TWI593817B - Coating device - Google Patents

Description

Coating device

The present invention relates to a coating apparatus.

In recent years, an organic EL display device using an organic electroluminescence device has been recognized as a display device instead of a CRT and an LCD.

In the organic EL display device, the electrode layer and the plurality of organic light-emitting layers are formed on the substrate, and the sealing layer is further formed. Since the self-luminous light is emitted, the high-speed reactivity is excellent compared with the LCD, and a high viewing angle and a high angle can be achieved. Contrast.

Such an organic EL device (device) is generally produced by a vacuum deposition method, and vapor deposition is performed by aligning a substrate and a vapor deposition mask in a vacuum chamber, thereby evaporating the mask. A vapor deposition film of a coating pattern is formed on the substrate.

In addition, the organic EL device (device) is a production method for mass production in an inexpensive and efficient manner, and the film is coated on a flexible substrate using a sheet-like plastic film by a continuous rolling method. A method in which a substrate is continuously fed to one side.

However, in the manufacture of such an organic EL device (equipment), as the size of the substrate increases, the vacuum chamber also needs to be enlarged. Further, since the evaporation source and the transport mechanism are disposed inside the vacuum chamber, the bending of the wall surface of the vacuum chamber caused by the vacuum exhaust must be minimized.

Therefore, with the increase in the size of the vacuum chamber, it is necessary to thicken the wall thickness of the vacuum chamber, and the ribs disposed on the outer wall of the vacuum chamber need to be increased in number, and the thickness of the plate is increased, and the height must be increased to make the coating device The weight and cost are becoming problems.

For example, Patent Document 1 proposes a plating apparatus that deposits a vapor deposition material that is ejected from a vapor deposition source disposed below while transporting a substrate to be coated. However, in this configuration, since the vapor deposition source is supported on the bottom surface of the vacuum container and the substrate transfer roller is supported on the side surface of the vacuum container, the load during driving of the substrate transfer mechanism and the assembly and evaporation in the atmosphere are performed. Since the positional relationship of the plating source is deteriorated due to the deviation of the film thickness distribution due to the deviation, it is necessary to suppress the bending of the vacuum vessel after the vacuum evacuation by the above-described method, and to make the weight of the vacuum container remarkable.

Further, Patent Document 2 proposes a vacuum vapor deposition device that can perform a stable scanning operation of an evaporation source without depending on a pressure state inside the vacuum chamber, but the support position of the substrate and the mask is not clearly indicated, and the vacuum chamber is exhausted. Whether the positional relationship between the substrate and the mask and the evaporation source is kept unclear, and the positional accuracy of the evaporation source including the substrate and the mask is strictly required to perform scanning coating on the substrate and the mask in a separated state. It is difficult to form the desired coating pattern at the desired position.

[Practical Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2002-348659

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2010-248584

The present invention has been made in view of the above problems, and an object of the invention is to provide a coating apparatus which does not affect the substrate and the coating source due to the increase in the size of the substrate and the increase in the size of the vacuum chamber due to the pressure fluctuation in the vacuum chamber. The positional relationship can be maintained in a good position, and high-precision coating can be performed at low cost and light weight.

The essence of the invention will be described with reference to the accompanying drawings.

A coating apparatus which is provided with a vacuum chamber 3 for forming a thin film on a substrate 2 by depositing a plating material which is emitted from a plating source 1, and is characterized in that the substrate 2 or the plating source 1 is transported. The transport mechanism is constituted by a moving portion 4 and a guide portion 5 for guiding the movement of the moving portion 4, and the guide portion 5 is formed outside the vacuum chamber 3 and supported The guide post 7 penetrating through the through hole 6 provided in the wall surface of the vacuum chamber 3 penetrates the guide post 7 or the installation portion of the guide post 7 and the wall surface around the through hole 6 When the elastic member 8 is connected in an airtight state and the substrate 2 is transported by the transport mechanism, the plating source 1 is created. The base portion 11 of the base post 10 is provided outside the vacuum chamber 3 and held by the through hole 9 provided in the through hole 9 provided on the wall surface of the vacuum chamber 3, and the base post 10 or The installation portion of the susceptor pillar 10 and the wall surface around the through hole 9 are connected to each other through the elastic member 12 in an airtight state, and when the coating source 1 is transported by the transport mechanism, the substrate 2 is held and held. The base portion 11 is provided outside the vacuum chamber 3 and is held by the base portion 11 of the base post 10 that is supported by the through hole 9 provided in the wall surface of the vacuum chamber 3, and the base portion 11 is provided. The seat post 10 or the installation portion of the base post 10 and the wall surface around the through hole 9 are connected in an airtight state through the telescopic member 12, and the transport mechanism, the plating source 1 or the substrate 2 are not subjected to the vacuum. The influence of the deformation of the wall surface by the pressure reduction of the groove 3 is configured such that the positional relationship between the plating source 1 and the substrate 2 is maintained.

Further, a coating apparatus is a coating apparatus having a vacuum chamber 3 in which a coating material which is emitted from a coating source 1 is passed through a mask opening of a vapor deposition mask 20 and is deposited on a substrate 2 to form a thin film on the substrate 2, and is characterized in that A transport mechanism for transporting the substrate 2 or the plating source 1 is provided. The transport mechanism includes a moving portion 4 and a guiding portion 5 for guiding the movement of the moving portion 4, and the guiding portion 5 is a configuration in which the guide post 7 is provided outside the vacuum chamber 3 and supported by the through hole 6 provided in the wall surface of the vacuum chamber 3, and the guide post 7 or the guide post is formed. The installation portion of the seventh portion and the wall surface around the through hole 6 are connected to each other through the elastic member 8 in an airtight state, and when the substrate 2 is transported by the transport mechanism, the plating source 1 is formed in the vacuum chamber 3. The outer portion is held by the base portion 11 of the base post 10 that is supported by the through hole 9 provided in the wall surface of the vacuum chamber 3, and the base post 10 or the base post 10 is held. The installation portion and the wall surface around the through hole 9 are connected to each other through the telescopic member 12 in an airtight state, and when the plating source 1 is transported by the transport mechanism, the holding portion for holding the substrate 2 is formed. The base portion 11 of the base post 10 supported by the through hole 9 provided in the through hole 9 provided on the wall surface of the vacuum chamber 3 outside the vacuum chamber 3 is configured to The installation portion of the susceptor pillar 10 and the wall surface around the through hole 9 are connected to each other through the elastic member 12 in an airtight state, and the transport mechanism, the plating source 1 or the substrate 2 are not decompressed by the vacuum chamber 3. The influence of the deformation of the generated wall surface is configured such that the positional relationship between the plating source 1 and the substrate 2 is maintained.

The coating device according to the first aspect of the invention, wherein the guide portion 5 for moving the moving portion 4 that holds the substrate 2 of the transport mechanism is supported by the guide post 7 In this configuration, the base portion 11 of the plating source 1 is held to be supported by the susceptor pillar 10.

The coating device according to the second aspect of the invention, wherein the guide portion 5 for moving the moving portion 4 that holds the substrate 2 of the transport mechanism is supported by the guide post 7 In this configuration, the base portion 11 of the plating source 1 is held to be supported by the susceptor pillar 10.

And as in the coating device of claim 2 or 4, The substrate 2 and the vapor deposition mask 20 are disposed in a separated state, and the substrate 2 is relatively movably formed with respect to the vapor deposition mask 20, whereby the relative movement is performed in comparison with the vapor deposition mask 20 In a wide range, a film of a plating pattern determined by the vapor deposition mask 20 is formed on the substrate 2.

The coating apparatus according to claim 1 or 2, wherein the guide post 7 or the base post 10 is erected on a stand 13 provided outside the bottom of the vacuum chamber 3, and the guide is The through hole 6 through which the lead post 7 penetrates or the through hole 9 through which the base post 10 penetrates is provided on the bottom surface of the vacuum chamber 3.

The coating apparatus according to claim 1 or 2, wherein the transport mechanism is provided with a linear motor that moves the moving unit 4.

The coating device according to the first or second aspect of the invention, wherein the moving portion 4 includes an accommodating portion 14 that is filled with air in the vacuum chamber 3, and the accommodating portion 14 and the vacuum chamber 3 The external atmospheric pressure space is connected to the joint portion 15 of the hollow introduction portion that introduces the power supply wiring and the cooling pipe toward the accommodating portion 14 , and the adsorption portion 16 that adsorbs and holds the substrate 2 .

The coating apparatus according to the eighth aspect of the invention, further comprising: a substrate alignment mechanism for aligning the substrate 2 with respect to the guiding portion 5, wherein the substrate alignment mechanism is disposed in the housing portion The substrate moving means 29 for moving the adsorption unit 16 and the reference mark having the reference mark arranged in parallel with the guiding portion 5 The display unit 17 and an imaging means for imaging the substrate mark provided on the reference mark and the substrate 2, and an operation means for actuating the substrate moving means 29 based on the imaging result, and an imaging means housing portion 18 for accommodating the imaging means.

The coating apparatus according to the ninth aspect of the invention, wherein the image pickup means and the reference mark display portion 17 are disposed on one of the guide portion 5 or the guide post 7 and the vacuum The slots 3 are mechanically independent.

The coating apparatus according to claim 1 or 2, further comprising a coating source alignment mechanism 19 that positions the plating source 1 at the position of the substrate 2.

The coating apparatus according to claim 1 or 2, wherein the coating material is an organic material.

Since the present invention is configured as described above, even if the vacuum chamber is increased in size as the size of the substrate increases, the deformation of the wall surface due to the pressure fluctuation of the vacuum chamber does not affect the positional relationship between the substrate and the coating source, and the positional relationship between the two can be achieved. It is well maintained and is a coating apparatus that can be coated with low cost and light weight with high precision.

In particular, in the production of an organic EL device (device), it is possible to increase the size of the substrate, and it is possible to perform the deposition of the organic EL device (equipment) capable of achieving high-precision vapor deposition even if the vapor deposition of the organic layer is performed with high precision. Coating device.

In the invention of the second to fifth aspects of the invention, it is necessary to maintain the position of the substrate and the vapor deposition mask with high precision, and it is a coating apparatus which can exhibit the effects and effects of the present invention more satisfactorily.

In the invention of the sixth aspect of the patent application, it is possible to easily realize a coating apparatus which is more excellent in practicality with a simple configuration.

Further, in the invention of claim 7, in the drive source, by using a linear motor, the positioning accuracy can be improved and the conveyance stroke can be lengthened.

In the invention according to the eighth aspect of the invention, the accommodating portion, the joint portion, and the absorbing portion are provided in the moving portion, and when the substrate is transported while being sucked, the power supply wiring and the cooling pipe can be permeable at any time. Since the joint portion is supplied from the atmosphere side toward the adsorption portion, the coating device can be continuously operated without increasing the temperature of the substrate.

Further, in the invention of the ninth aspect of the patent application, since the substrate can be aligned in parallel with the guide, the width of the vapor deposition pattern can be prevented from being larger than the desired pattern width during the substrate conveyance.

Further, in the invention of claim 10, the image pickup means and the reference mark display portion are mechanically disposed independently of the vacuum chamber, and the vacuum chamber is not deformed by vacuum exhaust. Affects the positional alignment of the substrate.

Further, in the invention of the eleventh aspect of the patent application, the coating source can be positionally aligned with each other with high precision, and the desired coating pattern can be formed at a desired position across the entire substrate.

And in the invention of claim 12, The coating device for organic materials is more practical.

1‧‧‧ coating source

1a‧‧‧Source of host material

1b‧‧‧Source of dopant material

2‧‧‧Substrate

3‧‧‧vacuum tank

4‧‧‧Mobile Department

5‧‧‧Guide

6‧‧‧through holes

7‧‧‧ Guide pillar

7a‧‧‧ Most of the trails

8,12,33,35‧‧‧ Bellows (Flexible Member)

9‧‧‧through holes

10‧‧‧Base pillar

10a‧‧‧ Most of the trails

11‧‧‧Base plate (base part)

13‧‧‧ 台台

14‧‧‧ Housing Department

15‧‧‧ Joint Department

16‧‧‧Adsorption Department

17‧‧‧ benchmark mark display

18‧‧‧Photography means accommodating department

19‧‧‧ Coating source alignment mechanism

20‧‧‧ evaporated mask

21‧‧‧ mask frame

22‧‧‧Guiding block

23‧‧‧ rails

24‧‧‧ Guide base

25‧‧‧Spherical bearings

26‧‧‧Board

27‧‧‧ magnet

28‧‧‧ coil unit

29‧‧‧Substrate moving means

30‧‧‧Terrace base

31‧‧‧Electrical tray

32‧‧‧ pillar

34‧‧‧through holes

36‧‧‧through holes

38‧‧‧ window

[Fig. 1] A schematic side view of the present embodiment.

[Fig. 2] A schematic side view of a main part of the present embodiment.

[Fig. 3] A schematic side view of a plating source of the present embodiment.

[Fig. 4] A front view of a schematic view of a main part of the present embodiment.

[Fig. 5] A schematic plan view of the transport mechanism of the present embodiment.

[Fig. 6] A front view showing a schematic view of a moving portion of the present embodiment.

[Fig. 7] A schematic front view of the transport mechanism of the present embodiment.

[Fig. 8] A front view showing a schematic view of an image pickup apparatus of the present embodiment.

The embodiments of the present invention which are best considered will show the effects of the present invention in accordance with the drawings and will be briefly explained.

The coating material that is ejected from the coating source 1 is deposited on the substrate 2 through, for example, a mask opening of the vapor deposition mask 20, and a film pattern of the coating pattern determined by the vapor deposition mask 20 is formed on the substrate 2. . In this case, for example, the substrate 2 and the vapor deposition mask 20 are disposed in a separated state, and the substrate 2 is held in a separated state from the vapor deposition mask 20 so as to be relatively movable, by using the substrate 2 With respect to the relative movement, a film of a plating pattern determined by the vapor deposition mask 20 can be formed on the substrate 2 over a wide range of the vapor deposition mask itself.

In the present invention, both the transport mechanism for transporting the substrate 2 and the plating source 1 (or the transport mechanism for transporting the plating source 1 and the substrate 2) are supported by the pillars 7 and 10 provided outside the vacuum chamber 3. The configuration is not affected by the pressure state in the vacuum chamber 3, and the positional relationship between the substrate 2 and the plating source 1 is not changed, and the plating film can be conveyed with high precision.

In other words, the positional relationship between the vapor deposition mask 20 and the plating source 1 is adjusted in the atmospheric pressure space, and the wall surface of the vacuum chamber 3 is deformed by the pressure fluctuation in the vacuum state of the coating chamber. Since the coating source 1 is supported not by the wall surface of the vacuum chamber 3 but by the pillars provided outside the vacuum chamber 3, for example, the pillars 7 and 10 which are erected on the frame 13 of the high rigidity, the conveying mechanism and the coating source are supported. 1. The influence of the deformation of the wall surface of the vacuum chamber 3 is not affected. Therefore, the interval between the substrate 2 and the plating source 1 in the direction perpendicular to the surface to be coated of the substrate 2 does not change due to the above deformation, and the substrate can be replaced. 2 and the positional relationship of the coating source 1 is maintained.

Therefore, according to the present invention, it is not necessary to increase the wall surface or to provide a large number of ribs in order to prevent deformation of the wall surface of the vacuum chamber 3, that is, to prevent the vacuum chamber 3 from being enlarged and weighted, thereby preventing the pressure from being decompressed. The positional relationship between the substrate 2 and the plating source 1 caused by the deformation of the wall surface of the vacuum chamber 3 generated is changed.

Further, the drive source for moving the moving portion 4 of the transport mechanism can transport the substrate with high precision by using, for example, a linear motor.

For example, the moving unit 4 includes an accommodating portion 14 that is filled with the atmosphere in the vacuum chamber 3, and the accommodating portion 14 The atmospheric pressure space outside the vacuum chamber 3 is connected to each other, and the joint portion 15 of the hollow introduction portion that introduces the power supply wiring and the cooling pipe toward the accommodating portion 14 and the adsorption portion 16 that adsorbs the substrate 2 are formed. The movable portion 4 having a high function of the substrate alignment, the power supply mechanism, the cooling mechanism, and the substrate attaching and detaching mechanism can be realized.

The substrate 2 is adsorbed on the substrate 2 of the adsorption unit 16, and the substrate 2 after the adsorption must be aligned in parallel with the guide portion 5, for example, on the reference mark display portion 17 which is aligned in parallel with the guide portion 5. The reference mark is disposed in the conveyance direction of the substrate 2, and the reference mark and the substrate mark formed on the substrate 2 are photographed by the image pickup means, and the positional deviation is appropriately corrected. At this time, the imaging means is, for example, housed in the imaging device accommodating portion 18 of the atmospheric pressure space, and is photographed over the window provided in the wall portion of the imaging device accommodating portion 18.

In addition, the imaging means accommodating portion 18 and the reference mark display portion 17 are disposed on the guide portion 5 or the guide post 7, and are not affected by the deformation of the vacuum chamber 3, so that they are exposed to the atmosphere. The position of the image pickup means and the reference mark display unit 17 that are adjusted in the middle does not change in a vacuum.

[Examples]

Specific embodiments of the invention are illustrated in accordance with the drawings.

In the present embodiment, it is solved that a coating material (for example, an organic material for manufacturing an organic EL device (device)) vaporized from the coating source 1 is deposited on the substrate 2 through the mask opening of the vapor deposition mask 20 to by The vapor deposition mask 20 is formed by forming a film of a plating pattern determined on the substrate 2, and the substrate 2 and the vapor deposition mask 20 are disposed in a separated state, and the substrate 2 is held and vapor-deposited 20 In the separated state, the film can be relatively freely moved, and the film can be formed on the substrate 2 by the relative movement of the vapor deposition mask 20 over a wide range of the vapor deposition mask 20 . The problem in the coating device.

In other words, in the coating apparatus having the above configuration, since the positional relationship between the substrate 2, the vapor deposition mask 20, and the plating source 1 is required to be highly precise, as shown in Fig. 1, the substrate 2 of the guiding and transporting mechanism is The guide portion 5 for moving the moving portion 4 and the base portion 11 holding the coating source 1 are respectively supported by the guide post 7 and the base post 10 which are provided outside the vacuum chamber 3. In the vacuum chamber 3, the positional relationship between the vapor deposition chamber 20, the vapor deposition mask 20, and the plating source 1 is deformed, and the wall surface of the vacuum chamber 3 is deformed by the pressure fluctuation in the vacuum state of the coating chamber, and the substrate 2 is deformed. The positional relationship between the coating source 1 and the coating source 1 does not change, and the substrate can be conveyed with high precision.

Each part will be described in detail.

The guide portion 5 is a linear guide formed by the guide block 22 provided on the lower surface side of the moving portion 4 and the guide rail 23 to which the guide block 22 is fitted, as shown in Figs. And a pair of guiding bases 24 on which the guide rails 23 are disposed.

In the present embodiment, as shown in FIG. 2, the guide post 7 that supports the guide base 24 is provided in a steel material that is erected on the floor provided outside the bottom of the vacuum chamber 3. High rigidity member The gantry 13 passes through the through hole 6 in the bottom surface of the vacuum chamber 3.

The guide wall 7 and the wall surface around the through hole 6 are connected in an airtight state by the elastic member 8 (the bellows 8) provided to cover the guide post 7. Specifically, the lower surface of the large diameter portion 7a of the guide post 7 and the wall surface around the through hole 6 facing the guide post 7 are connected in an airtight state by the bellows 8. Further, instead of guiding the pillars 7, the installation portions of the guide pillars 7, that is, the wall surfaces around the gantry 13 and the through holes 6 may be connected by a bellows 8.

Therefore, even if the outer wall of the vacuum chamber 3 is deformed by evacuating the vacuum chamber 3, the position of the guide post 7 and the guide base 24 is unchanged by the expansion and contraction of the bellows 8 to absorb the deformation. The substrate 2 can be transported with high precision.

As shown in FIG. 3, the plating source 1 includes a host material generating source 1a and a dopant material generating source 1b, and is supported by a base portion 11 in which a mask frame 21 to which a vapor deposition mask 20 is attached is disposed. (base plate 11). The base post 10 supported by the susceptor plate 11 is a plating source aligning mechanism 19 that is erected on the gantry 13 of the floor provided outside the bottom of the vacuum chamber 3, and penetrates the vacuum sump. a through hole 9 on the bottom surface of 3.

Further, the wall surface around the base pillar 10 and the through hole 9 is connected in an airtight state by using the elastic member 12 (the bellows 12) provided to cover the base pillar 10. Specifically, the upper surface of the large diameter portion 10a of the susceptor pillar 10 and the wall surface around the through hole 9 facing the base pillar 10 are connected in an airtight state by the bellows 12. Again, not the pedestal pillar 10, the installation portion of the base post 10, that is, the coating source alignment mechanism 19 and the wall surface around the through hole 9 may be connected by the bellows 12.

Therefore, even if the outer wall of the vacuum chamber 3 is deformed by vacuum evacuation in the vacuum chamber 3, the deformation is absorbed by the expansion and contraction of the bellows 12, and the positions of the base post 10 and the susceptor plate 11 are not changed. The coating source 1 and the mask frame 21 attached to the vapor deposition mask 20 can be aligned with each other with high precision in the substrate 2 during transportation.

Further, the gantry 13 supported by the transport mechanism and the coating source 1 also supports the vacuum chamber 3. Specifically, as shown in FIG. 4, the vacuum chamber 3 and the gantry 13 are connected by a spherical bearing 25 capable of receiving a radial load and an axial load in both directions, so that the vacuum chamber 3 generated by vacuum evacuation The effect of the deformation does not go to the aforementioned gantry 13.

And the driving source of the transport mechanism is to use a linear motor. Therefore, the transportation mechanism having high positioning accuracy, constant speed stability, detergency, and maintainability can be used without any restriction on the stroke required to transport the large substrate 2. Further, when the rotational power of the drive motor provided outside the vacuum chamber 3 is transmitted through the magnetic fluid seal to the ball screw in the vacuum chamber 3 to rotate, the inside and the outside of the vacuum chamber 3 are connected, so that the vacuum is applied. Although the outer wall of the groove 3 is affected by the deformation, the linear motor is a structure in which the drive source is disposed inside the vacuum chamber 3 and can be prevented from being affected by the deformation of the outer wall of the vacuum chamber 3.

Specifically, the moving portion 4 that holds the substrate 2 together with the substrate 2 is disposed along the guiding base as shown in FIGS. 5 and 6 The linear guide movement on the 24 is disposed on the plurality of magnets 27 attached to the bracket 26 on the inner side surface of the guide base 24, and the coil unit 28 attached to the moving portion 4 side. Between, let the thrust happen.

Further, as shown in FIGS. 6 and 7, the moving unit 4 is provided with an accommodating portion 14 having an atmospheric pressure space in the vacuum chamber 3, and an atmospheric pressure space outside the accommodating portion 14 and the vacuum chamber 3, and is formed with electric power. The joint portion 15 of the hollow introduction portion introduced into the accommodating portion 14 by the supply wiring and the cooling pipe, and the adsorption portion 16 that adsorbs and holds the substrate 2 are provided.

The adsorption unit 16 is configured such that the electrostatic chuck 31 is divided and disposed in a plurality of stages on the stage base 30, and the substrate 2 is adsorbed on the surface of the electrostatic chuck 31. Further, a support 32 that supports the stage base 30 through the through hole 34 that penetrates the bottom surface of the accommodating portion 14 is provided. Further, the wall surface around the through hole 34 of the stage base 30 and the accommodating portion 14 is connected in an airtight state by the elastic member 33 (the bellows 33) provided by the support 32, and the atmosphere and the vacuum are applied. Maintained in an airtight state. Further, the wall surfaces of the pillars 32 and the through holes 34 may be connected to each other by the bellows 33.

Further, the substrate alignment mechanism has a servo motor, and since it cannot be disposed in a vacuum environment, it is usually disposed under the atmospheric pressure of the outside of the vacuum chamber 3 (on the vacuum chamber 3 when the deposit is lowered), so that the vacuum chamber 3 is provided. The deformation does not affect the accuracy of the alignment to increase the rigidity. However, in the present embodiment, the substrate moving means 29 for moving the stage base 30 by the operation of the support post 32 of the substrate alignment mechanism is provided in the accommodating portion 14, so that the deformation of the vacuum chamber 3 is not affected. Affect the substrate alignment Therefore, the vacuum chamber 3 does not require high rigidity and can be lightweight.

Further, the accommodating portion 14 has a structure that needs to be highly rigid, so that the deformation caused by the pressure difference between the atmosphere and the vacuum does not affect the substrate aligning mechanism, but since it is small in volume compared with the vacuum chamber 3, it can be made of light such as aluminum. Since the number of members is produced, the entire device can be lightweight and low-cost, and it is not required to be increased in size and weight, and can be made into a highly rigid structure.

The power supply to the motor for the substrate alignment mechanism, the coil unit of the linear motor, and the electrostatic chuck 31 in the accommodating portion 14 is to introduce the wiring through the hollow portion of the joint portion 15 from the power source in the air space outside the vacuum chamber 3. Conducted in part. Specifically, the joint portion 15 is a link mechanism that serves as a hollow structure for following the movement of the accommodating portion 14, and this hollow portion serves as a hollow introduction portion. Similarly, in the motor, the coil unit, and the stage base 30 that require cooling, air or a water-cooled pipe is disposed through the hollow introduction portion of the joint portion 15 from the air space outside the vacuum chamber 3.

In the joint portion 15, the outer wall of the vacuum chamber 3 and the accommodating portion 14 are connected, and when the vacuum chamber 3 is bent by vacuum exhaust, the driving operation and airtightness of the joint portion 15 are affected, and further, the accommodating portion 14 is also provided. Since the load also affects the high-precision conveyance of the substrate 2, the elastic member 35 (the bellows 35) is disposed between the vacuum chamber 3 and the joint portion 15, and the influence of the deformation of the vacuum chamber 3 is alleviated. Specifically, the wall surface around the through hole 36 of the vacuum chamber 3 and the one end portion of the joint portion 15 are connected in an airtight state by the bellows 35. Further, a bellows 35 may be disposed between the other end portion of the joint portion 15 and the accommodating portion 14.

The substrate 2 adsorbed on the adsorption portion 16 is not for the linear guide When the substrate 2 and the vapor deposition mask 20 are not allowed to move relative to each other, the linear pattern to be coated is coated on the substrate 2 at a desired position. Therefore, the substrate 2 after adsorption must be straight. The guiding position is aligned.

Here, in the present embodiment, a substrate alignment mechanism that positions the substrate 2 against the guiding portion 5 is provided. The substrate alignment mechanism includes a substrate moving device 29 that is disposed in the housing portion 14 to move the adsorption portion 16, and is disposed in parallel with the guiding portion 5 and is provided with a reference mark in the transparent portion 39. The reference symbol display unit 17 and the imaging means for imaging the reference mark and the substrate mark provided on the substrate 2, and the operation means for actuating the substrate moving means 29 based on the imaging result, and the imaging means for accommodating the imaging means Part 18.

Specifically, the reference mark formed on the reference mark display portion 17 aligned in parallel with the linear guide is disposed at least two or more in the conveyance direction of the substrate 2, and is imaged by an imaging means such as a CCD camera 37. The reference mark and the substrate mark formed on the substrate 2 are photographed. At this time, since the imaging means cannot be directly disposed in the vacuum, the imaging means accommodating portion 18 accommodated in the atmospheric pressure space is photographed over the window 38 of the imaging device accommodating portion 18.

The substrate mark of the substrate 2 is adsorbed so that the reference mark has a predetermined positional relationship, and the adsorption unit 16 is moved by the substrate moving means 29 to perform positional alignment, and the substrate 2 can be guided parallel to the straight line without being inclined. Being carried.

And the imaging device storage unit 18 and the reference symbol display unit 17, It is an imaging means that is mechanically independent from the vacuum chamber 3 by at least one of the guide base 24 or the guide post 7 and is not affected by the deformation of the vacuum chamber 3, and is adjusted in the atmosphere. The position of the reference mark display unit 17 is configured so as not to change in a vacuum, thereby preventing deterioration in alignment accuracy. In the present embodiment, it is configured to be disposed on the guide base 24.

In the present embodiment, the case where the substrate 2 is transported by the transport mechanism has been described. However, the case where the coating source 1 is transported by the transport mechanism is also the same. Further, in the present embodiment, the case where the vapor deposition mask 20 is used has been described, but the same applies to the case where the vapor deposition mask is not used.

In the present embodiment, the struts 7 and 10 are erected on the gantry 13. However, if the rigidity is ensured, the gantry 13 is not provided, and the struts 7 and 10 may be directly provided on the floor of the coating device. .

In the present embodiment, the substrate 2 is not limited to the glass substrate 2, and the film can be coated with high precision even when the flexible substrate 2 (for example, a sheet-like plastic film) is applied.

Further, the present embodiment is not limited to vacuum vapor deposition, and can be widely applied to a CVD and a splash device having the vacuum chamber 3.

1‧‧‧ coating source

3‧‧‧vacuum tank

5‧‧‧Guide

7‧‧‧ Guide pillar

10‧‧‧Base pillar

13‧‧‧ 台台

Claims (12)

A coating apparatus comprising a vacuum chamber for forming a thin film on a substrate by depositing a plating material which is emitted from a plating source, and comprising: a transport mechanism for transporting the substrate or the plating source; The mechanism is composed of a moving portion and a guiding portion for guiding the movement of the moving portion. The guiding portion is formed outside the vacuum chamber and supported to penetrate through a wall surface of the vacuum chamber. The guide post of the upper through hole is configured such that the guide post or the installation portion of the guide post and the wall surface around the through hole are connected to the telescopic member in an airtight state, and the transport mechanism is used to In the case of the substrate transporting, the plating source is formed in a base portion of the susceptor pillar that is provided outside the vacuum chamber and that is held by the through hole that is supported through the wall surface provided on the vacuum chamber. The base post or the installation portion of the base post and the wall surface around the through hole are connected to the telescopic member in an airtight state, and the coating source is transported by the transport mechanism. In this case, the holding portion that holds the substrate is a base portion that is provided outside the vacuum chamber and that is held by the base portion of the susceptor that is supported by the through hole provided in the wall surface of the vacuum chamber. The base post or the installation portion of the base post and the wall surface around the through hole are connected to the telescopic member in an airtight state, and the transport mechanism and the plating source or the substrate are not affected by the vacuum chamber. The influence of the deformation of the wall surface caused by the pressure reduction is configured such that the positional relationship between the plating source and the substrate is maintained, and the guiding portion is configured to extend in the moving direction of the moving portion, and the guiding pillar is along The moving side of the aforementioned moving part Set to plural. A coating apparatus is a coating apparatus having a vacuum chamber in which a coating material which is emitted from a coating source is passed through a mask opening of a vapor deposition mask and which is deposited on a substrate to form a thin film on the substrate, and is characterized in that the substrate or the substrate is provided It is a transport mechanism for transporting the coating source, and the transport mechanism is configured by a moving portion and a guiding portion for guiding the movement of the moving portion. The guiding portion is formed outside the vacuum chamber and is a guide post that is supported in a through hole provided in a wall surface of the vacuum chamber, and the guide post or the installation portion of the guide post and the wall surface around the through hole are transmitted through the telescopic member in an airtight manner In the case where the substrate is transported by the transport mechanism, the plating source is provided outside the vacuum chamber and held in a through hole supported through a wall surface of the vacuum chamber. The base portion of the base pillar is configured such that the base pillar or the installation portion of the base pillar and the wall surface around the through hole are connected to the telescopic member in an airtight state. In the case where the transporting means transports the coating source, the holding portion that holds the substrate is provided outside the vacuum chamber and is held in a through hole that is supported to pass through a wall surface provided on the vacuum chamber. a base portion of the base post, wherein the base post or the installation portion of the base post and the wall surface around the through hole are connected to the telescopic member in an airtight state, and the transport mechanism and the coating source are The substrate is configured such that the positional relationship between the plating source and the substrate is maintained without being affected by the deformation of the wall surface caused by the pressure reduction of the vacuum chamber, and the guiding portion is extended toward the moving direction of the moving portion. Method composition, the aforementioned guidance The pillars are provided in plural along the moving direction of the moving portion. The coating device according to the first aspect of the invention, wherein the guide portion for moving the moving portion that holds the substrate of the transport mechanism is supported by the guide post, and the above-described guide post is held The base portion of the coating source is configured to be supported by the base post. The coating device according to the second aspect of the invention, wherein the guide portion for moving the moving portion that guides the substrate of the transport mechanism is supported by the guide post, and the The base portion of the coating source is configured to be supported by the base post. The coating apparatus according to the second or fourth aspect of the invention, wherein the substrate and the vapor deposition mask are disposed in a separated state, and the substrate is relatively movable to the vapor deposition mask, thereby thereby The movement is configured such that a film of a plating pattern determined by the vapor deposition mask is formed on the substrate over a wide range of the vapor deposition mask. The coating apparatus according to claim 1 or 2, wherein the guide post or the base post is erected on a gantry provided outside the bottom of the vacuum chamber, and the guide post is penetrated The through hole or the through hole through which the base post penetrates is provided on a bottom surface of the vacuum chamber. A coating apparatus according to claim 1 or 2, wherein the conveying mechanism is provided with a linear motor that moves the moving portion. For example, the coating device of claim 1 or 2, wherein The moving portion includes an accommodating portion that is filled with the atmosphere in the vacuum chamber, and an atmospheric pressure space outside the accommodating portion and the vacuum chamber, and the power supply wiring and the cooling pipe are formed toward the accommodating portion. The joint portion of the introduced hollow introduction portion and the adsorption portion that adsorbs and holds the substrate. The coating apparatus according to the eighth aspect of the invention, further comprising: a substrate alignment mechanism for aligning the substrate with respect to the position of the guiding portion, the substrate alignment mechanism having: the adsorption portion disposed in the housing portion a substrate moving means for moving the portion, a reference mark display portion provided with the reference mark in parallel with the guide portion, and an imaging means for imaging the substrate mark provided on the reference mark and the substrate, and The imaging result is an operation means for actuating the substrate moving means, and an imaging means housing portion for housing the imaging means. The coating apparatus according to claim 9, wherein the imaging means and the reference mark display unit are disposed on one of the guiding portion or the guiding post, and the vacuum chamber is mechanical The ground is set independently. The coating apparatus according to claim 1 or 2, further comprising a coating source alignment means for aligning the plating source with respect to the substrate position. The coating apparatus according to claim 1 or 2, wherein the coating material is an organic material.