supply device 200.
- FIGS. 3 to 6 are views exemplarily illustrating a cross section of the source gas condenser 240. 3 to 6, the operation steps of the source gas condenser 240 will be described as follows.
- the first body part 241 and the second body part 243 of the source gas condensation part 240 may be plate structures disposed to face each other at a predetermined distance.
- the temperature can be adjusted.
- both ends of the source gas condensation unit 240 may be connected to the delivery passage 280 of the source gas, the delivery passage 280 is a predetermined temperature to the temperature in the delivery passage 280 so that the source gas is not condensed during the movement
- a plurality of heaters 282 to maintain the above can be connected.
- the source gas condenser 240 adjusts the temperature of the first body 241 to be lower than the condensation temperature of the source gas, and controls the temperature of the second body 243 to condense the source gas.
- the source gas can be condensed only in the first body part 241.
- the condensation amount of the source gas condensed on the first body portion 241 increases and the thickness of the source gas condensation layer 245 becomes thick, the position where the source gas is newly condensed is changed to the second body portion 243 (source gas).
- the source gas is no longer condensed over the source gas condensation layer 245, the amount of condensation of the source gas condensed in the source gas condensation unit 240 is saturated condensation Amount is reached.
- the source gas condenser 240 may source the condensate from the source gas condenser 240.
- the source gas condensed in the source gas condensation unit 240 is volatilized and introduced into the deposition chamber 250. Can be.
- the source gas corresponding to the saturated condensation amount can be introduced into the deposition chamber 250 by volatilizing all the source gas condensed in the source gas condensation unit 240.
- FIGS. 7 to 10 are diagrams illustrating another example of an internal configuration and an operation step of the source gas condenser 240 of the source gas supply device 200.
- FIGS. 7 to 10 are cross-sectional views of the source gas condensation unit 240 by way of example. 7 to 10, the operation steps of the source gas condenser 240 will be described as follows.
- the first body part 241 of the source gas condensation part 240 may be a pillar structure, and the second body part 243 may be spaced apart from the first body part 241 at a predetermined distance.
- the hollow pillar structure may be disposed to face each other and surround the first body portion 241.
- the first body part 241 and the second using the first temperature control unit 242 and the second temperature control unit 244 respectively connected to the first body unit 241 and the second body unit 243.
- the temperature of the body portion 243 may be adjusted.
- both ends of the source gas condensation unit 240 may be connected to the delivery passage (not shown) of the source gas, the delivery passage (not shown), the delivery passage (not shown) so as not to condense during the movement of the source gas
- a plurality of heaters (not shown) may be connected to maintain the temperature in the above).
- the source gas condenser 240 adjusts the temperature of the first body 241 to be lower than the condensation temperature of the source gas, and controls the temperature of the second body 243 to condense the source gas. By adjusting the temperature higher than the temperature, the source gas can be condensed only in the first body part 241. As the condensation amount of the source gas condensed on the first body portion 241 increases and the thickness of the source gas condensation layer 245 becomes thick, the position where the source gas is newly condensed is changed to the second body portion 243 (source gas). When set to a temperature higher than the condensation temperature of the), the source gas is no longer condensed on the source gas condensation layer 245, the amount of condensation of the source gas condensed in the source gas condensation unit 240 is saturated condensation Amount is reached.
- the source gas condensing unit 240 supplies the source gas to the source gas condensation unit 240.
- the source gas condensed in the source gas condensation unit 240 is volatilized and introduced into the deposition chamber 250. Can be.
- the source gas corresponding to the saturated condensation amount can be introduced into the deposition chamber 250.
- FIG. 11 is a view showing in detail the configuration of the source gas supply device 300 according to an embodiment of the present invention.
- the source gas supply device 300 includes a source gas generator 310, a carrier gas supply 320, a flow rate controller 330, a source gas condenser 340, a sensor 350, and deposition.
- the chamber 360 includes a bypass portion 370, a plurality of valve portions 381 to 386, and a gas passage 390 connecting the components.
- the source gas generator 310, the carrier gas supplier 320, and the flow controller 330 include the source gas generator 210, the carrier gas supplier 220, and the flow controller 230 mentioned in the first embodiment. Since the same function as), a detailed description thereof will be omitted.
- the source gas condensation unit 340 is one end is connected to the source gas generating unit 310 and the other end is a component connected to the deposition chamber 360 and the bypass unit 370, the source gas generating unit ( To selectively condensate or volatilize the source gas flowing from the 310.
- the source gas condensation unit 340 may selectively condense or volatize the source gas based on a flow rate of the carrier gas detected by the sensor unit 350 to be described later. have.
- the sensor unit 350 detects the pressure or flow rate of the carrier gas passing through the source gas condensation unit 340.
- the pressure or flow rate of the carrier gas detected by the sensor unit 350 is a criterion for determining an operation type (that is, an operation of condensing the source gas or an operation of volatilizing the source gas) of the source gas condensation unit 340 which will be described later. Can be.
- FIGS. 12 to 14 are views illustrating an example of an operation step of the source gas condenser 340 of the source gas supply device 300.
- FIGS. 12 to 14 are views exemplarily illustrating a cross section of the source gas condenser 340.
- the source gas condenser 340 may include a first condenser 341, a first temperature controller 343, a second condenser 344, and a second temperature controller 345. It may include.
- the first condensation unit 341 may be disposed on the source gas generator 310 as a tube structure
- the second condensation unit 344 may be disposed on the deposition chamber 360 side as a mesh structure. Can be.
- the first temperature control unit 343 and the second temperature control unit 345 respectively control the temperature inside the first condensation unit 341 and the second condensation unit 344, and a predetermined heater. And a cooler.
- both ends of the source gas condensation unit 340 may be connected to the delivery passage 390 of the source gas, the delivery passage 390 is a constant temperature to the temperature in the delivery passage 390 so that the source gas is not condensed during the movement
- a plurality of heaters 392 to be maintained above can be connected.
- the source gas condensed in the first condensation unit 341 or the second condensation unit 344 may be volatilized.
- the source gas condensation is performed.
- the unit 340 may condense a predetermined amount of source gas in the source gas condensation unit 340 by advancing the source gas into the source gas condensation unit 340 and cooling the inside of the source gas condensation unit 340. .
- the source gas in the case of the first condensation unit 341 of the source gas condensation unit 340, the source gas may be condensed on the inner circumferential surface 342 of the tubular structure, and the source gas condensation unit 340
- source gas may be condensed on the mesh structure 344.
- the mesh structure 344 of the second condenser 344 has a dense net structure and may be formed over the entire passageway of the deposition chamber 360 side of the source gas condensation part 340.
- the pressure to the flow rate of the carrier gas detected by the sensor unit 350 is reduced.
- the specific amount of source gas corresponding to the predetermined specific pressure or flow rate may be condensed inside the source gas condensation unit 340. Will be.
- the deposition chamber ( It is not desirable to directly enter 360. Therefore, according to an embodiment of the present invention, the carrier gas and the source gas passing through the source gas condensation unit 340 while the source gas is condensed in the source gas condensation unit 340 are not the deposition chamber 360.
- the flow path of the source gas may be controlled by using the valve parts 385 and 386 which will be described later to flow into the pass part 370.
- the source gas inlet to the source gas condenser 340 may be blocked so that the source gas is no longer condensed in the source gas condenser 340.
- blocking the inflow of the source gas may be performed by using the valve unit 384, which will be described later.
- the fourth gas disposed at one end of the source gas condenser 340 on the source gas condenser 340 This can be done by locking the valve 384.
- the reduced flow rate of the carrier gas due to the source gas condensed on the mesh structure 344 passes through the mesh structure 344 when the source gas is not condensed on the mesh structure 344.
- n is an integer of 2 or more
- the inflow of the source gas from the source gas generating unit 310 to the source gas condensing unit 340 may be blocked.
- the source gas condensation unit 340 blocks the inflow of the source gas to the source gas condensation unit 340 as described above, and then uses the first temperature control unit 343 or the second temperature control unit 345.
- the source gas 346 condensed in the first condensation unit 341 or the second condensation unit 344 may be volatilized.
- the specific amount of pre-condensed source gas 346 in the source gas condensation unit 340 is volatilized while the inlet of the source gas into the source gas condensation unit 340 is volatilized, thereby entering the deposition chamber 360. It is possible to accurately control the pressure to the flow rate of the source gas.
- FIG. 15 is a diagram illustrating another example of an operation step of the source gas condenser 340 of the source gas supply device 300.
- FIG. 15 is a diagram exemplarily illustrating a cross section of the source gas condenser 340.
- the condensation and volatilization of the source gas performed in the first condenser 341 and the second condenser 344 of the source gas condenser 340 may be performed independently of each other, When used, the amount of source gas volatilized from the source gas condensation unit 340 and introduced into the deposition chamber 360 may be more accurately adjusted.
- the source gas condensed in the first condensation unit 341 is volatilized It is possible to volatilize only a small amount of source gas condensed in the second condensation unit 344 without this, thereby finely controlling the amount of source gas introduced into the deposition chamber 360.
- the source gas condensation unit 340 and the sensor unit 350 it is possible to accurately control the pressure or flow rate of the source gas flowing into the deposition chamber 360. .
- the source gas flow rate or pressure control it is necessary to finely control the amount deposited when depositing a thin film of atomic layer or less, such as atomic layer deposition (ALD) It is more effective if there is.
- ALD atomic layer deposition
- the source gas supply device 300 may include a plurality of source gas condensation units 340.
- a plurality of source gas condensation unit 340 may be installed in parallel between the source gas generating unit 310 and the deposition chamber 360, in this case is condensed in each source gas condensing unit 340 Since the errors in the amount of condensation of the source gas may be offset, the pressure or flow rate of the source gas flowing into the deposition chamber 360 may be more accurately controlled.
- the deposition chamber 360, the bypass part 370, and the plurality of valve parts 381 to 386 are the deposition chamber 250, the bypass part 260, and the plurality of valve parts mentioned in the first embodiment. Since the same functions as the operations 271 to 276 are described, a detailed description thereof will be omitted.
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Claims (17)
- 화학기상 증착법에 의한 박막 증착시 소스가스를 증착챔버에 공급하는 소스가스 공급장치로서,소스물질을 가열하여 소스가스를 생성하는 소스가스 생성부; 및상기 소스가스 생성부에서 생성된 소스가스가 유입되어 응축되는 소스가스 응축부를 포함하되,상기 소스가스 응축부에 응축된 소스가스의 응축량이 포화 응축량에 도달할 때까지 상기 소스가스 생성부로부터 상기 소스가스 응축부로 소스가스의 유입을 진행하여 상기 소스가스 응축부에 소스가스를 응축시키고, 상기 소스가스 응축부에 응축된 소스가스의 응축량이 포화 응축량에 도달한 이후는 상기 소스가스 생성부로부터 상기 소스가스 응축부로 소스가스의 유입을 차단하고 상기 소스가스 응축부에 응축되어 있던 소스가스를 상기 증착챔버로 유입시키는 것을 특징으로 하는 소스가스 공급장치.
- 제1항에 있어서,상기 소스가스 응축부는 일정한 거리를 두고 대향하여 배치되는 제1 바디부 및 제2 바디부를 포함하는 것을 특징으로 하는 소스가스 공급장치.
- 제2항에 있어서,상기 소스가스 응축부에 응축된 소스가스의 응축량이 포화 응축량에 도달할 때까지 상기 제1 바디부의 온도는 상기 소스가스의 응축 온도보다 낮고 상기 제2 바디부의 온도는 상기 소스가스의 응축 온도보다 높게 조절되며,상기 소스가스 응축부에 응축된 소스가스의 응축량이 포화 응축량에 도달한 이후 상기 제1 바디부 및 상기 제2 바디부의 온도는 상기 소스가스의 응축 온도보다 높게 조절되는 것을 특징으로 하는 소스가스 공급장치.
- 제3항에 있어서,상기 제1 바디부와 상기 제2 바디부 사이의 온도 차이 및 상기 제1 바디부와 상기 제2 바디부 사이의 거리 중 적어도 하나에 따라 상기 소스가스의 포화 응축량이 결정되는 것을 특징으로 하는 소스가스 공급장치.
- 제2항에 있어서,상기 제1 바디부에는 제1 온도 조절부가 연결되고 상기 제2 바디부에는 제2 온도 조절부가 연결되는 것을 특징으로 하는 소스가스 공급장치.
- 제2항에 있어서,상기 제1 바디부 및 상기 제2 바디부는 판 구조물인 것을 특징으로 하는 소스가스 공급장치.
- 제2항에 있어서,상기 제1 바디부는 기둥 구조물이고 상기 제2 바디부는 상기 제1 바디부를 둘러싸는 속이 빈 기둥 구조물인 것을 특징으로 하는 소스가스 공급장치.
- 제1항에 있어서,상기 소스가스 응축부는 복수개가 병렬로 설치되는 것을 특징으로 하는 소스가스 공급장치.
- 화학기상 증착법에 의한 박막 증착시 소스가스를 증착챔버에 공급하는 소스가스 공급장치로서,소스물질을 가열하여 소스가스를 생성하는 소스가스 생성부;상기 소스가스 생성부에서 생성된 소스가스가 유입되어 응축되는 소스가스 응축부;상기 소스가스 생성부에서 생성된 소스가스가 상기 소스가스 응축부로 원활하게 유입되게 운반가스를 공급하는 운반가스 공급부; 및상기 소스가스 응축부를 통과하는 운반가스의 유량(flow rate)을 검출하는 센서부를 포함하되,상기 검출된 유량이 기설정된 유량보다 큰 경우에는 상기 소스가스 생성부로부터 상기 소스가스 응축부로 소스가스의 유입을 진행하여 상기 소스가스 응축부에 소스가스를 응축시키고, 상기 검출된 유량이 기설정된 유량과 실질적으로 동일한 경우에는 상기 소스가스 생성부로부터 상기 소스가스 응축부로 소스가스의 유입을 차단하고 상기 소스가스 응축부에 응축되어 있던 소스가스를 상기 증착챔버로 유입시키는 것을 특징으로 하는 소스가스 공급장치.
- 제9항에 있어서,상기 소스가스 응축부는 복수개가 병렬로 설치되는 것을 특징으로 하는 소스가스 공급장치.
- 제9항에 있어서,상기 소스가스 응축부는 상기 소스가스 생성부측에 배치되는 제1 응축부와 상기 증착챔버측에 배치되는 제2 응축부를 포함하는 것을 특징으로 하는 소스가스 공급장치.
- 제11항에 있어서,상기 제1 응축부는 관 구조물인 것을 특징으로 하는 소스가스 공급장치.
- 제11항에 있어서,상기 제2 응축부는 메쉬 구조물인 것을 특징으로 하는 소스가스 공급장치.
- 제13항에 있어서,상기 메쉬 구조물에 소스가스가 응축됨에 따라 상기 메쉬 구조물을 통과하는 운반가스의 유량이 감소하는 것을 특징으로 하는 소스가스 공급장치.
- 제14항에 있어서,상기 감소된 운반가스의 유량이 상기 메쉬 구조물에 소스가스가 응축되지 않은 경우에 상기 메쉬 구조물을 통과하는 운반가스의 유량에 1/n이 되었을 때(n은 2 이상의 정수), 상기 소스가스 생성부로부터 상기 소스가스 응축부로 소스가스의 유입을 차단하는 것을 특징으로 하는 소스가스 공급장치.
- 제11항에 있어서,상기 제1 응축부에는 제1 온도 조절부가 연결되고 상기 제2 응축부에는 제2 온도 조절부가 연결되는 것을 특징으로 하는 소스가스 공급장치.
- 제9항에 있어서,상기 운반가스 공급부와 상기 소스가스 생성부 사이에는 상기 소스가스 생성부로 유인되는 운반가스의 유량을 제어하는 유량 제어부가 설치되는 것을 특징으로 하는 소스가스 공급장치.
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KR10-2008-0106630 | 2008-10-29 | ||
KR1020080106630A KR101126106B1 (ko) | 2008-10-29 | 2008-10-29 | 소스가스 공급장치 |
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US20060144338A1 (en) * | 2004-12-30 | 2006-07-06 | Msp Corporaton | High accuracy vapor generation and delivery for thin film deposition |
KR20080072119A (ko) * | 2007-02-01 | 2008-08-06 | 주식회사 테라세미콘 | 소스가스 공급장치 |
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JP3208671B2 (ja) * | 1991-06-06 | 2001-09-17 | 日本酸素株式会社 | 気相成長方法及び装置 |
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US6107184A (en) * | 1998-12-09 | 2000-08-22 | Applied Materials, Inc. | Nano-porous copolymer films having low dielectric constants |
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JP2004015005A (ja) * | 2002-06-11 | 2004-01-15 | Murata Mfg Co Ltd | 薄膜製造装置及び薄膜の製造方法 |
US20060144338A1 (en) * | 2004-12-30 | 2006-07-06 | Msp Corporaton | High accuracy vapor generation and delivery for thin film deposition |
KR20080072119A (ko) * | 2007-02-01 | 2008-08-06 | 주식회사 테라세미콘 | 소스가스 공급장치 |
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WO2019113466A1 (en) * | 2017-12-07 | 2019-06-13 | Entegris, Inc. | Chemical delivery system and method of operating the chemical delivery system |
US11421320B2 (en) | 2017-12-07 | 2022-08-23 | Entegris, Inc. | Chemical delivery system and method of operating the chemical delivery system |
US11746413B2 (en) | 2017-12-07 | 2023-09-05 | Entegris, Inc. | Chemical delivery system and method of operating the chemical delivery system |
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JP2012504703A (ja) | 2012-02-23 |
CN102165560A (zh) | 2011-08-24 |
TW201022468A (en) | 2010-06-16 |
WO2010038972A3 (ko) | 2010-07-01 |
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