WO2019003827A1 - 成膜装置、マスクフレーム、アライメント方法 - Google Patents
成膜装置、マスクフレーム、アライメント方法 Download PDFInfo
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- WO2019003827A1 WO2019003827A1 PCT/JP2018/021552 JP2018021552W WO2019003827A1 WO 2019003827 A1 WO2019003827 A1 WO 2019003827A1 JP 2018021552 W JP2018021552 W JP 2018021552W WO 2019003827 A1 WO2019003827 A1 WO 2019003827A1
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- Prior art keywords
- mask frame
- alignment
- mask
- chamber
- support
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 21
- 239000000758 substrate Substances 0.000 claims abstract description 49
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 31
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- 238000004544 sputter deposition Methods 0.000 description 35
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- 239000000428 dust Substances 0.000 description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 15
- 238000012546 transfer Methods 0.000 description 8
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- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
-
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/04—Coating on selected surface areas, e.g. using masks
- C23C14/042—Coating on selected surface areas, e.g. using masks using masks
-
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/04—Coating on selected surface areas, e.g. using masks
-
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
-
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/54—Controlling or regulating the coating process
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
Definitions
- the present invention relates to a film forming apparatus, a mask frame, and an alignment method, and more particularly to a suitable technique used for alignment of a mask frame in a film forming apparatus such as a vertical transfer sputtering apparatus.
- a film forming apparatus such as a vertical transfer sputtering apparatus.
- a film forming apparatus (sputtering apparatus) which performs heat treatment, film forming process and the like on a substrate made of glass or the like under vacuum environment.
- a cathode for sputtering is provided in a chamber, and an object to be processed (substrate) is disposed to face a target attached to the cathode at a predetermined distance in a reduced pressure chamber.
- Ar gas inert gas
- Ar gas or the like is introduced into the chamber, and a negative voltage is applied to the target in a state where the object to be treated is connected to ground to discharge the Ar ion ionized from Ar gas by the discharge. Collide with the target. And the film-forming process is performed by making the to-be-processed object the particle
- an adhesion preventing plate disposed around the substrate has been used in some cases, but a mask for finely controlling the film formation area in the substrate surface has not been used.
- the alignment between the substrate and the mask has been performed by aligning the substrate side with the substantially fixed mask (adhesion-preventing plate) (Patent Document 1).
- a drive system for mask alignment is provided to perform alignment as in the end effector.
- the positional accuracy between the adhesion preventing plate and the substrate is about 0.1 mm to several mm.
- the positional accuracy between the mask and the substrate used to regulate the film formation region on the substrate is approximately several ⁇ m to several tens of ⁇ m, which is an accuracy that workers can not directly perform alignment. Is required. For this reason, there has been a demand to automate the alignment between the mask and the substrate and make it possible to maintain the accuracy.
- the weight of the mask placed on the substrate is 500 kg to several tons.
- the weight increases and it becomes difficult for workers to handle it directly and perform replacement work.
- the mask alignment mechanism including the end effector is very complicated and heavy, which places a heavy burden on maintenance work. For this reason, there is a demand to automate such maintenance work.
- the mask in the case of aligning a heavy mask with the substrate, the mask can not be driven unless the output of a motor as a driving source is sufficient to drive the mask. For this reason, there is a possibility that dust may be generated from the drive source in order to obtain a sufficient output in the processing chamber (chamber) which is set to a vacuum atmosphere. However, if a motor that does not cause generation of dust or the like is adopted to solve this problem, the output of the motor becomes insufficient. For this reason, it is necessary to drive the mask by a mechanism connected from a high-power drive source disposed outside the chamber.
- the present invention has been made in view of the above circumstances, and aims to achieve the following objects. 1. It is possible to accurately align the mask frame, which has a large weight, with the substrate. 2. Reduce working time in alignment. 3. To prevent the enlargement of the drive system that moves the mask frame, which has a large weight. 4. To achieve both high precision alignment and reduction of dust generation in the chamber. 5. To achieve the above goals at low cost.
- the film forming apparatus comprises mask alignment means for aligning a mask frame held substantially perpendicularly to a substrate to be formed in a chamber, the mask alignment means being the mask frame of the mask frame Engaging portions provided at both ends of the lower surface and lower portions of both ends of the film forming position of the mask frame are provided so as to be able to support the mask frame and engaged with the engaging portions to enable alignment.
- an upper alignment portion capable of supporting and releasing the mask frame such that the upper position of the mask frame can be set in a direction perpendicular to the surface of the mask frame;
- the driving unit performing alignment in the vertical direction in the support alignment unit and the driving unit performing alignment in the direction orthogonal to the surface of the mask frame in the upper alignment unit It can be provided outside the chamber.
- the engaging portion is disposed at one end (first end) of the lower surface of the mask frame and engaged with the convex portion of the support alignment portion.
- a recess, and an engagement groove disposed at the other end (a second end opposite to the first end) of the lower surface of the mask frame and engaged with the projection of the support alignment portion;
- a groove may be provided along the lower end of the mask frame.
- the upper alignment portion is rotatable around an axis extending in a direction orthogonal to the mask surface, and the upper end of the mask frame is the mask surface. It has a clamping part which can be clamped in the direction which intersects perpendicularly, and the clamping part can be made movable along an axial direction.
- the mask frame according to the second aspect of the present invention is a mask frame of a mask which is substantially vertically held by the mask alignment means with respect to the substrate in the chamber of the film forming apparatus, wherein the mask alignment means In the apparatus, there is provided a support alignment portion provided below the both ends of the film deposition position of the mask frame and capable of supporting the mask frame, and an engagement portion engageable with the support alignment portion and capable of alignment
- a support alignment portion provided below the both ends of the film deposition position of the mask frame and capable of supporting the mask frame, and an engagement portion engageable with the support alignment portion and capable of alignment
- the engagement portion is disposed at one end of the lower surface of the mask frame and engaged with the convex portion of the support alignment portion, and the mask frame
- the engaging groove is disposed at the other end of the lower surface and engaged with the protrusion of the support alignment unit, and the engaging groove is provided along the lower end of the mask frame.
- An alignment method is an alignment method for aligning a mask frame held substantially perpendicular to a substrate to be film-formed in a chamber, the method comprising: The support alignment portion is engaged with engagement portions provided at both ends of the lower surface of the mask frame to support the mask frame, and the position of the upper side of the mask frame is perpendicular to the surface of the mask frame
- the mask frame is supported by the supportable and releasable upper alignment portion as settable, and the mask alignment means makes two directions parallel to the plane of the mask frame and an orthogonal direction orthogonal to the plane of the mask frame Three axial directions and three directions of rotation around the three axial axes At degrees of freedom, it has solved the above problems by performing alignment of the mask frame.
- the film forming apparatus comprises mask alignment means for aligning a mask frame held substantially perpendicularly to a substrate to be formed in a chamber, the mask alignment means being the mask frame of the mask frame Engaging portions provided at both ends of the lower surface and lower portions of both ends of the film forming position of the mask frame are provided so as to be able to support the mask frame and engaged with the engaging portions to enable alignment.
- an upper alignment portion capable of supporting and releasing the mask frame such that the upper position of the mask frame can be set in a direction perpendicular to the surface of the mask frame;
- the upper alignment portion causes the upper portion of the mask frame to reciprocate in the front-rear direction orthogonal to the mask frame surface.
- six free directions by three axial directions in two directions parallel to the surface of the mask frame and in an orthogonal direction orthogonal to the surface of the mask frame, and by three rotation directions around the axial lines in the three axial directions
- the mask frame can be aligned in degrees.
- the film forming apparatus is an apparatus capable of forming a film on a film formation substrate by sputtering, evaporation, CVD or the like using a mask.
- a driving unit for performing alignment in the lateral direction parallel to the surface of the mask frame in the support alignment unit and in the direction orthogonal to the surface is provided in the chamber. .
- the distance from the drive unit to the mask frame whose position is controlled by the drive unit can be shortened as compared with the case where the drive unit is outside the chamber. This makes it possible to control the position of the mask frame with higher precision.
- the driving unit performing alignment in the vertical direction in the support alignment unit and the driving unit performing alignment in the direction orthogonal to the surface of the mask frame in the upper alignment unit It is provided outside the chamber. This makes it possible to support the mask frame having a weight that may be 500 kg or more, and to use a high-output drive unit without worrying about the space in the chamber when directly driving the mask frame. . Furthermore, although dust generated from the driving unit falls downward by gravity, the dust may be generated because the driving unit is positioned outside the chamber at the upper position of the mask frame that affects the film formation characteristics. It is possible to prevent the adverse effect on the film formation characteristics.
- the engagement portion is disposed at one end of the lower surface of the mask frame and engaged with the convex portion of the support alignment portion;
- An engagement groove portion is disposed at the other end of the lower surface of the frame and engaged with the convex portion of the support alignment portion, and the engagement groove portion is provided along the lower end of the mask frame.
- the engagement groove portion allows a certain degree of freedom, so that alignment can be performed according to the length dimension of the engagement groove portion even if the mask frame is slightly shifted with respect to the support alignment portion. It becomes. Further, by engaging the engagement recess and the engagement groove with the support alignment portion, it is possible to support the mask frame in a finely adjustable manner.
- the upper alignment portion is rotatable around an axis extending in a direction orthogonal to the mask surface, and an upper end of the mask frame is the mask surface.
- a clamping portion capable of clamping in a direction perpendicular to the axis, the clamping portion being movable along the axial direction.
- the mask frame according to the second aspect of the present invention is a mask frame of a mask which is substantially vertically held by the mask alignment means with respect to the substrate to be formed in the chamber of the film forming apparatus.
- the film forming apparatus has a support alignment portion provided below the both ends of the film deposition position of the mask frame and capable of supporting the mask frame, and engaged with the support alignment portion for alignment Joints are provided at both ends of the lower surface of the mask frame.
- the engagement portion is disposed at one end of the lower surface of the mask frame and engaged with the convex portion of the support alignment portion, and the mask frame And an engaging groove portion disposed at the other end of the lower surface and engaged with the convex portion of the support alignment portion, and the engaging groove portion is provided along the lower end of the mask frame.
- the engagement concave portion is engaged with the convex portion of the support alignment portion, and at the same time, the other end side (the opposite side to the first end)
- the rough position setting to the film formation position of the mask frame can be performed in one operation.
- the engagement groove portion allows a certain degree of freedom, so that alignment can be performed according to the length dimension of the engagement groove portion even if the mask frame is slightly shifted with respect to the support alignment portion. It becomes. Further, by engaging the engagement recess and the engagement groove with the support alignment portion, it is possible to support the mask frame in a finely adjustable manner.
- An alignment method is an alignment method for aligning a mask frame held substantially perpendicular to a substrate to be film-formed in a chamber, the method comprising: The support alignment portion is engaged with engagement portions provided at both ends of the lower surface of the mask frame to support the mask frame, and the upper position of the mask frame is in a direction perpendicular to the surface of the mask frame
- the mask frame is supported by a supportable and releasable upper alignment portion as settable, and the mask alignment means is arranged in two directions parallel to the surface of the mask frame and an orthogonal direction orthogonal to the surface of the mask frame. Three axial directions and three directions of rotation around the three axial axes In six degrees of freedom, the alignment of the mask frame.
- FIG. 1 is a schematic plan view showing a film forming apparatus (sputtering apparatus) in the present embodiment.
- FIG. 2 is a schematic side view showing a film forming chamber in the film forming apparatus (sputtering apparatus) in the present embodiment.
- FIG. 3 is a perspective view showing an alignment apparatus (mask alignment means) in the film forming apparatus (sputtering apparatus) in the present embodiment.
- reference numeral 1 denotes a sputtering apparatus (film forming apparatus).
- the sputtering apparatus 1 (film forming apparatus) according to the present embodiment is, for example, a glass when a TFT (Thin Film Transistor) is formed on a target substrate S (substrate) made of glass or the like in a manufacturing process of a liquid crystal display. It is an interback type or inline type vacuum processing apparatus which performs heat processing, film formation processing, etching processing and the like in a vacuum environment on a substrate S to be processed which is made of or resin.
- TFT Thin Film Transistor
- the sputtering apparatus 1 has, for example, a load / unload chamber 2 for carrying in / out a glass substrate (substrate to be treated) S made of substantially rectangular glass, and ZnO on the glass substrate S, for example.
- a transfer chamber 3 in which a film such as a transparent conductive film of In 2 O 3 or In 2 O 3 system is formed by sputtering, and a position between the film-forming chamber 4 and the load / unload chamber 2 (chamber)
- a transfer chamber 3 in which a film such as a transparent conductive film of In 2 O 3 or In 2 O 3 system is formed by sputtering, and a position between the film-forming chamber 4 and the load / unload
- a plurality of film forming chambers 4A may be provided to surround the periphery of the transfer chamber 3.
- a plurality of chambers 2, 2A, 4, 4A may be formed to surround the periphery of the transfer chamber 3.
- Such a chamber may be, for example, composed of two load / unload chambers (chambers) formed adjacent to each other and a plurality of processing chambers (chambers).
- one of the load and unload chambers 2 is a load chamber for loading the glass substrate S from the outside toward the sputtering device 1
- the other load and unload chamber 2A is the sputtering device 1
- the unloading chamber can also be used to unload the glass substrate S from the outside.
- the film forming chamber 4 and the film forming chamber 4A may be configured to perform different film forming processes.
- a partition valve may be formed between each of the chambers 2, 2A, 4 and 4A and the transfer chamber 3, and between the load / unload chamber 2 (chamber) and the outside. Inside the transfer chamber 3, a transfer device 3 a (transfer robot) may be disposed.
- a holding device 48 for holding the glass substrate S during film formation is provided inside the film formation chamber 4.
- the holding device 48 may include a heater for heating the glass substrate S.
- the backing plate 6 cathode electrode
- the sputtering of negative potential on the backing plate 6 are provided as a feeding device (feeding means) for feeding a film forming material erected at a position facing the heater in the film forming chamber 4.
- High vacuum evacuation device 9 such as a power supply 7 for applying a voltage, a gas introducing device 8 (gas introducing means) for introducing a gas into the film forming chamber 4, and a turbo molecular pump for vacuuming the inside of the film forming chamber 4 And (high vacuum evacuation means).
- a mask frame F for holding a mask and an alignment apparatus 10 for aligning the mask frame F with the substrate S are provided in the film forming chamber 4.
- a target is fixed to the backing plate 6 on the front side facing the glass substrate S substantially in parallel.
- FIG. 3 is a perspective view showing the alignment apparatus of the film forming apparatus (sputtering apparatus) in the present embodiment.
- FIG. 4 is a perspective view showing a mask frame in the present embodiment.
- the alignment apparatus 10 supports the mask frame F shown in FIG. 4 and has three axial directions in two directions parallel to the plane of the mask frame F and an orthogonal direction orthogonal to the plane of the mask frame F, and three axial directions Alignment of the mask frame F is enabled in six degrees of freedom with three rotational directions about an axis.
- the alignment apparatus 10 supports the support alignment units 11 and 12 that support the lower end positions of the mask frame F, and the upper position of the mask frame F on the surface of the mask frame F.
- the upper alignment portions 13 and 14 capable of supporting and releasing the mask frame F, and the upper support portions 16 and 16 can be set in a direction orthogonal to the above.
- the mask frame F has a configuration in which a mask for limiting a film formation region (not shown) is stretched inside a substantially rectangular frame body Fa.
- the mask is a thin metal body and is provided in a tensioned state with respect to the frame Fa.
- the film forming position is set to be substantially parallel to the YZ plane, and the engaging portion F1 is located at both ends of the lower end of the mask frame F, that is, at both ends in the Y direction on the lower side in the Z direction.
- the engaging part F2 is each provided.
- FIG. 5 is a perspective view showing a support alignment unit of the film forming apparatus (sputtering apparatus) in the present embodiment.
- FIG. 6 is a perspective view showing a support alignment portion of the film forming apparatus (sputtering apparatus) in the present embodiment.
- the support alignment unit 11 has a convex portion 11a, an X drive unit 11X, a Y drive unit 11Y, and a Z drive unit 11Z.
- the convex portion 11a engages with an engaging portion F1 provided on a mask frame F described later.
- the convex portion 11 a is provided to project upward at the top of the support alignment portion 11.
- the X driving unit 11X can be driven when adjusting the position of the convex portion 11a in a substantially horizontal direction (X direction) perpendicular to the mask surface.
- the Y drive portion 11Y can be driven when adjusting the position of the convex portion 11a in a substantially horizontal direction (Y direction) parallel to the mask surface.
- the Z drive unit 11Z can be driven when adjusting the position of the convex portion 11a in the vertical direction (Z direction).
- the convex part 11a is provided in the state urged
- the upper side of the convex portion 11a has a spherical or hemispherical shape, and the convex portion 11a is made of, for example, a metal, and can support the mask frame F having a weight.
- the X drive unit 11X is screwed with a motor 11Xa as a stepping motor, a rotation shaft 11Xb rotationally driven by the motor 11Xa and extending in the X direction, and a rotation shaft 11Xb It has X position regulation part 11Xc which can move relatively in the direction of an axis of axis of rotation 11Xb, and regulation part 11Xd which regulates movement of this X position regulation part 11Xc and motor 11Xa.
- the base 11b connected to the tip of the rotary shaft 11Xb in a state where the front end of the rotary shaft 11Xb can be turned by rotating the rotary shaft 11Xb by the motor 11Xa It is configured to move in the X direction with respect to 11Xc.
- the movement direction of the base 11b is restricted by the restriction part 11Xd.
- the lower end of the X position restricting portion 11Xc is connected and fixed to a substantially flat horizontal plate 11c.
- the weight of the base 11b is supported by the horizontal plate 11c, and the base 11b is movable relative to the horizontal plate 11c.
- the Y drive unit 11Y is screwed on a motor 11Ya as a stepping motor, a rotation shaft 11Yb rotationally driven by the motor 11Ya and extending in the Y direction, and a rotation shaft 11Yb It has Y position regulation part 11Yc which can move relatively in the direction of an axis of axis of rotation 11Yb, and regulation part 11Yd which regulates movement of this Y position regulation part 11Yc and motor 11Ya.
- the pedestal 11d connected to the tip of the rotary shaft 11Yb in a state in which the distal end of the rotary shaft 11Yb can be pivoted by pivoting the rotary shaft 11Yb by the motor 11Ya 11 Yc is configured to move in the Y direction.
- the movement direction of the pedestal 11d is restricted by the restriction part 11Yd.
- the upper end of the Y position restricting portion 11Yc is connected and fixed to a substantially flat horizontal plate 11c.
- the weight of the member disposed on the horizontal plate 11c is supported by the pedestal 11d, and the horizontal plate 11c is movable relative to the pedestal 11d.
- the Z drive unit 11Z is screwed to a rotation shaft 11Zb, which is rotationally driven by the motor 11Za and extends in the Z direction, and a rotation shaft 11Zb, as a stepping motor or a servomotor. It has a Z position restricting portion 11Zc which can be moved relative to each other in the axial direction of the rotary shaft 11Zb, and a restricting portion 11Zd which restricts the movement of the Z position restricting portion 11Zc and the motor 11Za.
- the pedestal 11d connected to the tip of the rotary shaft 11Zb in a state in which the distal end of the rotary shaft 11Zb can be pivoted by rotating the rotary shaft 11Zb by the motor 11Za 11 Zc is configured to move in the Z direction.
- the movement direction of the pedestal 11d is restricted by the restriction part 11Zd.
- the Z position control unit 11Zc is a bottom portion of the film forming chamber 4 (chamber).
- the support alignment unit 11 can adjust the position of the convex portion 11 a with the degrees of freedom in the X, Y, and Z directions, and is fixed to the bottom of the film forming chamber 4 (chamber).
- both the motor 11Xa and the motor 11Ya are disposed in the chamber 4 and positioned below the mask frame F which is a film formation region.
- neither the X drive unit 11X nor the Y drive unit 11Y has the function of driving while supporting the weight of the mask frame F, which is a heavy object, and performs only horizontal alignment. Since a small output motor may be employed, it can be disposed in the chamber 4.
- the drive controllability can be improved.
- the X driving unit 11X and the Y driving unit 11Y can be disposed at positions close to each other in the chamber 4 with respect to the mask frame F which is a driven object.
- X drive part 11X and Y drive part 11Y are masks with high accuracy compared with the case where drive is carried out at a distance from the outside of chamber 4. It becomes possible to set the position of the frame F.
- the Z drive unit 11Z needs to be a large-sized motor with high output in order to drive while supporting the weight of the mask frame F, which is a heavy load, and at the same time, it is disposed outside the chamber 4 There is no limit on space.
- the support alignment unit 12 has a convex portion 12a, an X drive unit 12X, a Y drive unit 12Y, and a Z drive unit 12Z.
- the convex portion 12a engages with an engaging portion F2 provided on a mask frame F described later.
- the convex portion 12 a is provided so as to project upward at the top of the support alignment portion 12.
- the X driving unit 12X can be driven when adjusting the position of the convex portion 12a in a substantially horizontal direction (X direction) perpendicular to the mask surface.
- the Y drive portion 12Y can be driven when adjusting the position of the convex portion 12a in a substantially horizontal direction (Y direction) parallel to the mask surface.
- the Z drive unit 12Z can be driven when adjusting the position of the convex portion 12a in the vertical direction (Z direction).
- the convex portion 12a has a configuration equivalent to that of the convex portion 11a, and is provided in a state of being biased upward with respect to the base portion 12b, as shown in FIG. 3 and FIG.
- the upper side of the convex portion 12a has a spherical or hemispherical shape, and the convex portion 12a is made of, for example, a metal, and can support the mask frame F having a weight.
- the X drive unit 12X is screwed with a motor 12Xa as a stepping motor, a rotation shaft 12Xb rotationally driven by the motor 12Xa and extending in the X direction, and a rotation shaft 12Xb. It has X position regulation part 12Xc which can move relatively in the direction of an axis of axis of rotation 12Xb, and regulation part 12Xd which regulates movement of this X position regulation part 12Xc and motor 12Xa.
- the base 12b connected to the tip of the rotary shaft 12Xb in a state in which the tip of the rotary shaft 12Xb can turn by rotating the rotary shaft 12Xb by the motor 12Xa It is configured to move in the X direction with respect to 12Xc.
- the movement direction of the base 12b is restricted by the restriction part 12Xd.
- the lower end of the X position restricting portion 12Xc is connected and fixed to a substantially flat horizontal plate 12c.
- the weight of the base 12b is supported by the horizontal plate 12c, and the base 12b is movable relative to the horizontal plate 12c.
- the Y drive unit 12Y is screwed with a motor 12Ya as a stepping motor, a rotation shaft 12Yb rotationally driven by the motor 12Ya and extending in the Y direction, and a rotation shaft 12Yb. It has Y position regulation part 12Yc which can move relatively in the direction of an axis of axis of rotation 12Yb, and regulation part 12Yd which regulates movement of this Y position regulation part 12Yc and motor 12Ya.
- the pedestal 12d connected to the tip of the rotary shaft 12Yb in a state where the tip of the rotary shaft 12Yb can be turned by pivoting the rotary shaft 12Yb by the motor 12Ya It is configured to move in the Y direction with respect to 12Yc.
- the movement direction of the pedestal 12d is restricted by the restriction part 12Yd.
- the upper end of the Y position restricting portion 12Yc is connected and fixed to a substantially flat horizontal plate 12c.
- the weight of the member disposed on the horizontal plate 12c is supported by the pedestal 12d on the pedestal 12d, and the horizontal plate 12c is movable relative to the pedestal 12d.
- the Z drive unit 12Z is screwed on a rotation shaft 12Zb, which is rotationally driven by the motor 12Za and extends in the Z direction, and a rotation shaft 12Zb, as a stepping motor or a servomotor. It has a Z position restricting portion 12Zc which can be moved relative to each other in the axial direction of the rotary shaft 12Zb, and a restricting portion 12Zd which restricts the movement of the Z position restricting portion 12Zc and the motor 12Za.
- the pedestal 12d connected to the tip of the rotation shaft 12Zb in a state in which the tip of the rotation shaft 12Zb can be rotated by rotating the rotation shaft 12Zb by the motor 12Za It is configured to move in the Z direction with respect to 12Zc.
- the movement direction of the pedestal 12d is restricted by the restriction part 12Zd.
- the Z position regulating unit 12Zc is a bottom of the film forming chamber 4 (chamber).
- the support alignment unit 12 can adjust the position of the convex portion 12 a with the degrees of freedom in the X, Y, and Z directions, and is fixed to the bottom of the film forming chamber 4 (chamber).
- both the motor 12Xa and the motor 12Ya are disposed in the chamber 4 and located below the mask frame F which is a film formation region.
- neither the X drive unit 12X nor the Y drive unit 12Y has the function of driving while supporting the weight of the mask frame F, which is a heavy object, and performs only horizontal alignment. Since a small output motor may be employed, it can be disposed in the chamber 4. For this reason, in the X drive unit 12X and Y drive unit 12Y, since both the motor 12Xa and the motor 12Ya are configured by stepping motors, the drive controllability can be improved.
- the X driving unit 12X and the Y driving unit 12Y can be disposed at a position close to each other in the chamber 4 with respect to the mask frame F which is a driven object.
- the X drive part 12X, Y drive part 12Y is a mask with high accuracy compared with the case where drives at a distance from the outside of chamber 4 It becomes possible to set the position of the frame F.
- the Z drive unit 12Z needs to be a large-sized motor with high output in order to drive while supporting the weight of the mask frame F, which is a heavy load, and at the same time, it is disposed outside the chamber 4 There is no limit on space.
- the support alignment unit 11 and the support alignment unit 12 have substantially the same configuration, and are disposed on the left and right ends of the film formation position of the mask frame F.
- FIG. 7 is a perspective view showing the upper alignment portion of the film forming apparatus (sputtering apparatus) in the present embodiment.
- FIG. 8 is a perspective view showing the upper alignment portion of the film forming apparatus (sputtering apparatus) in the present embodiment.
- the upper alignment unit 13 is provided with a holding unit 13A.
- the holding portion 13A can hold and lock a portion in the vicinity of a corner which is an end portion in the left-right direction (Y direction) at the upper end of the mask frame F.
- the upper alignment unit 13 drives the holding unit 13A in a substantially horizontal direction (X direction) perpendicular to the mask surface to adjust the position by driving the X driving unit 13X and the holding unit 13A substantially parallel to the mask surface.
- a rotation drive unit 13R that can rotate in the YZ plane.
- the sandwiching portion 13A includes sandwiching pieces 13Aa and 13Ab and a base 13Ac.
- the holding pieces 13Aa and 13Ab abut on the front surface and the back surface of the mask frame F at the end of the mask frame F, respectively.
- the base 13Ac maintains the sandwiching pieces 13Aa and 13Ab in parallel, and sets the distance between the sandwiching pieces 13Aa and 13Ab substantially equal to the thickness of the mask frame F.
- the base ends of the holding pieces 13Aa and 13Ab are fixed to the base 13Ac.
- the rotational axis is intersected with the sandwiching pieces 13Aa and 13Ab so as to be substantially orthogonal to the positions on the opposite side of the protrusions 13Ad and 13Ae in the extending direction of the sandwiching pieces 13Aa and 13Ab.
- the tip of 13 B is connected.
- Convex parts 13Ad and 13Ae are provided at the tips of the holding pieces 13Aa and 13Ab so as to be positioned on the inner side surfaces facing each other.
- the holding pieces 13Aa and 13Ab are masks so that the holding pieces 13Aa and 13Ab and the mask frame F do not shift in the X direction.
- the misalignment is absorbed to maintain the mask frame F between the sandwiching piece 13Aa and the sandwiching piece 13Ab. In order to be able to do so, they are biased towards each other.
- Each of the convex portions 13Ad and 13Ae has a spherical or hemispherical shape projecting in a direction close to each other, and is made of, for example, a metal, and can support the weight of the mask frame F.
- the rotation axis 13B extends in a substantially horizontal direction (X direction) perpendicular to the mask surface, and is rotatable around the axis of the rotation axis 13B. Further, the rotary shaft 13B can be advanced and retracted in the axial direction (X direction).
- the base 13Ac of the holding portion 13A is connected and fixed to the tip of the rotary shaft 13B so as to project in the radial direction.
- the motor 13Ra of the rotation drive unit 13R is connected to the base end of the rotation shaft 13B, and can be driven around the axis of the rotation shaft 13B.
- the motor 13Ra of the rotational drive unit 13R is fixed to a flat plate portion 13C extending in parallel with the mask surface.
- the rotation shaft 13B and the holding portion 13A can be driven in the axial direction of the rotation shaft 13B by driving the X position control unit 13Xc with respect to the flat plate portion 13C by the X drive unit 13X.
- the X drive unit 13X is screwed onto a motor 13Xa as a stepping motor, a rotation shaft 13Xb rotationally driven by the motor 13Xa and extending in the X direction, and a rotation shaft 13Xb. It has X position regulation part 13Xc which can move relatively in the direction of an axis of axis of rotation 13Xb, and regulation part 13Xd which regulates movement of this X position regulation part 13Xc and motor 13Xa in the direction of X.
- the X position regulation unit 13Xc connected to the base end side of the rotation shaft 13Xb moves in the X direction with respect to the flat plate portion 13C. Is configured.
- the moving direction of the X position restricting portion 13Xc is restricted by the restricting portion 13Xd.
- the flat plate portion 13C is a side portion of the film forming chamber 4 (chamber).
- the upper alignment unit 13 can adjust the position of the holding unit 13A with the freedom in the X direction, and is fixed to the side of the film forming chamber 4 (chamber).
- the rotation shaft 13B is driven around the axis by the motor 13Ra of the rotation drive unit 13R.
- the angular position around the axis of the rotation shaft 13B is set so that the sandwiching portion 13A does not interfere with the mask frame F, which is the film formation position.
- the rotation shaft 13Xb is rotated by the motor 13Xa of the X drive unit 13X to move the X position regulation unit 13Xc in the X direction.
- the rotary shaft 13B is driven in the axial direction to set the position of the holding portion 13A in the X direction so that the upper end of the mask frame F is positioned between the holding pieces 13Aa and 13Ab.
- the rotation shaft 13B is rotated about the axis by the motor 13Ra of the rotation drive unit 13R.
- the angular position around the axis of the rotation shaft 13B in the holding portion 13A is set so that the upper end of the mask frame F is located between the holding pieces 13Aa and 13Ab in the holding portion 13A.
- convex part 13Ad, 13Ae each contact
- the rotary shaft 13Xb is rotated by the motor 13Xa of the X drive unit 13X to move the X position regulating unit 13Xc in the X direction, thereby driving the rotary shaft 13B in the axial direction to move the upper end of the mask frame F It is possible to finely adjust the position in the X direction in.
- the motor 13Ra of the rotation drive unit 13R is disposed at the outside position of the film forming chamber 4 (chamber), and the motor 13Xa of the X driving unit 13X is outside the film forming chamber 4 (chamber). It is placed in position. Therefore, angular position adjustment around the axis of the rotary shaft 13B in the sandwiching portion 13A and axial position adjustment of the rotary shaft 13B in the sandwiching portion 13A are both performed from the outside of the film forming chamber 4 (chamber). Thereby, the dust generated in the chamber 4 can be prevented from diffusing.
- the upper alignment portions 13 and 14 are arranged in line in the Y direction which is the left and right direction. As shown in FIG. 3, the upper alignment portions 13 and 14 are provided so as to have a substantially symmetrical configuration with respect to the center line (Z direction, gravity direction) of the mask frame F. For this reason, the upper alignment unit 14 is described only with reference numerals below, and there is also a configuration in which it is hidden in the figure.
- the upper alignment unit 14 is provided with a holding unit 14A.
- the holding portion 14A can hold and lock a portion in the vicinity of a corner which is an end portion in the left-right direction (Y direction) at the upper end of the mask frame F.
- the upper alignment unit 14 drives the holding unit 14A in a substantially horizontal direction (X direction) perpendicular to the mask surface to adjust the position by driving the X driving unit 14X and the holding unit 14A substantially parallel to the mask surface.
- a rotational drive unit 14R that can rotate in the YZ plane.
- the sandwiching portion 14A includes sandwiching pieces 14Aa and 14Ab and a base 14Ac.
- the clamping pieces 14Aa and 14Ab abut the front and back surfaces of the mask frame F at the end of the mask frame F, respectively.
- the base portion 14Ac maintains the sandwiching pieces 14a and 14Ab in parallel, and sets the distance between the sandwiching pieces 14a and 14Ab substantially equal to the thickness of the mask frame F.
- the base ends of the sandwiching pieces 14a and 14Ab are fixed to the base 14Ac.
- the rotating shaft intersects with the sandwiching pieces 14Aa and 14Ab so as to be substantially orthogonal.
- the tip of 14B is connected.
- Convex parts 14Ad and 14Ae are provided at the tips of the sandwiching pieces 14Aa and 14Ab so as to be positioned on the inner side surfaces facing each other.
- the holding pieces 14Aa and 14Ab are masks so that the holding pieces 14Aa and 14Ab do not shift in the X direction.
- the misalignment is absorbed to maintain the mask frame F between the sandwiching piece 14Aa and the sandwiching piece 14Ab. In order to be able to do so, they are biased towards each other.
- Each of the convex portions 14Ad and 14Ae has a spherical or hemispherical shape projecting in a direction close to each other, and is made of, for example, a metal, and can support the weight of the mask frame F.
- the rotation axis 14B extends in a substantially horizontal direction (X direction) perpendicular to the mask surface, and is rotatable around the axis of the rotation axis 14B. Further, the rotation shaft 14B can be advanced and retracted in the axial direction (X direction).
- the base 14Ac of the holding portion 14A is connected and fixed to the tip of the rotation shaft 14B so as to project in the radial direction.
- the motor 14Ra of the rotation drive unit 14R is connected to the base end of the rotation shaft 14B, and can be driven around the axis of the rotation shaft 14B.
- the motor 14Ra of the rotational drive unit 14R is fixed to a flat plate portion 14C extending in parallel with the mask surface.
- the rotation shaft 14B and the holding portion 14A can be driven in the axial direction of the rotation shaft 14B by driving the X position control unit 14Xc with respect to the flat plate portion 14C by the X drive unit 14X.
- the X drive unit 14X is screwed with a motor 14Xa as a stepping motor, a rotary shaft 14Xb rotationally driven by the motor 14Xa and extending in the X direction, and a rotary shaft 14Xb. And a restricting portion 14Xd which restricts the movement between the X position restricting portion 14Xc and the motor 14Xa in the X direction.
- the X position regulation unit 14Xc to which the base end side of the rotation shaft 14Xb is connected moves in the X direction with respect to the flat plate portion 14C. Is configured.
- the moving direction of the X position restricting portion 14Xc is restricted by the restricting portion 14Xd.
- the flat plate portion 14C is a side portion of the film forming chamber 4 (chamber).
- the upper alignment unit 14 can adjust the position of the holding unit 14A with the freedom in the X direction, and is fixed to the side of the film forming chamber 4 (chamber).
- the rotation shaft 14B is driven around the axis by the motor 14Ra of the rotation drive unit 14R.
- the angular position around the axis of the rotation shaft 14B is set so that the sandwiching portion 14A does not interfere with the mask frame F, which is the film formation position.
- the rotary shaft 14Xb is rotated by the motor 14Xa of the X drive unit 14X to move the X position regulation unit 14Xc in the X direction.
- the rotary shaft 14B is driven in the axial direction to set the position of the holding portion 14A in the X direction so that the upper end of the mask frame F is positioned between the holding pieces 14Aa and 14Ab.
- the rotation shaft 14B is rotated about the axis by the motor 14Ra of the rotation drive unit 14R.
- the angular position around the axis of the rotary shaft 13B in the holding portion 13A is set so that the upper end of the mask frame F is positioned between the holding pieces 14Aa and 14Ab in the holding portion 14A.
- the rotary shaft 14Xb is rotated by the motor 14Xa of the X drive unit 14X to move the X position regulating unit 14Xc in the X direction, thereby driving the rotary shaft 14B in the axial direction to move the upper end of the mask frame F It is possible to finely adjust the position in the X direction in.
- the motor 14Ra of the rotation drive unit 14R is disposed at the outer position of the film forming chamber 4 (chamber), and the motor 14Xa of the X drive unit 14X is outside the film forming chamber 4 (chamber). It is placed in position. Therefore, angular position adjustment around the axis of the rotary shaft 14B in the sandwiching portion 14A and axial position adjustment of the rotary shaft 14B in the sandwiching portion 14A are both performed from the outside of the film forming chamber 4 (chamber). Thereby, the dust generated in the chamber 4 can be prevented from diffusing.
- FIG. 9 is a perspective view showing the engagement portion of the mask frame in the present embodiment.
- FIG. 10 is a perspective view showing the engaging portion of the mask frame in the present embodiment.
- FIG. 11 is a perspective view showing an engaged state of the support alignment portion in the film forming apparatus (sputtering apparatus) in the present embodiment and the engaging portion in the mask frame.
- FIG. 12 is a perspective view showing an engaged state of the support alignment portion in the film forming apparatus (sputtering apparatus) in the present embodiment and the engaging portion in the mask frame.
- the mask frame F is, as shown in FIGS. 3, 9, and 10, at both ends of the lower end of the substantially rectangular frame body Fa, that is, at both end positions in the Y direction on the lower side in the Z direction. Engaging portions F2 are provided respectively.
- the engaging portion F1 is provided on one end side of the mask frame F, and protrudes below the lower end of the frame Fa.
- An engagement recess F1a is provided on the bottom surface of the engagement portion F1.
- the engagement recess F1a has a substantially spherical surface shape, and is formed so that the projection 11a of the support alignment portion 11 can be engaged and position regulation can be performed in the XY direction. It is done.
- the shapes of the engagement concave portion F1a and the convex portion 11a are not limited to the above-described shapes as long as they can set the center position in the X and Y directions with each other, and other shapes may be used. It is possible. For example, a structure may be employed in which the concavo-convex shape in which the engagement concave portion F1a and the convex portion 11a are fitted to each other is set reverse to the embodiment described above. Specifically, a structure in which a convex member is provided on the mask frame F and a concave member is provided on the support alignment unit 11 may be employed. Also, as the shape of either the engagement concave portion F1a or the convex portion 11a, a shape formed in a conical shape instead of a spherical shape, or a shape such as a polygonal pyramid may be adopted.
- the engaging portion F2 is provided on one end side of the mask frame F, and protrudes below the lower end of the frame Fa.
- An engagement groove F2a is provided on the bottom surface of the engagement portion F2.
- the engagement groove F2a extends in the direction extending to the lower end of the frame Fa, that is, in the Y direction so as to have substantially the same shape. Furthermore, the engaging groove F2a has an arc-shaped surface shape in which the cross section in the XZ direction of the engaging groove F2a is substantially the same in the extending direction of the engaging groove F2a.
- the arc shape of the engagement groove F2a is formed so that the convex portion 12a of the support alignment portion 12 engages and has freedom in the Y direction so that the position of the convex portion 12a in the X direction can be set. There is.
- the convex portion 12a is engaged with the central position of the convex portion 12a in either the X direction or Y direction which is the radial direction of the convex portion 12a with respect to the central position of the engagement groove portion F2a. Even when contacting the mating groove F2a, the outer surface of the convex 12a moves in the X and Y directions along the inner surface of the engagement groove F2a as the convex 12a and the engagement groove F2a approach in the Z direction. .
- the position of the protrusion 12a in the Y direction with respect to the engagement groove F2a extending in the Y direction has a degree of freedom corresponding to the length of the engagement groove F2a in the Y direction and is set to the position in the Y direction Be done.
- the upper support portions 16 are provided between the upper alignment portion 13 and the upper alignment portion 14 in the Y direction at a central position on the upper side of the mask frame F, as shown in FIG.
- the upper support portions 16, 16 support the mask frame F by the support alignment portions 11, 12, and the mask frame F is prevented from falling immediately before the upper alignment portions 13, 14 support and align the mask frame F. Support the upper side of F.
- the upper side support parts 16 and 16 have the magnet part 16a and the Z drive part 16Z, as shown to FIG. 3, FIG.
- the magnet portion 16a is provided in a portion including the central portion of the upper end of the mask frame F, specifically, the entire length of the mask frame F excluding the positions of both left and right ends of the mask frame F.
- the magnet portion 16 a can support the weight of the mask frame F by attracting the upper frame support F 6 such as a magnet that constitutes the mask frame F.
- the Z drive unit 16Z can drive the magnet unit 16a in the Z direction.
- a plurality of magnet portions 16 a extending in the Y direction are arranged along the upper end of the mask frame F.
- the magnet part 16a may be further divided into many members.
- the Z drive unit 16Z is screwed to a rotation shaft 16Zb, which is rotationally driven by the motor 16Za and extends in the Z direction, and a rotation shaft 16Zb, as a stepping motor or a servomotor.
- the Z plate portion 16c which can be moved relative to each other in the axial direction of the rotary shaft 16Zb, the regulating portion 16Zd which regulates the movement of the Z plate portion 16c and the motor 16Za, and the Z plate portion 16c and the magnet portion 16a are connected And a Z position restricting portion 16Zc to which the lower end of the rotating shaft 16Zb is connected.
- the lower end (tip) of the rotary shaft 16Zb is connected to the Z position restricting unit 16Zc in a rotatable state.
- the rotation shaft 16Zb By rotating the rotation shaft 16Zb by the motor 16Za, the rotation shaft 16Zb is rotated so as not to move in the Z direction with respect to the Z position restricting portion 16Zc.
- the moving direction of the Z plate portion 16c is restricted by the restricting portion 16Zd.
- the Z plate portion 16c is configured to move in the Z direction with respect to the Z position restricting portion 16Zc.
- the Z position control unit 16Zc is the top of the film forming chamber 4 (chamber).
- the Z drive unit 16Z can extend or retract the magnet unit 16a in the Z direction, and is fixed to the top of the film forming chamber 4 (chamber).
- the motor 16 Za is disposed outside the Z position restricting portion 16 Zc located at the top of the film forming chamber 4 (chamber), that is, outside the chamber 4.
- FIG. 13 is a front view showing a state before alignment in the film forming apparatus (sputtering apparatus), the mask frame, and the alignment method in the present embodiment.
- FIG. 14 is a front view showing an alignment state in the film forming apparatus (sputtering apparatus), the mask frame, and the alignment method in the present embodiment.
- the sputtering apparatus 1 when performing alignment of the mask frame F, first, as shown in FIG. 13, the mask frame F is positioned near the film formation position.
- the upper end of the mask frame F is supported so as not to fall down due to the upper support portion 16 and the upper frame support F6 (magnet portion) of the mask frame F attracting each other.
- the lower portion of the mask frame F is preferably supported by a supporting device (supporting means) other than the support alignment portions 11 and 12.
- the supporting device is set at a position higher than the positions of the convex portions 11a and 12a of the support alignment portions 11 and 12, and the convex portion 11a which rises with the alignment operation of the support alignment portions 11 and 12 described later. It can be set to be lower than the upper stop point of 12a.
- the upper support portions 16 and 16 are set at the lowermost position so that the magnet portion 16 a approaches the upper end of the mask frame F in the Z drive portion 16 Z.
- the support alignment units 11 and 12 are set in the Z drive units 11Z and 12Z so that the positions of the convex portions 11a and 12a become the lowest position in the Z direction as shown in FIG. ing.
- the convex portions 11a and 12a may be positioned close to the film forming position in the in-plane direction of the XY plane. This means that the convex portion 11a can abut on any position of the inner surface of the engagement concave portion F1a with the elevation of the convex portion 11a, and the inner surface of the engagement groove portion F2a with the elevation of the convex portion 12a. It means that the convex part 12a can be abutted in any position of.
- the upper alignment unit 13 forms the mask frame F at the deposition position where the angle of the sandwiching portion 13A around the axis of the rotation shaft 13B in the rotational drive unit 13R.
- the position of the holding portion 13A be set such that the holding portion 13A is positioned near the mask frame F and the holding portion 13A is inclined at least upward around the axis of the rotation shaft 13B. .
- the upper end of the mask frame F is set so as to be located between the holding pieces 13Aa and 13Ab in the holding unit 13A in the X drive unit 13X.
- the upper alignment unit 14 forms a film of the mask frame F with the angle of the sandwiching portion 14A around the axis of the rotation shaft 14B in the rotation drive unit 14R.
- the angle does not interfere with the mask frame F.
- the position of the sandwiching portion 13A be set such that the sandwiching portion 14A is located near the mask frame F and the sandwiching portion 14A is inclined at least upward around the axis of the rotation shaft 14B. .
- the upper end of the mask frame F is set to be positioned between the sandwiching pieces 14Aa and 14Ab in the sandwiching part 14A in the X drive unit 14X.
- the rotation drive unit 13R of the upper alignment unit 13 is driven to hold the holding unit 13A around the axis of the rotation shaft 13B as shown by arrow r13 in FIG. To rotate.
- the angle of the holding portion 13A is supported by bringing the convex portion 13Ad and the convex portion 13Ae provided on the two opposing surfaces located between the holding piece 13Aa and the holding piece 13Ab into contact with the front and back surfaces of the mask frame F Let it be a possible angle.
- the rotation drive unit 14R of the upper alignment unit 14 is driven to hold the holding unit 14A around the axis of the rotation shaft 14B as shown by arrow r14 in FIG. To rotate.
- the angle of the sandwiching portion 14A is supported by bringing the convex portion 14Ad and the convex portion 14Ae provided on the two opposing surfaces located between the sandwiching piece 14Aa and the sandwiching piece 14Ab into contact with the front and back surfaces of the mask frame F Let it be a possible angle.
- the Z drive units 11Z and 12Z in the support alignment units 11 and 12 respectively.
- the raised portions 11a and 12a are raised to bring the raised portion 11a into contact with the inner surface of the engaging recessed portion F1a, and the raised portion 12a is provided on the inner surface of the engaging groove F2a. Abut on.
- the weight of the mask frame F is supported by the support alignment units 11 and 12 by the operations of the Z drive units 11Z and 12Z indicated by arrows r11 and r12 in FIG.
- the Z driving units 16Z in the upper support units 16 and 16 are driven.
- the magnet unit 16a is lifted, and the magnet unit 16a is operated so as not to abut on the rising mask frame F.
- the convex portion 11a abuts on the inner surface of the engagement recess F1a
- the convex portion 12a abuts on the inner surface of the engagement groove F2a.
- the lower end of the mask frame F is restricted to the position in the XY plane set by the convex portions 11a and 12a.
- the convex portion 13Ad of the holding piece 13Aa and the convex portion 13Ae of the holding piece 13Ab respectively abut the front and back surfaces of the mask frame F.
- the holding piece 14Aa convex portion 14Ad and the convex portion 14Ae of the holding piece 14Ab abut on the front and back surfaces of the mask frame F, respectively.
- the upper end of the mask frame F is restricted to the position in the X direction set by the holding portions 13A and 14A.
- the alignment apparatus 10 based on the alignment signal that is calculated and output by an arithmetic device such as a control unit (not shown) from information on the positional relationship between the glass substrate S detected by a detection device such as a camera (not shown) and the mask frame F. , Operate the alignment apparatus 10. As a result, the positional relationship between the glass substrate S and the mask frame F is controlled to be at a predetermined film formation position for sputtering.
- an arithmetic device such as a control unit (not shown) from information on the positional relationship between the glass substrate S detected by a detection device such as a camera (not shown) and the mask frame F.
- the X drive units 11X and 12X, the Y drive units 11Y and 12Y, and the Z drive units 11Z and 12Z are driven. Furthermore, the X drive unit 13X in the upper alignment units 13 and 14 is driven. Thereby, the positions in two directions in the ZY plane of the mask frame F and the positions in the X direction orthogonal to the ZY plane of the mask frame F, that is, the positions in three axial directions and three around the three axial directions. Alignment of the mask frame F is performed in six degrees of freedom with one rotation direction (angle).
- position setting in three directions in the X, Y, and Z directions of the side end of the engagement portion F1 at the lower end of the mask frame F by the support alignment portion 11 and engagement at the lower end of the mask frame F by the support alignment portion 12 Position setting of the side end of the portion F2 in three directions in the XYZ directions, position setting of the side end of the engaging portion F1 at the upper end of the mask frame F by the upper alignment portion 13 and mask by the upper alignment portion 14
- frame F is performed.
- the X driving units 11X and 12X and the Y driving units 11Y and 12Y are provided in the chamber 4.
- the drive units 11X, 12X, 11Y, and 12Y are provided outside the chamber 4, from the drive units 11X, 12X, 11Y, and 12Y to the mask frame F whose position is controlled by the drive units.
- Distance can be shortened. This makes it possible to control the position of the mask frame F with higher precision.
- the drive units 11X, 12X, 11Y, and 12Y can be sealed in the chamber 4 using a space-saving type stepping motor. For this reason, it is possible to prevent the generation of dust and the like with respect to the driving of the driving units 11X, 12X, 11Y, and 12Y. As a result, it is possible to improve the film formation characteristics of sputtering on the glass substrate S, to improve the yield, and to reduce the manufacturing cost.
- the Z drive units 11 Z and 12 Z in the support alignment units 11 and 12, and the rotary drive units 13 R and 14 R and the X drive units 13 X and 14 X in the upper alignment units 13 and 14 are provided outside the chamber 4.
- Be thereby, it is possible to support the mask frame F having a weight which may be 500 kg or more, and to use a high output motor without worrying about the space in the chamber 4 when directly driving the mask frame F It becomes.
- dust generated from the drive units 11Z and 12Z falls downward by gravity, but the rotation drive units 13R and 14R and the X drive unit 13X, which are disposed at the upper position of the mask frame F that affects film formation characteristics. Since 14X is located outside the chamber 4, this dust will not be generated, and adverse effects on the sputtering film forming characteristics for the glass substrate S can be prevented.
- the mask frame F is supported by the convex portions 11a and 12a by the engagement portions F1 and F2 and the convex portions 11a and 12a of the support alignment portions 11 and 12 having the above-described configuration. It is possible to set the position of the lower end portion of the mask frame F only by driving the Z drive units 11Z and 12Z in the support alignment units 11 and 12. Furthermore, the mask frame F can be supported finely adjustable only by engaging the engagement recess F1a and the engagement groove F2a with the projections 11a and 12a of the support alignment portions 11 and 12, respectively.
- the driving units 13X and 14X move the holding units 13A and 14A along the rotation axes 13B and 14B, thereby moving in the X direction.
- Position control can be performed, which makes it possible to align the mask frame F with six degrees of freedom around three axes.
- the X drive units 11X, 12X, and Y drive units 11Y, 12Y, and Z drive are possible.
- the units 11Z and 12Z are not limited to this configuration.
- the X driving units 13X and 14X and the rotation driving units 13R and 14R are capable of driving if the holding units 13A and 14A of the upper alignment units 13 and 14 can be driven as described above. It is not limited to the configuration.
- the upper support 16 is not limited to this configuration as long as the upper side of the mask frame F can be supported before alignment.
- the vertical transport and vertical film formation in which the substrate S and the mask frame F are in the upright position are described, but horizontal transport can also be used.
- Z position control unit 16Zd Regulating part F: Mask frame Fa: Frame body F1, F2: Engaging part F1a: Engaging concave part F2a: Engaging groove part F6: Upper frame support body S: Glass substrate (substrate to be treated)
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Abstract
Description
本願は、2017年6月30日に日本に出願された特願2017-129466号に基づき優先権を主張し、その内容をここに援用する。
そして、ターゲットから飛び出す粒子を被処理体に付着させることにより、成膜処理が行われる。
1.大重量となるマスクフレームを基板に対して精度よくアライメント可能とすること。
2.アライメントにおける作業時間の短縮を図ること。
3.大重量となるマスクフレームを動かす駆動系の巨大化を防止すること。
4.高精度のアライメントの実現と、チャンバ内でのゴミ発生の低減とを両立を図ること。
5.上記の目的を低コストで実現すること。
本発明の第1態様に係る成膜装置においては、前記支持アライメント部における前記マスクフレームの前記面に平行な横方向及び前記マスクフレームの前記面に直交する方向においてアライメントを行う駆動部が、前記チャンバ内に設けられることがより好ましい。
本発明の第1態様に係る成膜装置においては、前記支持アライメント部における上下方向においてアライメントを行う駆動部及び前記上部アライメント部における前記マスクフレームの前記面に直交する方向においてアライメントを行う駆動部が前記チャンバの外部に設けられることが可能である。
また、本発明の第1態様に係る成膜装置においては、前記係合部は、前記マスクフレームの下面における一端(第1端)に配置され前記支持アライメント部の凸部に係合する係合凹部と、前記マスクフレームの下面における他端(第1端とは反対側に位置する第2端)に配置され前記支持アライメント部の凸部に係合する係合溝部とを有し、前記係合溝部が、前記マスクフレームの下端に沿って設けられてもよい。
また、本発明の第1態様に係る成膜装置においては、前記上部アライメント部は、マスク面に直交する方向に延在する軸線周りに回動可能とされ前記マスクフレームの上端を前記マスク面に直交する方向にて挟持可能な挟持部を有し、前記挟持部が、軸線方向に沿って移動可能とされることができる。
本発明の第2態様に係るマスクフレームは、成膜装置のチャンバ内でする基板に対してマスクアライメント手段によって略垂直保持されるマスクのマスクフレームであって、前記マスクアライメント手段は、前記成膜装置において前記マスクフレームの成膜位置における両端の下部に設けられて前記マスクフレームを支持可能とされる支持アライメント部を有し、前記支持アライメント部に係合してアライメント可能とされる係合部が、前記マスクフレームの下面における両端に設けられることにより上記課題を解決した。
また、本発明の第2態様に係るマスクフレームにおいては、前記係合部は、前記マスクフレームの下面における一端に配置され前記支持アライメント部の凸部に係合する係合凹部と、前記マスクフレームの下面における他端に配置され前記支持アライメント部の凸部に係合する係合溝部とを有し、前記係合溝部が、前記マスクフレームの下端に沿って設けられることが好ましい。
本発明の第3態様に係るアライメント方法は、チャンバ内で成膜する基板に対し、略垂直保持されたマスクフレームをアライメントするアライメント方法であって、前記マスクフレームの成膜位置における両端の下部に支持アライメント部を前記マスクフレームの下面における両端に設けられた係合部に係合することにより、前記マスクフレームを支持し、前記マスクフレームの上側の位置を、前記マスクフレームの面に直交する方向に設定可能として前記マスクフレームを支持及び解放可能な上部アライメント部によって支持し、マスクアライメント手段によって、前記マスクフレームの前記面に平行な2方向及び前記マスクフレームの前記面に直交する直交方向の3つの軸方向と、前記3つの軸方向の軸線周りの3つの回転方向とによる6自由度にて、前記マスクフレームのアライメントを行うことにより上記課題を解決した。
図1は、本実施形態における成膜装置(スパッタリング装置)を示す模式平面図である。図2は、本実施形態における成膜装置(スパッタリング装置)における成膜室を示す模式側面図である。図3は、本実施形態における成膜装置(スパッタリング装置)におけるアライメント装置(マスクアライメント手段)を示す斜視図である。図1において、符号1は、スパッタリング装置(成膜装置)である。
搬送室3の内部には、搬送装置3a(搬送ロボット)が配置されていてもよい。
更に、成膜室4には、マスクを保持するマスクフレームFと、マスクフレームFを基板Sに対してアライメントするアライメント装置10と、が設けられている。バッキングプレート6には、ガラス基板Sと略平行に対面する前面側にターゲットが固定される。
アライメント装置10は、図4に示すマスクフレームFを支持するとともに、マスクフレームFの面に平行な2方向及びマスクフレームFの面に直交する直交方向の3つの軸方向と、3つの軸方向の軸線周りの3つの回転方向とによる6自由度にて、マスクフレームFのアライメントを可能としている。
図3において、YZ面と略平行となるように成膜位置が設定されており、マスクフレームFの下端の両端部、つまり、Z方向における下側でY方向における両端位置に、係合部F1及び係合部F2がそれぞれ設けられている。
支持アライメント部11は、凸部11aと、X駆動部11Xと、Y駆動部11Yと、Z駆動部11Zとを有する。凸部11aは、後述するマスクフレームFに設けられた係合部F1に係合する。凸部11aは、支持アライメント部11の頂部にて上方に突出した状態に設けられている。X駆動部11Xは、凸部11aをマスク面に垂直な略水平方向(X方向)に位置調整する際に駆動可能である。Y駆動部11Yは、凸部11aをマスク面に平行な略水平方向(Y方向)に位置調整する際に駆動可能である。Z駆動部11Zは、凸部11aを鉛直方向(Z方向)に位置調整する際に駆動可能である。
このため、X駆動部12X,Y駆動部12Yにおいては、モータ12Xa,モータ12Yaがいずれもステッピングモータで構成されているため、駆動制御性を高めることができる。同時に、X駆動部12X,Y駆動部12Yは、被駆動物であるマスクフレームFに対して、チャンバ4内で、近接した位置に配置することができる。このため、シャフト、アームなどを備えた駆動機構を用いる場合、例えば、チャンバ4の外部から距離を隔てて駆動を行う場合に比べて、X駆動部12X,Y駆動部12Yは、高精度にマスクフレームFの位置の設定を行うことが可能となる。
上部アライメント部13には、挟持部13Aが設けられている。挟持部13Aは、マスクフレームFの上端における左右方向(Y方向)における端部である角部の付近の部位を挟持して係止可能である。上部アライメント部13は、挟持部13Aをマスク面に垂直な略水平方向(X方向)に駆動して位置調整する際に駆動可能なX駆動部13Xと、挟持部13Aをマスク面に略平行なYZ面内で回動可能な回転駆動部13Rと、を有する。
挟持片13Aa,13Abの先端には、互いに対向する内側面に位置するように凸部13Ad,13Aeが設けられている。
凸部13Ad,13Aeは、いずれも、互いに近接する方向に突出する球面あるいは半球面形状を有し、例えば、金属で構成され、マスクフレームFの重量を支持可能とされている。
回転軸13Bの先端には、挟持部13Aの基部13Acが径方向に突出するように接続固定される。回転軸13Bの基端には、回転駆動部13Rのモータ13Raが接続され、回転軸13Bの軸線周りに駆動可能とされている。
平板部13Cは、成膜室4(チャンバ)の側部である。上部アライメント部13は、挟持部13Aの位置をX方向の自由度にて調整可能であり、成膜室4(チャンバ)の側部に固定されている。
挟持片14Aa,14Abの先端には、互いに対向する内側面に位置するように凸部14Ad,14Aeが設けられている。
凸部14Ad,14Aeは、いずれも、互いに近接する方向に突出する球面あるいは半球面形状を有し、例えば、金属で構成され、マスクフレームFの重量を支持可能とされている。
回転軸14Bの先端には、挟持部14Aの基部14Acが径方向に突出するように接続固定される。回転軸14Bの基端には、回転駆動部14Rのモータ14Raが接続され、回転軸14Bの軸線周りに駆動可能とされている。
平板部14Cは、成膜室4(チャンバ)の側部である。上部アライメント部14は、挟持部14Aの位置をX方向の自由度にて調整可能であり、成膜室4(チャンバ)の側部に固定されている。
マスクフレームFは、図3,図9,図10に示すように、略矩形の枠体Faの下端の両端部、つまり、Z方向における下側でY方向における両端位置に、係合部F1及び係合部F2がそれぞれ設けられている。
例えば、係合凹部F1a及び凸部11aが互いに嵌合する凹凸形状が上述した実施形態とは逆に設定されている構造が採用されてもよい。具体的に、マスクフレームFに凸形状の部材が設けられ、支持アライメント部11に凹形状の部材が設けられている構造が採用されてもよい。また、係合凹部F1aと凸部11aとのいずれかの形状として、球面形状ではなく円錐状に形成された形状、または、多角錐などの形状を採用することもできる。
上側支持部16,16は、支持アライメント部11,12によってマスクフレームFを支持し、上部アライメント部13,14によってマスクフレームFを支持・アライメントする直前に、マスクフレームFが倒れないようにマスクフレームFの上側を支持する。
本実施形態に係るスパッタリング装置1において、マスクフレームFのアライメントを行う際には、まず、図13に示すように、マスクフレームFを成膜位置の付近に位置する。
さらに、係合凹部F1a及び係合溝部F2aを支持アライメント部11,12の凸部11a,12aに係合させることのみによって、マスクフレームFを微調整可能に支持することが可能となる。
2…ロード・アンロード室
3…搬送室
4…成膜室(チャンバ)
48…保持装置(保持手段)
6…バッキングプレート(カソード電極)
7…電源
8…ガス導入装置(ガス導入手段)
9…高真空排気装置(高真空排気手段)
10…アライメント装置(マスクアライメント手段)
11,12…支持アライメント部
11a,12a…凸部
11b,12b…基部
11c,12c…水平板
11d,12d…台座
11X,12X…X駆動部
11Xa,12Xa…モータ
11Xb,12Xb…回転軸
11Xc,12Xc…X位置規制部
11Xd,12Xd…規制部
11Y,12Y…Y駆動部
11Ya,12Ya…モータ
11Yb,12Yb…回転軸
11Yc,12Yc…Y位置規制部
11Yd,12Yd…規制部
11Z,12Z…Z駆動部
11Za,12Za…モータ
11Zb,12Zb…回転軸
11Zc,12Zc…Z位置規制部
11Zd,12Zd…規制部
13,14…上部アライメント部
13A,14A…挟持部
13Aa,13Ab,14Aa,14Ab…挟持片
13Ac,14Ac…基部
13Ad,13Ae,14Ad,14Ae…凸部
13B,14B…回転軸
13C,14C…平板部
13R,14R…回転駆動部
13Ra,14Ra…モータ
13X,14X…X駆動部
13Xa,14Xa…モータ
13Xb,14Xb…回転軸
13Xc,14Xc…X位置規制部
13Xd,14Xd…規制部
16…上側支持部
16a…マグネット部
16b…接続部
16c…Z板部
16Z…Z駆動部
16Za…モータ
16Zb…回転軸
16Zc…Z位置規制部
16Zd…規制部
F…マスクフレーム
Fa…枠体
F1,F2…係合部
F1a…係合凹部
F2a…係合溝部
F6…上側フレーム支持体
S…ガラス基板(被処理基板)
Claims (8)
- 成膜装置であって、
チャンバ内で成膜する基板に対し、略垂直保持されたマスクフレームをアライメントするマスクアライメント手段を有し、
前記マスクアライメント手段が、
前記マスクフレームの下面における両端に設けられた係合部と、
前記マスクフレームの成膜位置における両端の下部に設けられて前記マスクフレームを支持可能とされるとともに前記係合部に係合してアライメント可能とされる支持アライメント部と、
前記マスクフレームの上側の位置を、前記マスクフレームの面に直交する方向に設定可能として、前記マスクフレームを支持及び解放可能な上部アライメント部と、
を有し、
前記マスクアライメント手段によって、前記マスクフレームの前記面に平行な2方向及び前記マスクフレームの前記面に直交する直交方向の3つの軸方向と、前記3つの軸方向の軸線周りの3つの回転方向とによる6自由度にて、前記マスクフレームがアライメント可能とされる、
成膜装置。 - 前記支持アライメント部における前記マスクフレームの前記面に平行な横方向及び前記マスクフレームの前記面に直交する方向においてアライメントを行う駆動部が、前記チャンバ内に設けられる、
請求項1に記載の成膜装置。 - 前記支持アライメント部における上下方向においてアライメントを行う駆動部及び前記上部アライメント部における前記マスクフレームの前記面に直交する方向においてアライメントを行う駆動部が前記チャンバの外部に設けられる、
請求項1又は請求項2に記載の成膜装置。 - 前記係合部は、
前記マスクフレームの下面における一端に配置され前記支持アライメント部の凸部に係合する係合凹部と、
前記マスクフレームの下面における他端に配置され前記支持アライメント部の凸部に係合する係合溝部と、
を有し、
前記係合溝部が、前記マスクフレームの下端に沿って設けられる、
請求項1から請求項3のいずれか一項に記載の成膜装置。 - 前記上部アライメント部は、マスク面に直交する方向に延在する軸線周りに回動可能とされ前記マスクフレームの上端を前記マスク面に直交する方向にて挟持可能な挟持部を有し、
前記挟持部が、軸線方向に沿って移動可能とされる、
請求項1から請求項3のいずれか一項に記載の成膜装置。 - 成膜装置のチャンバ内で成膜する基板に対してマスクアライメント手段によって略垂直保持されるマスクのマスクフレームであって、
前記マスクアライメント手段は、前記成膜装置において前記マスクフレームの成膜位置における両端の下部に設けられて前記マスクフレームを支持可能とされる支持アライメント部を有し、
前記支持アライメント部に係合してアライメント可能とされる係合部が、前記マスクフレームの下面における両端に設けられる、
マスクフレーム。 - 前記係合部は、
前記マスクフレームの下面における一端に配置され前記支持アライメント部の凸部に係合する係合凹部と、
前記マスクフレームの下面における他端に配置され前記支持アライメント部の凸部に係合する係合溝部と、を有し、
前記係合溝部が、前記マスクフレームの下端に沿って設けられる、
請求項6に記載のマスクフレーム。 - チャンバ内で成膜する基板に対し、略垂直保持されたマスクフレームをアライメントするアライメント方法であって、
前記マスクフレームの成膜位置における両端の下部に支持アライメント部を前記マスクフレームの下面における両端に設けられた係合部に係合することにより、前記マスクフレームを支持し、
前記マスクフレームの上側の位置を、前記マスクフレームの面に直交する方向に設定可能として前記マスクフレームを支持及び解放可能な上部アライメント部によって支持し、
マスクアライメント手段によって、前記マスクフレームの前記面に平行な2方向及び前記マスクフレームの前記面に直交する直交方向の3つの軸方向と、前記3つの軸方向の軸線周りの3つの回転方向とによる6自由度にて、前記マスクフレームのアライメントを行う、
アライメント方法。
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JP2013227680A (ja) * | 2009-02-13 | 2013-11-07 | Hitachi High-Technologies Corp | 有機elデバイス製造装置及び成膜装置並びに有機elデバイス製造方法及び成膜方法 |
JP2011065868A (ja) * | 2009-09-17 | 2011-03-31 | Hitachi High-Technologies Corp | 有機elデバイス製造装置及び成膜装置並びに液晶表示基板製造装置 |
JP2012072478A (ja) * | 2010-09-30 | 2012-04-12 | Canon Tokki Corp | 成膜装置 |
JP2013237914A (ja) * | 2012-05-17 | 2013-11-28 | Hitachi High-Technologies Corp | 成膜装置及び成膜方法 |
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KR102153644B1 (ko) | 2020-09-09 |
KR20190013733A (ko) | 2019-02-11 |
JP6722298B2 (ja) | 2020-07-15 |
CN109429499A (zh) | 2019-03-05 |
JPWO2019003827A1 (ja) | 2019-06-27 |
TWI673375B (zh) | 2019-10-01 |
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