KR102008056B1 - Reactor for chemical vapor deposition and chemical vapor deposition apparatus using the same - Google Patents

Abstract

The present invention relates to a chemical vapor deposition reactor and a chemical vapor deposition apparatus including the same, comprising a reaction vessel having a reaction chamber for forming a thin film on a wafer, the reaction vessel is at least two members are detachably coupled to each other As a result, the cost of maintenance and management can be reduced. In addition, as one reaction chamber is formed inside the chamber of the reactor and a plurality of reactors having one reaction chamber are formed, it is possible to prevent deterioration of the thin film while improving productivity. In addition, as each reaction chamber operates independently of each other, flexible production can be achieved while improving productivity.

Description

Reactor for chemical vapor deposition and chemical vapor deposition apparatus including the same {REACTOR FOR CHEMICAL VAPOR DEPOSITION AND CHEMICAL VAPOR DEPOSITION APPARATUS USING THE SAME}

The present invention relates to a chemical vapor deposition reactor and a chemical vapor deposition apparatus including the same, and more particularly, it is possible to deposit or single-crystal growth of metal and metal compounds on a wafer (metal) using a metal precursor (metal precursor) And a chemical vapor deposition apparatus including the same.

In general, a thin film deposition method is classified into physical vapor deposition (PVD) using physical collision and chemical vapor deposition (CVD) using chemical reaction.

PVD includes sputtering and the like, and CVD includes thermal CVD using heat and plasma enhanced CVD (PECVD) using plasma.

Meanwhile, a nitride single crystal material represented by gallium nitride (GaN) single crystal has been spotlighted as an optical semiconductor device, unlike a conventional silicon (Si) -oriented electronic device semiconductor, and has become a central material of the LEDs (Light Emitting Diodes) industry. Accordingly, leading LED companies and research institutes around the world are actively developing equipment and processes for growing high-quality nitride single crystals. In particular, as a nitride single crystal growth apparatus for LED manufacturing, an organic metal chemical vapor deposition apparatus (MOCVD) using an CVD method using an organic metal precursor as a raw material is used.

On the other hand, nitride single crystal materials of higher quality than nitride single crystals used in manufacturing LEDs are known to have high applicability in manufacturing blue LDs (Laser Diodes) devices or next-generation power semiconductor devices. In order to grow high quality nitride single crystals, a separate device, a halide vapor phase epitaxy (HVPE) device, is known to be advantageous.

Both MOCVD and HVPE are devices for growing nitride single crystals, but have distinct structural differences as follows.

That is, in the case of MOCVD, a commercially available metal-organic precursor, which is a metal raw material, is introduced into a high temperature reactor to grow a nitride single crystal, and NH3 gas is introduced as a nitride raw material. Although high temperature is required in the reactor, there is no gas that has strong corrosiveness to metal among the raw material gases used, so it is mainly called a cold-wall heating method in which a heater is mounted on the bottom surface of the cylindrical metal chamber and the other surface is coldly cooled. Apply. As a result, the top or side of the chamber is opened to allow access to the substrate. In addition, since the airtightness is easily maintained with the metal chamber, the internal pressure can be freely changed during the process.

In the case of HVPE, in order to grow nitride single crystal, HCl, which is a strong corrosive gas, is flowed into a high-temperature pure metal separately prepared as a metal raw material to generate an XCl reactant, which is then used as a precursor by adding it to a high-temperature reactor. At the same time, NH3 gas is used as a raw material for nitriding, but since HCl is simultaneously supplied to the reactor, metal cannot be used as a reactor material. This is because metals and high temperature HCl react to corrode and generate impurities. In this case, therefore, the reactor is made of ceramic (preferably quartz tube) in which airtightness is maintained. That is, the reactor is generally made of a single elongated ceramic tube having an inlet and an outlet of the source gas, and the area in which the nitride single crystal is grown must be heated to a high temperature, so that the wall of the pipe except the inlet and the outlet (Wall ), The so-called Hot-Wall heating method is used to heat the furnace. Therefore, substrate entry and exit should only use the inlet or outlet (preferably the outlet) of the ceramic tube, and since the reactor itself is a ceramic material, it cannot give a large range of pressure changes, and the process is mainly performed under pressure in the normal pressure range.

On the other hand, both MOCVD and HVPE equipment can grow nitride single crystal, but there are the following limitations in industrial sites for mass production of single crystal materials.

That is, in case of MOCVD, mass production equipment is mainly supplied by US and German companies, but competition to increase the production capacity (Capa.) Is fierce, and for this purpose, it is mainly developed by simply expanding a conventional reactor. . As a result, the cost of the equipment itself and its maintenance costs have increased significantly, and now simple reactor expansion is nearing physical and efficient limits. Therefore, in order to increase the yield of nitride single crystal material per equipment, it is necessary to develop a reactor different from the conventional method.

In addition, HVPE, which is known to be capable of growing higher quality nitride monocrystals compared to MOCVD, has been mass-produced by several companies in the past, but it is rarely used in industrial sites. It remains at the level of producing only test nitride nitride crystals. The main reason is that the reactor is in the form of an elongated ceramic tube, which already has structural limitations for mass production. Even if it is possible to mount a large amount of substrate by increasing the diameter of the tube, the nonuniformity between them is meaningful at least 3% or less, so a considerable engineering device will be required to overcome this. In addition, in the case of the hot-wall heating method, it takes a long time to cool the reactor after the completion of the process, which is also very difficult to overcome.

In order to overcome such problems, a new type of chemical vapor deposition apparatus is disclosed in Korean Patent Publication No. 10-1670494.

Referring to Korean Patent Publication No. 10-1670494, a conventional chemical vapor deposition apparatus is formed to deposit thin films on a plurality of wafers in one process to increase productivity.

Specifically, the conventional chemical vapor deposition apparatus includes a chamber 1 and a reactor accommodated in the chamber 1.

The chamber 1 is formed to have a plurality of reaction chambers S to be described later in the chamber 1. That is, the reactor is provided in each reaction chamber (S).

The reactor includes a reaction vessel (not shown) having a reaction chamber (S) for forming a thin film on a wafer, a wafer rotating device (3) for rotating the wafer, and a source gas serving as a raw material of the thin film. And a heater for heating the reaction gas spray nozzle and the reaction chamber (S).

However, in such a conventional chemical vapor deposition reactor and a chemical vapor deposition apparatus including the same, the reaction vessel is integrally formed, and if a part of the reaction vessel is damaged or aged, the entire reaction vessel needs to be replaced. And there was a problem that the management cost is significantly increased.

In addition, as a plurality of reaction chambers are formed in the chamber, there is a problem that the quality of the thin film formed in each reaction chamber is uneven due to interference between the reaction chambers.

In addition, as a plurality of reaction chambers are operated at the same time, there was a problem that flexible production is impossible. That is, since only some reaction chambers cannot be opened and closed, it is not possible to produce different products at the same time at the time of formation, and there is a problem that all reaction chambers should be stopped when problems occur in some reaction chambers.

Republic of Korea Patent Publication No. 10-1670494

Accordingly, an object of the present invention is to provide a chemical vapor deposition reactor and a chemical vapor deposition apparatus including the same that can reduce the maintenance and management costs.

In addition, another object of the present invention is to provide a chemical vapor deposition reactor and a chemical vapor deposition reactor including the same, which may improve productivity and prevent deterioration of a thin film.

In addition, another object of the present invention is to provide a chemical vapor deposition reactor and a chemical vapor deposition reactor including the same, which improves productivity and enables flexible production.

The present invention includes a reaction vessel having a reaction chamber for forming a thin film on the wafer, in order to achieve the object as described above, the reaction vessel for chemical vapor deposition is formed by at least two members are detachably coupled to each other Provide a reactor.

The reaction vessel, the side wall surrounding the side of the reaction chamber; An upper wall covering an upper portion of the reaction chamber; And a base wall covering the lower portion of the reaction chamber, wherein the upper wall and the base wall may be detachably formed on the side wall.

The side wall may include a first side wall on which a reaction gas injection nozzle for generating a reaction gas from the source gas serving as a raw material of the thin film and spraying the reaction gas into the reaction chamber is formed; A second sidewall facing the first sidewall and having an exhaust nozzle for discharging the exhaust gas generated in the thin film formation process; A third sidewall extending from one end of the first sidewall to one end of the second sidewall; And a fourth sidewall facing the third sidewall and extending from the other end of the first sidewall to the other end of the second sidewall, wherein the third sidewall and the fourth sidewall are respectively the first sidewall. And may be detachably formed on the second sidewall.

The upper wall includes a second upper wall facing the reaction chamber and a first upper wall provided on an opposite side of the reaction chamber with respect to the second upper wall, and the base wall includes a second base wall facing the reaction chamber and And a first base wall provided on an opposite side of the reaction chamber with respect to the second base wall, wherein the first upper wall, the first base wall, the third side wall, and the fourth side wall each have a heat insulating material therein. The second upper wall and the second base wall may be formed of a ceramic wall, respectively.

Any one of the third sidewall and the fourth sidewall may be formed to be loaded into and out of the reaction chamber together with a wafer rotator for rotating the wafer.

The base wall includes a second base wall facing the reaction chamber, and one of the third side wall and the fourth side wall is engaged with the second base wall, and the wafer is disposed on the second base wall. When the rotary device is seated, and either one of the third sidewall and the fourth sidewall is removed from the first sidewall and the second sidewall, the second base wall and the wafer rotator are connected to the third sidewall and the second sidewall. It may be formed to be drawn out from the reaction chamber together with any one of the fourth side wall.

A wafer rotating device for rotating the wafer; A reaction gas spray nozzle for generating a reaction gas from a source gas serving as a raw material of the thin film and spraying the reaction gas into the reaction chamber; A heater for heating the reaction chamber; An exhaust nozzle for discharging the exhaust gas generated in the process of forming the thin film; And a chamber having an accommodation space accommodating the reaction vessel, the wafer rotating device, the reaction gas injection nozzle, the heater, and the exhaust nozzle.

The reaction chamber, the wafer rotating device, the reaction gas injection nozzle, the heater, and the exhaust nozzle are each provided in an accommodation space of the chamber, and the reaction chamber may be formed as one inside the chamber.

The reaction vessel may be formed to leak the gas of the reaction chamber into the receiving space of the chamber, the chamber may be formed to prevent the gas of the receiving space from leaking to the outside of the chamber.

The chamber may further include a chamber corrosion preventing means for preventing the chamber from being corroded by the gas leaked from the reaction chamber.

The chamber corrosion prevention means, the inert gas supply pipe for supplying an inert gas to the receiving space; A cooling passage for cooling the chamber; And a heat insulating material that prevents heat generated from the heater from being transferred to the chamber.

And, the present invention, the reactor; A raw material gas supplier for supplying a raw material gas that is a raw material of the thin film to the reactor; An inert gas supplier for supplying an inert gas to the reactor to prevent corrosion of the chamber; An operating gas supplier for supplying a working gas for rotating the wafer to the reactor; An exhauster for discharging the exhaust gas generated in the process of forming the thin film from the reactor; And a power supply for supplying power to the heater of the reactor, wherein the reactor is formed in plural, and each reactor includes the source gas supply, the inert gas supply, the working gas supply, the exhaust gas, and the power supply. Provided is a chemical vapor deposition apparatus that is selectively connected and disconnected.

The chemical vapor deposition reactor and the chemical vapor deposition apparatus including the same according to the present invention includes a reaction vessel having a reaction chamber for forming a thin film on the wafer, the reaction vessel is at least two members are detachably coupled to each other As it is formed, by replacing only the broken or aged member of the reaction vessel, it is possible to reduce the maintenance and management costs.

In addition, as one reaction chamber is formed inside the chamber of the reactor and a plurality of reactors having one reaction chamber are formed, it is possible to prevent deterioration of the thin film while improving productivity.

In addition, as each reaction chamber operates independently of each other, flexible production can be achieved while improving productivity.

1 is a schematic diagram showing a chemical vapor deposition apparatus including a reactor according to an embodiment of the present invention;
2 is a perspective view of the reactor of FIG.
3 is a perspective view showing the back of FIG.
4 is a cross-sectional view taken along the line AA of FIG.
5 is a perspective view illustrating a state in which the chamber is removed from the reactor of FIG. 2;
6 is a perspective view showing the back of FIG.
7 is a perspective view illustrating a state in which the first upper wall is removed from FIG. 5;
8 is a perspective view illustrating a state in which the second upper wall is removed from FIG. 7;
FIG. 9 is a perspective view illustrating a state in which the wafer rotator is removed together with the sidewalls of FIG. 7.

Hereinafter, a chemical vapor deposition reactor and a chemical vapor deposition apparatus including the same according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram illustrating a chemical vapor deposition apparatus including a reactor according to an embodiment of the present invention, FIG. 2 is a perspective view illustrating the reactor of FIG. 1, and FIG. 3 is a perspective view illustrating the rear surface of FIG. 2. 4 is a cross-sectional view taken along line AA of FIG. 2, FIG. 5 is a perspective view illustrating a state in which the chamber is removed from the reactor of FIG. 2, FIG. 6 is a perspective view illustrating the rear surface of FIG. 5, and FIG. 8 is a perspective view illustrating a state in which the first upper wall is removed, and FIG. 8 is a perspective view illustrating a state in which the second upper wall is removed in FIG. 7, and FIG. 9 illustrates a state in which the wafer rotator is removed together with the side wall in FIG. 7. One perspective view.

As shown in these figures, the chemical vapor deposition apparatus according to an embodiment of the present invention, the reactor 100 for forming a thin film on the wafer, supplying the raw material gas that is the raw material of the thin film to the reactor 100 Raw material gas supplier 200, inert gas supplier 300 for supplying the inert gas to prevent corrosion to the reactor 100, the working gas supplier 400 for supplying the reactor gas to the operating gas for rotating the wafer (100) ), A power supply 600 for supplying power to the exhaust gas 500 for discharging the exhaust gas generated in the process of forming the thin film from the reactor 100 and the heater 140 to be described later. It may include.

The reactor 100 includes a reaction vessel 110 having a reaction chamber S1 in which the thin film is formed, and a wafer rotating apparatus 120 for rotating the wafer with the working gas supplied from the working gas supplier 400. Reaction gas injection nozzle 130 for generating a reaction gas from the source gas supplied from the source gas supplier 200 and spraying the reaction gas into the reaction chamber S1 and the power supplied from the power supply 600. Heater 140 for heating the chamber (S1), exhaust nozzle 150 for guiding the exhaust gas generated in the process of forming the thin film to the exhaust gas 500, the reaction vessel 110, the wafer rotating device ( 120, a chamber 160 having an accommodating space S2 for accommodating the reaction gas injection nozzle 130, the heater 140, and the exhaust nozzle 150.

The reaction vessel 110 includes side walls 115, 116, 117, and 118 surrounding the side of the reaction chamber S1, upper walls 111 and 112 covering the upper portion of the reaction chamber S1, and the reaction chamber ( Base walls 113 and 114 covering the lower portion of S1) may be included.

The side walls 115, 116, 117, and 118 may face the first side wall 115 on which the reaction gas injection nozzle 130 is formed and the first side wall 115, and the exhaust nozzle 150 may be formed. From the second side wall 116, the third side wall 117 extending from one end of the first side wall 115 to one end of the second side wall 116 and the other end of the first side wall 115 It may include a fourth sidewall 118 extending to the other end of the second sidewall 116 to face the third sidewall 117.

Here, the reaction vessel 110 is formed of a ceramic material such as, for example, quartz, SiC, etc., if at least two of the reaction vessel 110 is damaged or aged, so that only the damaged or aged parts can be replaced, at least 2 Dog members may be formed by being detachably coupled to each other. In this case, the detachably coupled means that the assembly is performed by contact, fitting, groove and hole alignment, and the like, and for example, solidification such as adhesion or welding is not performed.

Specifically, the reaction vessel 110 is the side wall (115, 116, 117) that the aging proceeds relatively slowly the upper wall (111, 112) and the base wall (113, 114), respectively , 118 may be detachably formed.

The side walls 115, 116, 117, and 118 may also be divided into two or more members, and the members may be formed to be detachable from each other. That is, the third sidewall 117 is detachable to one end of the first sidewall 115 and one end of the second sidewall 116, and the fourth sidewall 118 is the first sidewall 115. The other end of the) and the other end of the second side wall 116 may be formed detachably.

On the other hand, the upper wall (111, 112) can accommodate the heat insulating material (I), as will be described later, when the upper wall 111, which accommodates the heat insulating material (I) is replaced, the replacement cost is considerable, thereby reducing the replacement cost of the upper wall In order to accommodate the heat insulator I to be described later, the first upper wall 111 covering the inner wall surface of the chamber 160 and the heat insulator I to be described later are not accommodated, and the first top wall 111 and the reaction chamber are not included. It may include a second upper wall 112 interposed between (S1). That is, by depositing a deposition material on the second upper wall 112 that does not include the heat insulating material (I), it is possible to reduce the replacement cost of the upper wall by replacing only the second upper wall (112).

Similarly, the base walls 113 and 114 may accommodate the heat insulating material I to be described later, and the cost of replacing the base wall is considerable when the base wall 113 containing the heat insulating material I is replaced. In order to reduce the pressure, the first base wall 113 to accommodate the heat insulating material (I) to be described later and cover the inner wall surface of the chamber 160 and the first base wall 113 not to receive the heat insulating material (I) to be described later will be described. And a second base wall 114 interposed between the reaction chamber S1. In other words, by depositing a deposition material on the second base wall 114 that does not include the heat insulating material (I), it is possible to reduce the replacement cost of the base wall by replacing only the second base wall 114.

Here, the side walls 115, 116, 117, and 118 also have a wall including the heat insulating material I and a wall not including the heat insulating material I, similarly to the upper walls 111 and 112 and the base walls 113 and 114. In order to simplify the structure and reduce the cost, the sidewalls 115, 116, 117, and 118, which are relatively slowly aged, may be formed to have only a wall including the insulation material I. have. That is, for example, the third side wall 117 and the fourth side wall 118 may be formed such that the heat insulating material I is provided inside the ceramic wall material such as quartz.

Meanwhile, any one of the third sidewall 117 and the fourth sidewall 118 is loaded into and taken out of the reaction chamber S1 together with the wafer rotator 120 for easy insertion and withdrawal of the wafer. It can be formed possibly. That is, any one of the third side wall 117 and the fourth side wall 118 is coupled to the second base wall 114, and the wafer rotating apparatus 120 is disposed on the second base wall 114. ) Is seated and when either one of the third sidewall 117 and the fourth sidewall 118 is removed from the first sidewall 115 and the second sidewall 116, the second base wall ( 114 and the wafer rotator 120 may be formed to be withdrawn from the reaction chamber S1 together with one of the third sidewall 117 and the fourth sidewall 118.

The wafer rotating device 120 is a base, a susceptor 124 (susceptor) 124 that is rotatably installed on top of the base and is rotatably installed on top of the susceptor 124 The wafer may include a satellite 126 on which the wafer is seated.

In addition, the wafer rotating apparatus 120 lifts and rotates the susceptor 124 from the base with the working gas supplied from the working gas supplier 400, and rotates the satellite 126 into the susceptor 124. It can be formed to float and rotate from).

Here, the wafer rotating device 120 revolves the wafer about the center of rotation of the susceptor 124 by the rotation of the susceptor 124, the satellite by the rotation of the satellite 126 The wafer may be rotated based on the center of rotation of the light 126. That is, the satellite 126 may be provided in plurality, and the plurality of satellites 126 may be spaced apart at equal intervals along the rotation direction of the susceptor 124.

The reaction gas injection nozzle 130 may be formed to react the reactant provided therein with the source gas supplied from the source gas supplier 200 to generate the reaction gas and then spray the reaction gas into the reaction chamber S1. Can be.

In addition, the reaction gas injection nozzle 130 may include a multi-layered internal structure and a plurality of injection holes to uniformly inject the reaction gas.

The reaction gas injection nozzle 130 may be formed somewhat differently according to the type of chemical vapor deposition apparatus. That is, in the case of MOCVD, the reaction gas injection nozzle 130 may be formed of a metal material and may be formed to be cooled through a separate cooling passage 174. On the other hand, in the case of HVPE, the reaction gas injection nozzle 130 is formed of a ceramic material (preferably quartz), it is formed to be capable of injecting the metal raw material Pure Metal without separating the reactor 100, the heater 140 It may be formed to be heated by the source zone (Z2) of the later.

The heater 140 is interposed between the first base wall 113 and the second base wall 114 and the heating wire 144 that generates heat by being supplied with power and the fireproof wall 146 surrounding the heating wire 144. It may include.

In addition, the heater 140, in the case of HVPE, the reaction gas injection nozzle 130 to generate a growth zone (Z1) and the reaction gas for heating the reaction chamber (S1) in which single crystal growth takes place May comprise a source zone (Z2) for heating.

The exhaust nozzle 150 may be formed to suck the exhaust gas from the reaction chamber S1 to guide the exhaust gas 500 so that the reaction gas is smoothly supplied to the reaction chamber S1. Here, the exhaust gas is an operating gas discharged into the reaction chamber S1 after operating the wafer and an inert gas injected into the accommodation space S2 to prevent corrosion of the chamber 160 as will be described later. Inert gas flowing into the reaction chamber (S1).

The exhaust nozzle 150 may include a multi-layered internal structure and a plurality of suction holes to uniformly suck the exhaust gas.

The chamber 160 may be formed such that only one reaction chamber S1 is provided in the accommodating space S2 of the chamber 160 so as to prevent deterioration of thin film quality due to interference between the reaction chambers S1. That is, the reaction chamber 110, the wafer rotating device 120, the reaction gas injection nozzle 130, the heater 140 and the exhaust nozzle 150 are each formed in the accommodation space (S2). Can be.

And, the chamber 160, the source gas can be supplied from the source gas supplier 200 to the reaction gas injection nozzle 130, the working gas from the operating gas supply 400 to the wafer rotating device 120 Can be supplied, power can be supplied from the power supply 600 to the heater 140, and inert gas can be supplied from the inert gas supply 300 to the receiving space S2 of the chamber 160. The exhaust gas may be discharged from the exhaust nozzle 150 to the exhaust device 500, and one side of the chamber 160 may be opened and closed to enable the loading and unloading of the wafer. ) Gas (at least one of the raw material gas, the working gas, the inert gas and the exhaust gas) can be formed to prevent leakage from the receiving space (S2) to the outside of the chamber 160.

Here, since the reaction vessel 110 is formed by simple assembly as described above, the gas of the reaction chamber S1 (at least one of the raw gas, the working gas, the inert gas, and the exhaust gas) is the reaction vessel 110. It may leak into the receiving space (S2) of the chamber 160 through the gap of. However, since the chamber 160 seals the accommodation space S2, the gas leaked from the reaction chamber S1 is prevented from leaking to the outside of the chamber 160, thereby preventing a safety accident. Therefore, the quality can be further improved. Specifically, when hydrogen is additionally added in the process of forming the thin film, the thin film quality may be further improved. However, when hydrogen is introduced into the reaction chamber S1 in a state in which the reaction vessel 110 is decomposable and assembled to reduce maintenance and repair costs as in the present embodiment, a gap of the reaction vessel 110 is achieved. Hydrogen leaks from the reaction chamber (S1) through, and when the leaked hydrogen is exposed to the outside as it is, there is a risk of explosion. In consideration of this, in order to form the reaction container 110 to be sealed, unlike the present embodiment, the reaction container 110 should be integrally formed, and in this case, a problem of an increase in maintenance and repair costs as in the prior art occurs. In addition, quality improvement cannot be expected when additional hydrogen is not added. However, in the present embodiment, the reaction vessel 110 is formed to be disassembled and assembled to reduce maintenance and repair costs, and at the same time, the gas leaking from the reaction vessel 110 to the chamber 160 is exposed to the outside. By preventing hydrogen from being injected, the safety accident can be prevented and the quality can be improved.

Meanwhile, as described above, the gas in the reaction chamber S1 may leak into the accommodation space S2, and thus the chamber 160 may be corroded by the leaked gas. In consideration of this, in the present embodiment, it may include a chamber corrosion preventing means 170 to prevent the chamber 160 is corroded by the gas leaked from the reaction chamber (S1).

The chamber corrosion preventing means 170, the inert gas supply pipe 172 for supplying the inert gas supplied from the inert gas supply 300 to the receiving space (S2), the cooling to cool the wall of the chamber 160 It may include a heat insulating material (I) to prevent the heat generated from the flow path 174 and the heater 140 to be transferred to the wall of the chamber 160.

The inert gas supply pipe 172 is formed to inject an inert gas between the chamber 160 and the reaction vessel 110 to prevent the gas leaked from the reaction chamber (S1) to contact the chamber 160. Can be.

The cooling passage 174 may be formed so that the coolant flows through the inside of the wall of the chamber 160. That is, the gas leaked from the reaction chamber S1 does not corrode the chamber 160 even when it is in contact with the chamber 160 at a temperature lower than a predetermined temperature. In the present embodiment, the cooling passage 174 is By cooling the chamber 160 to a temperature lower than a predetermined temperature, the chamber 160 may not be corroded even when contacted with the gas leaked from the reaction chamber S1.

On the other hand, the cooling passage 174 may improve the productivity. That is, after the thin film is formed on the wafer, the reactor 100 needs to be sufficiently cooled in order to take out the wafer. The cooling passage 174 improves the cooling rate of the reactor 100, thereby completing the thin film formation. The time taken to take out and import a wafer for forming a thin film can be shortened.

The insulation (I) is a component that prevents corrosion of the chamber 160 in a similar principle to the cooling passage 174. That is, the heat insulating material I prevents heat generated by the heater 140 from being transferred to the chamber 160, thereby suppressing a temperature increase of the chamber 160, thereby preventing the heat from the reaction chamber S1. The chamber 160 may not be corroded even if it contacts the leaked gas.

The heat insulator (I), the interior of the first upper wall 111, the interior of the first base wall 113, not only to suppress the temperature rise of the chamber 160, but also to improve the high temperature heating efficiency of the reaction vessel. It may be formed in the third sidewall 117 and the fourth sidewall 118.

On the other hand, in the reactor 100 according to the present embodiment, the reaction chamber (S1) is formed as one inside the chamber 160 in order to prevent the degradation of quality due to the interference between the reaction chamber (S1) as described above As a result, productivity may be reduced. In consideration of this, the chemical vapor deposition apparatus according to the present embodiment is provided with a plurality of the reactor 100 to improve the productivity while maintaining the quality improvement, each reactor 100 is the source gas supplier 200, the It may be formed to be selectively connected (activated) and cut off (deactivated) to the inert gas supply 300, the working gas supply 400, the exhaust gas 500 and the power supply 600. That is, the reactor 100 includes the first reactor 100 to the n-th reactor 100, all of the first reactor 100 to the n-th reactor 100 is activated, or the first reactor 100 ) To n-th reactor 100 may be all deactivated, or some of the first reactors 100 to n-th reactor 100 may be activated and the others may be deactivated.

In addition, in order to improve space utilization, the reactor 100 has a height (distance from the wafer to the second upper wall 112) of 50 mm or less in the reaction chamber S1, and the overall thickness of the chamber 160. (The distance from the bottom surface of the chamber 160 to the ceiling surface) is 200 mm or less, and the plurality of reactors 100 may be stacked, for example, in the vertical direction.

Hereinafter, the effects of the chemical vapor deposition reactor 100 and the chemical vapor deposition apparatus including the same will be described.

That is, the chemical vapor deposition reactor 100 and the chemical vapor deposition apparatus including the same, the reaction chamber (S1) is heated by the heater 140, the reaction gas injection nozzle 130 The reaction gas may be injected into the reaction chamber S1, and the wafer may be rotated by the wafer rotating device 120 to deposit (grow) a thin film on the upper surface of the wafer.

Here, as the reaction chamber (S1) is formed in one inside the chamber 160, deterioration of thin film quality due to interference between the reaction chambers (S1) may be prevented.

In addition, as the reactor 100 having one reaction chamber S1 is formed in plural, productivity may be improved while preventing degradation of thin film quality.

And, as each reactor 100 can be selectively activated and deactivated, a plurality of the reactor 100 can be operated independently of each other. That is, while some of the plurality of reactors 100 are forming a thin film, the operation of the other reactors 100 may be stopped and opened. Accordingly, while inspecting and repairing the troubled reactor 100 among the plurality of reactors 100, it is possible to continue to produce a thin film in another reactor 100, thereby minimizing the decrease in production during maintenance and repair. Can be. In addition, products having different time periods, products having different sizes, and the like can be produced at the same time, thereby enabling mass production and flexible production.

And, the reaction vessel 110 is formed by at least two members detachably coupled to each other, by replacing only the broken or aged member of the reaction vessel 110, it is possible to reduce the maintenance and management costs.

In addition, the wafer rotator 120 may be loaded and unloaded when a portion of the sidewalls 115, 116, 117, and 118 of the reaction container 110 is detached, and thus the wafer may be easily loaded and unloaded. In addition, the automation device can be applied, and the productivity can be further improved.

In addition, as the reaction vessel 110 is formed to be disassembled and assembled, gas leaks from the reaction chamber S1, but the chamber 160 prevents external exposure of the gas leaked from the reaction chamber S1. As a result, safety accidents can be prevented and productivity can be further improved by enabling hydrogen injection.

As the inert gas supply pipe 172, the cooling passage 174, and the heat insulating material I are provided, the chamber 160 may be prevented from being corroded by the gas leaked from the reaction chamber S1. Can be.

100: reactor 110: reaction vessel
111: first upper wall 112: second upper wall
113: first base wall 114: second base wall
115: first sidewall 116: second sidewall
117: third sidewall 118: fourth sidewall
120: wafer rotating device 130: reaction gas injection nozzle
140: heater 150: exhaust nozzle
160: chamber 170: chamber corrosion protection means
172: inert gas supply pipe 174: cooling flow path
200: source gas supply 300: inert gas supply
400: working gas supplier 500: exhaust
600: power supply I: insulation
S1: reaction chamber S2: accommodation space

Claims (12)

Reaction container 110 having a reaction chamber (S1) for forming a thin film on the wafer,
The reaction vessel 110 is formed by at least two members are detachably coupled to each other,
The reaction vessel 110, the side wall (115, 116, 117, 118) surrounding the side of the reaction chamber (S1); Upper walls 111 and 112 covering the upper portion of the reaction chamber S1; And base walls 113 and 114 covering the lower portion of the reaction chamber S1.
The side walls 115, 116, 117, and 118 may include a first side wall on which a reaction gas injection nozzle 130 for generating a reaction gas from the source gas serving as a raw material of the thin film and spraying the reaction gas into the reaction chamber S1 is formed. 115); A second sidewall 116 opposed to the first sidewall 115 and having an exhaust nozzle 150 for discharging the exhaust gas generated in the process of forming the thin film; A third sidewall 117 extending from one end of the first sidewall 115 to one end of the second sidewall 116; And a fourth sidewall 118 opposed to the third sidewall 117 and extending from the other end of the first sidewall 115 to the other end of the second sidewall 116.
The upper walls 111 and 112 are provided on the opposite side of the reaction chamber S1 based on the second upper wall 112 and the second upper wall 112 facing the reaction chamber S1. ),
The base walls 113 and 114 are provided on opposite sides of the reaction chamber S1 based on the second base wall 114 and the second base wall 114 facing the reaction chamber S1. Including the base wall 113,
The first upper wall 111, the first base wall 113, the third side wall 117, and the fourth side wall 118 are each formed of a wall made of a ceramic material having a heat insulating material I therein. ,
The second upper wall (112) and the second base wall (114) are each formed of a wall made of a ceramic material, the chemical vapor deposition reactor (100). The method of claim 1,
The upper wall (111, 112) and the base wall (113, 114) is formed on the side wall (115, 116, 117, 118) detachably formed for the chemical vapor deposition reactor (100). The method of claim 2,
And the third sidewall (117) and the fourth sidewall (118) are detachably formed on the first sidewall (115) and the second sidewall (116), respectively. delete The method of claim 3,
Any one of the third sidewall 117 and the fourth sidewall 118 together with the wafer rotator 120 for rotating the wafer is formed to be carried in and out of the reaction chamber (S1). Reactor 100. The method of claim 5,
The base walls 113 and 114 include a second base wall 114 facing the reaction chamber S1.
One of the third sidewall 117 and the fourth sidewall 118 is engaged with the second base wall 114,
The wafer rotating device 120 is mounted on the second base wall 114.
When either one of the third sidewall 117 and the fourth sidewall 118 is removed from the first sidewall 115 and the second sidewall 116, the second base wall 114 and the wafer Reactor (120) is a chemical vapor deposition reactor (100), characterized in that carried out from the reaction chamber (S1) along with any one of the third side wall (117) and the fourth side wall (118). A reaction vessel 110 having a reaction chamber S1 for forming a thin film on a wafer;
A wafer rotating device (120) for rotating the wafer;
A reaction gas injection nozzle (130) for generating a reaction gas from the source gas serving as a raw material of the thin film and spraying the reaction gas into the reaction chamber (S1);
A heater 140 for heating the reaction chamber S1;
An exhaust nozzle 150 for discharging the exhaust gas generated in the process of forming the thin film; And
Chamber 160 having a receiving space (S2) for receiving the reaction vessel 110, the wafer rotating apparatus 120, the reaction gas injection nozzle 130, the heater 140 and the exhaust nozzle 150 Including;
The reaction vessel 110 is formed by at least two members are detachably coupled to each other,
The reaction vessel 110 is formed so that the gas in the reaction chamber (S1) can leak into the receiving space (S2) of the chamber 160,
The chamber 160 is formed to prevent the gas in the accommodation space (S2) from leaking to the outside of the chamber 160,
Further comprising a chamber corrosion preventing means for preventing the chamber 160 is corroded by the gas leaked from the reaction chamber (S1),
The chamber corrosion preventing means includes an inert gas supply pipe 172 for supplying an inert gas to the receiving space (S2); A cooling passage 174 for cooling the chamber 160; And a heat insulator (I) for preventing heat generated from the heater 140 from being transferred to the chamber 160. The method of claim 7, wherein
In the receiving space S2 of the chamber 160, the reaction vessel 110, the wafer rotating device 120, the reaction gas injection nozzle 130, the heater 140, and the exhaust nozzle 150 are respectively. It is provided one by one, the reactor for chemical vapor deposition, characterized in that the reaction chamber (S1) is formed as one inside the chamber (160). delete delete delete A reactor (100) according to any one of claims 1 to 3 and 5 to 8;
A raw material gas supplier 200 for supplying a raw material gas that is a raw material of the thin film to the reactor 100;
An inert gas supplier 300 for supplying an inert gas to the reactor 100;
An operating gas supplier (400) for supplying a working gas for rotating the wafer to the reactor (100);
An exhaust gas (500) for discharging the exhaust gas generated in the process of forming the thin film from the reactor (100); And
It includes; and a power supply 600 for supplying power to the heater 140 of the reactor 100,
The reactor 100 is formed of a plurality,
Each reactor 100 is selectively connected to and disconnected from the source gas supply 200, the inert gas supply 300, the working gas supply 400, the exhaust gas 500 and the power supply 600. Characterized in a chemical vapor deposition apparatus.

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