Abstract:
Provided are a substrate processing device and a method of handing particles thereof. The substrate processing device includes: a process chamber providing a space in which a substrate is processed; a substrate support unit arranged in the process chamber and supporting the substrate; a plasma chamber providing a space in which plasma is generated; a gas supply unit supplying a process gas to the plasma chamber; a plasma source installed in the plasma chamber, wherein the plasma source generates the plasma from the process gas; a radio frequency (RF) power supply providing the plasma source with an RF signal for generating the plasma; a baffle arranged on the substrate support unit, wherein the baffle evenly supplies the plasma to a processing space in the process chamber; a direct current (DC) power supply applying a DC voltage to the baffle; a discharge unit discharging a particle generated in the process chamber by substrate processing; and a control unit controlling the DC power supply and handing the particle to prevent the contamination of the substrate by the particle.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This U.S. non-provisional patent application claims priority under 35 U.S.C. §119 of Korean Patent Application No. 10-2014-0085212, filed on Jul. 8, 2014, the entire contents of which are hereby incorporated by reference. 
       BACKGROUND OF THE INVENTION 
       [0002]    The present invention disclosed herein relates to a substrate processing device and a method of handling particles thereof. 
         [0003]    Recently, a cleaning or etching process of substrate processing processes has mainly used a dry process rather than a wet process using chemicals. Among others, dry cleaning and dry etching have been widely used which remove a thin film from a substrate by using plasma. 
         [0004]    A particle that is generated by a reaction between a gas and the thin film during such a dry process is consistently deposited throughout a chamber and thus interferes with the process. Furthermore, when such a particle falls onto the substrate, a corresponding part may have a defect. 
         [0005]    When the particle is generated in the substrate processing process using plasma, the particle is charged by the plasma and clings to a surface of a chamber by electric force or floats in the plasma. Then, when the process ends and the generation of the plasma stops, pumping is performed so that the particles in the chamber are discharged through a pump line, but there is a limitation in that some of the particles in this process remain on the substrate and thus contaminates the substrate. 
       SUMMARY OF THE INVENTION 
       [0006]    The present invention provides a substrate processing device that handles particles in a substrate processing process to prevent the particles from remaining on a substrate, and a method of handling particles thereof. 
         [0007]    The present invention also provides a substrate processing device that includes a particle handling process during a substrate processing process that does not affect the generation of plasma, and a method of handling particles thereof. 
         [0008]    The present invention also provides a substrate processing device that effectively discharges particles piled up in a chamber to the outside of the chamber during a process, and a method of handing particles thereof. 
         [0009]    Embodiments of the present invention provide substrate processing devices including: a process chamber providing a space in which a substrate is processed; a substrate support unit arranged in the process chamber and supporting the substrate; a plasma chamber providing a space in which plasma is generated; a gas supply unit supplying a process gas to the plasma chamber; a plasma source installed in the plasma chamber and generating the plasma from the process gas; a radio frequency (RF) power supply providing the plasma source with an RF signal for generating the plasma; a baffle arranged over the substrate support unit and evenly supplying the plasma to a processing space in the process chamber; a direct current (DC) power supply applying a DC voltage to the baffle; a discharge unit discharging a particle generated in the process chamber during substrate processing; and a control unit controlling the DC power supply and handing the particle to prevent the contamination of the substrate by the particle. 
         [0010]    In some embodiments, the DC power supply may supply a negative DC voltage to the baffle. 
         [0011]    In other embodiments, the control unit may enable the DC power supply to apply the negative DC voltage to the baffle after substrate processing ends. 
         [0012]    In still other embodiments, the control unit may enable the DC power supply to initiate the application of the negative DC voltage when the RF power supply ends the output of an RF signal. 
         [0013]    In even other embodiments, the control unit may enable the DC power supply to end the application of the negative DC voltage when the substrate is discharged from the process chamber. 
         [0014]    In yet other embodiments, the DC power supply may apply a positive DC voltage to the baffle. 
         [0015]    In further embodiments, the control unit may enable the DC power supply to apply the positive DC voltage to the baffle during substrate processing. 
         [0016]    In still further embodiments, the control unit may enable the DC power supply to initiate the application of the positive DC voltage when the RF power supply initiates the output of an RF signal. 
         [0017]    In even further embodiments, the control unit may enable the DC power supply to end the application of the positive DC voltage when the substrate is discharged from the process chamber. 
         [0018]    In yet further embodiments, after the application of the positive DC voltage ends, the control unit may enable the DC power supply to further apply a positive DC voltage to the baffle for a preset time. 
         [0019]    In much further embodiments, the substrate processing devices may further include an intake duct arranged between the plasma chamber and the process chamber and connecting a plasma generation space to a substrate processing space, wherein the baffle is coupled to an end of the intake duct adjacent to the process chamber. 
         [0020]    In other embodiments of the present invention, methods of handling by a substrate processing device a particle generated during substrate processing include injecting by a gas supply unit a process gas to a plasma chamber; providing by an RF power supply a plasma source with an RF signal to process a substrate; and applying by a DC power supply a DC voltage to a baffle to prevent the substrate from becoming contaminated by the particle. 
         [0021]    In some embodiments, the applying of the DC voltage may include applying by the DC power supply a negative DC voltage to the baffle. 
         [0022]    In other embodiments, the applying of the negative DC voltage may include applying by the DC power supply a negative DC voltage to the baffle after substrate processing ends. 
         [0023]    In still other embodiments, the applying of the negative DC voltage to the baffle after the substrate processing ends may include initiating the application of a negative DC voltage by the DC power supply when the RF power supply ends the output of an RF signal. 
         [0024]    In even other embodiments, the applying of the negative DC voltage to the baffle after the substrate processing ends may include ending the application of a negative DC voltage by the DC power supply when the substrate is discharged from a process chamber. 
         [0025]    In yet other embodiments, the applying of the DC voltage may include applying by the DC power supply a positive DC voltage to the baffle. 
         [0026]    In further embodiments, the applying of the positive DC voltage may include applying by the DC power supply a positive DC voltage to the baffle during substrate processing. 
         [0027]    In still further embodiments, the applying of the positive DC voltage to the baffle during the substrate processing may include initiating by the DC power supply the application of a positive DC voltage when the RF power supply initiates the output of an RF signal. 
         [0028]    In even further embodiments, the applying of the positive DC voltage to the baffle during the substrate processing may include ending the application of a positive DC voltage by the DC power supply when the substrate is discharged from a process chamber. 
         [0029]    In yet further embodiments, the methods may further include, after the application of the positive DC voltage ends, applying by the DC power supply to apply a positive DC voltage to the baffle for a preset time. 
         [0030]    In still other embodiments of the present invention, the methods according to embodiments of the present invention are implemented as a program that may be executed by a computer, and are recorded in a computer readable recording medium. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0031]    The accompanying drawings are included to provide a further understanding of the present invention, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present invention and, together with the description, serve to explain principles of the present invention. In the drawings: 
           [0032]      FIG. 1  is an exemplary diagram of a substrate processing device according to an embodiment of the present invention; 
           [0033]      FIG. 2  is an exemplary diagram for explaining orders in which a radio frequency (RF) power supply and a direct current (DC) power supply are controlled to handle a particle according to an embodiment of the present invention; 
           [0034]      FIG. 3  is an exemplary diagram representing the behavior of a particle according to an embodiment of the present invention; 
           [0035]      FIG. 4  is an exemplary diagram for explaining orders in which an RF power supply and a DC power supply are controlled to handle a particle according to another embodiment of the present invention; 
           [0036]      FIG. 5  is an exemplary diagram representing the behavior of a particle according to another embodiment of the present invention; 
           [0037]      FIG. 6  is an exemplary diagram representing the behavior of a particle according to still another embodiment of the present invention; 
           [0038]      FIG. 7  is an exemplary flow chart of a method of handing a particle according to an embodiment of the present invention; 
           [0039]      FIG. 8  is an exemplary flow chart of a DC voltage application process according to an embodiment of the present invention; and 
           [0040]      FIG. 9  is an exemplary flow chart of a DC voltage application process according to another embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS  
       [0041]    Other advantages and features of the present invention, and implementation methods thereof will be clarified through following embodiments to be described in detail with reference to the accompanying drawings. The present invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure is thorough and complete and fully conveys the scope of the present invention to a person skilled in the art. Further, the present invention is only defined by scopes of claims. 
         [0042]    Even if not defined, all the terms used herein (including technology or science terms) have the same meanings as those generally accepted by typical technologies in the related art to which the present invention pertains. The terms defined in general dictionaries may be construed as having the same meanings as those used in the related art and/or the present disclosure and even when some terms are not clearly defined, they should not be construed as being conceptual or excessively formal. 
         [0043]    The terms used herein are only for explaining embodiments and not intended to limit the present invention. The terms of a singular form in the disclosure may also include plural forms unless otherwise specified. The terms used herein “includes”, “comprises”, “including” and/or “comprising” do not exclude the presence or addition of one or more compositions, ingredients, components, steps, operations and/or elements other than the compositions, ingredients, components, steps, operations and/or elements that are mentioned. In the present disclosure, the term “and/or” indicates each of enumerated components or various combinations thereof. 
         [0044]    Various embodiments of the present invention are described below in detail with reference to the accompanying drawings. 
         [0045]      FIG. 1  is an exemplary diagram of a substrate processing device  10  according to an embodiment of the present invention. 
         [0046]    Referring to  FIG. 1 , the substrate processing device  10  may process, such as clean, etch or ash a thin film on a substrate S by using plasma. The thin film to be processed may be a nitride film, which may be a silicon nitride film but the type of the thin film to be processed is not limited thereto. 
         [0047]    The substrate processing device  10  may have a process unit  100 , a discharge unit  200 , and a plasma generation unit  300 . The process unit  100  may provide a space on which the substrate is placed and processes are performed. The discharge unit  200  may externally discharge a process gas staying in the process unit  100  and the by-products of a reaction generated in a substrate processing process, and maintain the pressure in the process unit  100  at a set pressure. The plasma generation unit  300  may generate plasma from a process gas externally supplied and supply the plasma to the process unit  100 . 
         [0048]    The process unit  100  may include a process chamber  110 , a substrate support unit  120 , and a baffle  130 . A processing space  111  in which the substrate processing process is performed may be formed in the process chamber  110 . The upper wall of the process chamber  110  may be open and a sidewall thereof may have an opening (not shown). A substrate may enter and exit the process chamber  110  through the opening. The opening may be opened or closed by an opening/closing member such as a door (not shown). A discharge hole  112  may be formed at the bottom of the process chamber  110 . The discharge hole  112  may be connected to the discharge unit  200  and provide a path through which gases staying in the process chamber  110  and the by-products of a reaction are externally discharged. 
         [0049]    The substrate support unit  120  may support the substrate S. The substrate support unit  120  may include a susceptor  121  and a support shaft  122 . The susceptor  121  may be placed in the processing space  111  and provided in a disc shape. The susceptor  121  may be supported by the support shaft  122 . The substrate S may be placed on the top of the susceptor  121 . An electrode (not shown) may be provided in the susceptor  121 . The electrode may be connected to an external power supply and generate static electricity by applied power. Generated static electricity may fix the substrate S to the susceptor  121 . A heating member  125  may be provided in the susceptor  121 . According to an example, the heating member  125  may be a heating coil. Also, a cooling member  126  may be provided in the susceptor  121 . The cooling member may be provided as a cooling line through which cooling water flows. The heating member  125  may heat the substrate S to a preset temperature. The cooling member  126  may forcibly cool the substrate S. The substrate S on which processing is completed may be cooled to room temperature or a temperature needed for the next process. 
         [0050]    The baffle  130  may be placed over the susceptor  121 . Holes  131  may be formed in the baffle  130 . The holes  130  may be provided as through holes that are provided from the top of the baffle  130  to the bottom thereof, and may be evenly formed throughout the baffle  130 . 
         [0051]    Referring back to  FIG. 1 , the plasma generation unit  300  may be arranged over the process chamber  110 . The plasma generation unit  300  may discharge a process gas to generate plasma, and supply generated plasma to the processing space  111 . The plasma generation unit  300  may include a first radio frequency (RF)  311 , a plasma chamber  312  and a coil  313 . Furthermore, the plasma generation unit  300  may further include a first source gas supply unit  320 , a second source gas supply unit  322  and an intake duct  340 . 
         [0052]    The plasma chamber  312  may be arranged external to the process chamber  110 . According to an embodiment, the plasma chamber  312  may be arranged over the process chamber  110  and coupled thereto. The plasma chamber  312  may include a discharge space  311  of which the top and the bottom are opened. The upper end of the plasma chamber  312  may be airtight by a gas supply port  325 . The gas supply port  325  may be connected to the first source gas supply unit  320 . A first source gas may be supplied to the discharge space  311  through the gas supply port  325 . The first source gas may include difluoromethane (CH 2 F 2 ), nitrogen (N 2 ), and oxygen (O 2 ). Selectively, the first source gas may further include another kind of gas such as tetrafluoromethane (CF 4 ). 
         [0053]    The coil  313  may be an inductively coupled plasma (ICP) coil. The coil  313  may be wound several times on the plasma chamber  312  outside the plasma chamber  312 . The coil  313  may be wound on the plasma chamber  312  on a region corresponding to the discharge space  311 . One end of the coil  313  may be connected to an RF power supply  311  and the other end thereof may be earthed. 
         [0054]    The RF power supply  311  may supply high-frequency power to the coil  313 . The high-frequency power supplied to the coil  313  may be applied to the discharge space  311 . An induced electric field may be formed in the discharge space  311  by the high-frequency power and a first process gas in the discharge space  311  may obtain energy needed for ionization from the induced electric field to be converted into a plasma state. 
         [0055]    Although an ICP source using the coil  313  is described above, the plasma source is not limited thereto and may also be configured as a CCP type that uses facing electrodes. 
         [0056]    The intake duct  340  may be arranged between the plasma chamber  312  and the process chamber  110 . The intake duct  340  may enable the opened top of the process chamber  130  to be airtight and the baffle  130  may be coupled to the lower end of the intake duct  340 . An intake space  341  may be formed in the intake duct  340 . The intake space  341  may be provided as a path that connects the discharge space  311  to the processing space  111  and supplies the plasma generated in the discharge space  311  to the processing space  111 . 
         [0057]    The intake space  341  may include an intake hole  341   a  and a diffusion space  341   b.  The intake hole  341   a  may be formed under the discharge space  311  and connected thereto. Plasma generated in the discharge space  311  may flow into the intake hole  341   a.  The diffusion space  341   b  may be arranged under the intake hole  341   a  and connect the intake hole  341   a  to he processing space  111 . The diffusion space  341   b  may have a cross section that gradually widens progressively downward. The diffusion space  341   b  may have an inverted funnel shape. Plasma supplied from the intake hole  341   a  may be diffused while passing through the diffusion space  341   b.    
         [0058]    The second source gas supply unit  322  may be connected to a path through which plasma generated in the discharge space  311  is supplied to the process chamber  110 . For example, the second source gas supply unit  322  may supply a second source to a path through which plasma flows, between where the lower end of the coil  313  is arranged and where the upper end of the diffusion space  341   b  is arranged. According to an example, the second source gas may include nitrogen trifluoride NF 3 . Selectively, processes may also be performed only by the first source gas without the supply of the second source gas. 
         [0059]    According to an embodiment of the present invention, the substrate processing device  10  further includes a DC power supply  350 , and a control unit (not shown) that controls the DC power supply. The DC power supply  350  applies a DC voltage to the baffle  130 . The control unit controls the DC power supply  350  so that a particle generated in a chamber by substrate processing does not contaminate the substrate S. 
         [0060]    As such, when the DC power supply  350  applies the DC voltage to the baffle  130 , the baffle  130  is coupled to the lower end of the intake duct  340  through an insulator (not shown). 
         [0061]      FIG. 2  is an exemplary diagram for explaining orders in which the RF power supply  311  and the DC power supply  350  are controlled to handle a particle according to an embodiment of the present invention. 
         [0062]    According to an embodiment of the present invention, the DC power supply  350  may apply a negative DC voltage to the baffle  130 . In this case, the control unit may enable the DC power supply  350  to apply a negative DC voltage to the baffle  130  after substrate processing ends. 
         [0063]    For example, referring to  FIG. 2 , the RF power supply  311  may start outputting an RF signal at time t 1  and provide a plasma source (such as a coil  313  in  FIG. 1 ) with the RF signal so that plasma is generated in the plasma chamber  312  and substrate processing is performed. The substrate processing process may be performed for a preset time and the RF power supply  311  may end the output of the RF signal at time t 2  so that the substrate processing process ends. 
         [0064]    Then, when the RF power supply  311  ends the output the RF signal, the control unit may enable the DC power supply  350  to apply a negative DC voltage to the baffle  130  at time t 2 . The application of the negative DC voltage to the baffle  130  may last until the substrate S is discharged from the process chamber  110 . That is, the control unit may enable the DC power supply  350  to end the application of the negative DC voltage at time t 3  when the substrate S is discharged from the process chamber  110 . 
         [0065]      FIG. 3  is an exemplary diagram representing the behavior of a particle according to an embodiment of the present invention. 
         [0066]    As described with reference to  FIG. 2 , when a negative DC power is applied to the baffle  130  after substrate processing ends, a particle that is negatively charged and floats in a chamber may float at a certain distance from the baffle  130  by the baffle  130  negatively-charged even after a process ends. 
         [0067]    That is, the baffle  130  that receives the negative DC voltage and thus is negatively charged applies a repulsive force to the negatively-charged particle so that the particle floats on the baffle  130 . As a result, since the particle does not fall onto the substrate S even after a process ends, it is possible to prevent the substrate from becoming contaminated. 
         [0068]    Then, when the substrate S is discharged from the process chamber  110 , the baffle  130  no longer receives the negative DC voltage. Thus, a particle floating on the baffle  130  falls and is discharged to the outside of the chamber by the discharge unit  200 . 
         [0069]      FIG. 4  is an exemplary diagram for explaining orders in which the RF power supply  311  and the DC power supply  350  are controlled to handle a particle according to another embodiment of the present invention. 
         [0070]    According to another embodiment of the present invention, the DC power supply  350  may apply a positive DC voltage to the baffle  130 , unlike the above-described embodiments. In this case, the control unit may enable the DC power supply  350  to apply a positive DC voltage to the baffle  130  while substrate processing is performed. 
         [0071]    Referring to  FIG. 4 , when the RF power supply  311  outputs an RF signal at time t 1  and plasma is generated in the plasma chamber  312 , the DC power supply  350  may also apply the negative DC voltage to the baffle  130  at time t 1 . 
         [0072]    According to the present embodiment, the application of the positive DC voltage to the baffle  130  lasts even after time t 2  when the RF power supply  311  ends the output of the RF signal. Then, the DC power supply  350  may end the application of the positive DC voltage to the baffle  130  at time t 3  when the substrate S is discharged from the process chamber  110 . 
         [0073]      FIG. 5  is an exemplary diagram representing the behavior of a particle according to another embodiment of the present invention. 
         [0074]    As described with reference to  FIG. 4 , when a positive DC voltage is applied to the baffle  130  while substrate processing is performed, a negatively-charged particle is attached to a positively-charged baffle  130 . That is, an attractive force works between the baffle  130  positively-charged by the application of the positive DC voltage and the negatively-charged particle, so the particle may be attached to the baffle  130 . As a result, since a particle generated during a process clings to the baffle  130  in a chamber and thus does not fall onto a substrate until the substrate S is discharged from the chamber, it is possible to prevent the substrate from becoming contaminated. 
         [0075]    Then, when the substrate S is discharged from the process chamber  110 , the positive DC voltage that has been applied to the baffle  130  has been interrupted. Thus, the particle attached to the baffle  130  is discharged to the outside of the chamber by the discharge unit  200 . 
         [0076]    According to still another embodiment of the present invention, after the application of the positive DC voltage ends, the control unit may enable the DC power supply  350  to further apply a positive DC voltage to the baffle  130  for a preset time. 
         [0077]    Referring to  FIG. 4 , even after time t 3  when the application of the positive DC voltage to the baffle  130  ends, the DC power supply  350  may further apply a positive DC voltage to the baffle  130  for a preset time t′. 
         [0078]    As a result, even after the application of the positive DC voltage to the baffle  130  ends, it is possible to separate a particle from the baffle  130  and effectively discharge the particle to the outside of a chamber. 
         [0079]      FIG. 6  is an exemplary diagram representing the behavior of a particle according to still another embodiment of the present invention. 
         [0080]    As described with reference to  FIG. 5 , when a positive DC voltage is applied to the baffle  130  to attach particles generated during a process to the baffle  130 , some particles may be positively-charged and attached still to the baffle  130  even if the positive DC voltage applied to the baffle  130  is interrupted. 
         [0081]    According to the present embodiment, even after the application of the positive DC voltage to the baffle  130  ends, the DC power supply  350  applies a positive DC voltage to the baffle for a certain time once more and thus it is possible to effectively discharge particles attached to the baffle  130  to the outside of a chamber. 
         [0082]    The embodiment in  FIG. 4  applies a positive DC voltage to the baffle  130  once more after time t 3  when the application of the positive DC voltage ends, the number of times being applied may be two or more. 
         [0083]    Furthermore, as described with reference to  FIG. 1 , the substrate processing device  10  may further include the intake duct  340  between the plasma chamber  312  and the process chamber  110  to connect a plasma generation space to a substrate processing space. In this case, the baffle  130  may be coupled to an end the intake duct  340  adjacent to the process chamber  110 , such as a lower end of the intake duct. 
         [0084]    As a result, since the distance between the baffle  130  and the plasma chamber  312  is secured to correspond to the size of the intake duct  340 , a positive voltage applied to the baffle  130  may not affect plasma generation even if a positive DC voltage is applied to the baffle  130 , as described previously. 
         [0085]    Thus, since the operation of the DC power supply  350  for handing particles as described previously does not interfere with plasma generation, it is possible to prevent particle handing according to an embodiment of the present invention from decreasing the productivity of a process. 
         [0086]      FIG. 7  is an exemplary flow chart of a method  20  of handing a particle according to an embodiment of the present invention. 
         [0087]    The method  20  of handling the particle is performed by the substrate processing device  10  according to an embodiment of the present invention as described above to prevent the substrate S from becoming contaminated by the particle. 
         [0088]    As shown in  FIG. 7 , the method  20  of handling the particle may include injecting by the gas supply unit  320  a process gas into the plasma chamber  312  in step S 210 , providing by the RF power supply  311  the plasma source  313  with an RF signal to process the substrate S in step S 220 , and applying by the DC power supply  350  a DC voltage to the baffle  130  to prevent the substrate S from becoming contaminated by the particle in step S 230 . 
         [0089]    According to an embodiment of the present invention, applying the DC voltage in step S 230  may include applying by the DC power supply  350  a negative DC voltage to the baffle  130 . In this case, applying the negative DC voltage may include applying by the DC power supply  350  the negative DC voltage to the baffle  130  after substrate processing ends. 
         [0090]      FIG. 8  is an exemplary flow chart of a DC voltage application process S 230  according to an embodiment of the present invention. 
         [0091]    As shown in  FIG. 8 , applying the negative DC voltage to the baffle  130  after substrate processing ends may include initiating the application of a negative DC voltage by the DC power supply  350  in step S 231 , when the RF power supply  311  ends the output of an RF signal. 
         [0092]    Furthermore, applying the negative DC voltage to the baffle  130  after substrate processing ends may further include ending the application of the negative DC voltage by the DC power supply  350  in step S 232 , when the substrate S is discharged from the process chamber  110 . 
         [0093]    According to another embodiment of the present invention, applying the DC voltage in step S 230  may include applying by the DC power supply  350  a positive DC voltage to the baffle  130 . In this case, applying the positive DC voltage may include applying by the DC power supply  350  the positive DC voltage to the baffle  130  during substrate processing. 
         [0094]      FIG. 9  is an exemplary flow chart of a DC voltage application process S 230  according to another embodiment of the present invention. 
         [0095]    As shown in  FIG. 9 , applying the positive DC voltage to the baffle  130  during the substrate processing may include initiating the application of a positive DC voltage by the DC power supply  350  in step S 233 , when the RF power supply  311  initiates the output of an RF signal. 
         [0096]    Furthermore, applying the positive DC voltage to the baffle  130  during substrate processing may further include ending the application of the positive DC voltage by the DC power supply  350  in step S 234 , when the substrate S is discharged from the process chamber  110 . 
         [0097]    Also, according to still another embodiment of the present invention, the method  20  of handling the particle may further include applying by the DC power supply  350  a positive DC voltage to the baffle  130  for a preset time t′ in step S 235 , after the application of the positive DC voltage ends in step S 234 . 
         [0098]    The method  20  of handing the particle according to an embodiment of the present invention as described previously may be produced as a program to be executed on a computer and may be stored in a computer readable recording medium. The computer readable recording medium includes all kinds of storage devices storing data that may be read by a computer system. Examples of the computer readable recording medium are a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device. According to an embodiment of the present invention, it is possible to prevent a particle from staying on a substrate, thus prevent the substrate from becoming contaminated, and improve the yield of a process. 
         [0099]    According to an embodiment of the present invention, since handling a particle during a process does not interfere with plasma generation, it is possible to enhance the productivity of the process. 
         [0100]    According to an embodiment of the present invention, it is possible to effectively discharge particles piled up in a chamber to the outside of the chamber. 
         [0101]    Although the present invention is described above through embodiments, the embodiments above are only provided to describe the spirit of the present invention and not intended to limit the present invention. A person skilled in the art will understand that various modifications to the above-described embodiments may be made. The scope of the present invention is defined only by the following claims.