KR101667945B1 - substrate processing apparatus - Google Patents

Abstract

The present invention provides a substrate processing apparatus. A substrate processing apparatus of the present invention includes: a processing chamber having an upper chamber opened at an upper portion thereof and an upper chamber closing an open upper portion of the lower chamber; A support member installed in the lower chamber and on which a plurality of substrates are placed on the same plane; A lower surface of the upper chamber facing the support member; And a reaction member having a plurality of reaction cells arranged in a concentric circle about the center of the upper chamber; And one of the plurality of reaction cells is a high velocity vortex reaction cell formed with a gas passage extending from the center of the upper chamber to an edge thereof across the center of the bottom surface.

Description

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substrate processing apparatus, and more particularly, to a substrate processing apparatus capable of minimizing stagnation of gas by multi-directional exhaust of a gas ejected to a substrate.

In order to improve the conformability of the deposited film during the deposition process for manufacturing a semiconductor device, the reaction product of two or more gases in one system is used to control the temperature, pressure, and gas ratio Gas ratio, reaction time, and uniform gas supply are very important.

In particular, various gas supply methods have been proposed in order to supply a uniform gas.

The gas supply structure of the central injection nozzle type shown in Fig. 1 and the gas supply structure of the showerhead type shown in Fig. 2 control the size of the hole, the size of the slot, the number of the slots, Supply.

However, in the gas supply structure shown in Fig. 1, the gas concentration decreases as the distance from the central injection nozzle 2 decreases. In the showerhead type (down flow) 3 shown in Fig. 2, An imbalance occurs.

In this way, it is difficult and very limited to control the deviation of the concentration due to the gas stagnation in the wide reaction space in the form of eccentric exhaust.

Particularly, in the case of precursor, depending on the type, there is a possibility that the gas phase reaction and adsorption due to accelerated decomposition of the precursor upon changing the hole pattern, position, and showerhead and nozzle inner volume, It was difficult to control the concentration deviation due to the characteristic change, and it was difficult to obtain a uniform quality due to the composition of the depression, the step coverage, the loading effect, and the film.

Also, the showerhead type of Fig. 2 has a short preventive maintenance (PM) cycle and is difficult to maintain.

SUMMARY OF THE INVENTION An object of the present invention is to provide a substrate processing apparatus capable of inducing a high velocity vortex flow of a gas to secure a high quality thin film.

It is an object of the present invention to provide a substrate processing apparatus capable of minimizing gas outflow and inflow into a neighboring reaction cell.

It is an object of the present invention to provide a substrate processing apparatus capable of reducing gas consumption.

It is an object of the present invention to provide a substrate processing apparatus capable of prolonging a preventive maintenance cycle and shortening a maintenance time.

The problems to be solved by the present invention are not limited thereto, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a process chamber comprising: a processing chamber having an upper chamber opened at an upper portion thereof and an upper chamber closing an open upper portion of the lower chamber; A support member installed in the lower chamber and on which a plurality of substrates are placed on the same plane; A lower surface of the upper chamber facing the support member; And a reaction member having a plurality of reaction cells arranged in a concentric circle about the center of the upper chamber; And a high velocity vortex reaction cell in which one of the plurality of reaction cells is formed with a gas passage extending from a center to an edge of the upper chamber so as to cross the center of the bottom surface.

Further, the high-speed eddy current reaction cell is provided at one end of the gas passage close to the center of the upper chamber, and injects gas so as to have a linearity in the longitudinal direction of the gas passage; And an air outlet provided at an end of the gas passage and forming an air curtain for blocking (suppressing) the straightness of the gas flowing along the gas passage.

The high-speed vortex reaction cell may have a bottom surface having a height lower than the bottom surface of the other reaction cells of the plurality of reaction cells.

Further, the plurality of reaction cells are partitioned by partition members radially disposed from the center of the upper chamber; The bottom surface of the high-speed vortex reaction cell may have the same height as the bottom surface of the neighboring partition member.

The high velocity vortex reaction cell may further include a side air outlet formed along an edge adjacent to the pumping baffle, and the side air outlet may form an air curtain for blocking gas escaping from the high velocity vortex reaction cell to the pumping baffle .

In addition, the air outlet may discharge air vertically and downwardly perpendicular to the flow of the gas flowing along the gas passage.

The apparatus may further include a ring-shaped pumping baffle surrounding the edge of the support member and being provided with a vacuum pressure through the exhaust pipe.

Also, the pumping baffle may have pumping holes formed on an upper surface thereof opposite to the reaction member, the pumping holes may be provided only on a region adjacent to the gas passage on an upper surface opposed to the high-speed vortex reaction cell, The pumping holes may be provided at regular intervals on the upper surface opposite to the plurality of reaction cells.

Further, a gap may be formed between the pumping baffle and the support member, and air forming an air curtain for blocking (suppressing) the straightness of the gas flowing along the gas passage through the gap may be injected.

Further, the support member may have six stages in which the substrates are placed on the upper surface; The stage may have a depth greater than the thickness of the substrate such that gas flowing along the gas path is generated in the upper part of the stage where the substrate is placed.

The gap between the upper surface of the support member and the lower surface of the high-speed vortex reaction cell is narrower than the gap between the upper surface of the substrate placed on the stage and the lower surface of the high-speed vortex reaction cell.

In addition, the gas injector may inject a first process gas corresponding to a precursor gas into the gas passage.

According to an aspect of the present invention, there is provided a process chamber comprising: a processing chamber having an upper chamber opened at an upper portion thereof and an upper chamber closing an open upper portion of the lower chamber; A support member installed in the lower chamber and on which a plurality of substrates are placed on the same plane; A lower surface of the upper chamber facing the support member; A plurality of reaction cells arranged in a concentric circle about the center of the upper chamber; One of the plurality of reaction cells is a high velocity vortex reaction cell formed with a gas passage extending from a center to an edge of the upper chamber so as to cross the center of the bottom surface, And a gas injector for injecting gas into the gas passage of the high-speed vortex reaction cell so that the gas has a straight-line property; And an air curtain member provided at an end of the gas passage and forming an air curtain for blocking (suppressing) the straightness of the gas flowing along the gas passage.

Further, the plurality of reaction cells are partitioned by partition members radially disposed from the center of the upper chamber; The bottom surface of the high-speed vortex reaction cell has the same height as the bottom surface of the adjacent partition member, and the bottom surface of the other reaction cells of the plurality of reaction cells may be lower in height than the bottom surface of the partition member.

Further, the support member may have six stages in which the substrates are placed on the upper surface; The depth of the stage may be deeper than the thickness of the substrate so that vortex flow occurs at the top of the stage where the gas is flowing over the gas passage.

The apparatus also includes a ring-shaped pumping baffle surrounding the periphery of the support member and provided with a vacuum pressure through the exhaust pipe, wherein the high velocity vortex reaction cell further includes a side air outlet formed along an edge adjacent the pumping baffle And the side air outlet may form an air curtain for blocking gas escaping from the high velocity vortex reaction cell to the pumping baffle.

According to the embodiment of the present invention, high-speed vortex flow of the gas is induced in the high-speed vortex reaction cell, and a high-quality thin film can be secured.

According to the embodiment of the present invention, the bottom surface of the high-speed vortex reaction cell has the same height as the bottom surface of the neighboring partition member, thereby minimizing gas inflow into the neighboring reaction cells.

According to the embodiment of the present invention, it is possible to extend the preventive maintenance cycle and shorten the maintenance time by simplifying the gas feeding structure in the high-speed vortex reaction cell.

1 is a view showing a substrate processing apparatus having a conventional gas supply structure of an injector type.
2 is a view showing a substrate processing apparatus having a conventional shower head type gas supply structure.
3 is a view for explaining a substrate processing apparatus according to the present invention.
4 is an exploded perspective view of the substrate processing apparatus shown in Fig.
5 is a bottom view of the upper chamber.
6 is a perspective view showing a high-speed vortex reaction cell.
7 is a front view of the high velocity eddy current reaction cell shown in FIG.
8 is a cross-sectional view showing a main portion showing a high-speed eddy current cell and a substrate stage.
9 is a diagram showing a schematic diagram and gas concentration of a high-speed eddy reaction cell and a substrate stage.
FIGS. 10A to 10D are diagrams showing stepwise the flow of gas in the high-speed vortex reaction cell.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout the specification and claims. The description will be omitted.

(Example)

FIG. 3 is a view for explaining a substrate processing apparatus according to the present invention, and FIG. 4 is an exploded perspective view of the substrate processing apparatus shown in FIG.

3 and 4, a substrate processing apparatus 10 according to an embodiment of the present invention includes a process chamber 100, a substrate susceptor 200 as a support member, a pumping baffle 300, a partition member 400, and a reaction member 500.

The process chamber 100 is composed of an upper chamber 120 and a lower chamber 110. The lower chamber 110 is provided with a substrate susceptor 200 on which the substrates are mounted. The lower chamber 110 has an upper surface opened, and the lower chamber 110 has an upper chamber 120 at a side wall edge. That is, the inner space of the process chamber 100 is sealed from the outside by coupling the upper chamber 120 and the lower chamber 110 together. The process chamber 100 is provided with an entrance (not shown) on one side. The entrance and exit of the substrates (W) are performed during the process.

The substrate susceptor 200 is installed in the inner space of the process chamber 100. The substrate susceptor 200 is of a layout type in which a plurality of substrates are placed. The stage 212 provided on the substrate susceptor 200 may have a circular shape similar to that of the substrate. For example, the substrate susceptor 200 is formed in a disc shape having six stages 212 on which the substrates W are placed.

The stage 212 may be disposed concentrically at 60 degrees around the center of the substrate susceptor 200. Although the substrate susceptor 200 having six stages 212 has been illustrated and described in the present embodiment, the number of stages of the substrate susceptor 200 may be less than six or six or more have.

The stage 212 may be formed in a groove shape having a predetermined depth from the upper surface of the substrate susceptor 200. The depth of the stage 212 may be greater than the thickness of the substrate. Therefore, a reaction space can be provided above the stage 212 when the substrate W is placed on the stage 212. [ For example, if the substrate thickness is 0.75 mm, the depth of the stage may be provided from 1.3 mm to 2.0 mm. For example, the gap between the upper surface of the substrate susceptor 200 and the lower surface of the high velocity vortex reaction cell 510 may be 1 to 3 mm. Thus, when the stage 212 is placed in the high velocity vortex reaction cell 510, a vortex formation space having a depth of 1.55 mm to 4.30 mm may be provided between the high velocity vortex reaction cell 510 and the substrate. The reaction space of the stage 212 thus provided may be a vortex forming space in which a part of the gas flowing into the gas passage 520 is vortexed as it passes through the high-speed vortex reaction cell 510.

Meanwhile, each stage 212 of the support member 200 may be provided with a heater 270 for heating the substrate W placed thereon. The heater 270 heats the substrate to raise the temperature of the substrate W to a predetermined temperature (process temperature).

The substrate susceptor 200 may be rotated by a driving unit (not shown) connected to the rotating shaft 280. The driving unit for rotating the substrate susceptor 200 preferably uses a stepping motor provided with an encoder capable of controlling the rotational speed and the rotational speed of the driving motor.

Although not shown, the substrate susceptor 200 may be provided with a plurality of lift pins (not shown) for raising and lowering the substrate W in each stage. The lift pins ascend and descend the substrate W, thereby separating the substrate W from the stage of the substrate susceptor 200 or placing the substrate W on the stage.

The pumping baffle 300 is provided in a ring shape surrounding the edge of the substrate susceptor 200. The pumping baffle 300 receives the vacuum pressure through the exhaust pipe 310 and transfers the vacuum pressure to the reaction member 500. To this end, the pumping baffle 300 has first pumping holes 320 on its upper surface opposite the reaction member 500.

The pumping baffle 300 can be divided into a first zone 302 facing the high velocity vortex reaction cell 510 and a second zone 304 facing the other reaction cell except for the high velocity vortex reaction cell 510 . The pumping holes 302 are formed only in a portion adjacent to the gas passage 520 in the first region 302 and the gas passage 520 is formed in the second region 304. [ Pump the gas passing through.

For reference, a gap S is provided between the substrate susceptor 200 and the pumping baffle 300. An inert gas is supplied to the inner space of the lower chamber 110, and this inert gas can be injected through the gap S. The injected inert gas serves as an air curtain for limiting the flow of the first process gas through the gas passage 520.

5 is a bottom view of the upper chamber.

Referring to FIGS. 3 to 5, a partition member 400 and a reaction member 500 are provided on the bottom surface of the upper chamber 120.

The partition member 400 is disposed radially from the center of the upper chamber 120 on the bottom surface of the upper chamber 120 facing the substrate susceptor 200. The partition member 400 is provided in a rod shape and can be detachably installed on the bottom surface of the upper chamber 120. For example, the partition members 400 may be arranged at 90-degree intervals concentrically about the center of the upper chamber 120.

The reaction member 500 may be installed on the bottom surface of the upper chamber 120 so as to face the substrate susceptor 200. The reaction member 500 may include a plurality of reaction cells arranged concentrically about the center of the upper chamber 120. A plurality of reaction cells may be disposed between the partition members 400. One of the plurality of reaction cells may be a high velocity vortex reaction cell 510.

For example, the plurality of reaction cells may include three reaction cells 500-1, 500-2, and 500-3 and one high-speed vortex reaction cell 510, which may be integrally or separately provided on the bottom surface of the upper chamber 120 Can be installed. The three reaction cells 500-1, 500-2, and 500-3 provide concave and wide reaction spaces partitioned by the partition members 400, and one high-speed vortex reaction cell 510 provides a gas passage 520 do. The three reaction cells 500-1, 500-2, and 500-3 and the high-speed vortex reaction cell 510 have a disc shape as a whole, and each may be provided in a fan shape partitioned at intervals of 90 degrees. For example, although the three reaction cells 500-1, 500-2, and 500-3 and one high-speed vortex reaction cell 510 have a fan shape at intervals of 90 degrees, the present invention is not limited to this, Also, it can be configured differently according to the number of installations, and it can be configured differently in size, shape and installation position according to the process chamber type.

The third reaction cell 500-3 of the three reaction cells may be provided with a rod-shaped injection nozzle 700 for injecting a second process gas, which is a reactant gas. The second process gas is supplied to the third reaction cell 500-3 through the rod-shaped injection nozzle 700. However, if necessary, the rod-shaped injection nozzle may be omitted, and the central nozzle unit 800 may be omitted. May be formed to supply the second process gas to the reaction space of the third reaction cell 500-3.

A central nozzle unit 800 is installed at the center of the upper chamber 120. The central nozzle unit 800 independently injects purge gas supplied from a supply member (not shown) into each of the first reaction cell 500-1 and the second reaction cell 500-2, which are disposed opposite to each other. That is, the central nozzle unit 800 may be formed at the side thereof with injection openings (not shown) for supplying the purge gas to the reaction cells 500-1 and 500-2. A gas injector 530 for injecting the first process gas into the gas passage 520 of the high-speed vortex reaction cell 510 may be disposed at one side of the central nozzle unit 800. The gas injector 530 may be provided integrally or integrally with the central nozzle unit 800.

Although not shown, the substrate processing apparatus may include a gas supply unit for supplying the gas to each of the gas injector 530, the central nozzle unit 800, and the bar size injection nozzle 700.

FIGS. 6 and 7 are a perspective view and a front view showing a high-speed vortex reaction cell, FIG. 8 is a main cross-sectional view showing a high-speed vortex reaction cell and a substrate stage, FIG.

6 to 9, a gas passage 520 through which a first process gas corresponding to a precursor gas passes at a high flow rate may be formed in the high-speed eddy current cell 510. The gas passage 520 may be provided in the form of a straight groove formed at an edge from the center of the upper chamber 120 so as to cross the center of the bottom surface 512.

The high velocity vortex reaction cell 510 is provided with a gas ejector 530 at one end of the gas passage 520 near the center of the upper chamber 120. The gas injector 530 injects gas so as to have a linearity in the longitudinal direction of the gas passage 520. The high velocity eddy current reaction cell 510 includes an air discharge port 540 at the end of the gas passage 520 and side air discharge ports 548 formed along the edge adjacent to the pumping baffle 300.

The air outlet 540 forms an air curtain for blocking (suppressing) the straightness of the gas flowing along the gas passage 520. The side air outlet 548 forms an air curtain to block the flow of the gas escaping from the reaction space 219 into the pumping baffle. The air injected from the air outlet 540 and the side air outlet 548 may be an inert gas. The high-speed vortex reaction cell 510 has a bottom surface 512 that is lower in height than the bottom surfaces of the other reaction cells 500-1, 500-2, and 500-3. In one example, the bottom surface 512 of the high-speed vortex reaction cell 510 may have the same height as the bottom surface of the adjacent partition member 400.

As shown in FIG. 9, in the above-described high-speed vortex reaction cell 510, the gas concentration is lowered only at the edge, and the gas concentration is uniform throughout. On the other hand, the air curtain formed through the side air outlets 548 serves to confine the gas escaping from the edge of the reaction space 291, while compensating for the concentration deviation generated at the edge, thereby minimizing the concentration deviation . 9, the hatching portions indicated on both side edges are portions showing the concentration compensation that can be obtained by using the side air ejection openings 548. In the example shown in Fig.

FIGS. 10A to 10D are diagrams showing stepwise the flow of gas in the high-speed vortex reaction cell.

10A to 10D, when the first process gas, which is a precursor gas, is injected from the gas injector 530, the first process gas is supplied to the gas passage 520 of the high-speed vortex reaction cell 510 at a high flow rate Flow. When the stage 212 enters under the gas passage 520, a part of the first process gas in the gas passage 520 flows into the reaction space 219 (upper part of the substrate) ). ≪ / RTI > The air curtain formed by the air ejected from the air outlet 540 and the air curtain formed by the inert gas injected from the gap between the substrate susceptor 200 and the pumping baffle 300 pass through the gas passage 520, (Suppresses) the linearity of the first process gas flowing along the first process gas. Approximately, the air curtain can be expected to have a gas blocking effect of about 30%. The gas that has passed through the air curtain is exhausted through the pumping holes 302 of the pumping baffle 300.

The first process gas blocked by the air curtain flows into the reaction space 219 in the upper part of the stage 212 (upper part of the substrate) to form a swirling flow, thereby reacting with the upper surface of the substrate. The first process gas flowing into the reaction space above the stage 212 (upper portion of the substrate) remains in the vortex flow in the reaction space and the outflow to the neighboring other reaction cells is minimized. The reason for this is that the gap between the bottom surface of the high-speed vortex reaction cell 510 and the top surface of the substrate susceptor 200 is very narrow and its area is large, thereby preventing the first process gas from spreading to other reaction cells.

That is, the first process gas in the high-speed vortex reaction cell 510 flows in the reaction space 219 between the gas passage and the stage 212 (upper substrate) at a high flow velocity, The effect can be reduced by reducing the amount of exhaust of the first process gas exhausted into the pumping baffle 300 and re-supplying it to the reaction space above the stage 212, as well as minimizing the outflow of the first process gas to the neighboring reaction cells A fast deposition effect can be expected with only a small amount of gas.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: process chamber 200: substrate susceptor
300: pumping baffle 400: partition member
500: Reaction member

Claims (16)

A substrate processing apparatus comprising:
A process chamber having a lower chamber having an upper portion open and an upper chamber closing an open upper portion of the lower chamber;
A support member installed in the lower chamber and on which a plurality of substrates are placed on the same plane;
A lower surface of the upper chamber facing the support member; And a reaction member having a plurality of reaction cells arranged in a concentric circle about the center of the upper chamber;
Wherein one of the plurality of reaction cells
And a high velocity vortex reaction cell formed with a gas passage extending from the center of the upper chamber to an edge thereof across the center of the bottom surface. The method according to claim 1,
The high velocity eddy current cell
A gas injector provided at one end of the gas passage close to the center of the upper chamber and injecting gas so as to have a linearity in the longitudinal direction of the gas passage; And
Further comprising an air discharge port provided at an end of the gas passage and forming an air curtain for blocking (suppressing) the straightness of the gas flowing along the gas passage. 3. The method according to claim 1 or 2,
The high velocity eddy current cell
And a bottom surface having a height lower than a bottom surface of the other reaction cells of the plurality of reaction cells. 3. The method according to claim 1 or 2,
The plurality of reaction cells
The upper chamber being partitioned by partitioning members disposed radially from the center of the upper chamber;
Wherein the bottom surface of the high-speed vortex reaction cell has the same height as the bottom surface of the adjacent partition member. 3. The method of claim 2,
The air-
And discharges the air vertically downward perpendicular to the flow of the gas flowing along the gas passage. 3. The method according to claim 1 or 2,
Further comprising a ring-shaped pumping baffle surrounding the edge of the support member and provided with a vacuum pressure through the exhaust pipe. The method according to claim 6,
The pumping baffle
Pumping holes are formed on an upper surface facing the reaction member,
Wherein the pumping holes are provided only in a region adjacent to the gas passage on an upper surface opposed to the high-speed vortex reaction cell,
Wherein the pumping holes are provided at regular intervals on an upper surface opposite to the plurality of reaction cells except for the high-speed vortex reaction cell. The method according to claim 6,
Wherein the high velocity vortex reaction cell further comprises a side air outlet formed along an edge adjacent to the pumping baffle,
Wherein the side air outlet defines an air curtain for blocking gas escaping from the high velocity vortex reaction cell to the pumping baffle. The method according to claim 6,
Wherein a gap is formed between the pumping baffle and the support member and air is formed which forms an air curtain to block (suppress) the straightness of the gas flowing along the gas passage through the gap. . 3. The method of claim 2,
The support member
Six stages in which the substrates are placed on the top surface are recessed;
Wherein the stage has a depth greater than the thickness of the substrate such that gas flowing along the gas path generates a vortex flow at the top of the stage on which the substrate is placed. 11. The method of claim 10,
Wherein an interval between the upper surface of the support member and the lower surface of the high-speed vortex reaction cell is narrower than an interval between an upper surface of the substrate placed on the stage and a lower surface of the high-speed vortex reaction cell. 3. The method of claim 2,
Wherein the gas injector injects a first process gas corresponding to a precursor gas into the gas passage. A substrate processing apparatus comprising:
A process chamber having a lower chamber having an upper portion open and an upper chamber closing an open upper portion of the lower chamber;
A support member installed in the lower chamber and on which a plurality of substrates are placed on the same plane;
A lower surface of the upper chamber facing the support member; A plurality of reaction cells arranged in a concentric circle about the center of the upper chamber;
Wherein one of the plurality of reaction cells is a high velocity vortex reaction cell formed with a gas passage extending from the center of the upper chamber to an edge thereof across the center of the bottom surface,
And a gas injector installed at the center of the upper chamber for injecting gas into the gas passage of the high-speed vortex reaction cell so that the gas has a linearity;
And an air curtain member provided at an end of the gas passage and forming an air curtain for blocking (suppressing) the straightness of the gas flowing along the gas passage. 14. The method of claim 13,
The plurality of reaction cells
The upper chamber being partitioned by partitioning members disposed radially from the center of the upper chamber;
The bottom surface of the high-speed vortex reaction cell has the same height as the bottom surface of the adjacent partition member,
Wherein the bottoms of the other reaction cells of the plurality of reaction cells are lower in height than the bottom of the partitioning member. 14. The method of claim 13,
The support member
Six stages in which the substrates are placed on the top surface are recessed;
Wherein the depth of the stage is greater than the thickness of the substrate such that gas flowing along the gas path is generated in the upper portion of the stage where the substrate is placed. 14. The method of claim 13,
Further comprising a ring-shaped pumping baffle surrounding the edges of the support member and being provided with vacuum pressure through the exhaust pipe,
Wherein the high velocity vortex reaction cell further comprises a side air outlet formed along an edge adjacent to the pumping baffle,
Wherein the side air outlet defines an air curtain for blocking gas escaping from the high velocity vortex reaction cell to the pumping baffle.

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