JP2000237661A - Apparatus for applying coating material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make optimally changeable the shape of a coating material on a member to be coated at a time of the application of a frit glass or a paste material. SOLUTION: A CPU 20 issues a command to a coating material discharge nozzle angle adjusting part 31 on the basis of the data inputted from an I/F part 21. The coating material discharge nozzle angle adjusting part 31 changes the angle of a coating discharge nozzle on the basis of this command. At this time, when the coating material discharge nozzle 14 is set so as to have a certain angle with respect to the member 16 to be coated arranged on a stage 17, the coating material discharged from the coating material discharge nozzle 14 can take the optimum shape with respect to the member 16 to be coated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating material application apparatus used for applying a frit glass mixture or a paste material. In particular, when forming an image device having a member to be coated having a flat surface or a similar structure, for example, a frit glass mixture and a paste material are applied to seal two types of image device forming substrates. The present invention relates to a coating material coating apparatus for performing the above.

[0002]

2. Description of the Related Art Conventionally, a coating apparatus for applying such frit glass or paste material includes a stage for holding a member to be coated, and moves a dispenser and the stage relatively to each other to place a frit on the member to be coated. A local heating mechanism for applying a glass or paste material and drying and solidifying the frit glass or the paste material on a member to be applied has been provided. In the conventional coating apparatus, the heating mechanism may be on a spot or in a line.

Next, FIG. 6 shows such a conventional coating apparatus, which will be described. As shown in FIG. 6, a coating apparatus according to the related art includes a stage 5 for holding a member 4 to be coated in a horizontal plane, a stage driving mechanism 6 for moving the stage 5 in a three-dimensional direction in a horizontal plane, and a stage driving mechanism 6. , A dispenser 3 in which a frit 1 as a paste material is filled in a fringe, an air hose 9 for blowing air into a fringe of the dispenser 3, and a frit 1 discharged from the needle 2. Dispenser controller 1 for controlling volume
0, an ultrasonic vibration mechanism 7 for applying ultrasonic vibration to the frit 1, an ultrasonic generation power supply 11 for generating ultrasonic waves to the ultrasonic vibration mechanism 7, and concentrated operations such as vibration and ultrasonic vibration And a computer 12 for control. The dispenser 3 is fixed above the stage 5 such that the mouth of the needle 2 serving as a discharge port faces the member 4 to be coated. The end of the air hose 9 is fixed to the upper end of the dispenser 3. The dispenser controller 10 adjusts the amount by adjusting the air sent through the air hose 9. The ultrasonic vibration mechanism 7 is disposed in the frit 1 in the dispenser 3 and applies ultrasonic vibration.

In FIG. 6, a substrate of an image forming apparatus as a member to be coated 4 is disposed on a stage 5 below a dispenser 3 having a needle 2 for discharging a frit 1. The stage 5 can be freely driven in the XYZ directions by a stage drive mechanism 6. The frit 1 discharged from the needle 2 can be applied in an arbitrary shape on a horizontal plane. The stage drive mechanism 6 is controlled by the drive control unit 8, and the discharge of the frit 1 is performed by controlling the air supplied from the air hose 9 by the dispenser controller 10 in the dispenser 3.

[0005]

In a coating material coating apparatus, when a frit is filled in a dispenser, the discharged frit is often a viscous non-drying paste at room temperature. Therefore, the frit does not immediately solidify on the surface of the member to be coated, so that the frit tends to spill and spread, so that the height becomes considerably lower than the width. Therefore, as a conventional technique, when a frit is applied to a member to be coated on a stage, the paste material on the member to be coated is dried and solidified to prevent dripping of the paste. Further, a local heating mechanism has been provided so that the coating material can be overcoated.

Usually, after the frit glass or the paste material is applied to the member to be applied on the stage, the frit glass or the paste material is fired in a firing furnace to be completely dried and solidified. In PDP or other similar flat display panels, there is a step of bonding a substrate as a member to be coated. At this time, it is necessary to bond the substrate as a member to be coated in an optimal state. For that purpose, frit glass or a paste material for sealing this is fired in an optimal state, that is, in a shape that can seal the bonded substrate as an applied member in an optimal state. Is required.

Therefore, the shape of the frit glass or the paste material immediately after being applied to the member to be coated is finally changed after firing, that is, the shape of the frit glass or the paste material after bonding the substrate as the member to be coated. It is necessary to judge from the judgment. In addition, when frit glass or paste material is applied, as described above as a conventional technique, a conventional coating machine applies to a substrate as a member to be coated,
A needle is placed vertically and frit glass or paste material is applied from the needle. Therefore, even if the frit glass or paste material is dried and solidified,
Immediately after the frit glass or the paste material is applied to the substrate as the member to be applied from the vertical direction, the frit glass or the paste material is physically applied to the substrate as the member to be applied. It is difficult to avoid drooling in the horizontal direction, that is, in the XY directions. This will be described with reference to FIGS.

As shown in FIG. 7, consider a case where the frit glass 1 or the paste material is applied onto a substrate which is a member 4 to be applied, which is disposed on a stage. Since the needle for discharging the frit glass or the paste material is positioned perpendicular to the substrate as the member to be coated, FIG.
As shown in (1), the frit glass or the paste material has a semicircular shape at a position where the frit glass or the paste material is applied on the substrate as the member to be applied. Then, the frit glass or the paste material is completely dried and solidified. For example, in order to completely seal a substrate as a member to be coated and an image substrate for forming an image device such as a flat display, a baking process is performed. In this firing step, as shown in FIG. 8, the frit glass or paste material after application tends to sag in the lateral direction, and it is not easy to prevent this loosening.

In addition, the shape of the applied frit glass or paste material after firing is examined, and the shape of the frit glass or paste material at the time of application is, for example, not on a semicircle with respect to the surface of the member to be applied. It may be desirable to apply in a state close to a circle. However, in the related art, since the needle for applying the frit glass or the paste material is fixed vertically to the surface of the member to be applied, the shape of the frit glass or the paste material immediately after the application is semicircular. Inevitably, it is difficult to change the shape of the applied material such as frit glass or paste material immediately after application. Therefore, it is very difficult to optimize the shape of the frit glass or the paste material after firing. In addition, for example, in a flat display, a member to be coated such as a substrate for forming an image device usually has, on the entire surface thereof, undulations and the like, which may partially occur.
In this case, due to the undulation, the application conditions of the application material change, and uniform application may not be performed.

[0010] Also, due to vibration by an ultrasonic mechanism or the like,
Even if the clogging of the coating material such as frit glass or paste material is prevented, the needle makes the pressure of the coating material uniform over the entire surface in the discharge port cross section when the coating material is discharged from the discharge port due to its shape. It is difficult.

[0011] Finally, the frit glass or the paste material is completely dried and solidified by sintering. In some cases, the application material such as the frit glass or the paste material is applied and then locally dried and solidified. . In this case, in order to apply the frit glass or the paste material around the member to be applied, it is necessary to apply the frit glass or the paste material while moving the dispenser along the periphery of the member to be applied. However, even if the frit glass or the paste material immediately after being applied can be dried to some extent by the local drying mechanism at that time, the dispenser moves to another position at the next moment, so the applied frit glass or paste material is used. Alternatively, it is difficult to sufficiently dry-solidify the paste material. Therefore, it is difficult to uniformly dry and solidify the frit glass or the paste material to be finally applied to the periphery of the member to be applied.

In view of the above-mentioned problems of the prior art, it is an object of the present invention to apply a frit glass or a paste material so that the applied material can be changed to an optimum shape on a member to be applied. It is to provide a device. Another object of the present invention is to provide a coating material coating apparatus capable of uniformly discharging a coating material when the coating material is discharged from a discharge port. Still another object of the present invention is to provide a coating material coating apparatus capable of uniformly drying and solidifying a coated coating material until the coating is completed.

[0013]

According to the first aspect of the present invention, there is provided a dispenser for discharging a coating material onto a member to be coated,
A coating material coating apparatus includes a stage for fixing a member to be coated, a dispenser driving system for driving a dispenser, a stage driving system for driving the stage, and a control unit for controlling each unit. The dispenser includes a discharge port angle adjustment unit that can change an angle of a coating material discharge port provided at a lower end with respect to a member to be coated, and the control unit controls the coating material discharged from the dispenser to a desired shape. Preferably, the angle of the coating material discharge port with respect to the member to be coated is adjusted by a discharge port angle adjustment unit.

According to a second aspect of the present invention, there is provided the coating material applying apparatus according to the first aspect, wherein the dispenser is provided at a lower portion thereof.
A coating member surface inspection unit for inspecting a surface state of each position on the surface of the member to be coated is provided, and the control unit causes the surface inspection unit of the coating member to inspect a surface state of a coating position of the member to be coated in advance. The discharge port angle is adjusted by the discharge port angle adjustment section based on the surface state information.

According to a third aspect of the present invention, there is provided the coating material coating apparatus according to the first or second aspect, wherein the dispenser comprises:
The discharge port is characterized in that the tip is tapered.

According to a fourth aspect of the present invention, there is provided the coating material coating apparatus according to any one of the first to third aspects, wherein the coating material drying mechanism is movable vertically and horizontally, and the coating material drying mechanism is provided in the coating material drying mechanism. A coating material drying gas supply port for blowing out a drying gas; and a position sensing unit for sensing a position of the coating material on the member to be coated, wherein the control unit controls the coating applied to the member to be coated by the position sensing unit. Detecting the position of the material, moving the coating material drying gas supply port to a position suitable for drying the coating material by the coating material drying mechanism, and uniformly drying and solidifying the coated coating material until the coating is completed. Can be.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing one embodiment of a coating material coating apparatus according to the present invention.
The coating material coating apparatus includes a dispenser 15, a stage 17 for fixing a member to be coated, and a stage 1.
A stage driving mechanism 18 capable of driving the device 7 itself, an X-axis driving system 26, a Y-axis driving system 27, and a Z-axis that can arbitrarily move the dispenser 15 on the stage in the X-axis, Y-axis, and Z-axis directions. The drive system 28, the X-axis drive control unit 22, the Y-axis drive control unit 23, and the Z-axis drive control unit 24 that control these drive systems, and the dispenser 15 described above are applied to a member to be coated fixed on a stage. A shaft rotation drive system 29 for rotating the shaft arbitrarily, a shaft rotation drive control unit 25 for controlling the shaft rotation drive system 29, an I / F unit 21 for inputting / outputting data, and controlling the entire apparatus. A CPU 20 that performs
The application condition storage device 35 stores application condition data. Further, the coating material coating apparatus also includes a coating material drying mechanism, which will be described in detail later.

The dispenser 15 has a coating material discharge unit 14 for discharging the coating material, a coating material injection port 33 for injecting a coating material such as frit glass or a paste material, and a coating material injection port 33 which is injected from the coating material injection port 33. A coating material injection pressure adjusting unit 32 for applying an appropriate pressure to the frit glass or the paste material, and a coating material solidification preventing mechanism 19 for preventing the injected coating material from solidifying and adjusting the viscosity.
And a power supply 3 for supplying a current to the coating material solidification preventing mechanism 19.
0, a coating material discharge pressure adjusting unit 34 for adjusting the discharge pressure for discharging the frit glass or the paste material, a coating material discharge port 38 for discharging the frit glass or the paste material, and disposed on the stage. A coating member surface inspection mechanism 36 for inspecting the state of the coating member surface; a coating material discharge port angle adjusting unit 31 for adjusting the angle of the coating material discharge port 38 with respect to the coating member 16 for applying the frit glass or the paste material; It is the structure which consists of.

In this embodiment, any data can be set from the IN side of the I / F unit 21 shown in FIG. 1, but this data is stored in the CPU 2 connected to the I / F unit 21.
0 immediately. The CPU 20 controls the driving status of each control unit based on this data. I /
The F section 21 has a built-in display function, and is structured as an interactive machine. Therefore, the I / F unit 2
Each time data is input from the IN side, the conditions to be set and the order are sequentially displayed by the display function, and the person who inputs the data may input the necessary data according to the display. In addition, as a matter of course, if you input data by mistake, you can reset the input data or return to the previous setting, and read the instruction manual or product specification etc. There is no need to input setting data while checking the setting method, setting order, and the like at hand. for that reason,
Data entry is very easy, and necessary data can be set immediately, so that work can be performed quickly.

The data input to the I / F unit 21 is
For example, it is as follows. Here, a case is assumed in which a coating material 13 such as frit glass or a paste material is applied to a member 16 to be coated such as a substrate for forming an image device arranged on a stage 17. The movement start position of the dispenser 15, which is set before the application of the application material 13 by the dispenser 15 is started, that is, the zero point is set, and the dispenser 15 in the X direction is set.
Moving speed and moving distance of the dispenser 15 after the dispenser 15 starts to apply the coating material in the X direction,
The time from the movement in the Y direction to the movement in the Y direction after the movement from the X direction to the Y direction, the movement speed and the movement distance in the Y direction from the X direction to the Y direction. Distance between the member to be coated 16 such as a substrate for forming an image device and the like, which is to be set apart from the member to be coated The coating material injection pressure in the coating material injection pressure adjusting unit 32 The coating material 13 for the coating material solidification preventing mechanism 19 For Preventing Solidification of Coating Material 1 on Stage 17 of Coating Material Discharge Section 14
Transfer data to the coating material discharge port angle adjustment unit 31 to set the angle with respect to 6 Transfer data to the coating material discharge pressure adjustment unit 34 to adjust the discharge pressure when the coating material 13 is discharged Data for setting how far the unit 14 is to be ejected from the member 16 disposed on the stage 17 to discharge the coating material, that is, for setting how much the dispenser is moved in the Z direction. data from

However, it is not necessary to change the above-mentioned data each time, and if the application conditions are the same as the previous one, the previous data can be used as it is. The data input from the I / F unit 21 is stored in the application condition storage device 35 connected to the CPU 20. The application condition storage device 35 can store a plurality of application material application conditions. When applying the application material, the user can select his / her desired application condition data from the application condition data stored in the application material storage device 35. Can be called arbitrarily. In this way, I / F
CPU 2 based on data arbitrarily input from unit 21
0 denotes drive control units 22 to 2 in the X-axis, Y-axis, and Z-axis directions.
5. Control the drive systems 26 to 29 and other control units.

For example, when applying the coating material 13 in the X direction to the member 16 to be coated disposed on the stage 17, the CPU 20 issues a command to the X-axis drive control unit 22 based on the data described above. Soup Based on this command, the X-axis drive control unit 22 drives the X-axis drive system 26 to satisfy the application speed and the application distance of the application material 13 in the X direction on the member 16 to be applied. That is, the X-axis drive control unit 22
However, a command relating to the moving speed and the moving distance of the dispenser 15 in the X direction viewed from the dispenser 15 is sent to the X-axis drive system 26 to be controlled. Stage 1
When applying the coating material 13 in the Y direction to the member 16 to be coated arranged on the
0 sends a command to the Y-axis drive control unit 23, the Y-axis drive control unit 23 controls the Y-axis drive system 27, and the dispenser 15 moves the coating target member 16 disposed on the stage 17.
Is driven in the Y direction. At this time, the moving speed and the moving distance are determined by the Y-axis drive
7 based on the data sent.

Next, the operation of this embodiment will be described with reference to FIG. First, the coating material 1 is applied to the member 16 to be coated.
When applying No. 3, data is input to the IN side of the I / F unit 21 as described above, or data that has already been input is read. At this time, the data that has already been input as the previous application condition data is stored in the application condition storage device 35, and is set by the setting of the I / F unit 21.
The PU 20 reads data from the application condition storage device 35 and issues a command to each control unit and each adjustment unit based on the data.

First, when applying the coating material 13 to the member 16 to be coated placed on the stage 17, first, the CP
U20 is the member 16 to be coated arranged on the stage 17.
In order to optimize the angle of the coating material discharge section 14 with respect to the
The surface condition of the member 16 to be coated disposed above is inspected.

The member to be coated surface inspection mechanism 36
The method for inspecting the surface of the member to be coated is described below. CPU 20
Detects the zero position of the coating position of the coating material 13 on the member 16 based on the data set in the I / F unit 21, and uses the zero position as a starting point to determine the X position of the member 16
In order to inspect the surface state in the direction, first, a command is issued to the X-axis drive control unit 22. The X-axis drive control unit 22 issues a drive signal to the X-axis drive system 26 and The dispenser 15 is moved in the X direction of the member 16 to be applied. At this time, the member-to-be-applied surface inspection mechanism 36 installed below the dispenser 15 and near the coating material discharge pressure adjusting unit 34 is dispensed with the dispenser 15.
While the device moves in the X direction of the member 16 arranged on the stage 17, it detects the state of the surface of the member 16 such as undulation and warpage, and transfers the data to the CPU 20. At this time, a method of detecting the undulation or warpage of the surface of the member 16 to be coated is, for example, by mounting a CCD camera and a light source inside the above-described member inspection surface 36, and the light emitted from the light source is Stage 1 below member 16 to be coated
7 is detected by the CCD camera and passes through the member to be coated 16, and the data is transferred to the CPU 20.
The PU 20 detects undulation and warpage of the member 16 itself from the refractive index of light. Based on the detected data, the CPU 20 grasps the undulation and warpage of each point of the member 16 to be coated, and stores the data in the coating condition storage device 35. Although the surface inspection in the X direction from the zero position has been described, similarly, the surface condition is inspected at other application positions, and the data is stored in the application condition storage device 35.

Next, based on the data set by the I / F unit 21, the CPU 20 sets the coating distance in the X-axis direction according to the coating conditions set by the I / F unit 21.
In order to apply the coating material 13 in the X direction, a command is issued to the X-axis drive control unit 22. The X-axis drive control unit 22 includes a CPU
The X-axis drive system 26 is driven based on a command from the controller 20 to move the dispenser 15 in the X-axis direction. Therefore, the application material 13 is applied in the X direction of the application member 16 arranged on the stage 17.

At this time, the CPU 20 transmits data such as undulation and warpage of each position of the member 16 to be coated, which has been detected earlier.
The application material 13 is read out from the application condition storage device 35, and the application of the application material 13 to the surface of the member 16 is optimally performed according to the data. That is, the coating material discharge port 3 at each position
8 from the member to be coated 16 is adjusted, and the member to be coated 1 is adjusted.
The height of the dispenser 15 in the Z direction is delicately controlled so that the height of the coating material on 6 does not vary at each position. Therefore, a command is sent to the Z-axis drive control unit 24 each time, and the Z-axis drive system 28 is delicately driven so that the height of the coating material on the member 16 to be coated does not vary at each position. .

At the same time, the CPU 20 controls the coating material discharging section 1
When the coating material is discharged from the coating material 4 onto the member 16 to be coated, a command is also sent to the coating material discharge port angle adjusting unit 31 so that the height of the coating material 13 does not vary on the member 16 to be coated. By delicately driving the material discharge port angle adjustment unit 31, the application state of the application material can be optimized. At this time, usually, when applying the coating material to the member 16 such as a substrate for forming an image apparatus, the coating material is sequentially applied in the XY directions.
Accordingly, while the dispenser 15 is moving on the stage 17 in the X direction, the Y-axis drive system 27 does not move the dispenser 15 in the Y direction. Thus, the CPU 20
However, the Z-axis drive system and the application material discharge port angle adjusting unit 31 are driven in combination to control the height so that there is no variation.

However, regarding this, the I / F unit 21
By inputting data from the N side, the frit glass is placed not on the periphery of the member 16 to be coated such as a substrate for forming an image device, but at an arbitrary position of the member 16 to be coated such as a substrate for an image device formed on the stage 17. Alternatively, a coating material such as a paste material can be applied. That is, I / F
It is also possible to apply the application material 13 to an arbitrary position of the application member 16 in a test on the basis of the data input from the unit 21. Therefore, it is easy to set a very wide range of application conditions for the application material on the application target 16 arranged on the stage 17.

When applying the coating material in the X direction, the CPU 20 sends a command to the coating material discharge port angle adjusting unit 31 based on the data input from the I / F unit 21. The coating material discharge port angle adjusting unit 31 changes the angle of the coating material discharge port based on this command. At this time, if the angle of the coating material discharge port 14 is set to have a certain angle with respect to the member 16 to be coated arranged on the stage 17, the coating material discharged from the coating material discharge port 14 will As described above, the member 16 to be applied has a shape such that the cross-sectional shape is a column. The coating material 13 often has a problem of sagging after coating. However, in the present embodiment, as described above, the coating material 13 has a columnar shape as described above. It becomes a sagging shape like the lower part of the cross section of the material.

As shown in FIG. 8, it is clear that the sagging shape in the prior art is larger in the lateral direction than in the present embodiment.
The fact that the cross section of the coating material after application can be set as shown in FIG. 2 according to 1 is very advantageous in preventing the coating material 13 after application from dripping.

The CPU 20 controls the coating material discharge port angle adjusting unit 31 based on the surface condition (undulations, etc.) of the coating position while holding the discharge port at a predetermined angle by the coating material discharge port angle adjusting unit 31. To prevent the above-described variation in height, and at the same time, optimize the application state of the application material so that the cross section of the application material after application has a predetermined shape.

Next, the application of the coating material when shifting from the X direction to the Y direction will be described. After application in the X direction is completed,
Next, when applying the coating material 13 in the Y direction to the member 16 to be coated arranged on the stage 17, the CPU 2
A value of 0 determines from the data input from the I / F unit 21 whether the timing of shifting from the X direction to the Y direction, that is, whether the application distance of the application material 13 in the set X direction has passed. When the distance in the X direction is reached, the I / F
Based on the data set by the unit 21, how much time and how many times the dispenser 15 is rotated are calculated,
A command is sent to the shaft rotation drive control unit 25 to drive the shaft rotation drive system 29 connected thereto. By rotating the dispenser 15 under appropriate conditions when shifting from the X direction to the Y direction, even if the application direction of the coating material shifts from the X direction to the Y direction, the coating material disposed on the stage 17 can be moved. The shape of the coating material on the member 16 is not changed.

Next, when the application direction of the application material has been shifted from the X direction to the Y direction as described above, the CPU 20 sets the stage 1 among the application condition data stored in the application condition storage device 35.
The application material application conditions in the Y direction of the member 16 to be applied arranged on 7 are read. Next, a command is issued to the Y-axis drive control unit 23 regarding the dispenser moving condition in the Y direction. The Y-axis drive control section 23 controls the Y-axis connected thereto.
A signal for driving the dispenser 15 in the Y-axis direction is sent to the shaft drive system 27 based on a command from the CPU 20. The Y-axis drive system 27 moves the dispenser 15 in the Y direction based on this signal.
The coating material 13 is applied in the Y direction to the member 16 to be applied disposed on the upper surface 7.

During the application of the coating material 13 in the Y direction, the CPU 20 determines the swell of each position of the member 16 to be applied, which is detected earlier, as in the case of applying the coating material 13 in the X direction. The surface condition data in the Y direction of the member 16 to be coated is stored in the coating condition storage device 35 from data such as warpage.
And the application of the application material 13 to the surface of the application target member 16 is optimally performed according to the data. That is,
The distance of the coating material discharge port 38 from the member 16 to be coated at each position is adjusted, and the height of the coating material 13 on the member 16 to be coated is adjusted in the Z direction of the dispenser 15 so that the height does not vary at each position. The height is delicately controlled. For this control, the CPU 20 sends a command to the Z-axis drive control unit 24 each time to delicately drive the Z-axis drive system 28 so that the height of the coating material on the member 16 to be applied varies at each position. I try not to connect. As described above, when the application direction of the application material 13 shifts from the Y direction to the X direction again,
As in the case of shifting from the direction to the Y direction, the CPU 20 issues a command to a necessary control unit to move the dispenser 15 under optimal conditions.

As described above, in the present embodiment, when the member 16 such as a substrate for forming an image apparatus is disposed on the stage 17, the coating material 13 in the XY direction of the member 16 Can be optimized with respect to the application of In addition, the present embodiment has a stage driving mechanism 18 that can drive the stage 17 itself,
When a failure occurs in the apparatus, the stage 1 of the member 16 to be coated is
When positioning on the stage 7 is difficult, the stage driving mechanism 18 can be driven to set the position of the stage 17 to an arbitrary position.

As mentioned above, the method of driving the dispenser 15 for applying the coating material 13 in the present embodiment, in which the coating material 13 is coated on the member 16 to be coated under optimum conditions, has been described in detail. Next, the functions built into the dispenser will be described. In the embodiment shown in FIG. 1, a coating material 1 such as frit glass or a paste material is used.
3 is injected into the dispenser 15, the coating material 13 is injected from the coating material injection port 33. When the coating material 13 is injected from the coating material injection port 33, the coating material injection pressure adjusting unit 32 sends out the coating material 13 such as frit glass or paste material to the lower part of the dispenser 15 based on a command from the CPU 20. A suitable pressure is applied to the injected coating material. At this time, the command from the CPU 20 is based on the data input from the I / F unit 21. However, if the ambient temperature and humidity around the coating material coating apparatus are input from the I / F unit 21, The CPU 20
Based on the data, the application material injection pressure can be further optimally set.

The coating material injected from the coating material injection port 33 is sent to the coating material solidification preventing mechanism 19 installed below the coating material injection port 33. Here, the injected coating material is dried. For this reason, drying is performed at an appropriate temperature, or vibration is applied to prevent solidification or generation of air bubbles. The drying and the vibration may be realized by a heater, an ultrasonic vibrator or the like, respectively. Further, in the present embodiment shown in FIG. 1, a power supply 30 for the coating material solidification prevention mechanism is built in as the coating material solidification prevention mechanism 19, and a separate power supply is not required.

Further, in the present embodiment shown in FIG. 1, the application material injected from the application material injection port 33 is discharged from the application material discharge section 14 at an appropriate pressure.
20 sets the discharge pressure of the coating material 13 discharged from the coating material discharge unit 14 based on the data set by the I / F unit 21, and sets the coating material discharge pressure adjustment unit 34 according to the discharge pressure. Send the order. The coating material discharge pressure adjusting unit 34 includes:
According to the discharge pressure, the coating material 1
3 is discharged. As mentioned above,
In the present embodiment shown in FIG. 1, for example, when applying a coating material to the member 16 to be coated such as a substrate for forming an image device, it is possible to apply the optimum condition coating material.

Next, the coating material discharging section 14 of the coating material coating apparatus according to the present embodiment will be described. As shown in FIG. 3, the coating material discharge unit 14, which is a coating material coating mechanism, is tapered and tapered toward the coating material discharge port 38. Normally, as shown in FIG. 6, the coating material discharge port of the coating material discharge section has a needle shape. In the case of a needle-shaped discharge port, after the coating material discharge portion is filled with a coating material such as frit glass or a paste material, and then discharged from the discharge port, the coating material having extremely wettability is obtained. Easily adheres to the wall surface inside the application material discharge section due to its wetting. Therefore, the coating material discharged from the coating material discharge port may be cut, that is, a portion where the coating material is not continuously discharged may be formed, or a part of the coating material may be discharged thin.

The coating material discharge section 14 of the present embodiment compensates for such a drawback. If the coating material discharge section 14 has the tapered discharge port as described above, the frit is moved toward the coating material discharge port 38. Coating material 1 such as glass or paste material
In No. 3, since the pressure is concentrated, the discontinuous portion of the coating material such as the needle-shaped discharge port can be prevented from being generated, and the coating material can be prevented from being partially thinned.

Next, the drying structure of the coating material of the present embodiment will be described. When the coating material 13 such as flat glass and paste material is applied to the member 16 to be coated, X,
Although the dispenser 15 is moved in the Y direction, it is desirable that the coating material 13 applied to the member 16 on the stage 17 be dried appropriately after the application. Therefore, the coating material 13 is sequentially applied in the X and Y directions of the member 16 to be coated such as a substrate for forming an image apparatus, but in the related art, the dispenser is moved in accordance with the movement of the dispenser. The coating material at a position, that is, the coating material immediately after being applied to a certain position, has been dried by heating the locally applied coating material by a local heating mechanism.

However, when the dispenser moves to the next position, the local heating mechanism moves in the same manner as the dispenser, so that the applied material applied to the previous position is continuously heated by the local heating mechanism. Instead, the coating material applied to the next position is heated by the local heating mechanism. Therefore, the coating material applied on the member to be coated is allowed to dry naturally after being locally heated once, until the coating of the material on the member to be coated is completed.

In view of the above points, in the present embodiment, when the coating material 13 is applied on the member 16 to be applied, the dispenser 15 continues until the coating material is applied on the member 16 to be applied. Specifically, the coating material is uniformly dried.

The drying structure of the present embodiment is described in FIGS. 4 and 5, and the structure and operation will be described below.
The drying structure of the present embodiment includes a coating material drying mechanism 40 that can move in the vertical and horizontal directions, and a coating material drying mechanism control unit 3 that controls the coating material drying mechanism 40 according to a command from the CPU 20.
9. a coating material drying gas outlet 41 for discharging a gas for drying the coating material 13, a coating material position sensing sensor 42, and a coating member fixing pin 43 for fixing the coating member 16 on the stage 17, The coating member suction port 44 includes a vacuum mechanism 45 for evacuating the coating member suction port 44. A coating material drying gas outlet 41 and a coating material position sensing sensor 42 are attached to the coating material drying mechanism 40.

After the member 16 to be coated is placed on the stage 17, the CPU 20 pushes the coating material drying mechanism 40 built in the stage driving mechanism 18 upward from the stage driving mechanism. Drying mechanism 40
5 protrudes upward so as to surround the member to be coated 16 arranged on the stage 17 as described in FIG. Further, when the member 16 to be coated is placed on the stage 17, the pin 43 for fixing the member to be coated is lifted from the inside of the stage 17 so as to suppress the four corners of the member 16 to be coated based on a command from the CPU 20. Then, the member 16 to be coated on the stage 17 is fixed. At this time, at the same time, the CPU 20 issues a command to the vacuum mechanism 45 to start evacuation from the application member suction port 44 built in the stage 17. In this way, the member 16 to be coated can be fixed on the stage 17 by vacuum evacuation, and the member 16 to be coated on the stage 17 can be reliably fixed.

Next, the CPU 20 makes the dispenser 1 operate based on the data input from the I / F section 21 as described above.
5 is moved in the X and Y directions to apply the coating material 13 on the member 16 to be coated. At the same time as the application of the application material 13 is started, the CPU 20 issues a command to the application material drying mechanism control unit 39 to dry the applied application material from the application material drying gas outlet 41 built in the application material drying mechanism 40. Out of the gas for drying the coating material. When the application material 13 is applied, the application material position detecting sensor 42 shown in FIG. 4 detects the position of the application material 13 applied on the member 16 to be applied, and transmits the data to the CPU 2.
Transfer to 0. The CPU 20 issues a command to the coating material drying mechanism control unit 39 based on the data, adjusts the position of the coating material drying gas outlet 41, and sets the drying gas at the optimum position for drying the coated coating material. To be leaked,
The position of the coating material dry gas outlet 41 is set.

This operation is continued until the application of the coating material 13 on the member 16 is completed.
The coating material 13 on 6 can always be dried under optimal conditions until the application of the coating material is completed.

[0049]

According to the first aspect of the present invention, the control unit can adjust the angle of the discharge port with respect to the member to be coated by the coating material discharge port angle adjustment unit. A suitable coating shape, for example, a cross section of the coating material can be set to a columnar shape or a semicircular shape.

According to the second aspect of the present invention, the dispenser has the mechanism for inspecting the surface of the member to be coated, and inspects the state of the surface of the member to be coated, for example, the state of undulation or warpage. While grasping the surface condition of each position of the member to be coated, a command is issued to the coating material discharge port angle adjustment unit for each coating position on the member to be coated, and the angle of the coating material discharge port with respect to the member to be coated is adjusted. be able to. In this way, the surface height of the coating material on the member to be coated is not varied, and at the same time, the cross-sectional shape after the coating of the coating material can be maintained in a predetermined shape, thereby optimizing the surface shape of the coating material. Can do things.

According to the third aspect of the present invention, when applying the coating material on the member to be coated, pressure is applied to the coating material in the dispenser. Since the taper shape is applied, when the coating material is discharged, the pressure is concentrated and applied toward the discharge port of the coating material discharge portion, so that the coating material is sufficiently compared with the needle-shaped coating material discharge port. , A discontinuous portion or a thin shape is not easily generated in the coating material applied on the member to be applied.

According to the fourth aspect of the present invention, while the coating material is applied, the coating material position sensing means detects the position of the coating material applied on the member to be applied.
You can grasp the exact position of the coating material, change the position of the gas outlet for drying the coating material according to the position of the coating material,
It can be set so that the gas for drying the coating material hits the coating material at the optimum position until the coating is completed. Therefore, the coating material on the member to be coated can be constantly dried under optimal conditions until the coating of the coating material is completed.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a coating material coating apparatus according to the present invention.

FIG. 2 is an explanatory view showing a state of a coating material applied to a member to be coated by a coating material applying apparatus of the present embodiment.

FIG. 3 is a configuration diagram illustrating a discharge portion of a dispenser in the coating material coating apparatus according to the present embodiment.

FIG. 4 is a side view showing a coating material drying structure.

FIG. 5 is a top view showing a coating material drying structure.

FIG. 6 is a schematic configuration diagram illustrating an example of a conventional coating material coating apparatus.

FIG. 7 is a configuration diagram illustrating a discharge portion of a conventional dispenser.

FIG. 8 is an explanatory diagram showing a state of a coating material applied to a member to be coated by a conventional coating material applying apparatus.

[Explanation of symbols]

 Reference Signs List 1 frit 2 needle 3 dispenser 4 member to be coated 5 stage 6 stage drive mechanism 7 ultrasonic vibration mechanism 8 drive control unit 9 air hose 10 dispenser controller 11 power supply for ultrasonic generation 12 computer 13 coating material 14 coating material discharge unit 15 dispenser 16 Coating member 17 Stage 18 Stage drive mechanism 19 Coating material solidification prevention mechanism 20 CPU 21 I / F section 22 X-axis drive control section 23 Y-axis drive control section 24 Z-axis drive control section 25 Axis rotation drive control section 26 X-axis Drive system 27 Y-axis drive system 28 Z-axis drive system 29 Shaft rotation drive system 30 Power supply for coating material solidification prevention mechanism 31 Coating material discharge port angle adjustment unit 32 Coating material injection pressure adjustment unit 33 Coating material injection port 34 Coating material discharge pressure Adjustment unit 35 Application condition storage device 36 Member to be applied Surface inspection mechanism 38 coated material discharge port 39 coating material drying mechanism control section 40 coated material drying mechanism 41 coating material drying gas outlet 42 coating material position sensing sensor 43 to be coated member fixing pin 44 to be coated member suction port

Claims (4)

[Claims] 1. A dispenser for discharging a coating material to a member to be coated, a stage for fixing the member to be coated, a dispenser driving system for driving the dispenser, a stage driving system for driving the stage, and control of each part. A dispenser, wherein the dispenser includes a discharge port angle adjustment unit that can change an angle of a coating material discharge port provided at a lower end with respect to a member to be coated, and the control unit controls the application discharged from the dispenser. A coating material coating apparatus, wherein the angle of the coating material discharge port with respect to a member to be coated is adjusted by a discharge port angle adjustment unit so that the material has a desired shape. 2. The apparatus according to claim 1, wherein the dispenser further includes, at a lower portion thereof, a member inspection unit for inspecting a surface state of each position on a surface of the member to be coated. The coating material coating apparatus according to claim 1, wherein the surface state of the coating position of the member to be coated is inspected, and the discharge port angle adjusting unit adjusts the discharge port angle based on the surface state information. 3. The coating material coating apparatus according to claim 1, wherein the dispenser has a discharge port having a tapered shape with a tapered tip. 4. A coating material drying mechanism capable of moving vertically and horizontally, a coating material dry gas supply port provided in the coating material drying mechanism for blowing out a drying gas, and a position sensing means for sensing a position of the coating material on the coating member. The control unit causes the position sensing unit to detect the position of the coating material applied to the member to be coated, and supplies the coating material drying gas to a position suitable for drying the coating material by the coating material drying mechanism. 4. The coating material coating apparatus according to claim 1, wherein the coating material can be uniformly dried and solidified until the coating is completed by moving the mouth.