WO2005076343A1 - 半導体処理用の基板保持具及び処理装置 - Google Patents
半導体処理用の基板保持具及び処理装置 Download PDFInfo
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- WO2005076343A1 WO2005076343A1 PCT/JP2005/000845 JP2005000845W WO2005076343A1 WO 2005076343 A1 WO2005076343 A1 WO 2005076343A1 JP 2005000845 W JP2005000845 W JP 2005000845W WO 2005076343 A1 WO2005076343 A1 WO 2005076343A1
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- Prior art keywords
- substrate
- processed
- wafer
- mounting
- arm
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/673—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere using specially adapted carriers or holders; Fixing the workpieces on such carriers or holders
- H01L21/67303—Vertical boat type carrier whereby the substrates are horizontally supported, e.g. comprising rod-shaped elements
- H01L21/67309—Vertical boat type carrier whereby the substrates are horizontally supported, e.g. comprising rod-shaped elements characterized by the substrate support
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/458—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for supporting substrates in the reaction chamber
- C23C16/4582—Rigid and flat substrates, e.g. plates or discs
- C23C16/4583—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/54—Apparatus specially adapted for continuous coating
Definitions
- the present invention relates to a substrate holder and a processing apparatus for semiconductor processing, and more particularly to a technique for preventing a by-product film from being formed on a back surface of a substrate to be processed.
- semiconductor processing means that a semiconductor layer, an insulating layer, a conductive layer, and the like are formed on a substrate to be processed such as a semiconductor wafer or a glass substrate for an LCD (Liquid Crystal Display) or an FPD (Flat Panel Display).
- Forming by means means various processes performed for manufacturing a structure including a semiconductor device and wirings and electrodes connected to the semiconductor device on the substrate to be processed.
- a vertical heat processing apparatus for heat-treating a large number of wafers at once.
- a vertical heat treatment apparatus has an airtight vertical processing container for accommodating a wafer.
- a heating furnace is provided to surround the processing vessel.
- the wafers are held in a stacked state at an interval by a holder called a wafer boat.
- Wafer boats are roughly classified into ladder boats and ring boats.
- the ladder boat has a plurality of, for example, 36 columns arranged to surround the periphery of the wafer. A concave or convex locking portion for supporting the wafer is provided on these columns. Further, the ring boat has a ring-shaped support portion for supporting the peripheral portion of the wafer instead of the locking portion in the ladder boat.
- the ladder boat and the ring boat have a configuration in which only the peripheral portion of the wafer is supported, the back surface of the wafer comes into contact with the processing atmosphere. For this reason, when a film is formed on the front surface of the wafer using the processing gas, a film (herein referred to as a by-product film) is also formed on the back surface of the wafer. Since the by-product film formed on the back surface of the wafer is in an unstable state, for example, It is in a state of being easily peeled off by mechanical vibration, and this is a factor of generation of particles.
- a wafer is normally attracted to a mounting table by an electrostatic chuck.
- the electrostatic chuck may not function.
- a process of cleaning the back surface of the film-processed wafer is performed in order to solve a powerful problem.
- the cleaning process includes a process of applying a resist on the surface of the wafer, a process of cleaning the wafer with a cleaning liquid, and a process of removing the resist. For this reason, the cost of equipment increases, the throughput decreases, and the cost of device fabrication is affected.
- the wafer surface is To form a thick film.
- the by-product film often has a thickness of 1 / m or more on the back surface of the wafer, and as described above, the electrostatic chuck does not function.
- Patent Document 1 Paragraphs 0017, 0018, 0020, see FIG. 1 discloses a wafer boat configured so that a self-weight stress is not generated on a wafer. This is a configuration for preventing generation of crystal defects called slip when the wafer is subjected to high-temperature heat treatment.
- FIG. 9 is a schematic perspective view showing the relationship between the conventional wafer boat disclosed in this document and a transfer mechanism.
- support plates 11 that support the entire lower surface of the wafer W are arranged on the support 12 in multiple stages.
- the support plate 11 has an insertion hole 13 (support pin insertion hole).
- the support pins 15 provided on the first substrate support arm 14 project through the through holes 13.
- the wafer W is transferred from the second substrate support arm 16 to the support pins 15, and the support pins 15 are retracted, so that the wafer W is placed on the support plate 11.
- An object of the present invention is to prevent a by-product film from being formed on the back surface of a substrate to be processed and perform automatic transfer of the substrate to be processed when forming a film on the substrate to be processed. And a processing apparatus. Another object of the present invention is to provide a processing apparatus having a mounting table having a simple structure.
- a first viewpoint of the present invention is a substrate holder for holding a plurality of substrates to be processed at an interval in a vertical direction in a vertical processing container for semiconductor processing,
- the tool comprises a column extending vertically, and a plurality of mounting shelves arranged along the column so as to mount the substrate to be processed, respectively.
- Each of the storage shelves includes a first member fixed to the support, and a second member supported by the first member,
- the first and second members have first and second surfaces, respectively, and the first and second surfaces cooperate to form a mounting surface that covers the entire back surface of each substrate to be processed.
- the mounting surface has an outline larger than the outline of each substrate to be processed,
- the second member is vertically movable with respect to the first member so as to assist in carrying in and out each substrate to and from the mounting surface by the transfer mechanism;
- the second member is engaged with the back surface so as not to hinder the transfer mechanism from accessing the back surface of each substrate to be processed;
- a second aspect of the present invention is an apparatus for performing semiconductor processing on a substrate to be processed, the processing container accommodating the substrate to be processed,
- the mounting table described above is
- the first and second members have first and second surfaces, respectively, and the first and second surfaces cooperate to form a mounting surface that covers the entire back surface of the substrate to be processed.
- the mounting surface has an outline larger than the outline of the substrate to be processed;
- the second member is vertically movable with respect to the first member so as to assist in carrying in and out the substrate to and from the mounting surface by the transfer mechanism; Engaging with the back surface so as not to hinder the transfer mechanism from accessing the back surface of the substrate to be processed;
- the transport mechanism The transport mechanism,
- a drive arm for engaging the second portion of the mounting table from below and moving the second portion up and down;
- a first drive unit for moving the transfer arm forward and backward
- a second drive unit for moving the drive arm forward and backward
- a third drive unit for vertically moving the drive arm with respect to the transfer arm.
- FIG. 1 is a schematic perspective view showing a vertical heat treatment apparatus according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing a substrate holder used in the vertical heat treatment apparatus shown in FIG. 1.
- FIG. 3 is an enlarged cross-sectional view showing one of the mounting shelves (mounting tables) of the substrate holder shown in FIG. 2.
- FIG. 4 is a perspective view showing a transfer mechanism used in the vertical heat treatment apparatus shown in FIG. 1.
- FIG. 5A is an explanatory view showing a mode of wafer transfer.
- FIG. 5B is an explanatory view showing a mode of wafer transfer following FIG. 5A.
- FIG. 5C is an explanatory view showing a mode of wafer transfer following FIG. 5B.
- FIG. 5D is an explanatory view showing a mode of wafer transfer following FIG. 5C.
- FIG. 6A is an enlarged cross-sectional view showing one of the mounting shelves (mounting tables) according to another embodiment of the present invention.
- FIG. 6B is a plan view of the mounting shelf (mounting table) shown in FIG. 6A.
- FIG. 7 is a plan view showing one of the mounting shelves (mounting tables) according to still another embodiment of the present invention.
- FIG. 8 is a schematic sectional view showing a single-wafer processing apparatus according to still another embodiment of the present invention.
- FIG. 9 is a schematic perspective view showing a relationship between a conventional wafer boat and a transfer mechanism.
- FIG. 1 is a schematic perspective view showing a vertical heat treatment apparatus according to an embodiment of the present invention.
- FIG. 1 shows a wafer boat 20 made of, for example, quartz, that is, a substrate holder for heat treatment.
- the wafer boat 20 has a circular top plate 21 and a bottom plate 22 that are arranged to face each other up and down.
- a plurality of, for example, three columns 2325 are fixed between the top plate 21 and the bottom plate 22.
- the number of columns 23 25 is not limited to three, but may be two or four or more.
- the top plate 21 is not limited to a circular shape, and may be, for example, a ring shape.
- FIG. 2 is a cross-sectional view showing a substrate holder used in the vertical heat treatment apparatus shown in FIG.
- a large number of mounting shelves (mounting tables) 30 are arranged at predetermined intervals in the vertical direction.
- Each mounting shelf 30 is configured to horizontally mount a wafer W as a substrate to be processed, whereby the wafer boat 20 can hold a plurality of wafers W at intervals in the vertical direction. it can.
- the arrangement interval of the wafers W (the arrangement interval of the mounting shelves 30) is set to, for example, 3 Omm.
- the columns 23 to 25 are configured so that a wafer W can be transferred to each mounting shelf 30 of the wafer boat 20 by a transfer mechanism (see FIG. 4) described later. That is On one side of the wafer boat 20, the transfer port 40 for transfer is formed by increasing the distance between the columns 23 and 24.
- FIG. 3 is an enlarged sectional view showing one of the mounting shelves (mounting tables) of the substrate holder shown in FIG.
- Each of the mounting shelves 30 is composed of an outer stationary member (first member) 31 fixed to the column 23 25 and an inner movable member 32 (second member) supported by the stationary member 31.
- the upper surface (first surface) of the stationary member 31 and the upper surface (second surface) of the movable member 32 cooperate to form a mounting surface 30a that covers the entire back surface of each substrate to be processed.
- the mounting surface 30a has a contour larger than the contour of the wafer W.
- the movable member 32 can be moved up and down with respect to the stationary member 31 so as to assist in carrying the wafer W in and out of the mounting surface 30a by the first arm 61 of the transport mechanism 60 described later. For this reason, the movable member 32 engages with the back surface of the wafer W so as not to hinder the first arm 61 from accessing the back surface of the wafer W.
- the stationary member 31 is formed, for example, in a ring shape, and has three stages of ring surfaces so as to gradually decrease inward.
- the three stages of the ring surface are an upper stage surface 33, a middle stage surface 34, and a lower stage surface 35 in order from the surface at the highest position.
- the lower surface of the peripheral portion of the wafer W is mounted on the middle surface 34, and the outline of the middle surface 34 becomes the outline of the mounting surface 30a.
- the outer edge of the stationary member 31 is inserted into a groove formed in each of the columns 23 to 25 at intervals in the vertical direction, and is fixed by, for example, welding. It is to be noted that the stationary member 31 may not be welded to each of the columns 23 to 25, but may be merely inserted into the groove and supported detachably.
- the movable member 32 is disposed inside the stationary member 31 so as to be vertically movable.
- the movable member 32 has a structure in which, for example, the upper surface of a leg 37 having a cylindrical body is closed by a circular plate-shaped head 36 larger than the cylindrical body.
- the head 36 is mounted in a recess 34 a having the lower surface 35 of the stationary member 31 as a bottom surface. Since the lower surface 35 and the bottom surface of the head 36 are in surface contact, the space surrounded by the stationary member 31 is closed, so that the processing gas does not flow to the back surface of the wafer W.
- the upper surface of the head 36 is substantially the same as the middle surface 34 of the stationary member 31. Or lower than middle level 34. That is, the upper surface of the head 36 and the middle surface 34 cooperate to form the mounting surface 30a that covers the entire back surface of the wafer W.
- the head 36 is configured to be concentric with the stationary member 31. Accordingly, the middle surface 34 of the stationary member 31
- the (first surface) forms the outline of the mounting surface 30a over the entire circumference
- the upper surface (second surface) of the head 36 is disposed concentrically with the first surface within the outline of the mounting surface 30a. Is done.
- wafer boat 20 is shown as being placed in transfer area LA for transferring wafers.
- a vertical heating furnace including a cylindrical processing vessel 50 is provided above the transfer area LA.
- the lower end of the processing container 50 is opened, and a load port (not shown) for loading / unloading the wafer boat 20 is formed.
- the processing container 50 is covered with a cylindrical heat-insulating cover 55, and a heater 56 for heating the wafer is provided on the inner surface of the cover 55.
- a gas supply unit GS is connected to a lower portion of the processing container 50 via a supply pipe 51.
- a gas supply unit GS supplies a processing gas for CVD for depositing a thin film on a wafer.
- An exhaust part GE is connected to the lower part of the processing container 50 via an exhaust pipe 52.
- the processing unit 50 is evacuated and set to a predetermined pressure by the exhaust unit GE.
- the wafer boat 20 is detachably mounted on a heat retaining cylinder 41, and the heat retaining cylinder 41 is placed on a boat elevator 43 via a flange portion 42.
- the wafer boat 20 is moved up and down together with the heat retaining cylinder 41 and the flange portion 42, and is loaded / unloaded with respect to the processing container 50.
- the flange 42 functions as a lid for opening and closing the load port at the lower end of the processing container 50.
- FIG. 4 is a perspective view showing a transfer mechanism used in the vertical heat treatment apparatus shown in FIG.
- the transfer mechanism 60 is provided in the transfer area LA (see FIG. 1) for transferring the wafer W to and from the wafer boat 20.
- the transfer mechanism 60 is arranged between the wafer boat 20 and a force set (not shown) for transferring a wafer, and transfers the wafer W between them. It should be noted that a plurality of, for example, 25 wafers W can be stored at predetermined intervals in the wafer cassette.
- the transport mechanism 60 has a first arm 61 and a second arm 62.
- the first arm 61 is used for supporting and transferring the lower peripheral edge of the wafer W.
- the second arm 62 supports the lower surface of the movable member 32 when the wafer W is transferred, and is used to lift the movable member 32 to a predetermined height.
- the first arm 61 is formed in a fork shape so that the leg 37 of the movable member 32 can pass through the central space 61a. Thus, when the first arm 61 transfers the wafer W to the wafer boat 20, the movable member of the wafer boat 20 No longer interferes with 32.
- the first and second arms 61 and 62 are provided on an arm support 64 that is rotatable about a vertical axis with respect to the base 63 and that can move up and down.
- the arm support 64 includes driving units 65 and 66 for independently moving the first and second arms 61 and 62 in the same horizontal direction. Further, on the arm support 64, a driving unit 67 for moving the second arm 62 up and down with respect to the first arm 61 and the arm support 64 is provided.
- the wafer W is taken out of the wafer cassette (not shown) by the first arm 61 of the transfer mechanism 60 shown in FIG.
- the arm support 64 is rotated so that the first and second arms 61 and 62 face the wafer boat 20 arranged in the transfer area LA.
- the first arm 61 is advanced to position the wafer W above the mounting shelf 30.
- the second arm 62 is advanced to be positioned below the movable member 32.
- the second arm 62 is raised and lifted while supporting the lower side of the movable member 32. Thereby, the movable member 32 pushes up the wafer W on the first arm 61 through the space 61a of the first arm 61 and receives the wafer W.
- the first arm 61 is retracted from above the mounting shelf 30.
- the movable member 32 is lowered by the second arm 62, and the head 36 of the movable member 32 is supported on the lower step surface 35 of the stationary member 31.
- the wafer W is placed on the middle surface 34 of the stationary member 31 and the upper surface of the movable member 32.
- Such a transfer operation of the wafer W is sequentially performed from the upper stage to the lower stage of the wafer boat 20 by, for example, sequentially lowering the transfer mechanism 60 or raising the boat elevator 43.
- a predetermined number of wafers W are placed on the boat elevator 20 in order from the top.
- the boat elevator 43 is raised to carry the wafer boat 20 into the processing container 50.
- a predetermined film is deposited on the surface of the wafer W by setting the inside of the processing container 50 to a process temperature and supplying a processing gas into the processing container 50.
- the boat elevator 43 is lowered, and the wafer boat 20 is unloaded from the processing container 50.
- the wafer cassette is moved from the wafer boat 20 to the wafer cassette 20. The wafer w is sequentially transferred to
- the mounting shelf 30 of the wafer boat 20 is divided into a stationary member 31 and a movable member 32.
- the movable member 32 assists the transfer of the wafer W
- the stationary member 31 and the movable member 32 cooperate to form a mounting surface 30a that covers the entire back surface of each substrate to be processed.
- the head 36 of the movable member 32 moves through the central opening formed in the stationary member 31 (the space for the leg 37 of the movable member 32 to move up and down). It becomes a closed state.
- the lower surface 35 of the stationary member 31 and the bottom surface of the head 36 of the movable member 32 come into surface contact. Therefore, the flow of the processing gas to the back surface side of the wafer W is prevented by the movable member 32, and the formation of a by-product film on the back surface of the wafer W is prevented. Therefore, there is no problem in supporting the wafer W by the electrostatic chuck in a later process. Also, there is no concern about generation of particles based on the by-product film on the back side. Further, since the back surface cleaning step is not required, the throughput can be improved and the equipment cost can be reduced, and for example, the cost of the semiconductor device can be reduced.
- the wafer W can be transferred by moving the movable member 32 up and down, the wafer W can be automatically transferred. Further, the lower part of the movable member 32 projecting downward from the stationary member 31 is lifted in order to prevent the second arm 62 from entering the stationary member 31. For this reason, for example, if the evacuation operation is performed while the second arm 62 is moving up, there is no possibility that the mounting shelf 30 will be damaged even if a trouble occurs.
- the movable member 32 has a function of a mounting surface to support substantially the entire surface of the wafer W, it is possible to prevent the generation of the weight stress of the wafer W. Therefore, the wafer When W is heated to a high temperature, the occurrence of slip can be suppressed. Further, the wafer W is moved up and down while supporting the entire surface excluding the peripheral portion of the wafer W in a state of surface contact with the upper surface of the movable member 32, and the wafer W is transferred to and from the first arm 61. Therefore, as compared with the case where the wafer W is delivered and received by the support pins 15 described in Patent Document 1, the wafer W is supported and delivered more stably, and a reliable transfer operation can be performed.
- the mounting shelf 30 is divided into a stationary member 31 and a movable member 32, and the movable member 32 can be removed. For this reason, only the movable member 32 can be washed or replaced, so that maintenance is good.
- the wafer W is supported by the stationary member 31 and the movable member 32 when the wafer W is mounted.
- the wafer W can be supported only by the stationary member 31 when the wafer W is mounted.
- the upper surface of the movable member 32 may be lower than the middle surface 34 of the stationary member 31 when the movable member 32 is held by the stationary member 31.
- FIG. 6A is an enlarged cross-sectional view showing one of the mounting shelves (mounting tables) according to another embodiment of the present invention.
- FIG. 6B is a plan view of the mounting shelf (mounting table) shown in FIG. 6A.
- the stationary member 31 of the mounting shelf 30 shown in FIG. 3 is formed in a ring shape. Alternatively, the stationary member may be formed in a disk shape.
- the mounting shelf (mounting table) 70 shown in FIGS. 6A and 6B is composed of a disk-shaped stationary member (first member) 71 fixed to the columns 23-25 (see FIG. 1) and a stationary member. It comprises four inner movable members 74 (second members) supported by a member 71.
- the upper surface (first surface) of the stationary member 71 and the upper surface (second surface) of the movable member 74 cooperate to form a mounting surface 70a that covers the entire rear surface of each substrate to be processed.
- the mounting surface 70a has a contour larger than the contour of the wafer W.
- the movable member 74 can move up and down with respect to the stationary member 71 so as to assist in carrying the wafer W in and out of the mounting surface 70a by the first arm 61 of the transport mechanism 60 shown in FIG. is there. Therefore, the movable member 74 is engaged with the back surface of the wafer W so as not to prevent the first arm 61 from accessing the back surface of the wafer W.
- through-holes 72 are formed in stationary member 71 at four positions that are point-symmetric with respect to the center.
- a concave portion 73 having a larger diameter than the through hole 72 is formed.
- the leg portions (pin portions) 76 of the movable member 74 are fitted into the respective through holes 72.
- leg At the upper end of 76 a head 75 having a diameter somewhat smaller than the concave portion 73 of the stationary member 71 is provided.
- the movable member 74 is held by the stationary member 71 by locking the head 75 in the concave portion 73.
- a common plate 77 for moving the movable member 74 up and down by the second arm 62 is provided.
- the upper surface of the head 75 is substantially aligned with or lower than the upper surface of the stationary member 71.
- the upper surface of the head 75 and the upper surface of the stationary member 71 cooperate with each other to form the mounting surface 70a that covers the entire rear surface of the wafer W.
- the upper surface (first surface) of the stationary member 71 forms the contour of the mounting surface 70a over the entire circumference.
- the upper surface (second surface) of the movable member 74 is composed of a plurality of portions arranged at point-symmetric positions with respect to the center of the first surface within the outline of the mounting surface 70a.
- the operation of the mounting shelf 70 will be described.
- the first arm 61 (having a shape that does not interfere with the movable member 74 in a plane) holding the wafer W is positioned above the mounting shelf 70.
- the wafer W on the first arm 61 is pushed up by the four movable members 74 by lifting the common plate 77 by the second arm 62, and the wafer W is received by the movable member 74.
- the first arm 61 is retracted from the mounting shelf 70.
- the second arm 62 is lowered, and the wafer W is mounted on the mounting surface 70a.
- the bottom surface of the head 75 of the movable member 74 contacts the lower surface of the concave portion 73 to close the through hole 72. Therefore, the processing gas does not flow around the back surface of the wafer W, and the same effect as described above can be obtained.
- the movable members 32 and 74 are moved up and down with respect to the stationary members 31 and 71 by moving the second arm 62 up and down.
- the movable members 32, 74 can be moved up and down with respect to the stationary members 31, 71 by lowering the wafer boat 20 by the boat elevator 43.
- the second arm 62 is positioned below the movable members 32 and 74, and the wafer elevator 20 is lowered by the boat elevator 43.
- the first arm 61 supporting the wafer W is lowered, and the wafer W is transferred onto the movable members 32 and 74.
- the transport mechanism 60 may have any configuration as long as the height positions of the first arm 61 and the second arm 62 can be relatively changed.
- the transfer mechanism 60 includes the first and second arms 61 and 62. A plurality of sets may be provided, and a plurality of wafers may be transferred.
- FIG. 7 is a plan view showing one of the mounting shelves (mounting tables) according to still another embodiment of the present invention.
- the stationary members 31, 71 of the mounting shelves 30, 70 shown in FIGS. 3 and 6A form a contour of the mounting surface over the entire circumference.
- the stationary member and the movable member may cooperate to form the contour of the mounting surface.
- the mounting shelf (mounting table) 100 shown in FIG. 7 is fixed to the columns 23-25 and has a disk-shaped stationary member (the second one) having two slots along the wafer transfer direction. (A first member) 101 and two movable members 102 (second members) respectively mounted in slots of the stationary member 101.
- the upper surface (first surface) of stationary member 101 and the upper surface (second surface) of movable member 102 cooperate to form a mounting surface 100a that covers the entire back surface of each substrate to be processed.
- the mounting surface 100a has an outline larger than the outline of the wafer W.
- the movable member 102 can move up and down with respect to the stationary member 101 so as to assist in carrying the wafer W in and out of the mounting surface 100a by the first arm 61 of the transfer mechanism 60 shown in FIG. Therefore, the movable member 102 engages with the back surface of the wafer W so as not to prevent the first arm 61 from accessing the back surface of the wafer W. That is, the two movable members 102 are arranged at a wider interval than the fork of the first arm 61.
- FIG. 8 is a schematic sectional view showing a single wafer processing apparatus according to still another embodiment of the present invention.
- the processing apparatus shown in FIG. 1 has a vertical processing container that accommodates a plurality of substrates to be processed at a time.
- the configuration of the mounting table shown in FIG. 3, FIG. 6A, and FIG. 7 can be applied to a single-wafer processing apparatus having a processing container that stores substrates to be processed one by one.
- the single-wafer processing apparatus include an apparatus for performing a heat treatment such as a film forming process and an annealing process, an etching process, and a hydrophobic process before applying a resist.
- the apparatus shown in FIG. 8 is configured as a single-wafer CVD apparatus.
- This apparatus includes a processing container 80, and a mounting table 81 for mounting the wafer W inside the processing container 80 is provided.
- the mounting table 81 includes a stationary member (first member) 82 and an inner movable member 83 (second member) supported by the stationary member 82. Below the movable member 83, the stationary member 82 is formed with an opening 84 for the transfer arm to enter. The movable member 83 is moved up and down by the transfer arm, so that the same wafer transfer operation as described above can be performed.
- the middle surface 85 (first surface) of the stationary member 82 and the upper surface (second surface) of the movable member 83 cooperate to cover the entire back surface of each substrate to be processed.
- the mounting surface has a contour larger than the contour of wafer W.
- the movable member 83 is moved relative to the stationary member 82 so as to assist the transfer of the wafer W to and from the mounting surface by the transfer mechanism arm (corresponding to the first arm 61 of the transfer mechanism 60 shown in FIG. 4). Can be moved up and down. Therefore, the movable member 83 is engaged with the back surface of the wafer W so as not to prevent the arm from accessing the back surface of the wafer W.
- the movable member 83 is disposed inside the stationary member 82 so as to be vertically movable.
- the movable member 83 has a structure in which the movable member 83 is closed by, for example, a leg portion 83b formed of a cylindrical body and a circular plate-shaped head portion 83a that covers the upper surface thereof.
- the head 83a is mounted in a recess 85a formed in the middle surface 85 of the stationary member 82. Since the bottom surface of the concave portion 85a and the bottom surface of the head portion 83a are in surface contact with each other, the space surrounded by the stationary member 82 is closed, so that the processing gas does not enter the back surface of the wafer W.
- the upper surface of the head 83 a is substantially aligned with the middle surface 85 of the stationary member 82 or Is also located below. That is, the upper surface of the head 83a and the middle surface 85 cooperate to form a mounting surface that covers the entire back surface of the wafer W.
- the head 83a is configured to be concentric with the stationary member 82. Therefore, the middle surface 85 (first surface) of the stationary member 82 forms the contour of the mounting surface over the entire circumference, and the upper surface (second surface) of the head 83a is the first surface within the contour of the mounting surface. Are arranged concentrically with respect to.
- a shower head 87 for supplying a processing gas is provided on the ceiling of the processing container 80.
- the gas supply unit GS is connected to the shower head 87 via a supply pipe.
- a gas supply unit GS supplies a processing gas for CVD for depositing a thin film on a wafer.
- An exhaust part GE is connected to a lower part of the processing container 50 via an exhaust pipe. The evacuation unit GE evacuates the processing chamber 50 and sets it to a predetermined pressure.
- the characteristics of the mounting table shown in FIG. 3 are applied to a single-wafer processing apparatus. Accordingly, it is possible to prevent a by-product film from being formed on the back surface of the wafer W.
- the movable member 83 driven by the transfer arm the motor and cylinder of the lifting pin used in the conventional single-wafer type processing apparatus, the cylinder and the lever, and the lifting mechanism of the ivy can be eliminated.
- the wafer W can be automatically transferred to the wafer. Further, since the lifting mechanism is not used outside the processing container 80, the apparatus can be simplified and the total cost of the apparatus can be reduced.
- the present invention is also applicable to substrates to be processed other than semiconductor wafers, such as glass substrates for flat panels.
- the substrate holder and the processing apparatus of the present invention it is possible to prevent a by-product film from being formed on the back surface of a substrate to be processed when forming a film on the substrate to be processed, and to automatically form the substrate. Transfer of the processing substrate becomes possible.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-029611 | 2004-02-05 | ||
JP2004029611A JP2005223142A (ja) | 2004-02-05 | 2004-02-05 | 基板保持具、成膜処理装置及び処理装置 |
Publications (1)
Publication Number | Publication Date |
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WO2005076343A1 true WO2005076343A1 (ja) | 2005-08-18 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/000845 WO2005076343A1 (ja) | 2004-02-05 | 2005-01-24 | 半導体処理用の基板保持具及び処理装置 |
Country Status (3)
Country | Link |
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JP (1) | JP2005223142A (ja) |
TW (1) | TW200526496A (ja) |
WO (1) | WO2005076343A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108475635A (zh) * | 2015-12-21 | 2018-08-31 | 昭和电工株式会社 | 晶片支承机构、化学气相沉积装置和外延晶片的制造方法 |
EP4174920A1 (en) * | 2021-11-02 | 2023-05-03 | ASM IP Holding B.V. | A semiconductor substrate processing apparatus |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007073827A (ja) * | 2005-09-08 | 2007-03-22 | Dainippon Screen Mfg Co Ltd | 減圧乾燥装置 |
WO2008108605A1 (en) * | 2007-03-08 | 2008-09-12 | Sosul Co., Ltd. | Elevator and apparatus and method for processing substrate using the same |
JP2010126797A (ja) * | 2008-11-28 | 2010-06-10 | Tokyo Electron Ltd | 成膜装置、半導体製造装置、これらに用いられるサセプタ、プログラム、およびコンピュータ可読記憶媒体 |
JP2015002292A (ja) * | 2013-06-17 | 2015-01-05 | 東京エレクトロン株式会社 | 化合物半導体膜成膜用基板の移載装置および移載方法、ならびに化合物半導体膜の成膜システムおよび成膜方法 |
EP3422396B1 (de) | 2017-06-28 | 2021-08-04 | Meyer Burger (Germany) GmbH | Vorrichtung zum transport eines substrats, behandlungsvorrichtung mit einer an einen substratträger einer solchen vorrichtung angepassten aufnahmeplatte und verfahren zum prozessieren eines substrates unter nutzung einer solchen vorrichtung zum transport eines substrats sowie behandlungsanlage |
JP7257920B2 (ja) * | 2019-09-02 | 2023-04-14 | 大陽日酸株式会社 | 気相成長装置の基板搬送機構及び基板搬送方法 |
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JPH06318630A (ja) * | 1993-02-26 | 1994-11-15 | Applied Materials Inc | サセプタ駆動及びウエハ変位機構 |
JPH10242067A (ja) * | 1997-03-03 | 1998-09-11 | Tokyo Electron Ltd | 熱処理用基板支持具 |
JPH11163102A (ja) * | 1997-11-27 | 1999-06-18 | Kokusai Electric Co Ltd | 半導体製造装置用サセプタ |
JP2000174094A (ja) * | 1998-12-08 | 2000-06-23 | Hitachi Ltd | 半導体製造装置 |
-
2004
- 2004-02-05 JP JP2004029611A patent/JP2005223142A/ja active Pending
-
2005
- 2005-01-18 TW TW94101448A patent/TW200526496A/zh unknown
- 2005-01-24 WO PCT/JP2005/000845 patent/WO2005076343A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH06318630A (ja) * | 1993-02-26 | 1994-11-15 | Applied Materials Inc | サセプタ駆動及びウエハ変位機構 |
JPH10242067A (ja) * | 1997-03-03 | 1998-09-11 | Tokyo Electron Ltd | 熱処理用基板支持具 |
JPH11163102A (ja) * | 1997-11-27 | 1999-06-18 | Kokusai Electric Co Ltd | 半導体製造装置用サセプタ |
JP2000174094A (ja) * | 1998-12-08 | 2000-06-23 | Hitachi Ltd | 半導体製造装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108475635A (zh) * | 2015-12-21 | 2018-08-31 | 昭和电工株式会社 | 晶片支承机构、化学气相沉积装置和外延晶片的制造方法 |
US11427929B2 (en) | 2015-12-21 | 2022-08-30 | Showa Denko K.K. | Wafer supporting mechanism, chemical vapor deposition apparatus, and epitaxial wafer manufacturing method |
EP4174920A1 (en) * | 2021-11-02 | 2023-05-03 | ASM IP Holding B.V. | A semiconductor substrate processing apparatus |
Also Published As
Publication number | Publication date |
---|---|
TW200526496A (en) | 2005-08-16 |
JP2005223142A (ja) | 2005-08-18 |
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