WO2018199184A1 - 蒸発源及び成膜装置 - Google Patents
蒸発源及び成膜装置 Download PDFInfo
- Publication number
- WO2018199184A1 WO2018199184A1 PCT/JP2018/016861 JP2018016861W WO2018199184A1 WO 2018199184 A1 WO2018199184 A1 WO 2018199184A1 JP 2018016861 W JP2018016861 W JP 2018016861W WO 2018199184 A1 WO2018199184 A1 WO 2018199184A1
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- WO
- WIPO (PCT)
- Prior art keywords
- evaporation source
- nozzle
- opening
- nozzles
- top surface
- Prior art date
Links
- 238000001704 evaporation Methods 0.000 title claims abstract description 162
- 230000008020 evaporation Effects 0.000 title claims abstract description 162
- 230000008021 deposition Effects 0.000 title description 3
- 239000000463 material Substances 0.000 claims abstract description 57
- 239000010409 thin film Substances 0.000 claims abstract description 55
- 238000010438 heat treatment Methods 0.000 claims abstract description 45
- 239000010408 film Substances 0.000 claims description 74
- 230000015572 biosynthetic process Effects 0.000 claims description 54
- 239000000126 substance Substances 0.000 claims description 20
- 238000001816 cooling Methods 0.000 description 42
- 239000000758 substrate Substances 0.000 description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 33
- 239000011521 glass Substances 0.000 description 32
- 230000002829 reductive effect Effects 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 15
- 239000002184 metal Substances 0.000 description 15
- 230000036961 partial effect Effects 0.000 description 7
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- 238000006073 displacement reaction Methods 0.000 description 5
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- 239000004332 silver Substances 0.000 description 4
- 229910052582 BN Inorganic materials 0.000 description 3
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- 238000009529 body temperature measurement Methods 0.000 description 3
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- 239000011295 pitch Substances 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
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- 230000001154 acute effect Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
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- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
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- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
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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
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
-
- 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
- C23C14/24—Vacuum evaporation
-
- 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
- C23C14/56—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
- C23C14/564—Means for minimising impurities in the coating chamber such as dust, moisture, residual gases
-
- 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 an evaporation source that vaporizes a thin film material and releases a vaporized substance, and a film forming apparatus including the evaporation source.
- a vacuum is applied to heat and vaporize the thin film material and attach a vaporized substance (vapor) of the thin film material to a film formation target such as a glass substrate.
- a vapor deposition apparatus is used.
- a linear source in which a plurality of nozzles that discharge a vaporized substance of a thin film material are arranged in a row has been proposed as an evaporation source that can cope with an increase in the size of a film formation target (see, for example, Patent Document 1).
- Such an evaporation source is provided with a heat shielding member such as a reflector so that radiant heat generated to heat the thin film material is not radiated to the outside of the evaporation source.
- the linear source type evaporation source is configured by connecting a plurality of nozzles arranged in a row to an evaporation source container that accommodates a thin film material, and has an elongated rectangular parallelepiped shape.
- the film formation target is disposed opposite to the surface on which the nozzle of the linear evaporation source is disposed, and the vaporized material of the thin film material heated by a heating device such as a heater is discharged from the nozzle and adhered to the film formation target. Film formation is performed.
- the heat shielding member is disposed between the film formation target and the evaporation container, but no heat shielding member is disposed in the vicinity of the nozzle.
- the radiant heat from the heater or the evaporation source heated by the heater passes through the vicinity of the nozzle where the heat shielding member is not disposed and is radiated to the outside of the evaporation source, and is applied to the film formation target.
- the temperature of the film formation target increases.
- the vaporized material of the thin film material that has reached the film formation target does not move around the film formation target and does not adhere well. There's a problem.
- the metal mask expands due to radiant heat and a thin film having a desired pattern cannot be obtained.
- an object of the present invention is to provide an evaporation source capable of reducing the radiant heat radiated from the evaporation source and a film forming apparatus including the evaporation source.
- an evaporation source includes an evaporation source container, a heating device, a first heat shielding plate, and a second heat shielding plate.
- the evaporation source container includes a container body having a top surface and containing a thin film material, and an opening that is connected to the container body and protrudes from the top surface in a uniaxial direction to discharge a vaporized substance of the thin film material.
- the heating device heats the container body.
- the first heat shield plate is spaced apart from the top surface and is opposed to the first surface.
- the first opening region is larger than the opening of the nozzle through which the nozzle provided corresponding to each of the plurality of nozzles penetrates.
- the second heat shielding plate is fixed to each of the plurality of nozzles between the container main body and the first heat shielding plate, and is disposed opposite to the top surface so as to face the first opening region. And a second opening through which the nozzle passes.
- the second heat shield plate is configured to have an outer shape larger than the first opening region corresponding to the first opening of the first heat shield plate. Therefore, of the radiant heat generated by heating by the heating device, the radiant heat that could not be shielded by the first heat shield plate through the first opening can be reduced by the second heat shield plate. This reduces the radiant heat radiated from the evaporation source. Therefore, heating of the film formation target on which the thin film material is formed by radiant heat from the evaporation source is suppressed, and favorable film formation can be performed. In the case of forming a film through a metal mask, the expansion of the metal mask due to heating can be suppressed, and a high-definition pattern can be formed.
- the second heat shielding plate may be fixed to the nozzle by point contact. According to such a structure, since the contact area of a nozzle and a 2nd heat shielding board can be made small, the cooling of the nozzle by a 2nd heat shielding board can be suppressed. Thereby, cooling of the vaporization substance of the thin film material which passes through the inside of a nozzle is suppressed, and nozzle clogging can be prevented.
- the first opening may have a shape having a longitudinal direction in the uniaxial direction. According to such a configuration, even if the position of the nozzle connected to the container body shifts as the container body expands in the uniaxial direction due to the heating of the heating device, the first opening is always provided. It can comprise so that a nozzle may be located in a part.
- a third heat shield plate having a plurality of third openings having a larger third opening region may be further provided.
- the first heat shielding plate has an outer shape that surrounds the evaporation source container having a top surface portion having the first opening and a bottom surface portion facing the top surface portion, and the container body has the heating body
- the container main body may be supported by the bottom surface portion so as to be movable in the uniaxial direction in accordance with an extension amount of the container main body in the uniaxial direction due to thermal expansion of the container main body due to heating of the apparatus.
- the evaporation source container moves in the uniaxial direction by the movable support portion according to the expansion amount, so that the container main body is not distorted.
- the amount of vaporized substance released from the evaporation source can be made uniform in the surface.
- a thin film having a uniform in-plane thickness can be formed.
- a film formation apparatus includes a housing portion and an evaporation source.
- the storage unit can store a film formation target.
- the evaporation source includes a container body having a top surface and containing a thin film material, and is connected to the container body and protrudes from the top surface in a uniaxial direction, and the vaporized substance of the thin film material is disposed on the film formation target.
- An evaporation source container provided with a plurality of nozzles having openings that emit toward the surface, a heating device that heats the container body, and a face that is spaced apart from the top surface, and is provided corresponding to each of the plurality of nozzles.
- a first heat shielding plate having a plurality of first openings having a first opening area larger than the opening of the nozzle through which each of the nozzles penetrated, the container body, and the first heat shielding.
- a plurality of nozzles fixed between each of the plurality of nozzles and spaced apart from the top surface, and having a second opening having a larger outer shape than the first opening region and through which the nozzles pass.
- a second heat shielding plate having a plurality of first openings having a first opening area larger than the opening of the nozzle through which each of the nozzles penetrated, the container body, and the first heat shielding.
- FIG. 1 is a schematic cross-sectional view of a film forming apparatus according to a first embodiment of the present invention. It is a model top view of the evaporation source provided in the said film-forming apparatus. It is a partial expansion perspective view near the nozzle of the said evaporation source.
- FIG. 4 is a partially enlarged perspective view of the evaporation source shown in FIG. 3 in the vicinity of the nozzle as viewed from the bottom surface of the water-cooled plate toward the top surface. It is a partial top view which shows the mode before and behind the heating of the nozzle vicinity in the said evaporation source, and sectional drawing corresponding to it.
- the X-axis and Y-axis directions indicate horizontal directions orthogonal to each other, and the Z-axis direction indicates a height direction orthogonal to these.
- FIG. 1 is a schematic cross-sectional view of a film forming apparatus according to an embodiment of the present invention.
- the film forming apparatus 1 includes a vacuum chamber 2 as a housing unit, a linear source type evaporation source 3 disposed on the bottom side inside the vacuum chamber 2, and a substrate holder 8 as a holding unit that holds a film formation target.
- the vacuum chamber 2 accommodates a glass substrate 9 as a film formation target.
- the substrate holder 8 is disposed on the top surface side inside the vacuum chamber 2.
- the substrate holder 8 holds a surface (film formation target surface) 9a on which a glass substrate 9 as a film formation target is to be formed facing downward.
- the linear source type evaporation source 3 has a substantially rectangular parallelepiped outer shape having a longitudinal direction in the X-axis direction.
- the substrate holder 8 is configured to be movable in a direction (Y-axis direction) orthogonal to the longitudinal direction (X-axis direction) of the evaporation source 3.
- the evaporation source 3 contains a thin film material (evaporation material) 36, heats and vaporizes the thin film material 36, and releases a vaporized substance (vapor) of the thin film material 36. Details of the evaporation source 3 will be described later.
- the vacuum exhaust system 7 is connected to the vacuum chamber 2. The evacuation system 7 evacuates the inside of the vacuum chamber 2 to form a vacuum atmosphere suitable for film formation.
- the vaporized material of the thin film material 36 is released from the evaporation source 3 while moving the glass substrate 9 while being held by the substrate holder 8 while maintaining the vacuum atmosphere in the vacuum chamber 2, and A desired thin film is formed on the glass substrate 9 by attaching a vaporized substance on the film formation target surface 9a.
- the glass substrate 9 is movable.
- the position of the glass substrate 9 may be fixed and the evaporation source 3 may be movable in the Y-axis direction.
- the film may be formed in a state where the glass substrate 9 and the evaporation source 3 are fixed without moving the glass substrate 9 or the evaporation source 3.
- a glass substrate is described as an example of the film formation target, but the present invention is not limited to this, and a flexible film base material or the like may be used.
- the temperature measurement sensor 10 is connected to the controller 4 and measures the temperature of an evaporation source case 35 of the evaporation source 3 described later.
- the film thickness sensor 6 measures the amount of vapor (vaporized material) from the evaporation source 3 and controls the thickness (or film formation rate) of the thin film formed on the glass substrate 9.
- the film thickness sensor 6 is disposed so as not to prevent the vaporized substance of the thin film material released from the evaporation source 3 from reaching the glass substrate 9.
- the output of the film thickness sensor 6 is input to the controller 4.
- the controller 4 Based on the measurement results of the film thickness sensor 6 and the temperature measurement sensor 10, the controller 4 adjusts the amount of power supplied to a heater 34 as a heating device provided in the evaporation source 3 described later, and serves as an evaporation source container.
- the evaporation source case 35 is brought to a desired temperature and controlled so that the amount of vapor (vaporized material) released or the film formation rate becomes a desired value.
- FIG. 2 is a schematic top view of the evaporation source 3.
- FIG. 3 is a partially enlarged perspective view near the nozzle of the evaporation source 3.
- 4A is a perspective view of the vicinity of the nozzle of the evaporation source 3 in FIG. 3, and is a partially enlarged perspective view seen from the bottom surface 313 to the top surface 310 of the water cooling plate 31 described later.
- FIG. 4B is a perspective view further enlarging FIG. 4A.
- an evaporation source 3 that is a linear source type evaporation source includes an evaporation source case 35 as an evaporation source container, a heater 34 as a heating device, and a water-cooled plate 31 as a first heat shielding plate. And a follower reflector 33 as a second heat shielding plate, a reflector 32 as a third heat shielding plate, a fixed support portion 391, and a movable support portion 392.
- the heater 34 heats the evaporation source case 35.
- the thin film material 36 accommodated in the evaporation source case 35 is heated by the heater 34 and becomes a vaporized substance of the thin film material 36.
- the heater 34 is disposed between the evaporation source case 35 and the reflector 32 so as to surround the entire evaporation source case 35.
- the heater 34 is typically configured by a resistance heating wire, but may be configured by an induction heating coil.
- the evaporation source case 35 has a container body 351 and a plurality of nozzles 37.
- the container body 351 has a top surface 352 and accommodates the thin film material 36.
- the container main body 351 has a rectangular parallelepiped outer shape, and its top surface 352 is a surface parallel to the XY plane.
- the evaporation source case 35 and the substrate holder 8 are provided so that the top surface 352 and the film formation target surface 9a of the glass substrate 9 are spaced apart from each other in the Z-axis direction.
- the container body 351 is made of a material having high thermal conductivity such as metal or graphite.
- the plurality of nozzles 371 to 377 protrude from the top surface 352 of the container main body 351 and are connected to the container main body 351.
- the plurality of nozzles 371 to 377 are arranged in a line in one axis direction (X-axis direction in the drawing).
- a nozzle 371, a nozzle 372, a nozzle 373, a nozzle 374, a nozzle 375, a nozzle 376, and a nozzle 377 are arranged in order from left to right.
- the nozzles 371 to 377 are collectively referred to as a nozzle 37, and will be described using reference numerals 371 to 377 as necessary.
- the nozzle 37 has an opening (vaporization substance discharge port) 380 that discharges the vaporized substance of the thin film material 36.
- the vapor of the thin film material 36 generated in the container main body 351 is discharged from the opening 380 into the vacuum chamber 2 outside the evaporation source 3.
- the plurality of nozzles 371 to 377 are connected to a common container body 351.
- the nozzle 37 can be made of a material such as tantalum, molybdenum, or carbon.
- the container body 351 has an elongated rectangular parallelepiped shape having a longitudinal direction in the X-axis direction in which the nozzles 37 are arranged. Further, the nozzle 37 has a cylindrical shape having a substantially circular cross section perpendicular to the Z-axis direction, but the shape of the nozzle 37 is not limited to this.
- the water cooling plate (first heat shielding plate) 31 has a heat shielding function for performing water cooling.
- the water cooling plate 31 is provided with a water channel such as a water cooling pipe through which water flows.
- the water cooling plate 31 is provided to absorb and reduce the radiant heat radiated from the heater 34 and the evaporation source case 35 heated by the heater 34 to the glass substrate 9.
- the water-cooled plate 31 has a rectangular parallelepiped outer shape having a top surface portion 310, a bottom surface portion 313 and a side surface portion 314 facing the top surface portion 310, and the water-cooled plate 31 constitutes the outer shape of the evaporation source 3.
- the water cooling plate 31 is disposed so as to surround the evaporation source case 35, the heater 34, the reflector 32, and the follower reflector 33.
- the top surface portion 310 of the water cooling plate 31 is disposed substantially parallel to the XY plane, and is disposed opposite to the top surface 352 of the container body 351 of the evaporation source case 35.
- a plurality of first openings 3111 to 3117 are provided in the top surface portion 310 of the water-cooled plate (first heat shielding plate) 31.
- the first opening 3111 is in the nozzle 371, the first opening 3112 is in the nozzle 372, the first opening 3113 is in the nozzle 373, the first opening 3114 is in the nozzle 374, and the first opening 3115.
- the first opening 3116 is provided corresponding to the nozzle 376, and the first opening 3117 is provided corresponding to the nozzle 377.
- the first openings 3111 to 3117 are collectively referred to as a first opening 311 and will be described using the reference numerals 3111 to 3117 as necessary.
- 1st opening part 311 is provided for every nozzle 37 so that the corresponding nozzle 37 may penetrate.
- the first opening 311 has a first opening area larger than the opening 380 of the nozzle 37.
- the nozzle 37 When the nozzle 37 is cooled, the vaporized substance of the thin film material that passes through the nozzle 37 is cooled in the nozzle 37, which may cause the nozzle 37 to be clogged. For this reason, the 1st opening part 311 is provided so that the water cooling plate 31 and the nozzle 37 may not contact so that the nozzle 37 may not clog.
- the planar shape of the first opening 311 has a longitudinal direction in the X-axis direction, which is the direction in which the plurality of nozzles 37 are arranged.
- the first opening 311 is substantially oval or oval having a major axis along the X-axis direction and a minor axis along the Y-axis direction, but the shape is not limited to this. For example, it may be rectangular.
- the container body 351 is heated by the heater 34 during film formation.
- the position of the nozzle 37 connected to the container body 351 is deviated by several millimeters from the normal temperature along with the thermal expansion in the longitudinal direction (nozzle arrangement direction).
- the first opening 311 is formed in consideration of the positional deviation amount of the nozzle 37.
- the first opening 311 is in the longitudinal direction of the container body 351, which is the extension direction, so that the nozzle 37 is positioned in the first opening 311 even if the nozzle 37 is displaced due to thermal expansion. It has a shape having a longitudinal direction.
- the amount of displacement of the nozzle 37 due to thermal expansion increases from the central portion to the end portion along the longitudinal direction (X-axis direction) of the evaporation source case 35. To go.
- the position of the nozzle 374 located at the center of the evaporation source case 35 hardly changes even when the evaporation source case 35 expands and expands due to heating.
- the positions of the nozzles 371 to 373 and 375 to 377 change with the thermal expansion of the evaporation source case 35 due to heating.
- the nozzles 371 to 373 and 375 to 377 located closest to the both ends of the evaporation source case 35 have the largest change in position, and then the changes in the positions of the nozzles 372 and 376 are largest.
- the change in the position of the nozzles 373 and 375 is the smallest.
- the amount of displacement of the nozzle 37 due to heating during film formation varies depending on the position where the nozzle 37 is disposed.
- the plurality of first openings 311 are formed so that the nozzles 37 are positioned in the first openings 311 even if a positional deviation occurs due to thermal expansion, taking into account the difference in positional deviation due to the arrangement of the nozzles 37. Is done.
- FIG. 2 is a schematic top view of the evaporation source 3 at normal temperature.
- the nozzle 374 located at the center of the evaporation source case 35 is located at a substantially central portion of the corresponding first opening 3114.
- the nozzles 375 to 377 located on the right side in the drawing from the central portion of the evaporation source case 35 are located on the left side in the corresponding first openings 3115 to 3117.
- the nozzles 371 to 373 located on the left side in the drawing from the central portion of the evaporation source case 35 are located on the right side in the corresponding first openings 3111 to 3113.
- each of the nozzles 371 to 377 has a corresponding first.
- the first openings 3111 to 3113 are arranged so as to be positioned at substantially the center of the openings 3111 to 3117.
- the tip portion of the nozzle 37 and the upper surface 31a of the top surface portion 310 of the water cooling plate (first heat shielding plate) 31 are located on the same XY plane, but are not limited thereto.
- the nozzle 37 may protrude from the upper surface 31 a through the first opening 311 from the water-cooled plate 31.
- the reflector (third heat shielding plate) 32 is disposed so as to surround the heater 34 and the evaporation source case 35.
- the reflector 32 is disposed between the water cooling plate 31 and the heater 34.
- the top surface portion of the reflector 32 disposed to face the top surface portion 310 of the water-cooled plate 31 is disposed to face the top surface 352 of the container main body 35 so as to be separated from the top surface portion 352 and to be parallel to the XY plane.
- the reflector 32 is configured by stacking three single reflectors 321, 322, and 323 separated from each other.
- the reflector 32 is provided to reduce the radiant heat reaching the glass substrate 9 from the heater 34 and the evaporation source case 35 heated by the heater 34.
- the amount of radiant heat reaching the water-cooled plate 31 can be reduced stepwise.
- Aluminum, stainless steel, molybdenum, tantalum, or the like can be used for the reflector.
- the water cooling plate 31 when silver is generated using silver as a thin film material, it is necessary to heat the silver to about 1100 ° C. If only the water cooling plate 31 is used as a heat shielding plate, the water flowing in the water cooling plate 31 boils. Therefore, the water-cooled plate 31 may not be able to exhibit a sufficient cooling function (heat shielding function).
- the radiation heat from the evaporation source case 35 heated by the heater 34 and the heater 34 is, for example, 900 ° C. by the single reflector 321.
- the temperature is decreased stepwise, such as 500 ° C. by the single reflector 322 and 300 ° C. by the single reflector 323, and when reaching the water cooling plate 31, the radiant heat is sufficiently reduced.
- radiant heat can be reduced efficiently.
- the reflector 32 has a plurality of third openings 324 through which the nozzles 37 provided corresponding to the nozzles 37 pass.
- the third opening 324 has a third opening region that is larger than the opening 380 of the nozzle 37.
- the third opening 324 is provided in consideration of the positional deviation amount of the nozzle 37 due to the thermal expansion of the container body 351.
- the reflector 32 is provided with a third opening 324 so that the reflector 32 and the nozzle 37 do not contact with each other in order to prevent nozzle clogging.
- the third opening 324 has a substantially elliptical or oval planar shape having a major axis along the X-axis direction and a minor axis along the Y-axis direction.
- the length a in the longitudinal direction (X-axis direction) of the evaporation source 3 is about 30 cm to 3 m, for example, and the number of nozzles 37 and the evaporation source 3 depend on the size of the film formation target and the film formation pattern.
- the length a in the longitudinal direction is determined.
- the major axis c of the first opening 311 provided in the top surface part 310 of the water cooling plate 31 is 20 mm, and the minor axis e is 12 mm.
- the outer diameter d of the nozzle 37 is 10 mm, and the pitch (the distance between the centers of adjacent nozzles) b of the nozzle 37 is 10 mm to 25 mm.
- the number and arrangement position of the nozzles 37 can be arbitrarily set.
- the nozzles 37 may be arranged so that the pitch of the nozzles 37 arranged at the end portion of the evaporation source 3 is dense, so that a uniform film can be formed on the substrate surface.
- the number of nozzles 37 is set to seven and the nozzles 37 are illustrated and described so that the pitches of the nozzles 37 are equal.
- the follower reflectors (second heat shielding plates) 331 to 337 are fixed to the nozzles 371 to 377 so as to correspond to the plurality of nozzles 371 to 377, respectively.
- the tracking reflectors 331 to 337 are provided separately from each other.
- the follower reflector 331 is the nozzle 371, the follower reflector 332 is the nozzle 372, the follower reflector 333 is the nozzle 373, the follower reflector 334 is the nozzle 374, the follower reflector 335 is the nozzle 375, the follower reflector 335 is the nozzle 375, and the follower reflector.
- Reference numeral 336 is fixed to the nozzle 376, and the follower reflector 337 is fixed to the nozzle 377.
- the tracking reflectors 331 to 337 are collectively referred to as the tracking reflector 33, and description will be made using reference numerals 331 to 337 as necessary.
- the tracking reflector 33 Since the tracking reflector 33 is fixedly disposed on the nozzle 37, even if the position of the nozzle 37 varies due to thermal expansion of the container body 351, the position of the tracking reflector 33 varies following this.
- the follow-up reflector 33 is disposed between the top surface portion 310 and the reflector 32 of the water-cooled plate 31 in the Z-axis direction and spaced apart from the top surface portion 310 and the reflector 32.
- the tracking reflector 33 is disposed opposite to the top surface 352 so as to be opposed to the top surface 352.
- the follower reflector 33 has a larger outer shape than the first opening region of the first opening 311 of the water-cooled plate 31.
- the follower reflector 33 has a substantially rectangular plate shape whose horizontal length parallel to the X-axis direction is 40 mm and whose vertical length parallel to the Y-axis direction is 25 mm.
- the plurality of follower reflectors 331 to 337 are arranged apart from each other on the same XY plane.
- the distance between the adjacent follower reflectors 33 is 5 mm, for example.
- the distance between the adjacent follower reflectors 33 is such that the adjacent follower reflectors do not come into contact with each other even if the position of the follower reflector 33 fluctuates following the position of the nozzle 37 due to the thermal expansion of the container body 351. Is set.
- a second opening 330 through which the corresponding nozzle 37 penetrates is provided at a substantially central portion of the tracking reflector 33.
- the second opening 330 has a substantially circular planar shape, and three protruding portions 38 protruding toward the center of the second opening 330 are formed at the opening end.
- the three protrusions 38 are arranged at equal intervals.
- the protruding portion 38 has an acute angle portion 38a, and the follower reflector 33 is fixedly disposed on the nozzle 37 by supporting the nozzle 37 at three points by the three acute angle portions 38a.
- the follower reflector 33 is fixed to the nozzle 37 with three-point support, but the number of support points is not limited to three.
- the same cylindrical nozzle 37 is taken as an example regardless of which XY plane the cross section cut in the direction perpendicular to the Z-axis direction is.
- the present invention is not limited to this.
- the outer shape in which the cross-sectional shape that is continuously cut in the direction perpendicular to the Z-axis direction in the Z-axis direction becomes larger may be a cylindrical shape having a tapered shape. Then, by forming the nozzle 37 having an outer shape such that the opening 380 for releasing the vaporized substance of the thin film material 36 to the outside of the evaporation source 3 is smaller than the opening on the side connected to the container body 351.
- the tracking reflector 33 When assembling the second opening 330 of the tracking reflector 33 through the nozzle 37, the tracking reflector 33 can be easily positioned in the Z-axis direction.
- the nozzle is attached so that its longitudinal direction is perpendicular to the top surface of the evaporation source case.
- the nozzle may be attached obliquely to the top surface at an angle.
- the first of the water-cooled plate 31 is projected.
- the opening region (first opening 311) and the third opening region (third opening 324) of the reflector 32 substantially overlap each other.
- the 1st opening part 311 and the 3rd opening part 324 are formed so that the nozzle 37 may be located inside the 1st opening area
- the water-cooled plate 31, the reflector 32, and the follower reflector 33 are arranged so that the first opening region and the third opening region that overlap each other are positioned in the projection region of the rectangular outer shape of the follower reflector 33. .
- the positional relationship that the first opening region and the third opening region are located within the projected region of the outer shape of the follower reflector 33 is such that the position of the nozzle 37 fluctuates due to thermal expansion of the container body 351 due to heating during film formation.
- the tracking reflector 33 is arranged so as to be maintained even in the case.
- the evaporation source case 35 is supported by the fixed support portion 391 and the movable support portion 392 on the bottom surface portion 313 of the cuboid water cooling plate 31.
- the water-cooled plate has a rectangular parallelepiped shape, but the shape is not limited to this.
- the film formation target in this embodiment, the glass substrate
- the film is surrounded by the film formation target 9 and the heater 34. What is necessary is just to become a shape by which at least a water-cooling board is arrange
- the fixed support portion 391 has a shape having a longitudinal direction in the Y-axis direction.
- the fixed support portion 391 is disposed in the center of the evaporation source case 35 between the bottom surface of the evaporation source case 35 and the bottom surface portion 313 of the water cooling plate 31.
- a part of the bottom surface of the evaporation source case 35 is installed and fixed to the bottom surface portion 313 of the water cooling plate 31 by the fixed support portion 391.
- the fixed support portion 391 is disposed in the central portion of the evaporation source case 35 where displacement due to expansion hardly occurs even if thermal expansion of the container main body 351 occurs due to heating during film formation.
- the movable support portion 392 is disposed between the bottom surface of the evaporation source case 35 and the bottom surface portion 313 of the water cooling plate 31.
- the movable support portions 392 are arranged opposite to each other in the vicinity of both end portions in the longitudinal direction of the evaporation source case 35 with the fixed support portion 391 as a boundary.
- the movable support portion 392 is installed and fixed on the bottom surface of the evaporation source case 35 and is configured to be movable on the bottom surface portion 313 of the water cooling plate 31.
- the movable support portion 392 is provided so as to be movable in the X-axis direction according to the amount of expansion in the X-axis direction of the container body 351 due to the thermal expansion of the container body 351 due to the heating of the heater 34.
- a pipe roller having a major axis direction in the Y-axis direction can be used as the movable support portion 392.
- the pipe roller can be rotatably installed on the bottom surface of the evaporation source case 35, and the pipe roller can be configured to move along the X-axis direction on the bottom surface portion 313 of the water cooling plate 31.
- the evaporation source case 35 is supported on the bottom surface portion 313 of the water-cooled plate 31 via the fixed support portion 391 and the movable support portion 392.
- the fixed support portion 391 and the movable support portion 392 are provided with their heights adjusted so that the evaporation source case 35 is held horizontally.
- the movable support portion 392 becomes X in accordance with the expansion. Since the container slides in the axial direction, the container body 351 is not distorted.
- the evaporation source case 35 when the bottom surface of the evaporation source case 35 is installed and fixed so that the evaporation source case 35 does not move due to thermal expansion during heating, the evaporation source case is distorted by the amount of expansion due to thermal expansion. As a result, the smoothness of the inner bottom surface of the evaporation source case is lost, the evaporation of the thin film material becomes non-uniform in the surface, and the film thickness of the formed thin film varies.
- the evaporation source case 35 is supported by the water-cooled plate 31 by the fixed support portion 391 and the movable support portion 392, even if the container main body 351 is extended by thermal expansion, it is in accordance with the extension amount. Since the evaporation source case 35 is configured to be movable in the X-axis direction by the movable support portion 392, the evaporation source case 35 is not distorted. Therefore, a thin film having a uniform in-plane thickness can be formed.
- the movable support portion 392 is installed and fixed to the evaporation source case 35 so that the movable support portion 392 can move on the inner bottom surface portion of the rectangular water cooling plate 31. It is not limited to.
- the movable support portion 392 may be installed and fixed on the bottom surface portion 313 of the water cooling plate 31 without being installed and fixed on the evaporation source case 35, and the evaporation source case 35 may be supported by the movable support portion 392.
- the container main body 351 expands due to thermal expansion, the expansion of the container main body 351 is not hindered by the rotation of the movable support portion 392, and the evaporation source case 35 is not distorted.
- a thin film having a thickness can be formed.
- FIGS. 5 and 7 correspond to partially enlarged views of the vicinity of the nozzle 37 surrounded by a dotted line A in FIG.
- FIG. 5 is a partial view of the evaporation source 3 according to the present embodiment in which the tracking reflector 33 is provided.
- FIG. 5 is a partially enlarged top view showing a state before and after heating near the nozzle of the evaporation source 3 and a cross-sectional view corresponding thereto.
- FIG. 7A and 7B are partial views of the evaporation source 203 according to the comparative example in which the tracking reflector 33 is not provided.
- FIG. 7A is a partially enlarged top view showing a state before and after heating in the vicinity of the nozzle, and a cross-sectional view corresponding thereto.
- FIG. 7B shows the state of radiant heat B radiated from the evaporation source during heating. 7, the same code
- nozzles 375 and 376 are positioned on the left side of the respective first elliptical openings 3115 and 3116, respectively.
- the container main body 351 expands in the longitudinal direction due to heating during film formation and expands in the longitudinal direction, and the positions of the nozzles 375 and 376 fluctuate accordingly, the central portions of the first openings 3115 and 3116 respectively.
- Nozzles 375 and 376 are located respectively.
- the radiant heat B from the heater 34 and the evaporation source case 35 heated by the heater 34 is provided in the first opening 311 and the reflector 32 provided in the top surface portion 310 of the water cooling plate 31.
- the third opening 324 which is radiated out of the evaporation source 203.
- the radiant heat B radiated out of the evaporation source 203 reaches the glass substrate 9 and heats the glass substrate 9.
- the vaporized material of the thin film material that has reached the glass substrate 9 does not move around the glass substrate 9 and does not adhere properly, and re-evaporates to form a film properly. Absent.
- the metal mask expands due to radiant heat, resulting in a displacement of the film formation pattern.
- the positional deviation of the film formation pattern is large in display characteristics when the glass substrate 9 is a substrate constituting a display device, for example. It will have an effect.
- the follow reflector 33 can change its position following the change of the position of the nozzle 37 due to heating during film formation.
- the evaporation device 35 expands due to heating during film formation and the position of the nozzle 37 fluctuates, when the water cooling plate 31, the reflector 32, and the follower reflector 33 are projected onto the top surface 352, the first opening region Since the third opening region is configured to be located within the projected region of the outer shape of the follower reflector 33, the follower reflector 33 can reduce the radiant heat in the same manner as when thermal expansion has not occurred.
- the follower reflector 33 is provided separately for each nozzle 37. Therefore, the movement of the nozzle 37 is not hindered.
- the radiant heat from the evaporation source case 35 heated by the heater 34 and the heater 34 toward the glass substrate 9 can be shielded or reduced.
- the heating of the glass substrate 9 is suppressed, the vaporized substance of the thin film material 36 can be adhered on the glass substrate 9, and film formation can be performed efficiently.
- highly accurate pattern deposition can be performed.
- the nozzle 37 discharges vapor (vaporized material) of the thin film material.
- vapor vaporized material
- the follower reflector 33 having a heat shielding function to follow the movement of the nozzle 37 is fixed to the nozzle 37, it is desirable that the nozzle 37 is not cooled as much as possible.
- the follower reflector 33 is disposed on the nozzle 37. It is configured to be fixed by point contact. By fixing by making point contact in this way, the contact area between the nozzle 37 and the follower reflector 33 can be reduced, thereby inhibiting the heat conduction from the nozzle 37 to the follower reflector 33, and by the follower reflector 33. Cooling of the nozzle 37 can be suppressed.
- the tracking reflector 33 is desirably formed of a material having a low emissivity, for example, 0.1 or less.
- a material having a low emissivity for example, 0.1 or less.
- the tracking reflector 33 with a material having a low thermal conductivity, for example, 10 w / m ⁇ k or less, and cooling of the nozzle 37 can be further suppressed.
- a metal having a low emissivity such as an alloy
- inorganic substances such as Al 2 O 3 (alumina), BN (boron nitride), PBN (Pyrolytic Boron Nitride, boron nitride produced by low pressure thermal decomposition CVD (Chemical Vapor deposition)), SiO 2 (silicon dioxide), inorganic A fiber heat insulating material etc. can be used.
- PBN with an emissivity of 0.4 or Inconel (registered trademark) with an emissivity of 0.15 was used. Further, in order to reduce the emissivity, the surface roughness of the surface of the follower reflector 33 may be reduced to a mirror state.
- the amount of radiant heat can be reduced as compared with the case where the follower reflector 33 is not provided. Therefore, the radiant heat radiated from the evaporation source 3 can be reduced.
- the follower reflector 33 is provided for each nozzle 37, and the follower reflector 33 follows the change in the position of the nozzle 37. Therefore, the evaporation source case 35 expands during film formation and the amount of positional deviation of each nozzle 37 differs. Even if the position fluctuates, the follow-up reflector 33 can reduce the amount of radiant heat without changing from that before thermal expansion.
- the tracking reflector 33 is fixed to the nozzle 37 by point contact, and the contact area between the tracking reflector 33 and the nozzle 37 is reduced to suppress the cooling of the nozzle 37.
- the invention is not limited to this.
- a ring-shaped gap member having a low thermal conductivity may be provided between the follower reflector 33 and the nozzle 37 to suppress the cooling of the nozzle 37.
- FIG. 6 is a partially enlarged view in the vicinity of the nozzle of the evaporation source 103 according to the second embodiment.
- FIG. 6A is a partially enlarged perspective view of the evaporation source 103 in the vicinity of the nozzle of the evaporation source 103 as seen from the upper oblique direction.
- FIG. 6B is a partial enlarged cross-sectional view of the evaporation source 103.
- the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
- the first embodiment differs from the second embodiment in that the shape of the opening of the tracking reflector is different, and in the second embodiment, a gap member is provided.
- the second heat is separated from the top surface portion 310 and the reflector 32 between the top surface portion 310 and the reflector 32 of the water cooling plate 31 along the Z-axis direction.
- a follower reflector 1033 is provided as a shielding plate. Further, a ring-shaped gap member 1038 is provided between the follower reflector 1033 and the nozzle 37. Also in the second embodiment, the tracking reflector 1033 is individually arranged for each nozzle 37 as in the first embodiment.
- the follower reflector 1033 has a rectangular outer shape like the follower reflector 33 in the first embodiment.
- the tracking reflector 1033 has a second opening 1330 at a substantially central portion thereof.
- the second opening 1330 has a substantially circular shape on the XY plane.
- the outer shape of the nozzle 37 is located within the projection area of the second opening 1330, and the second shape and the second shape of the nozzle 37 are the same.
- the opening 1330 overlaps concentrically.
- a ring-shaped gap member 1038 is positioned so as to fill the gap between the outer shape of the nozzle 37 and the second opening 1330.
- the tracking reflector 1033 is fixedly disposed on the nozzle 37 via the gap member 1038. As the tracking reflector 1033 is fixed to the nozzle 37 in this way, the position of the tracking reflector 1033 also changes following the change in the position of the nozzle 37. By providing the follower reflector 1033, the amount of radiant heat from the water cooling plate 31 and the reflector 32 to the glass substrate 9 from the heater 34 and the evaporation source case 35 heated by the heater 34 can be reduced.
- the tracking reflector 1033 is desirably formed of a material having a low emissivity, and the same material as the tracking reflector 33 described in the first embodiment can be used.
- a material having a low thermal conductivity for the gap member 1038.
- a material having a thermal conductivity of 30 w / m ⁇ k or less is preferably used.
- a specific material alumina, silicon nitride, zirconia, or the like can be used.
- the cooling of the nozzle 37 by the tracking reflector 1033 can be suppressed, and the selection range of the material used for the tracking reflector 1033 can be expanded.
- a gap member made of a material having low thermal conductivity is provided between the protrusion 38 and the nozzle 37. It is good also as a structure.
- the follower reflector 33 supports the nozzle 37 at three points and is fixed to the nozzle 37, and supports the point 37 to suppress the cooling of the nozzle 37, but is not limited thereto.
- the size of the second opening provided in the follower reflector and the outer shape of the nozzle 37 are made substantially equal, and the nozzle 37 is passed through the second opening provided in the follower reflector so that the follower reflector and the nozzle 37 are second.
- the follower reflector may be fixed to the nozzle 37 by making contact with the side surface of the opening.
- the tracking reflector in order to shield the radiant heat and suppress the cooling of the nozzle 37 by the tracking reflector, has a low thermal conductivity, for example, 30 w / m ⁇ k or less, and further has an emissivity.
- PBN having an emissivity of 0.4
- Inconel registered trademark having an emissivity of 0.15 can be used.
- the present invention is not limited to this, and the present invention can also be applied to the formation of an organic film such as a color filter.
- one follower reflector is provided in the nozzle which has one opening part (vaporization substance discharge port), it is not limited to this.
- one follower reflector may be provided for one nozzle having a plurality of openings (vaporizer discharge ports) arranged side by side.
- one tracking reflector can be provided for one nozzle having four openings arranged side by side.
- the nozzle having a plurality of openings includes a form of a nozzle group in which a plurality of nozzles 37 each having one opening 380 having the structure shown in the above embodiment are grouped.
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Abstract
Description
上記蒸発源容器は、天面を有し薄膜材料を収容する容器本体と、上記容器本体と連結し上記天面から突出して一軸方向に配置され、上記薄膜材料の気化物質を放出する開口部を有する複数のノズルとを備える。
上記加熱装置は、上記容器本体を加熱する。
上記第1の熱遮蔽板は、上記天面と離間して対向配置され、複数の上記ノズル毎に対応して設けられた上記ノズルが貫通する上記ノズルの開口部よりも大きい第1の開口領域を有する複数の第1の開口部を備える。
上記第2の熱遮蔽板は、上記容器本体と上記第1の熱遮蔽板との間に複数の上記ノズル各々に固定されて上記天面と離間して対向配置され、上記第1の開口領域よりも大きい外形を有し上記ノズルが貫通する第2の開口部を有する。
このような構成によれば、ノズルと第2の熱遮蔽板との接触面積を小さくすることができるので、第2の熱遮蔽板によるノズルの冷却を抑制することができる。これにより、ノズル内を通過する薄膜材料の気化物質の冷却が抑制されノズル詰まりを防止することができる。
このような構成によれば、加熱装置の加熱により容器本体が膨張し、容器本体が一軸方向に伸張するのに伴って容器本体に連結するノズルの位置ずれが生じても、常に第1の開口部内にノズルが位置するように構成することができる。
更に具備してもよい。
このように、第3の熱遮蔽板を設けることにより、効率よく輻射熱を減少させることができる。
上記収容部は、成膜対象物を収容可能である。
上記蒸発源は、天面を有し薄膜材料を収容する容器本体と、上記容器本体と連結し上記天面から突出して一軸方向に配置され、上記薄膜材料の気化物質を上記成膜対象物に向かって放出する開口部を有する複数のノズルとを備える蒸発源容器と、上記容器本体を加熱する加熱装置と、上記天面と離間して対向配置され、複数の上記ノズル毎に対応して設けられた各上記ノズルが貫通する上記ノズルの開口部よりも大きい第1の開口領域を有する複数の第1の開口部を備える第1の熱遮蔽板と、上記容器本体と上記第1の熱遮蔽板との間に複数の上記ノズル各々に固定されて上記天面と離間して対向配置され、上記第1の開口領域よりも大きい外形を有し上記ノズルが貫通する第2の開口部を有する第2の熱遮蔽板とを備える。
[成膜装置の構成]
図1は、本発明の一実施形態に係る成膜装置の模式断面図である。
成膜装置1は、収容部としての真空槽2と、真空槽2の内部の底面側に配置されたリニアソース型の蒸発源3と、成膜対象物を保持する保持部としての基板ホルダ8と、真空排気系7と、膜厚センサ6と、温度測定センサ10と、コントローラ4と、電源5を具備する。
基板ホルダ8は、真空槽2の内部の天面側に配置される。基板ホルダ8は成膜対象物としてのガラス基板9を成膜すべき面(成膜対象面)9aを下方に向けて保持する。リニアソース型の蒸発源3は、X軸方向に長手方向を有する略直方体形状の外形を有する。基板ホルダ8は、蒸発源3の長手方向(X軸方向)に直交する方向(Y軸方向)に移動可能に構成される。
真空排気系7は真空槽2に接続される。真空排気系7は、真空槽2の内部を真空排気し、成膜に適した真空雰囲気を形成する。
膜厚センサ6は、蒸発源3からの蒸気(気化物質)の量を測定し、ガラス基板9上に成膜される薄膜の厚さ(あるいは成膜レート)を制御する。膜厚センサ6は、蒸発源3から放出される薄膜材料の気化物質がガラス基板9に到達するのを妨げないように配置される。膜厚センサ6の出力はコントローラ4へ入力される。
[蒸発源の構成]
図1~図4を用いて蒸発源3について説明する。
図2は蒸発源3の模式上面図である。図3は蒸発源3のノズル付近の部分拡大斜視図である。図4Aは、図3における蒸発源3のノズル付近の斜視図であり、後述する水冷板31の底面部313から天面部310にむかう方向からみた部分拡大斜視図である。図4Bは図4Aを更に拡大した斜視図である。
以下、追従リフレクタ331~337を一括して追従リフレクタ33と称し、必要に応じて331~337の符号を用いて説明する。
例えば、Z軸方向に連続的にZ軸方向に垂直な方向で切断した断面形状が大きくなっていく外形がテーパ形状を有する筒型にしてもよい。そして、薄膜材料36の気化物質を蒸発源3の外部に放出する開口部380が、容器本体351に連結する側の開口部よりも小さくなるような外形がテーパ形状を有するノズル37とすることにより、追従リフレクタ33の第2の開口部330にノズル37を通して組み立てる際、追従リフレクタ33のZ軸方向の位置決めが容易となる。
また、本実施形態においては、ノズルを蒸発源ケースの天面に対してその長手方向が垂直となるように取り付けているが、角度をつけて天面に対して斜めに取り付けてもよい。
図5及び図7は、図2の点線Aで囲まれたノズル37付近の部分拡大図に相当する。
図5は、追従リフレクタ33が設けられている本実施形態に係る蒸発源3の部分図である。図5は、蒸発源3のノズル付近の加熱前後の様子を示す部分拡大上面図、及び、それに対応する断面図である。
上記の実施形態において、追従リフレクタ33は点接触でノズル37に固定され、追従リフレクタ33とノズル37との接触面積を小さくしてノズル37の冷却を抑制していたが、これに限定されない。例えば、追従リフレクタ33とノズル37との間にリング状の熱伝導率の低い間隙部材を設けてノズル37の冷却を抑制する構成としてもよい。
第1の実施形態において、追従リフレクタ33は、3点でノズル37を支持しノズル37に固定され、点で支持することによりノズル37の冷却を抑制していたが、これに限定されない。
上記実施形態においては、薄膜材料として銀を例に挙げて説明したが、これに限定されず、カラーフィルタ等の有機膜の成膜にも本発明を適用できる。
また、上述の実施形態においては、1つの開口部(気化物質放出口)を有するノズルに、1つの追従リフレクタを設けているが、これに限定されない。例えば連続して並んで配置される複数の開口部(気化物質放出口)を有するノズル1つに対して、1つの追従リフレクタを設けるようにしてもよい。例えば、連続して並んで配置される4つの開口部を有するノズル1つに対して1つの追従リフレクタを設けることができる。ここで、複数の開口部を有するノズルは、上記実施形態で示した構造である1つの開口部380を有するノズル37を複数ひとまとめにしたノズル群の形態も含む。
2…真空槽(収容部)
3、103…蒸発源
9…ガラス基板(成膜対象物)
31…水冷板(第1の熱遮蔽板)
32…リフレクタ(第3の熱遮蔽板)
33、1033…追従リフレクタ(第2の熱遮蔽板)
34…ヒータ(加熱装置)
35…蒸発源ケース(蒸発源容器)
36…薄膜材料
37…ノズル
38…突起部
310…水冷板の天面部
311…第1の開口部
324…第3の開口部
351…容器本体
352…天面
380…ノズルの開口部
391…固定支持部
392…可動支持部
Claims (6)
- 天面を有し薄膜材料を収容する容器本体と、前記容器本体と連結し前記天面から突出して一軸方向に配置され、前記薄膜材料の気化物質を放出する開口部を有する複数のノズルとを備える蒸発源容器と、
前記容器本体を加熱する加熱装置と、
前記天面と離間して対向配置され、複数の前記ノズル毎に対応して設けられた各前記ノズルが貫通する前記ノズルの開口部よりも大きい第1の開口領域を有する複数の第1の開口部を備える第1の熱遮蔽板と、
前記容器本体と前記第1の熱遮蔽板との間に複数の前記ノズル各々に固定されて前記天面と離間して対向配置され、前記第1の開口領域よりも大きい外形を有し前記ノズルが貫通する第2の開口部を有する第2の熱遮蔽板と
を具備する蒸発源。 - 請求項1に記載の蒸発源であって、
前記第2の熱遮蔽板は、前記ノズルに点接触で固定される
蒸発源。 - 請求項1又は請求項2に記載の蒸発源であって、
前記第1の開口部は、前記一軸方向に長手方向を有する形状である
蒸発源。 - 請求項1から請求項3のいずれか1項に記載の蒸発源であって、
前記蒸発源容器と前記第2の熱遮蔽板との間に前記天面と対向して配置され、複数の前記ノズル毎に対応して設けられた各前記ノズルが貫通する前記ノズルの開口部よりも大きい第3の開口領域を有する複数の第3の開口部を備える第3の熱遮蔽板を
更に具備する蒸発源。 - 請求項1から請求項4のいずれか1項に記載の蒸発源であって、
前記第1の熱遮蔽板は、前記第1の開口部を有する天面部と前記天面部と対向する底面部を有する前記蒸発源容器を取り囲む形状の外形を有し、
前記容器本体は、前記加熱装置の加熱による前記容器本体の熱膨張による前記容器本体の前記一軸方向における伸張量に応じて前記一軸方向に移動可能に前記底面部に支持される
蒸発源。 - 成膜対象物を収容可能な収容部と、
天面を有し薄膜材料を収容する容器本体と、前記容器本体と連結し前記天面から突出して一軸方向に配置され、前記薄膜材料の気化物質を前記成膜対象物に向かって放出する開口部を有する複数のノズルとを備える蒸発源容器と、前記容器本体を加熱する加熱装置と、前記天面と離間して対向配置され、複数の前記ノズル毎に対応して設けられた各前記ノズルが貫通する前記ノズルの開口部よりも大きい第1の開口領域を有する複数の第1の開口部を備える第1の熱遮蔽板と、前記容器本体と前記第1の熱遮蔽板との間に複数の前記ノズル各々に固定されて前記天面と離間して対向配置され、前記第1の開口領域よりも大きい外形を有し前記ノズルが貫通する第2の開口部を有する第2の熱遮蔽板とを備える蒸発源
を具備する成膜装置。
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109652773A (zh) * | 2019-02-25 | 2019-04-19 | 京东方科技集团股份有限公司 | 一种防着组件以及蒸镀设备 |
CN110499492A (zh) * | 2019-09-19 | 2019-11-26 | 京东方科技集团股份有限公司 | 一种蒸镀装置及其蒸镀方法 |
JP2020132985A (ja) * | 2019-02-25 | 2020-08-31 | 株式会社アルバック | 真空処理装置及び真空処理方法 |
CN113227436A (zh) * | 2018-12-21 | 2021-08-06 | 应用材料公司 | 气相沉积装置和用于在真空腔室中涂布基板的方法 |
KR102680671B1 (ko) * | 2018-12-21 | 2024-07-01 | 어플라이드 머티어리얼스, 인코포레이티드 | 기상 증착 장치 및 진공 챔버에서 기판을 코팅하기 위한 방법 |
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CN115522167A (zh) * | 2022-09-22 | 2022-12-27 | 京东方科技集团股份有限公司 | 一种蒸镀源设备 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005054270A (ja) * | 2003-08-04 | 2005-03-03 | Lg Electron Inc | 有機電界発光層の蒸着源 |
JP2012184486A (ja) * | 2011-03-08 | 2012-09-27 | Hitachi High-Technologies Corp | 蒸発源および蒸着装置 |
JP2012207263A (ja) * | 2011-03-29 | 2012-10-25 | Hitachi High-Technologies Corp | 蒸着方法および蒸着装置 |
JP2014047382A (ja) * | 2012-08-30 | 2014-03-17 | Canon Tokki Corp | 蒸発源 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009034916A1 (ja) * | 2007-09-10 | 2009-03-19 | Ulvac, Inc. | 蒸気放出装置、有機薄膜蒸着装置及び有機薄膜蒸着方法 |
WO2009060739A1 (ja) * | 2007-11-05 | 2009-05-14 | Ulvac, Inc. | 蒸着源、有機el素子の製造装置 |
JP5244723B2 (ja) * | 2009-07-10 | 2013-07-24 | 株式会社日立ハイテクノロジーズ | 成膜装置 |
KR101760897B1 (ko) | 2011-01-12 | 2017-07-25 | 삼성디스플레이 주식회사 | 증착원 및 이를 구비하는 유기막 증착 장치 |
JP5520871B2 (ja) * | 2011-03-31 | 2014-06-11 | 株式会社日立ハイテクノロジーズ | 蒸着装置 |
CN103080366B (zh) * | 2011-06-29 | 2014-12-24 | 松下电器产业株式会社 | 加热装置、真空加热方法和薄膜制造方法 |
JP2013211138A (ja) * | 2012-03-30 | 2013-10-10 | Hitachi High-Technologies Corp | 蒸発源、及びそれを用いた真空蒸着装置 |
JP2013211137A (ja) * | 2012-03-30 | 2013-10-10 | Samsung Display Co Ltd | 真空蒸着方法及びその装置 |
JP2014072005A (ja) * | 2012-09-28 | 2014-04-21 | Hitachi High-Technologies Corp | 蒸発源、真空蒸着装置及び有機el表示装置製造方法 |
JP2015067847A (ja) * | 2013-09-27 | 2015-04-13 | 株式会社日立ハイテクファインシステムズ | 真空蒸着装置 |
KR102386658B1 (ko) * | 2015-08-03 | 2022-04-14 | 삼성디스플레이 주식회사 | 증착원 |
JP6595568B2 (ja) * | 2017-12-12 | 2019-10-23 | キヤノントッキ株式会社 | 蒸発源装置及び蒸着装置 |
-
2018
- 2018-04-25 WO PCT/JP2018/016861 patent/WO2018199184A1/ja active Application Filing
- 2018-04-25 JP JP2018558778A patent/JP6586535B2/ja active Active
- 2018-04-25 CN CN201880027546.2A patent/CN110573647B/zh active Active
- 2018-04-25 KR KR1020197032455A patent/KR102234985B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005054270A (ja) * | 2003-08-04 | 2005-03-03 | Lg Electron Inc | 有機電界発光層の蒸着源 |
JP2012184486A (ja) * | 2011-03-08 | 2012-09-27 | Hitachi High-Technologies Corp | 蒸発源および蒸着装置 |
JP2012207263A (ja) * | 2011-03-29 | 2012-10-25 | Hitachi High-Technologies Corp | 蒸着方法および蒸着装置 |
JP2014047382A (ja) * | 2012-08-30 | 2014-03-17 | Canon Tokki Corp | 蒸発源 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113227436A (zh) * | 2018-12-21 | 2021-08-06 | 应用材料公司 | 气相沉积装置和用于在真空腔室中涂布基板的方法 |
JP2022513996A (ja) * | 2018-12-21 | 2022-02-09 | アプライド マテリアルズ インコーポレイテッド | 真空チャンバ内で基板をコーティングするための気相堆積装置及び方法 |
JP7309882B2 (ja) | 2018-12-21 | 2023-07-18 | アプライド マテリアルズ インコーポレイテッド | 真空チャンバ内で基板をコーティングするための気相堆積装置及び方法 |
KR102680671B1 (ko) * | 2018-12-21 | 2024-07-01 | 어플라이드 머티어리얼스, 인코포레이티드 | 기상 증착 장치 및 진공 챔버에서 기판을 코팅하기 위한 방법 |
CN109652773A (zh) * | 2019-02-25 | 2019-04-19 | 京东方科技集团股份有限公司 | 一种防着组件以及蒸镀设备 |
JP2020132985A (ja) * | 2019-02-25 | 2020-08-31 | 株式会社アルバック | 真空処理装置及び真空処理方法 |
CN109652773B (zh) * | 2019-02-25 | 2021-01-22 | 京东方科技集团股份有限公司 | 一种防着组件以及蒸镀设备 |
CN110499492A (zh) * | 2019-09-19 | 2019-11-26 | 京东方科技集团股份有限公司 | 一种蒸镀装置及其蒸镀方法 |
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