Patent Publication Number: US-2023162994-A1

Title: Apparatus for treating substrate

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     A claim for priority under 35 U.S.C. § 119 is made to Korean Patent Application No. 10-2021-0161391 filed on Nov. 22, 2021, in the Korean Intellectual Property Office, the entire contents of which are hereby incorporated by reference. 
     BACKGROUND 
     Embodiments of the inventive concept described herein relate to a substrate treating apparatus. 
     In order to manufacture a semiconductor device, a desired pattern is formed on a substrate such as a wafer through various processes on the substrate such as a photolithography process, an etching process, an ashing process, an ion implantation process, and thin film deposition process. Various treating liquids and treating gases are used for each process, and particles and process by-products are generated during the process. In order to remove these particles and process by-products from the substrate, a cleaning process is performed before and after each process. 
     A conventional cleaning process treats the substrate with a chemical and a rinsing liquid. Afterwards, a drying treatment is performed. An embodiment of the drying treatment includes a rotary drying process in which the substrate is rotated at a high speed to remove the rinsing liquid remaining on the substrate. However, there is a concern that this rotary drying method may collapse a pattern formed on the substrate. 
     Thus, recently a supercritical drying process is used for supplying an organic solvent such as an isopropyl alcohol (IPA) onto the substrate to replace a rinsing liquid remaining on the substrate with an organic solvent having a low surface tension, and then supplying a treating fluid (e.g., carbon dioxide) in a supercritical state onto the substrate to remove an organic solvent remaining on the substrate. In the supercritical drying process, the drying gas is supplied to a process chamber with a sealed inside, and the drying gas is heated and pressurized. Both a temperature and a pressure of the drying gas rise above a critical point, and the drying gas phase changes to the supercritical state. 
     In the substrate treating apparatus that performs the supercritical drying process, there is a substrate guide for mounting the substrate transferred in a supercritical treating space, and an outer space of the substrate is empty without any special function other than this substrate guide. In addition, due to the substrate guide, a shapely asymmetry occurs, resulting in a poor uniformity of an airflow. 
     SUMMARY 
     Embodiments of the inventive concept provide a substrate treating apparatus for efficiently treating a substrate. 
     Embodiments of the inventive concept provide a substrate treating apparatus for reducing a process time and improving a productivity. 
     Embodiments of the inventive concept provide a substrate treating apparatus for improving a uniformity of a flow. 
     The technical objectives of the inventive concept are not limited to the above-mentioned ones, and the other unmentioned technical objects will become apparent to those skilled in the art from the following description. 
     The inventive concept provides a substrate treating apparatus. The substrate treating apparatus includes a chamber body having a top body and a bottom body which combine to provide a treating space therein; a substrate support unit configured to support a substrate at the treating space; a fluid supply unit configured to supply a treating fluid to the treating space; a fluid exhaust line for exhausting the treating fluid from the treating space; and a guide member provided to surround a periphery of the substrate supported by the substrate support unit. 
     In an embodiment, the substrate support unit supports a first edge region of the substrate at the treating space, and the guide member is provided to surround a second edge region which is different from the first edge region of the substrate supported by the substrate support unit. 
     In an embodiment, the guide member includes a guide block in an arc shape supported by a bottom surface of the bottom body, and which is positioned at an outside of the second edge region when seen from above. 
     In an embodiment, the substrate support unit includes: fixing rods which are fixedly installed to a bottom surface of the top body to downwardly protrude from the bottom surface of the top body; and a holder which extends in a horizontal direction with respect to the ground from a bottom end of the fixing rod, and which is provided to support a bottom surface of the first edge region of the substrate. 
     In an embodiment, the guide block includes support protrusions at a bottom surface to be spaced apart from the bottom surface of the bottom body. 
     In an embodiment, the guide block includes through holes which the treating fluid passes through. 
     In an embodiment, the treating space is divided into a top space and a bottom space with respect to the substrate supported by the substrate support unit, and the guide block includes top surface positioned at the top space and a bottom surface positioned at the bottom space. 
     In an embodiment, the through hole includes: a first inlet connected to the top space; a second inlet connected to the bottom space; and a connection path connecting the first inlet and the second inlet. 
     In an embodiment, the guide block is provided to be spaced apart from an edge region of the substrate placed on the substrate support unit, and further includes a block driving unit for sliding the guide block to adjust a gap between the guide block and the edge region of the substrate. 
     In an embodiment, the substrate treating apparatus further includes: a lifting/lowering member for lifting and lowering any one of the top body and the bottom body with respect the other one to be spaced apart to an open position or a close position; and a clamping unit configured to clamp the top body and the bottom body positioned at the close position. 
     In an embodiment, the treating space is divided into a top space and a bottom space with respect to the substrate supported on the substrate support unit, and the top body includes: a first supply channel connected to the fluid supply unit to supply the treating fluid to the top space, and the bottom body includes: an exhaust channel connected to the fluid exhaust line to exhaust the treating fluid from the treating space. 
     In an embodiment, the process fluid is a supercritical fluid phase. 
     The inventive concept provides a substrate treating apparatus. The substrate treating apparatus includes a chamber body defining a treating space for treating a substrate, the chamber body including a first chamber body and a second chamber body provided below the first chamber body to be relatively movable with respect to the first chamber body; a lifting/lowering member for lifting and lowering any one of the first chamber body and the second chamber body with respect to the other one to be spaced apart to an open position or a close position; a clamping body for clamping the first chamber body and the second chamber body, if the first chamber body and the second chamber body are in close contact in a close position; and a substrate support unit configured to support the substrate at the treating space; a fluid supply unit configured to supply a treating fluid to the treating space; a fluid exhaust line for exhausting the treating fluid from the treating space; and a guide member provided to surround a periphery of the substrate which is supported by the substrate support unit. 
     In an embodiment, the substrate support unit supports a first edge region of the substrate at the treating space, and the guide member is provided to surround a second edge region which is different from the first edge region of the substrate supported on the substrate support unit. 
     In an embodiment, the substrate support unit includes: fixing rods which are fixedly installed to a bottom surface of the first chamber body to downwardly protrude from the bottom surface of the first chamber body; and a holder which extends in a horizontal direction with respect to the ground from a bottom end of the fixing rod, and which is provided to support a bottom surface of the first edge region of the substrate, and the guide member includes a guide block in an arc shape supported by the second chamber body, and which is positioned at an outside of the second edge region when seen from above. 
     In an embodiment, a passage is provided between the guide block and the second chamber body at which the treating fluid passes through. 
     In an embodiment, the guide block includes through holes which the treating fluid passes through. 
     In an embodiment, the treating space is divided into a top space and a bottom space with respect to the substrate supported by the substrate support unit, and the through hole includes: a first inlet connected to the top space; a second inlet connected to the bottom space; and a connection path connecting the first inlet and the second inlet. 
     The inventive concept provides a substrate treating apparatus for treating a substrate by using a treating fluid in a supercritical state. The substrate treating apparatus includes a chamber body having a top body and a bottom body which combine to provide a treating space therein; a substrate support unit configured to support the substrate at the treating space; a lifting/lowering member for lifting and lowering any one of the top body and the bottom body with respect the other one to be spaced apart to an open position or a close position; a clamping unit configured to clamp the top body and the bottom body positioned at the close position; a fluid supply unit configured to supply the treating fluid to the treating space; a fluid exhaust line for exhausting the treating fluid from the treating space; and a guide block provided to surround a periphery of the substrate supported by the substrate support unit, and wherein the substrate support unit is provided at the top body to support a first edge region of the substrate at the treating space, and the guide member is provided to surround a second edge region which is different from the first edge region of the substrate supported by the substrate support unit. 
     In an embodiment, the guide block includes: support protrusions at a bottom surface of the guide block so the treating fluid passes between the guide block and a bottom surface of the bottom body; and through holes which the treating fluid passes through. 
     According to an embodiment of the inventive concept, a process time may be reduced and a productivity may be improved. 
     According to an embodiment of the inventive concept, a uniformity of a flow may be improved. 
     According to an embodiment of the inventive concept, a characteristic of an inner flow may be adjusted by changing a form of a guide member. 
     The effects of the inventive concept are not limited to the above-mentioned ones, and the other unmentioned effects will become apparent to those skilled in the art from the following description. 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
       The above and other objects and features will become apparent from the following description with reference to the following figures, wherein like reference numerals refer to like parts throughout the various figures unless otherwise specified, and wherein: 
         FIG.  1    illustrates a substrate treating apparatus according to an embodiment of the inventive concept. 
         FIG.  2    illustrates an embodiment of a liquid treating chamber of  FIG.  1   . 
         FIG.  3    illustrates an embodiment of a drying chamber of  FIG.  1   . 
         FIG.  4    schematically illustrates a state of which the top body and the bottom body are positioned in the closed position of  FIG.  3   . 
         FIG.  5    schematically illustrates an embodiment of a drying chamber of  FIG.  3   . 
         FIG.  6    illustrates a state in which a top body and a bottom body of  FIG.  5    are positioned in a close position. 
         FIG.  7    illustrates a support member and a guide member of  FIG.  3   . 
         FIG.  8    is a top view of the support member and the guide member of  FIG.  7   . 
         FIG.  9    is an enlarged view illustrating the support member and the guide member while the top body and the bottom body is positioned in the closed position. 
         FIG.  10    is a partial cut view of a modified embodiment of the guide member. 
         FIG.  11    in an enlarged view illustrating the guide member while the top body and the bottom body is positioned in the closed position. 
         FIG.  12    illustrates another modified embodiment of the guide block. 
         FIG.  13    illustrates another embodiment of the inventive concept. 
     
    
    
     DETAILED DESCRIPTION 
     The inventive concept may be variously modified and may have various forms, and specific embodiments thereof will be illustrated in the drawings and described in detail. However, the embodiments according to the concept of the inventive concept are not intended to limit the specific disclosed forms, and it should be understood that the present inventive concept includes all transforms, equivalents, and replacements included in the spirit and technical scope of the inventive concept. In a description of the inventive concept, a detailed description of related known technologies may be omitted when it may make the essence of the inventive concept unclear. 
     The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the inventive concept. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises”, “comprising,”, “includes”, and/or “including” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. Also, the term “example” is intended to refer to an example or illustration. 
     It will be understood that, although the terms “first”, “second”, “third”, etc., may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the inventive concept. 
     It should be understood that when an element or layer is referred to as being “on,” “connected to,” “coupled to,” or “covering” another element or layer, it may be directly on, connected to, coupled to, or covering the other element or layer or intervening elements or layers may be present. In contrast, when an element is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another element or layer, there are no intervening elements or layers present. Other terms such as “between”, “adjacent”, “near” or the like should be interpreted in the same way. 
     Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as those generally understood by those skilled in the art to which the inventive concept belongs. Terms such as those defined in commonly used dictionaries should be interpreted as consistent with the context of the relevant technology and not as ideal or excessively formal unless clearly defined in this application. 
     Hereinafter, an embodiment of the inventive concept will be described with reference to  FIG.  1    to  FIG.  13   . 
       FIG.  1    illustrates a substrate treating apparatus according to an embodiment of the inventive concept. 
     Referring to  FIG.  1   , the substrate treating apparatus includes an index module  10 , a treating module  20 , and a controller  30 . The index module  10  and the treating module  20  are disposed in a direction. Hereinafter, the direction in which the index module  10  and the treating module  20  are disposed will be referred to as a first direction X, a direction perpendicular to the first direction X will be referred to as a second direction Y, and a direction perpendicular to both the first direction X and the second direction Y will be referred to as a third direction Z. 
     The index module  10  transfers a substrate W from a container C in which the substrate W is stored to the treating module  20 , and stores a substrate W to which a treating has been completed at the treating module  20  in the container C. A lengthwise direction of the index module  10  is provided in the second direction Y. The index module  10  has a load port  12  and an index frame  14 . The index frame  14  is located between the load port  12  and the treating module  20 . The container C in which the substrates W are stored is placed on the load port  12 . A plurality of load ports  12  may be provided, and the plurality of load ports  12  may be disposed along the second direction Y. 
     For the container C, a sealed container such as a front open unified pod FOUP may be used. The container C may be placed on the load port  12  by a transfer means (not illustrated) such as an overhead transfer, an overhead conveyor, or an automatic guided vehicle or by an operator. 
     The index frame  14  is provided with an index robot  120 . In the index frame  14 , a guide rail  124  with its lengthwise direction in the second direction Y may be provided, and the index robot  120  may be provided to be movable along the guide rail  124 . The index robot  120  may include a hand  122  on which the substrate W is placed, and the hand  122  may be forwardly and backwardly movable, rotatable around the third direction Z, and movable along the third direction Z. A plurality of hands  122  are provided to be spaced apart in an up/down direction, and the hands  122  may be forwardly and backwardly movable independently of each other. 
     The controller  30  may control the substrate treating apparatus. The controller may include a process controller e.g., a microprocessor (computer) that executes a control of the substrate treating apparatus, a user interface e.g., a keyboard in which an operator performs a command input operation or the like in order to manage the substrate treating apparatus, a display for visualizing and displaying an operation situation of the substrate treating apparatus, and the like, and a storage unit storing a control program for executing the process performed in the substrate treating apparatus under the control of the process controller, a various data and a program (i.e., treatment recipe) for executing various process in each component according to treating conditions. Further, the user interface and the storage unit may be connected to the process controller. The treatment recipe may be stored in a storage medium in the storage unit, and the storage medium may be a hard disk, and may also be a portable disk, such as a CD-ROM or a DVD, or a semiconductor memory, such as a flash memory. 
     The treating module  20  includes a buffer unit  200 , a transfer chamber  300 , a liquid treating chamber  400 , and a drying chamber  500 . The buffer unit  200  provides a space in which the substrate W carried into the treating module  20  and the substrate W carried out from the treating module  20  temporarily stay. The liquid treating chamber  400  supplies a liquid onto the substrate W to perform a liquid treatment process of liquid treating the substrate W. The drying chamber  500  performs a drying process of removing a liquid remaining on the substrate W. The transfer chamber  300  transfers the substrate W between the buffer unit  200 , the liquid treating chamber  400 , and the drying chamber  500 . 
     A lengthwise direction of the transfer chamber  300  may be provided in the first direction X. The buffer unit  200  may be disposed between the index module  10  and the transfer chamber  300 . The liquid treating chamber  400  and the drying chamber  500  may be disposed on a side of the transfer chamber  300 . The liquid treating chamber  400  and the transfer chamber  300  may be disposed along the second direction Y. The drying chamber  500  and the transfer chamber  300  may be disposed along the second direction Y. The buffer unit  200  may be located at an end of the transfer chamber  300 . 
     According to an embodiment, the liquid treating chambers  400  may be disposed on both sides of the transfer chamber  300 , the drying chambers  500  may be disposed on both sides of the transfer chamber  300 , and the liquid treating chambers  400  may be disposed closer to the buffer unit  200  than the drying chambers  500 . In some embodiments, at one and/or both sides of the transfer chamber  300 , the liquid treating chambers  400  may be provided in an arrangement of A×B (A and B are natural numbers greater than 1 or 1) along the first direction X and the third direction Z. In some embodiments, at one and/or both sides of the transfer chamber  300 , the drying chambers  500  may be provided in an arrangement of C×D (C and D are natural numbers greater than 1 or 1) along the first direction X and the third direction Z. In some embodiments, only liquid treating chambers  400  may be provided at one side of the transfer chamber  300 , and only dry chambers  500  may be provided at the other side of the transfer chamber  300 . 
     The transfer chamber  300  has a transfer robot  320 . In the transfer chamber  300 , a guide rail  324  with its lengthwise direction provided in the first direction X may be provided, and the transfer robot  320  may be provided to be movable on the guide rail  324 . The transfer robot  320  may include a hand  322  on which the substrate W is placed, and the hand  322  may be provided to be forwardly and backwardly movable, rotatable around the third direction Z as an axis, and movable along the third direction Z. A plurality of hands  322  are provided to be spaced apart in the up/down direction, and the hands  322  may be forwardly and backwardly movable independently from each other. 
     The buffer unit  200  includes a plurality of buffers  220  on which the substrate W is placed. The buffers  220  may be disposed to be spaced apart from each other in the third direction Z. A front face and a rear face of the buffer unit  200  are opened. The front face is a surface facing the index module  10 , and the rear face is a surface facing the transfer chamber  300 . The index robot  120  may access the buffer unit  200  through the front face, and the transfer robot  320  may access the buffer unit  200  through the rear face. 
       FIG.  2    schematically illustrates an embodiment of the liquid treating chamber of  FIG.  1   . Referring to  FIG.  2   , the liquid treating chamber  400  includes a housing  410 , a cup  420 , a support unit  440 , a liquid supply unit  460 , and a lifting/lowering unit  480 . 
     The housing  410  may have an inner space in which the substrate W is treated. The housing  410  may have a generally hexahedral shape. For example, the housing  410  may have a rectangular parallelepiped shape. In addition, an opening (not shown) through which the substrate W is taken in or taken out may be formed in the housing  410 . In addition, a door (not shown) for selectively opening and closing the opening may be installed at the housing  410 . 
     The cup  420  may have a container shape with an open top. The cup  420  may have a treating space, and the substrate W may be liquid-treated in the treating space. The support unit  440  supports the substrate W in the treating space. The liquid supply unit  460  supplies the treating liquid onto the substrate W supported by the support unit  440 . The treating liquid may be provided in a plurality of types and may be sequentially supplied onto the substrate W. The lifting/lowering unit  480  adjusts a relative height between the cup  420  and the support unit  440 . 
     In an embodiment, the cup  420  has a plurality of recollecting containers  422 ,  424 , and  426 . Each of the recollecting containers  422 ,  424 , and  426  has a recollecting space for recollecting the liquid used for substrate treatment. Each of the recollecting containers  422 ,  424 , and  426  is provided in a ring shape surrounding the support unit  440 . During a liquid treatment process, the treating liquid scattered by a rotation of the substrate W is introduced into the recollecting space through the inlets  422   a ,  424   a , and  426   a  of each respective recollecting container  422 ,  424 , and  426 . According to an embodiment, the cup  420  has a first recollecting container  422 , a second recollecting container  424 , and a third recollecting container  426 . The first recollecting container  422  is disposed to surround the support unit  440 , the second recollecting container  424  is disposed to surround the first recollecting container  422 , and the third recollecting container  426  is disposed to surround the second recollecting container  424 . The second inlet  424   a  introducing the liquid into the second recollecting container  424  may be located above the first inlet  422   a  introducing the liquid into the first recollecting container  422 , and the third inlet  426   a  introducing the liquid into the third recollecting container  424   a  may be located above the second inlet  424   a.    
     The support unit  440  has a support plate  442  and a drive shaft  444 . A top surface of the support plate  442  is provided in a substantially circular shape and may have a diameter larger than that of the substrate W. A support pin  442   a  is provided at a central part of the support plate  442  to support a bottom surface of the substrate W, and the support pin  442   a  is provided to protrude from the support plate  442  such that the substrate W is spaced apart from the support plate  442  by a predetermined distance. A chuck pin  442   b  is provided at an edge of the support plate  442 . The chuck pin  442   b  is provided to upwardly protrude from the support plate  442 , and supports a side of the substrate W so that the substrate W is stably held by the support unit  440  when the substrate W is rotated. The drive shaft  444  is driven by the driver  446 , is connected to the center of the bottom surface of the substrate W, and rotates the support plate  442  based on its central axis. 
     According to an embodiment, the liquid supply unit  460  may include a nozzle  462 . The nozzle  462  may supply the treating liquid to the substrate W. The treating liquid may be a chemical, a rinsing liquid, or an organic solvent. The chemical may be a chemical with strong acid properties or strong base properties. In addition, the rinsing liquid may be a deionized water. In addition, the organic solvent may be an isopropyl alcohol (IPA). In addition, the liquid supply unit  460  may include a plurality of nozzles  462 , and each nozzle  462  may supply a different type of treating liquid. For example, one of the nozzles  462  may supply a chemical, another one of the nozzles  462  may supply the rinsing liquid, and still another one of the nozzles  462  may supply an organic solvent. In addition, the controller  30  may control the liquid supply unit  460  to supply the organic solvent from the still another one of the nozzles  462  to the substrate W after supplying the rinsing liquid to the substrate W from the another one of the nozzles  462 . Accordingly, the rinsing liquid supplied onto the substrate W may be substituted with an organic solvent having a small surface tension. 
     The lifting/lowering unit  480  moves the cup  420  in the up/down direction. A relative height between the cup  420  and the substrate W is changed by an up/down movement of the cup  420 . As a result, the recollecting containers  422 ,  424 ,  426  for recollecting the treating liquid are changed in accordance with a type of liquid supplied to the substrate W, so that the liquids can be recollected separately. Unlike the above description, the cup  420  is fixedly installed, and the lifting/lowering unit  480  may move the support unit  440  in the up/down direction. 
       FIG.  3    schematically illustrates an embodiment of the drying chamber of  FIG.  1   . 
     Referring to  FIG.  3   , the drying chamber  500  according to an embodiment of the inventive concept may remove the treating liquid remaining on the substrate W by using the drying fluid in a supercritical state. For example, the drying chamber  500  may perform a drying process of removing an organic solvent remaining on the substrate W using the carbon dioxide CO 2  in a supercritical state. 
     The drying chamber  500  may include a chamber body  510  (an exemplary first body), a clamping body  520  (an exemplary second body), a fluid supply unit  530 , a fluid exhaust line  540 , a support member  550 , a first moving unit  560 , a second moving unit  570 , and an anti-friction member  580 . The chamber body  510  and the clamping body  520  may be collectively referred to as a body. 
     The chamber body  510  may include a top body  512  (another exemplary first body), and a bottom body  514  (another exemplary second body). The top body  512  and the bottom body  514  may be combined with each other to form a treating space  511 . Any one of the top body  512  and the bottom body  514  may be configured to be relatively movable with respect to the other. For example, any one of the top body  512  and the bottom body  514  may be moved by a first moving unit  560 . The first moving unit  560  may include a lifting/lowering driver  562  and a lifting/lowering plate  564 . A plurality of lifting/lowering drivers  562  may be provided and connected to the lifting/lowering plate  564 . The lifting/lowering plate  564  may be coupled to the bottom body  514 . When the lifting/lowering driver  562  lifts and lowers the lifting/lowering plate  564 , the bottom body  514  may also be lifted and lowered together with the lifting/lowering plate  564 . A heater for heating a drying fluid supplied to the treating space  511  may be buried in the chamber body  510 . In addition, when the top body  512  and the bottom body  514  are at a close position, a groove may be formed at the bottom body  514  to increase an airtightness of the inner space  511 , and an O-ring  516  which is a sealing member may be inserted into the groove. 
     A position of the top body  512  may be fixed, and the bottom body  514  may be lifted and lowered in a third direction Z by the first moving unit  560 . Hereinafter, a position where the bottom body  514  rises and contacts the top body  512  to form the treating space  511  is referred to as a close position, and a position where the bottom body  514  descends and is spaced apart from the top body  512  is referred to as an open position. 
     The clamping body  520  may include a first clamping body  522  and a second clamping body  524 . The first clamping body  522  and the second clamping body  524  may clamp the chamber body  510  at opposite positions. An inner surface of the first clamping body  522  and the second clamping body  524  can have a shape substantially corresponding to an outer surface of the chamber body  510  in the close position. The first clamping body  522  and the second clamping body  524  may be moved by the second moving unit  570 . A plurality of second moving units  570  may be provided. Any one of the second moving unit  570  may be connected to the top body  512  and the first clamping body  522 , and the other of the second moving unit  570  may be connected to the top body  512  and the second clamping body  524 . 
     The second moving unit  570  may include a first body  572  coupled to the top body  522 , a second body  574  coupled to the clamping body  520  and moving along a moving rail  578 , and a third body  576  coupled to a fixed outer wall B. The second body  574  may move the clamping body  520  in a direction toward the chamber body  510  while moving in the first direction X. 
     The fluid supply unit  530  may supply a drying fluid to the treating space  511 . The drying fluid supplied by the fluid supply unit  530  may include a carbon dioxide CO 2 . The fluid supply unit  530  may include a fluid supply source  531 , a first supply line  533 , a first supply valve  535 , a second supply line  537 , and a second supply valve  539 . 
     The fluid supply source  531  may store and/or supply the drying fluid supplied to the treating space  511 . The fluid supply source  531  may supply the drying fluid to the first supply line  533  and/or the second supply line  537 . For example, a first supply valve  535  may be installed at the first supply line  533 . In addition, the first supply line  533  may be connected to the first supply channel  512   a  formed at the top body  512 . In addition, a second supply valve  539  may be installed at the second supply line  537 . In addition, the second supply line  537  may be connected to the second supply channel  514   a  formed at the bottom body  514 . The first supply valve  535  and the second supply valve  539  may be on/off valves. Depending on the on/off of the first supply valve  535  and the second supply valve  539 , the drying fluid may selectively flow in the first supply line  533  or the second supply line  537 . 
     In the above-described example, the first supply line  533  and the second supply line  537  are connected to one fluid supply source  531 , but are not limited thereto. For example, a plurality of fluid supply sources  531  may be provided, the first supply line  533  may be connected to any one of a plurality of fluid supply sources  531 , and the second supply line  537  may be connected to the other of the fluid supply sources  531 . 
     In addition, the first supply line  533  may be a top supply line that supplies a drying gas from above the treating space  511 . For example, the first supply line  533  may supply the drying gas to the treating space  511  in a direction from a top to a bottom. In addition, the second supply line  537  may be a bottom supply line that supplies the drying gas from below the treating space  511 . For example, the second supply line  537  may supply drying gas to the treating space  511  in a direction from the bottom to the top. 
     The fluid exhaust line  540  may exhaust the drying fluid from the treating space  511 . The fluid exhaust line  540  may be connected to a depressurizing member (not shown) that provides a depressurization to the treating space. In addition, the fluid exhaust line  540  may be connected to an exhaust channel  514   b  formed at the bottom body  514 . The depressurizing member may be a pump. However, the inventive concept is not limited thereto, and the depressurizing member may be variously modified into a known device capable of providing a depressurization to the treating space. 
       FIG.  6    is a perspective view to explain the support member and guide member of  FIG.  3   ,  FIG.  7    is a perspective view showing the guide member installed in the bottom body,  FIG.  8    is a top view of the support member and guide member of  FIG.  7   , and  FIG.  9    is an enlarged view of the support member and guide member of the top body and the bottom body are in a closed position. 
     Referring to  FIG.  6    to  FIG.  9   , the support member  550  may support the substrate W such that a treating surface of the substrate W faces upward in the treating space  511 . The support member  550  may support the first edge region A of the substrate W in the treating space  511 . The support member  550  may support a bottom surface of the first edge region of the substrate W. The support member  550  may be installed on the top body  512 . 
     In an embodiment, the support member  550  includes a fixing rod  552  and a holder  554 . 
     The support member  550  may be symmetrically disposed on both sides with respect to the substrate. The fixing rods  552  may be provided in a bar shape downwardly extending from the bottom surface of the top body  512 . A plurality of fixing rods  552  are provided. The holder  554  has an arc shape. The holder  554  extends in a direction perpendicular to the bottom end of the fixing rod  552 . The holder  554  extends in the inner direction of the fixing rod  552 . 
     The guide member  580  is provided to surround a periphery of the substrate supported by the support member  550 . For example, the guide member  580  may be provided to surround the second edge region B of the substrate. Here, the second edge region B may be a region excluding the first edge region A. The guide member  580  includes a pair of guide blocks  582 . The guide block  582  is supported by the bottom surface of the bottom body  514 , and may be provided in an arc shape positioned outside the second edge region B when seen from above. 
     A passage through which a treating fluid passes may be provided between the guide block  582  and the top surface of the bottom body  514 . That is, the guide block  582  may be provided to be spaced apart from the bottom body  514 . To this end, the guide block may include support protrusions  584  on the bottom surface. 
     As shown in  FIG.  8   , the holder  554  and the guide block  582  have one ring shape when viewed from above. 
       FIG.  10    is a partial cross-sectional perspective view showing a modified embodiment of the guide member, and  FIG.  11    is a main part enlarged view showing the guide member in a state in which the top body and the bottom body are positioned at a closed position. 
     Referring to  FIG.  10    and  FIG.  11   , the guide member  580   a  includes a guide block  582  and a support protrusion  584 , and they are provided in a configuration and function generally similar to that of the guide block  582  and the support protrusion  584  shown in  FIG.  6   , and thus, a modified embodiment will be described focusing on a difference from the inventive concept. 
     In this modified example, the guide block  582  has through holes  586  through which the treating fluid passes. The through holes  586  may be provided at regular intervals. The through hole  586  is formed to penetrate from the top surface to the bottom surface of the guide block  582 . 
     As such, the guide block  582  may be provided to allow the treating fluid to move between the top space  511   a  and the bottom space  511   b  of the treating space. 
       FIG.  12    is a view illustrating another modified embodiment of the guide block. 
     As illustrated in  FIG.  12   , the through hole  586  provided in the guide block  582  may include a first inlet  586   a  horizontally formed toward the top space  511   a , a second inlet  586   b  horizontally formed to face the bottom space  51   b , and a connection path  586   c  connecting the first inlet  586   a  and the second inlet  586   b.    
       FIG.  13    is a view illustrating another embodiment of the inventive concept. 
     Referring to  FIG.  13   , the drying chamber  500   a  may further include a block driving unit  590 . The block driving unit  590  may slide the guide block  582  to adjust a distance between the guide block  582  and the edge of the substrate W. A movement of the guide block  582  may be completed before a process treatment. In addition, the guide block  582  may be moved by the block driving unit  590  during the process treatment. That is, in a substrate drying process, a gap between the substrate W and the guide block  582  may be narrowed or widened. 
     The effects of the inventive concept are not limited to the above-mentioned effects, and the unmentioned effects can be clearly understood by those skilled in the art to which the inventive concept pertains from the specification and the accompanying drawings. 
     Although the preferred embodiment of the inventive concept has been illustrated and described until now, the inventive concept is not limited to the above-described specific embodiment, and it is noted that an ordinary person in the art, to which the inventive concept pertains, may be variously carry out the inventive concept without departing from the essence of the inventive concept claimed in the claims and the modifications should not be construed separately from the technical spirit or prospect of the inventive concept.