KR20140007755A - Apparatus for spreading paste - Google Patents

Abstract

The present invention provides an apparatus for spreading paste comprising: a paste storage part (30) for storing glass paste to be spread on a device-side substrate; a nozzle (31a) for discharging the glass paste toward the device-side substrate; a pipe (312a) for circulating the glass paste from the paste storage part (30) to the nozzle (31a); and a stirring device (33) incorporated into the pipe (312a) to stir the glass paste circulating through the pipe (312a), wherein the stirring device (33) is incorporated into the pipe (312a) to be able to move.

Description

Paste application device {APPARATUS FOR SPREADING PASTE}

The present invention relates to a paste coating device.

For example, in a manufacturing process of a light emitting panel such as an organic EL panel which emits an organic EL (Electro-Luminescence) element to display an image, etc., a glass substrate (element side substrate) provided with light emitting elements such as an organic EL element is provided. The process of sticking the glass substrate for sealing (sealing substrate) is included. In this step, a paste (glass paste) containing a glass frit for fixing the sealing substrate is applied to the element side substrate by a paste coating device such as a dispenser.

As a background art of this technical field, for example, Patent Document 1 describes, "A screw having a helical flange in the axial direction on the surface of a rod, a rotation drive mechanism for rotating the screw, and a screw are inserted. (I) a main body portion having a screw insertion hole to be connected, a liquid material supply port provided on the side of the screw insertion hole, and a liquid material supply flow path communicating with the liquid material supply port, and a screw insertion hole disposed in the screw insertion hole ( The sealing member and the nozzle which are attached to the main body part are provided, and the nozzle which communicates with a screw insertion hole is provided, and a liquid-proof space is formed above the liquid material supply opening of a screw insertion hole, and a sealing member is The liquid is supplied so as not to get wet, and the screw is rotated forward to discharge from the nozzle ”(see summary).

International Publication WO 2008/126414

In the case where a liquid material in a paste state such as glass paste is discharged from the nozzle and applied to the element-side substrate, a method of pressing and pushing the inside of the nozzle by air pressure may be adopted. In such a liquid material (glass paste), fine solid particles such as glass frit are mixed and contained, and when these solid particles (glass frit and the like) are collected and become agglomerate, a fine tube such as a nozzle ( The pipe may be blocked.

Therefore, the glass paste is required to be in a state where the solid particles (glass frit and the like) contained therein are diffused.

For example, a state in which solid particles are diffused can be maintained by stirring the glass paste in a pipe leading the glass paste to the nozzle.

For example, as described in Patent Literature 1, the paste can be stirred in the conduit by providing a rotating screw in a conduit (liquid supply channel) that guides the paste to the nozzle (liquid supply port).

However, in the structure of patent document 1, since the structure which supports a screw, the structure which rotates a screw, etc. are needed, there exists a problem that the structure of the apparatus which apply | coats a liquid material becomes complicated.

Then, this invention makes it a subject to provide the paste application apparatus which can stir the paste before discharged from a nozzle by a simple structure.

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, this invention is a stirring mechanism which stirs the said liquid material in the pipeline | path through which the liquid material flows from the storage part which stores the liquid material of the paste state apply | coated to a board | substrate to the nozzle which discharges a liquid material. It is set as the paste coating apparatus provided with. And the said stirring mechanism has the characteristic that it was incorporated in a pipe line so that flow was possible.

According to this invention, the paste application apparatus which can stir the paste before discharged from a nozzle by a simple structure can be provided.

1 is a perspective view showing a paste coating device according to an embodiment of the present invention.
FIG. 2A is a side view of the syringe head, and FIG. 2B is a cross-sectional view showing the configuration of the nozzle holder.
3 is a diagram illustrating an example of elements constituting the stirring mechanism.
(A) is sectional drawing of the arm part which shows the state in which the sealing member was separated, (b) is sectional drawing of the arm part which shows the state in which the stirring mechanism is inserted, (c) is the open end of a pipe line by a sealing member. It is sectional drawing of the arm part which shows the state where iv) is occluded.

EMBODIMENT OF THE INVENTION Hereinafter, the Example of this invention is described in detail with reference to drawings suitably. In addition, in the following description, although an organic electroluminescent panel is made an example of a light emitting panel, this invention can be applied also to light emitting panels other than an organic electroluminescent panel. As light emitting panels other than the organic EL panel, there are a plasma display panel, a liquid crystal display panel, and the like. This invention is not limited to an organic electroluminescent panel, It is applicable widely to the light emitting panel of the structure which adheres two glass substrates by baking of the glass frit contained in a glass paste.

(Example)

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the paste application apparatus which concerns on a present Example, (a) is a side view of a syringe head, (b) is sectional drawing which shows the structure of a nozzle holder.

As shown in Fig. 1, the paste coating device 1 of the present embodiment has a table 2 on which a substrate (element side substrate 10), such as a glass substrate, on which a light emitting surface 10a is formed, is mounted. The glass paste (liquid material) is apply | coated to the element side board | substrate 10 mounted in 2) in predetermined shape (coating pattern).

The element side substrate 10 is, for example, an element constituting an organic EL panel, and the light emitting surface 10a is a surface on which a circuit including an organic EL element (not shown) is disposed. In a circuit including such an organic EL element, light emission of the organic EL element is controlled by a controller (not shown).

The table 2 is arrange | positioned at the stage 1a of the paste application apparatus 1, and is comprised so that the movement apparatus 2a, 2b is movable so that it may move in two directions which intersect on the plane used as the stage 1a. .

That is, the stage 1a of the paste coating device 1 of this embodiment becomes a plane on which the element side substrate 10 is mounted.

In the stage 1a, the coordinate axis which makes two directions which the table 2 moves to make X-axis and a Y-axis, respectively, is set, and the table 2 is a direction along the X-axis (X-axis direction) by the moving apparatus 2a. And move in the direction along the Y axis (Y axis direction) by the moving device 2b.

In addition, the moving device 2a is provided with a sensor (position detection sensor or the like) for detecting the moving distance of the table 2 in the X-axis direction, and the moving device 2b is provided in the Y-axis direction of the table 2. It is preferable that the structure provided with the sensor (position detection sensor etc.) which detects a movement distance.

In addition, the paste application apparatus 1 is provided with the syringe head 3 which apply | coats a glass paste from the upper side to the element side board | substrate 10 mounted in the table 2. The syringe head 3 is attached to the gantry 4 placed horizontally above the stage 1a, and moves on the lower stage 1a in two directions (X-axis direction and Y-axis direction). To apply the glass paste.

In addition, although the paste application apparatus 1 with one syringe head 3 is shown in FIG. 1, the paste application apparatus 1 of the structure provided with two or more syringe heads 3 may be sufficient.

In addition, in this embodiment, the table 2 is moved on the stage 1a by the moving apparatuses 2a and 2b, and the gantry 4 to which the syringe head 3 is attached is fixed relative to the stage 1a. .

In this structure, by moving the table 2 by the moving apparatuses 2a and 2b, the element side substrate 10 and the syringe head 3 mounted on the table 2 can be relatively moved.

That is, the moving apparatuses 2a and 2b have a function of relatively moving the element side substrate 10 and the syringe head 3.

In addition to such a structure, the structure which the syringe head 3 and the gantry 4 move to an X-axis direction and a Y-axis direction may be sufficient. Alternatively, the table 2 moves in one direction of the X-axis direction and the Y-axis direction, and the syringe head 3 (gantry 4) moves in the other direction of the X-axis direction and the Y-axis direction. The structure may be sufficient.

In either configuration, it is possible to move the syringe head 3 and the table 2 (element side substrate 10) relatively.

The paste application device 1 is controlled by the control device 5. The control apparatus 5 controls the movement apparatus 2a, 2b, and moves the table 2 suitably. Moreover, the control apparatus 5 controls the syringe head 3, and turns application | coating of glass paste ON / OFF.

Moreover, the control apparatus 5 acquires the movement distance of the table 2 in the X-axis direction and the Y-axis direction with a sensor, and moves the movement apparatus 2a, 2b so that the table 2 may be moved to arbitrary positions. To control.

In the paste application apparatus 1 comprised in this way, the glass paste is apply | coated with the syringe head 3 to the element side board | substrate 10 mounted in the table 2.

In the pasting device 1, the element side substrate 10 in which the light emitting surface 10a was formed is conveyed by the conveying means 20 in a previous process.

In addition, the shape of the element side substrate 10 (the shape of the light emitting surface 10a) is not limited to the rectangle.

For example, the element side substrate 10 (light emitting surface 10a) of a circular or elliptical shape may be sufficient, and the element side substrate 10 of n-square (n is a natural number of 3 or more) may be sufficient.

In addition, although the conveying means 20 should just be a conveying conveyor as shown in FIG. 1, you may be a conveying robot etc., and the structure of the conveying means 20 is not limited.

As shown in FIG. 1, the element side board | substrate 10 conveyed to the paste application apparatus 1 by the conveying means 20 is mounted in the table 2, and is fixed suitably. The structure which fixes the element side board | substrate 10 to the table 2 is not limited. For example, the element-side substrate 10 may be sucked and fixed from the table 2 side.

When the device side substrate 10 is mounted (fixed) on the table 2, the control device 5 controls the moving devices 2a and 2b to move the table 2, and the element side substrate 10 is predetermined. Move to the application start position of the. Application | coating start position is a predetermined position which starts application | coating of the glass paste by the syringe head 3, and it is preferable that it is set suitably. And the control apparatus 5 applies the glass paste to the element side board | substrate 10 so that the table 2 may be moved and the predetermined | prescribed application | coating pattern is drawn, while applying the glass paste from the syringe head 3.

Moreover, it is preferable that the paste application apparatus 1 is equipped with the positioning means for moving the element side board | substrate 10 mounted in the table 2 to a predetermined reference position.

The configuration of the positioning means is not limited. For example, the reference point G1 and G2 previously marked on the element side board | substrate 10 are read by the image recognition camera etc., and the control apparatus 5 sets the table 2 so that the read reference point G1, G2 may become a predetermined position. It is good to set it as the structure which moves. In this way, the position of the element-side substrate 10 where the marked reference points G1 and G2 become predetermined positions is the reference position of the element-side substrate 10.

For example, when two or more reference points G1 and G2 are marked on the element side substrate 10 and the table 2 is rotatable in a plane parallel to the stage 1a, the control device 5 The table 2 can be rotated so that all reference points G1 and G2 are at predetermined positions. Thereby, one side of the light emitting surface 100a formed in a rectangle can be made parallel to the coordinate axis (X-axis, Y-axis) set to the stage 1a.

And the control apparatus 5 can move the table 2 suitably to a X-axis direction and a Y-axis direction, and can apply | coat a glass paste around the light emitting surface 100a.

In addition, the syringe head 3 is attached to the gantry 4 so as to be movable up and down, and the syringe head 3 is connected to the element-side substrate 10 and the nozzle 31a (see FIG. 2B). It is good also as a structure provided with the sensor (optical displacement meter etc. which uses a laser beam) which measures a distance.

If it is such a structure, the control apparatus 5 can measure the distance of the nozzle 31a and the element side board | substrate 10, when apply | coating a glass paste. And the control apparatus 5 can hold | maintain the nozzle 31a and the element side board | substrate 10 at a suitable distance by moving the syringe head 3 up and down.

(A) is a side view of a syringe head, (b) is sectional drawing which shows the structure of a nozzle holder.

As shown in Fig. 2A, the syringe head 3 of the present embodiment includes a reservoir (paste reservoir 30) for storing a glass paste formed of a hollow cylinder and a paste reservoir ( It comprises a nozzle holder 31 attached to one end of 30. In addition, the paste storage part 30 is provided with the air press part 32 in the other end facing the end to which the nozzle holder 31 is attached.

When the glass paste applied to the element side substrate 10 (refer FIG. 1) is stored in the paste storage part 30, and the inside of the paste storage part 30 is pressurized by the air pressurizing part 32, the glass paste Is pushed out from the paste reservoir 30 to the nozzle holder 31 and discharged from the nozzle 31a provided in the nozzle holder 31.

The air pressurizing section 32 may be configured to send, for example, compressed air (or nitrogen gas, etc.) compressed by an air compressor (compressor) not shown in the paste storage section 30.

The syringe head 3 is attached to the gantry 4 (refer to FIG. 1) so that the axial direction of the paste storage part 30 may become an up-down direction, and the nozzle holder 31 will be downward. And the glass paste pushed out from the paste storage part 30 by the compressed air sent from the air pressurization part 32, and discharged from the nozzle 31a moves on the lower stage 1a (refer FIG. 1). It is comprised so that it may apply to the element side board | substrate 10 (refer FIG. 1).

As shown in FIG. 2B, the nozzle holder 31 includes a body part 311 connected to one end of the paste storage part 30 and an axial direction of the paste storage part 30. And an arm portion 312 extending from the body portion 311 in a vertical direction.

And the syringe head 3 is attached to the gantry 4 (refer FIG. 1) so that the arm part 312 may become parallel with the plane which forms the stage 1a (refer FIG. 1).

In addition, a conduit 311a through which the glass paste flows is formed inside the body 311, and a conduit 312a through which the glass paste flows is formed inside the arm part 312. The pipeline 311a of the trunk portion 311 and the pipeline 312a of the arm portion 312 communicate with each other via the corner portion 313a.

The conduit 312a of the arm part 312 is a conduit extending in the axial direction of the arm part 312, and is the front end 312b of the arm part 312 (end part of the side facing the fuselage part 311 side). It is configured to penetrate through. That is, the open end 312c of the conduit 312a is formed at the tip portion 312b. And the sealing member 31c which closes the open end 312c of the pipeline 312a is inserted in the front-end | tip part 312b of the pipeline 312a.

The sealing member 31c is a screw member which is screwed to the female screw formed in the front-end | tip part 312b side (open end 312c of the pipeline 312a) of the pipeline 312a, for example, and is comprised so that attachment and detachment are possible. It is preferable.

Moreover, the structure which the sealing member which is not shown in figure is arrange | positioned between the sealing member 31c and the front-end | tip part 312b of the arm part 312 is preferable, and the structure which seals between the sealing member 31c and the front-end | tip part 312b is preferable.

In addition, a nozzle 31a is attached to the arm portion 312. When the syringe head 3 is attached to the gantry 4 shown in FIG. 1, the nozzle 31a is attached in the direction which discharges glass paste downward.

For example, when the syringe head 3 is affixed so that the axial direction of the paste storage part 30 may be an up-down direction, the nozzle 31a has an axial direction parallel to the axial direction of the paste storage part 30, and is downward. It is attached to open. And the nozzle 31a and the conduit 312a of the arm part 312 communicate.

When the syringe head 3 is configured as shown in Figs. 2A and 2B, when the compressed air is sent from the air pressurizing portion 32 to pressurize the interior of the paste storage portion 30, the glass paste is It pushes out from the paste storage part 30 to the nozzle holder 31, and distributes the pipeline 311a of the trunk | drum 311. As shown in FIG. In addition, the glass paste flows through the conduit 312a of the arm part 312 via the corner part 313a, and is discharged from the nozzle 31a.

In addition, in the paste application device 1 (refer FIG. 1) of this embodiment, the stirring mechanism 33 is incorporated in the conduit 312a of the arm part 312 of the nozzle holder 31. As shown in FIG.

It is preferable that the stirring mechanism 33 is a wing-shaped member which has the function to rotate the glass paste which flows along the pipeline 312a along the circumferential direction of the inner wall 312a1 of the pipeline 312a, for example.

It is a figure which shows an example of the element which comprises a stirring mechanism.

For example, as shown in FIG. 3, the stirring mechanism 33 is in the right direction along the inner wall 312a1 of the conduit 312a as viewed upstream of the flow of the glass paste Gp in the conduit 312a. A plurality of right elements 33a for imparting swing force to the glass paste Gp and left elements 33b for imparting swing force in the left direction along the inner wall 312a1 of the pipeline 312a to the glass paste Gp, respectively, It is preferable that it is a static mixer of the shape arrange | positioned in series.

As shown in FIG. 3, the glass paste Gp which distribute | circulates the pipeline 312a by which the stirring mechanism 33 (static mixer) was incorporated in the axial direction is the inner wall (3) of the pipeline 312a by the stirring mechanism 33. As shown in FIG. It is stirred while turning along the circumferential direction of 312a1). Therefore, it is suppressed that solid particles, such as glass frit, contained in glass paste Gp hold | maintain the diffused state and become a block.

In addition, the shape of the right element 33a and the left element 33b shown in FIG. 3 is illustrated in order to demonstrate the function of the stirring mechanism 33, and limits the shape of the stirring mechanism 33 (static mixer). It is not.

(A)-(c) is a figure which shows the step of incorporating a stirring mechanism into the pipeline of an arm part.

As shown in Fig. 4A, the conduit 312a of the arm portion 312 penetrates through the tip 312b, and an open end 312c of the conduit 312a is formed at the tip 312b. Therefore, when the sealing member 31c is separated, the end part 312b side of the pipeline 312a is opened.

Moreover, by using the sealing member 31c as a screw member, it can be comprised so that separation from the arm part 312 is easy.

For example, as shown in FIG.4 (b), the stirring mechanism 33 can enter easily inside the pipeline 312a from the open end 312c in which the pipeline 312a is opened. Do. That is, the worker who incorporates the stirring mechanism 33 can easily insert the stirring mechanism 33 into the conduit 312a from the open end 312c of the tip part 312b.

Then, as shown in FIG.4 (c), when the sealing member 31c is attached to the front-end | tip part 312b of the arm part 312, the open end 312c of the conduit 312a is closed, and a stirring mechanism ( 33 is placed in the conduit 312a and sealed and incorporated in the conduit 312a.

Moreover, the stirring mechanism 33 is inserted in the state inserted from the open end 312c of the pipeline 312a, and is incorporated in the state which is not restrained by the inner wall 312a1 of the pipeline 312a, other mechanisms, and structures. . Thereby, the stirring mechanism 33 is incorporated in the pipe line 312a so that it can move freely (flowable).

In other words, the structure of the pipe line 312a can be made into the simple structure which does not require the mechanism and structure for supporting the stirring mechanism 33. FIG.

In addition, as shown in Fig. 2B, a corner portion 313a is formed on the trunk portion 311 side of the pipeline 312a, and is curved on the paste storage portion 30 side. Therefore, when the stirring mechanism 33 in the conduit 312a of the arm part 312 can only move to the position of the corner part 313a, and it moves to another place from the conduit 312a of the arm part 312, none.

In this way, the stirring mechanism 33 is incorporated in the conduit 312a of the arm portion 312 in a very easy operation.

In addition, the paste coating apparatus 1 (refer FIG. 1) of this embodiment is the air press part 32 (refer FIG. 2 (a)) provided in the paste storage part 30 (refer FIG. 2 (a)). ) Pressurizes the paste storage part 30 to push out the glass paste Gp (refer FIG. 3), and is discharged from the nozzle 31a (refer FIG. 2 (b)) of the arm part 312. FIG.

When the air pressurizing portion 32 presses the paste storage portion 30, the conduit 312a (see FIG. 2B) of the arm portion 312 is pressurized from the corner portion 313a side, and the stirring mechanism 33 (See FIG. 2B) is pushed toward the sealing member 31c (see FIG. 2B). Thus, since the rotation is suppressed by being pushed by the sealing member 31c by the stirring mechanism 33, the rotation of the stirring mechanism 33 when the glass paste Gp flows through the conduit 312a is suppressed. The stirring mechanism 33 can stir the glass paste Gp effectively.

As described above, the paste coating device 1 (see FIG. 1) of the present embodiment is a pipe 312a through which the glass paste Gp (see FIG. 3) to be applied to the element-side substrate 10 (see FIG. 1) is distributed. ) (See FIG. 2B), a stirring mechanism 33 (see FIG. 2B) such as a static mixer is incorporated. Then, the glass paste Gp is passed through to the nozzle 31a (see FIG. 2B) while stirring, and can be discharged from the nozzle 31a to be applied to the element side substrate 10. Therefore, the state which solid particle | grains, such as glass frit, contained in glass paste Gp was spread | diffused can be maintained, and it can suppress that the capillary part, such as nozzle 31a, is blocked by solid particle | grains, such as glass frit.

Moreover, by using the stirring mechanism 33 as a static mixer, the power source other than the compressed air which drives the stirring mechanism 33 is unnecessary, and the glass paste Gp can be stirred with a very simple structure.

In addition, it is also very easy for workers to incorporate the stirring mechanism 33 into the conduit 312a (see FIG. 2B) of the arm portion 312, so that workers who manage the paste application device 1 are easy. The stirring mechanism 33 can be incorporated.

In addition, the stirring mechanism 33 (refer FIG.2 (b), a static mixer etc.) of this embodiment is the arm part 312 extended in parallel with the stage 1a (refer FIG. 1) of the paste application apparatus 1 ) Is incorporated into a conduit 312a (see FIG. 2B).

And when the paste application apparatus 1 is provided so that the stage 1a may become substantially horizontal, the arm part 312 extends substantially in a horizontal direction, and glass paste Gp which distribute | circulates the inside of the conduit 312a (FIG. 3) is distributed in the approximately horizontal direction.

Therefore, the glass paste Gp which rotates along the circumferential direction of the inner wall 312a1 (refer FIG. 3) of the conduit 312a by the stirring mechanism 33 incorporated in the conduit 312a of the arm part 312 is up-and-down Agitated in the direction. Thereby, the glass paste Gp which glass frit tends to become agglomerate easily by precipitation by the difference of a density, etc. can be stirred suitably, and the state which glass frit spread | diffused can be maintained moderately.

In addition, this invention is not limited to an Example and a modification which were mentioned above. For example, the above-described embodiments are described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.

It is also possible to replace part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of an embodiment.

For example, the stirring mechanism 33 (refer FIG.2 (b)) is not limited to a static mixer. For example, a member in which an elongated flat plate is twisted in one direction may be formed. In this case, the glass paste Gp (refer FIG. 3) which distribute | circulates the pipeline 312a (refer FIG. 2 (b)) of the arm part 312 is distribute | circulated while turning in one direction. Compared with the case where it turns to the left and right as viewed from the upstream, the effect of diffusing the solid particles contained in the glass paste Gp is small, but the effect of diffusing the solid particles can be obtained. In addition, an inexpensive member can be used as the stirring mechanism 33 as compared with the static mixer.

Or the glass paste Gp (refer FIG. 3) which distribute | circulates the pipeline 312a (refer FIG. 2 (b)) of the arm part 312 of the inner wall 312a1 (refer FIG. 2 (b)) The stirring mechanism 33 (refer FIG. 2 (b)) of the structure by which the some blade-shaped member which has the function to rotate along the circumferential direction is inserted in the pipe line 312a.

1: paste applicator
1a: Stage (plane on which board is mounted)
2: table
3: syringe head
10: element side substrate (substrate)
30: paste storage part (storage part)
31a: nozzle
31c: sealing member
33: stirring mechanism (static mixer)
312 arm part
312a: pipeline
312a1: inner wall
312c: open end
Gp: glass paste (liquid material)

Claims (5)

A storage portion for storing a liquid material in a paste state applied to the substrate;
A nozzle for discharging the liquid material toward the substrate;
A pipeline through which the liquid material flows from the reservoir to the nozzle;
A stirring mechanism for agitating the liquid material incorporated in the pipeline and circulating the pipeline,
The stirring mechanism is incorporated into the pipe so as to flow. The method of claim 1,
The stirring mechanism is provided in a state inserted into the pipeline from the open end of the pipeline,
The said open end is closed by the removable sealing member, The paste coating apparatus characterized by the above-mentioned. The method of claim 1,
The conduit is configured to circulate the liquid material substantially parallel to a plane on which the substrate is mounted;
And said stirring mechanism has a function of pivoting said liquid material along the circumferential direction of the inner wall of said conduit. The method of claim 1,
Paste application apparatus, characterized in that the stirring mechanism is a static mixer. The method of claim 3, wherein
Paste application apparatus, characterized in that the stirring mechanism is a static mixer.

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