KR102145947B1 - Pressure diffusion-plate unit for bubbles removal and Apparatus for variable pressure having the same - Google Patents

Abstract

The present invention provides a diffuser unit for removing air bubbles. The diffuser unit for removing bubbles is installed on an inner upper wall of a main body in which a panel with a film attached to the upper surface thereof is accommodated, and supplies pressure air provided from the outside to the interior of the main body. The diffuser unit comprises a disk-shaped plate body and a plurality of pressure discharge holes formed in the plate body, wherein the plurality of pressure discharge holes are disposed along different radial paths at the center of the plate body, and are arranged to be staggered from each other.

Description

A diffuser unit for removing air bubbles and a variable pressure device having the same.

The present invention relates to a diffuser unit for removing air bubbles and a variable pressure device having the same.

In order to manufacture a small electronic device such as a smart phone, a process of bonding a panel made of a specific material and a cover glass using an adhesive is required.

The panel occupies the most important part in determining the process technology, performance, reliability, and product price of the finished device. The panel may be used as plastic or glass such as polyimide (PI), polyethyleneterephthalate (PET), or polyethylene naphthalate (PEN).

And the pressure-sensitive adhesive uses an optical pressure-sensitive adhesive to bond the display device. There are two types of optical adhesives, OCA (optically clear adhesive) and OCR (optically clear resin). OCA is provided in the form of a functional adhesive film and has excellent workability.

The adhesive film including the OCA film is attached through a bonding process that is bonded on the panel, and a cover glass is bonded on the adhesive film.

During such a bonding process, bubbles of various sizes may be generated at multiple locations between the panel and the adhesive film depending on the process environment (such as high temperature and humidity).

When air bubbles are generated in this way, not only a malfunction of the panel itself is caused, but also there is a problem that a spot phenomenon occurs in multiple locations of the panel.

Accordingly, conventionally, the bubble removal operation was performed by exposing the film-attached panel to a predetermined high temperature and high pressure environment to remove bubbles.

However, conventionally, there is a problem in that air bubbles formed in substantially irregular positions cannot be effectively removed by simply exposing the panel to which the film is attached to an environment in which a set pressure is applied for a certain period of time. Accordingly, in the related art, there is a problem that a malfunction of the panel itself is caused, and a spot phenomenon occurs at multiple locations of the panel as it is.

It is an object of the present invention to guide the pressure air provided from the outside toward the upper surface of the panel to which the film is attached to the upper surface of the panel. It is to provide a bubble-removing diffuser unit capable of efficiently removing bubbles formed in multiple locations, and a variable pressure device having the same.

The object of the present invention is not limited to the above-mentioned object, and other objects and advantages of the present invention not mentioned can be understood by the following description, and will be more clearly understood by the examples of the present invention. In addition, it will be easily understood that the objects and advantages of the present invention can be realized by the means shown in the claims and combinations thereof.

In order to achieve the above object, the present invention provides a diffuser unit for removing air bubbles and a variable pressure device having the same.

In the diffuser unit for removing bubbles, the diffuser unit is installed on the inner upper wall of the main body in which the panel to which the film is attached is accommodated, and supplies pressure air provided from the outside to the inside of the main body,

The diffuser unit has a disk-shaped plate body and a plurality of pressure discharge holes formed in the plate body,

The plurality of pressure discharge holes are disposed along different radial paths at the center of the plate body, and are disposed to be staggered from each other.

Here, the diffuser unit is disposed above the panel,

The area of the plate body is,

It is preferable to form an area included in the area of the panel.

And each of the plurality of pressure discharge holes,

An inlet hole with an upper end exposed on the upper surface of the plate body and having a uniform inner diameter,

Doedoe connected to the lower end of the inlet hole, it is preferable to include a radiation hole formed so that the inner diameter gradually widens from the upper end to the lower end.

In addition, the inner diameter of the lower end of the radiation hole of the plurality of pressure discharge holes,

It is preferable that it is formed to gradually widen from the center of the plate body along the edge of the plate body.

In addition, the inner peripheral surface of the radiation hole,

It is preferably formed in a convex shape toward the inside.

In addition, the inner periphery of the radiation hole,

A first inner periphery facing the center side of the plate body,

Including a second inner periphery facing the edge side of the plate body,

It is preferable that the inclination of the second inner periphery is a gentler inclination than the inclination of the first inner periphery based on the bottom surface of the plate body.

In addition, in the inner periphery of the inlet hole and the radiation hole,

It is preferable that a vortex-shaped groove is further formed.

In addition, the plate body,

Including ring-shaped unit plate bodies having different diameters,

It is preferable that the unit plate bodies are configured to be sequentially coupled.

In addition, the upper surface of the plate body,

It is preferable to form a concave curved surface along the edge at the center of the plate body.

In another embodiment, the present invention provides a variable pressure device including the diffuser unit for removing bubbles described above.

According to the above solution, the present invention guides the pressure air provided from the outside toward the upper surface of the panel to which the film is attached to the upper surface of the panel, but adjusts the degree of supply of the pressure air to the center and other areas of the panel. Thus, it has the effect of efficiently removing air bubbles formed at multiple locations on the upper surface of the panel.

In addition to the above-described effects, specific effects of the present invention will be described together while describing specific details for carrying out the present invention.

1 is a perspective view showing a variable pressure device having a diffuser unit for removing bubbles according to the present invention.
2 is a plan view showing a diffuser unit according to the present invention.
3 is a cross-sectional view showing the diffuser unit of FIG. 2.
4 is a cross-sectional view showing a first example of the diffuser unit of the present invention.
5 is a cross-sectional view showing a second example of the diffuser unit according to the present invention.
6 is an exploded cross-sectional view showing a third example of the diffuser unit according to the present invention.
7 is a combined cross-sectional view showing a third example of the diffuser unit according to the present invention.
8 is a cross-sectional view showing another example of pressure discharge holes according to the present invention.
9 is a plan view showing a state in which a panel is disposed under the diffuser unit according to the present invention.
10 is a plan view showing another example of a diffuser unit according to the present invention.
11 is a cross-sectional view taken along line BB in FIG. 10.
12 is a cross-sectional view illustrating another example of the pressure discharge hole of FIG. 10.
13 is an enlarged cross-sectional view showing a pressure discharge hole formed as an inlet hole and a radiation hole according to the present invention.
14 is a view showing another shape of the radiation hole according to the present invention.
15 is a cross-sectional view showing an example in which the inner diameters of the pressure discharge holes are formed in different sizes according to the present invention.
16 is a plan view showing another example of a plate body according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings so that those of ordinary skill in the art may easily implement the present invention.

The present invention may be implemented in various forms and is not limited to the embodiments described herein.

In order to clearly describe the present invention, parts irrelevant to the description are omitted, and the same reference numerals are attached to the same or similar components throughout the specification.

Hereinafter, it means that an arbitrary configuration is provided or arranged on the "upper (or lower)" or "upper (or lower)" of the substrate, wherein the arbitrary configuration is provided or arranged in contact with the upper (or lower) surface of the substrate. Means that.

In addition, it is not limited to not including other configurations between the substrate and any configuration provided or disposed on (or under) the substrate.

1 is a perspective view showing a variable pressure device having a diffuser unit for removing bubbles according to the present invention.

Referring to Figure 1, the variable pressure device according to the present invention has a diffuser unit 200 for removing air bubbles.

The variable pressure device includes a main body 100. A panel 10 is located inside the main body 100. A film is attached to the upper surface of the panel 10. The panel 10 as described above may be seated on the tray 120 installed in the main body 100 in a sliding manner and positioned in the inner space of the main body 100.

A pressure providing pipe 110 is installed on the upper end of the main body 100. One end of the pressure providing pipe 110 is connected to the upper end of the main body 100 to provide pressure to the inner space of the main body 100.

A diffuser unit 200 according to the present invention is disposed on an upper wall of the inner space of the main body 100.

It is preferable that the diffuser unit 200 is located above the panel 10 located inside the main body 100.

The diffuser unit 200 serves to diffuse and supply the pressure supplied from the pressure providing pipe 110 to the upper surface of the panel 10.

2 is a plan view showing a plate body according to the present invention. 3 is a cross-sectional view showing the plate body of FIG. 2. 4 is a cross-sectional view showing a first example of the diffuser unit of the present invention.

2 to 4, the diffuser unit 200 including the main body 100 according to the present invention includes a first plate body 210 and a plurality of first pressure discharge holes 220.

A first pressure supply hole 120 connected to the pressure supply pipe 110 is formed in the body 100. In the position where the pressure supply hole 120 is formed, an installation groove 130 in which the first plate body 210 is fitted and installed is formed on the inner upper wall of the main body 100,

The first plate body 210 has a certain thickness and is formed in a disk shape.

The plurality of first pressure discharge holes 220 are disposed radially around the plate body 210, and are formed through the top and bottom of the plate body 210. The first pressure discharge holes 220 diffuse the pressure supplied from the pressure discharge pipe 110 downward so that the pressure is concentrated and supplied to a plurality of locations on the upper surface of the panel.

Accordingly, the air bubbles formed between the panel and the film may be finely divided into a predetermined size and removed as pressure is intensively supplied to a plurality of positions on the upper surface of the panel as described above.

5 is a cross-sectional view showing a second example of the diffuser unit according to the present invention.

Referring to FIG. 5, the diffuser unit 400 according to the present invention has a main body 100 and a second plate body 410 installed on the main body 100. The second plate body 410 is formed in a ring shape, and is installed by being fitted into a fitting groove 140 formed in the body 100. Second pressure discharge holes 420 are perforated in the second plate body 410. The inner diameter of each of the second pressure discharge holes 420 extends from the top to the bottom.

The inner periphery of each of the second pressure discharge holes 420 is a first hole 421 having a constant inner diameter, and a second hole 422 whose inner diameter gradually expands downward from the lower end of the first hole 421 ).

In addition, a fixing member 150 is installed on the upper end of the main body 100. A pressure providing pipe 110 is connected to the fixing member 150. The fixing member 150 is located at an upper end of the second pressure discharge hole 420. The fixing member 150 fixes the second plate body 410 through a fastening means such as a bolt.

Therefore, the pressure air supplied through the pressure supply pipe 110 flows along the first hole 421, and flows along the second hole 422 through the lower end of the body 100 so that it spreads downward. Is supplied to the space.

In this way, the pressure air supplied by spreading to a certain area is supplied to the upper surface of the panel disposed inside the main body 100.

Accordingly, the air bubbles formed between the panel and the film may be finely divided into a predetermined size and removed as pressure is supplied to a plurality of locations on the upper surface of the panel as described above.

6 is an exploded cross-sectional view showing a third example of the diffuser unit according to the present invention. 7 is a combined cross-sectional view showing a third example of the diffuser unit according to the present invention.

6 and 7, a third example of the diffuser unit 500 according to the present invention includes a main body 100 and a first and second plate bodies 210 and 410.

As described above, a fitting groove 140 is formed in the main body 100. The second plate body 410 is inserted into the fitting groove 140 and fixed. The second plate body 410 is fixed through the above-described fixing member 150 and fastening means. The fixing member 150 is located on the upper end of the main body 100.

Here, an installation groove 130 is formed on the inner upper wall of the main body 100. The above-described first plate body 210 is fitted and fixed to the installation groove 130.

The first plate body 210 is disposed below the second plate body 410.

Here, first pressure discharge holes 220 are formed in the first plate body 210. Second pressure discharge holes 420 are formed in the second plate body 410. The inner diameter of the second pressure discharge hole 420 extends from the top to the bottom. Preferably, as described above, the second pressure discharge hole 420 is formed of a first hole 421 and a second hole 422. The second hole 422 is connected to the lower end of the first hole 421 and is formed such that the inner diameter gradually expands downward.

The first plate body 210 is fixed to the installation groove 130 and is disposed at the lower end of the second pressure discharge hole 420. Accordingly, the first pressure discharge hole 220 formed in the first plate body 210 communicates with the second pressure discharge hole 420.

According to its structure, the pressure air supplied through the pressure providing pipe 110 is introduced into the first hole 421 of the second pressure discharge hole 420. Then, as it flows along the second hole 422, it gradually diffuses. Subsequently, the gradually diffused pressure air may be discharged into the inner space of the main body 100 through the first pressure discharge holes 220 formed in the first plate body 210.

In this way, the pressure air discharged through the first pressure discharge holes 220 is supplied to a plurality of positions on the upper surface of the panel disposed inside the main body 100.

Accordingly, the air bubbles formed between the panel and the film may be divided into a predetermined size and removed as pressure is intensively supplied while spreading downward to a plurality of locations on the upper surface of the panel as described above.

8 is a cross-sectional view showing another example of pressure discharge holes according to the present invention. 9 is a plan view showing a state in which a panel is disposed under the diffuser unit according to the present invention.

8 and 9, the diffuser unit 200 according to the present invention is disposed on the panel 10. In addition, the area of the plate body 210 constitutes an area included in the area of the panel 10.

In addition, each of the plurality of pressure discharge holes 220 ′ according to the present invention has an upper end exposed to the upper surface of the plate body 210, an inlet hole 221 having a uniform inner diameter, and a lower end of the inlet hole 221. Doedoe connected to, it may include a radiation hole 222 formed to gradually increase the inner diameter from the top to the bottom.

The diameter of the inlet hole 221 is uniform, and the radiation hole 222 connected to the lower end thereof is formed in a shape that opens along the bottom.

Accordingly, the pressure introduced into the inlet holes 221 may be introduced at a constant high speed, and may be supplied so as to spread downward while flowing into the radiation hole 222. Here, the cross-sectional area of the inlet hole 221 is formed relatively smaller than the cross-sectional area of the radiation hole 222. And the pressure is proportional to the cross-sectional area of the hole, and the velocity of the fluid passing through the hole is inversely proportional to the cross-sectional area of the hole.

Accordingly, the speed of the pressure air may be discharged while spreading through the radiation hole 222 at a speed higher than the speed at the inlet hole 221 than at the radiation hole 222.

By this configuration, the pressure at a plurality of positions on the upper surface of the panel 10 disposed below the diffuser unit 200 acts to spread along the outer direction at the center of each point, while the air bubbles can be split and removed.

Through this, air bubbles formed in a plurality of positions between the upper surface of the panel 10 and the film can be efficiently removed.

10 is a plan view showing another example of a diffuser unit according to the present invention. 11 is a cross-sectional view taken along line B-B of FIG. 10.

10 and 11, another example of the diffuser unit 300 of the present invention may be substantially the same as the example of the diffuser unit 200 described above. The diffuser unit 300 may include a body 100 as described above.

However, the inner diameters of the plurality of pressure discharge holes 320 are formed smaller than the inner diameters of the pressure discharge holes 220 according to an example of the diffuser unit 200, and the number of holes is also formed in a certain number or more.

In addition, the plurality of pressure discharge holes 320 are disposed along different radial paths at the center of the plate body 310, and may be disposed to be staggered from each other.

14 is a cross-sectional view showing another example of the pressure discharge hole of FIG. 11. 13 is an enlarged cross-sectional view showing a pressure discharge hole formed as an inlet hole and a radiation hole according to the present invention.

12 and 13, each of the plurality of pressure discharge holes 320 ′ has an upper end exposed on the upper surface of the plate body 310, an inlet hole 321 having a uniform inner diameter, and the inlet hole ( Doedoe connected to the lower end of the 321, it may include a radiation hole 322 formed to gradually increase the inner diameter from the top to the bottom.

The diameter of the inlet hole 321 is uniform, and the radiation hole 322 connected to the lower end thereof is formed in a shape that opens along the lower side.

Accordingly, the pressure flowing into the inlet holes 321 may be introduced at a constant high speed, and may be supplied to spread downward while flowing into the radiation hole 322.

By this configuration, the pressure at multiple locations on the upper surface of the panel 10 disposed below the diffuser unit 300 is applied to spread along the outer direction at the center of each point.

Through this, air bubbles formed at multiple locations between the upper surface of the panel and the film can be efficiently removed.

In addition, referring to FIG. 13, installation holes 311 may be formed in the plate body 310 according to the present invention.

Blocks 301 may be inserted into each of the installation holes 311 to be fastened by a separate fastening means 1.

And each block 301 is formed with a pressure discharge hole (320') according to the present invention.

Through this, it is possible to achieve a structure in which the blocks 301 in which the pressure discharge holes 320 ′ are formed are inserted into each of the corresponding installation holes 311.

In the present invention, the blocks 301 in which the pressure discharge holes 320 ′ are formed are inserted and installed in the installation holes 311 of the plate body 310 to be detachable. In addition, there is an advantage in that the pressure discharge holes 320 ′ having different hole sizes can be selectively implemented in the plate body.

14 is a view showing another shape of the radiation hole according to the present invention.

Referring to FIG. 14, the inner periphery of the radiation hole 322 according to the present invention has a first inner periphery 322a facing the center side of the plate body 310, and a second inner periphery facing the edge side of the plate body 310. It includes the inner periphery 322b.

The inclination of the first inner periphery 322a of each of the radiation holes 322 may be formed gradually and gently along the edge from the center of the plate body 310.

Through this configuration, the pressure injected through the radiation holes 322 may form a pressure flow along the edge from the center of the upper surface of the panel 10.

Accordingly, air bubbles formed between the film 11 and the panel 10 may be gradually removed due to a pressure flow obliquely along the edge of the panel 10.

15 is a cross-sectional view showing an example in which the inner diameters of the pressure discharge holes are formed in different sizes according to the present invention.

Referring to FIG. 15, the inner diameter size of the pressure discharge holes 320 according to the present invention may be formed to gradually increase from the center of the plate body 310 along the edge.

Here, the pressure discharge holes 320" may be cylindrical holes having a constant inner diameter or may be holes whose inner diameter gradually widens along the lower side.

In the latter case, both the upper hole diameter and the lower hole diameter may be formed to gradually increase from the center of the plate body 310 along the edge.

In addition, only the lower hole diameter may be formed to gradually widen from the center of the plate body 310 along the edge, and when the pressure discharge holes 320" are cylindrical holes, only the hole diameter of the side It may be formed to gradually widen from the center of 310 along the edge.

According to the configuration, the pressure flowing into the upper side of the pressure discharge holes 320" is discharged through the lower side, but the pressure supply speed may be faster at the center side than the outer side of the panel 10.

16 is a plan view showing another example of a plate body according to the present invention.

Referring to FIG. 16, the plate body 310 ′ according to the present invention may include ring-shaped unit plate bodies 310a having different diameters.

Here, the unit plate bodies 310a may be configured to be sequentially coupled.

Through this, it is possible to adjust the area to which pressure can be supplied according to the central reference of the plate body 310a and the number of couplings of the unit plate body 310a, which variably corresponds to the size of the panel and thus the body according to the present invention There may be an advantage of being able to replace it.

In addition, although not shown in the drawing, the inner peripheral surface of the radiation hole may be formed in a convex shape toward the inside.

In addition, a vortex-shaped groove is further formed in the inner periphery of the inlet hole and the radiation hole, so that the pressure discharge speed may be improved to a certain level or more while maintaining the same inner diameter.

In addition, the upper surface of the plate body may form a concave curved surface along the edge at the center of the plate body. Through this, the pressure supplied from the pressure providing pipe may be concentrated in the upper space of the plate body and then supplied to the upper part of the panel through the pressure discharge holes.

Through the above configuration and action, the embodiment according to the present invention induces pressure air provided from the outside toward the upper surface of the panel to which the film is attached to the upper surface of the panel, but the pressure air acts on the center and other areas of the panel. By controlling the speed to be formed, air bubbles formed in multiple locations on the upper surface of the panel can be efficiently removed.

As described above, specific embodiments related to the present invention have been described, but it is obvious that various implementation modifications are possible within the limit not departing from the scope of the present invention.

Therefore, the scope of the present invention is limited to the described embodiments and should not be transmitted, and should be defined by the claims and equivalents as well as the claims to be described later.

That is, the above-described embodiments are to be understood as illustrative in all respects and not limiting, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and their equivalents All changes or modifications derived from the concept should be interpreted as being included in the scope of the present invention.

100: main body
110: pressure supply pipe
200, 300, 400, 500: diffuser unit
210, 310: plate body
220, 320: pressure relief hole

Claims (9)

A body in which a panel to which a film is attached is accommodated; And,
Including; a diffuser unit disposed on the upper end of the main body and supplying pressure air provided from the pressure providing pipe to the inside of the main body,
The diffuser unit,
A second plate body that is fitted into a fitting groove formed at the upper end of the body and has a second pressure discharge hole,
It has a first plate body fitted in an installation groove connected to the lower end of the fitting groove in the inner upper wall of the main body, formed in a disk shape, and formed with a plurality of first pressure discharge holes,
It is disposed on the upper portion of the second plate body fitted in the fitting groove and fixed to the upper end of the main body so as to be connected to the pressure providing pipe, and has a fixing member for supplying the pressure air to the second pressure discharge hole,
The first plate body and the second plate body are arranged to be stacked so that the upper surface of the first plate body is arranged to be in close contact with the bottom surface of the second plate body,
The second pressure discharge hole is exposed to the plurality of first pressure discharge holes,
The thickness of the second plate body is formed thicker than the thickness of the first plate body,
The first plate body is formed in a disk shape,
The plurality of first pressure discharge holes are disposed along different radial paths at the center of the first plate body, and are disposed to be staggered from each other,
Each of the plurality of second pressure discharge holes,
An inlet hole having an upper end exposed on the upper surface of the second plate body and having a uniform inner diameter,
Doedoe connected to the lower end of the inlet hole, including a radiation hole formed so that the inner diameter gradually widens from the top to the bottom,
The lower end of the inlet hole and the upper end of the radiation hole are connected to each other by forming a curvature,
The width of the first plate body,
It is formed to be a certain width wider than the width of the inlet hole of the second plate body,
The inner diameter of the installation groove is formed larger than the inner diameter of the fitting groove, and a stepped step is formed between the fitting groove and the installation groove,
In the lower open area of the radiation hole, the plurality of first pressure discharge holes are included,
The pressure air is introduced and diffused through the plurality of second pressure discharge holes of the second plate body, and the diffused pressure air of the main body through the plurality of first pressure discharge holes of the first plate body. Variable pressure device, characterized in that the supply while being distributed to the inside.
delete delete delete delete delete The method of claim 1,
The first plate body,
Including ring-shaped unit plate bodies having different diameters,
The unit plate bodies are configured to be sequentially combined,
A variable pressure device, characterized in that an area to which pressure can be supplied is adjusted according to a center reference of the first plate body and the number of combination of the unit plate bodies to variably correspond to the size of the panel.
The method of claim 1,
The upper surface of the first plate body,
By forming a concave curved surface along the rim of the first plate body at the center of the first plate body,
After concentrating the supplied pressure air in the upper space of the first plate body, the variable pressure device is supplied by distributing it to the interior of the body through the plurality of first pressure discharge holes.
delete

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