KR101436810B1 - Film coating apparatus and coating method using the same - Google Patents

Abstract

The present invention relates to a film coating apparatus and a coating method using the same, and more particularly, to a method for coating an ITO film and an OCA film on a touch screen panel, The present invention relates to a film coating apparatus and a coating method of a new structure capable of improving productivity by reducing defective products. The present invention for this purpose is directed to a film forming apparatus comprising a rotating unit rotatably provided on a frame to temporarily fix a first film and a second film provided on one side of the rotating unit and temporarily moving the second film to a lower end of the rotating unit, And a second film that is provided on the other side of the rotation unit and moves to the lower end of the rotation unit while temporarily fixing the second film, And a second moving unit for coating the film.

Description

[0001] The present invention relates to a film coating apparatus and a coating method using the same,

The present invention relates to a film coating apparatus and a coating method using the same, and more particularly, to a method for coating an ITO film and an OCA film on a touch screen panel, The present invention relates to a film coating apparatus and a coating method of a new structure capable of improving productivity by reducing defective products.

Generally, various electronic apparatuses are provided with input devices for inputting data and output devices for outputting data. As such an input device, a key button device or the like is used, and a display device including an LCD module is used as an output device.

In recent years, a touch screen panel device has been widely used in which input and output of data can be performed at the same position in order to diversify functions while reducing the volume of electronic devices. In this touch screen panel device, the transparent touch panel is disposed on the top of the LCD module, so that the input and the output are made at the same position.

Types of touch screen panels include resistive touch panels, capacitive touch panels, ultrasonic touch panels, optical (infrared) touch type touch panels, and electromagnetic induction type touch panels.

Among the capacitive touch panels, an ITO (Indium Tin Oxide) film for sensing the user's touch is provided under the transparent window, and OCA (Optical Clear Adhesive) for adhesion is provided between the transparent window and the ITO film And a liquid crystal panel (LCD) is bonded to the bottom of the ITO film.

However, according to the conventional film coating apparatus, since one ITO film and one OCA film are coated, another ITO film and OCA film must be coated, resulting in a problem of low yield.

In addition, in the process of bonding or coating the ITO film and the OCA film, there is a problem that the foreign matter or the air layer flows between the ITO film and the OCA film, or adhesion failure occurs, resulting in low productivity.

In addition, in the case of a large panel, it is difficult to accurately align the ITO film with the OCA film when the ITO film and the OCA film are coated, thus causing a problem of coating failure.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to improve the productivity by increasing the yield when coating the ITO film and the OCA film.

It is another object of the present invention to improve the productivity by minimizing the defect rate caused by the inflow of foreign matter or the insertion of the air layer when coating the ITO film and the OCA film.

Another object of the present invention is to minimize the occurrence of coating defects by inspecting the alignment state between the ITO film and the OCA film when coating the ITO film and the OCA film.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a film forming apparatus including a rotating unit rotatably provided on a frame and temporarily fixing a first film, and a second film provided on one side of the rotating unit, A first moving unit which moves to the lower end and coats the first film of the rotating unit with the second film, a second moving unit which is provided on the other side of the rotating unit and moves to the lower end of the rotating unit while temporarily fixing the second film, And a second moving unit for coating the first film with the second film.

The first moving unit and the second moving unit include a base plate on which a plurality of suction holes are formed and on which the second film is temporarily fixed, A guide plate for guiding a suction force to the suction hole and hinged to the base plate, a moving means for moving the base plate to a lower end of the rotation unit, and a pressing member fixed to the base plate by a compression roller provided at one side of the base plate And elevating means for elevating one side of the base plate so that the second film is in close contact with the first film of the rotation unit.

And a compression roller is provided at the opposite end of the base plate hinged to the guide plate.

The rotating unit includes a base, a first plate provided on the upper side of the base and having a plurality of suction holes, a second plate provided below the base and having a plurality of suction holes, And a guide plate guiding the suction force generated by the suction means to be transmitted to the suction holes of the first plate or the second plate.

The guide plate and the guide plate may be formed with lattice-shaped guide grooves at positions corresponding to the suction holes and the suction holes so that the suction force generated by the suction means is transmitted to the suction holes and the suction holes.

And a vision camera for inspecting a seating state between a first film temporarily fixed to the first plate or the second plate and a second film temporarily fixed to the first moving unit or the second moving unit, .

It is preferable that a dust removing device is further provided on one side of the frame so that no foreign matter is inserted when the first film and the second film are coated.

A coating method according to an embodiment of the present invention includes a first fixing step of temporarily fixing a first film to a first plate of a rotating unit and a second fixing step of temporarily fixing a second film to a first moving unit provided on one side of the rotating unit, A rotating step of rotating the rotating unit with the first film temporarily fixed to the first plate, a second step of temporarily fixing the second film temporarily fixed to the first moving unit to the first plate, A third fixing step of temporarily fixing the first film to the second plate of the rotating unit and a second fixing step of fixing the second film to the second moving unit provided on the other side of the rotation unit, A rotating step of rotating the rotating unit while temporarily fixing the first film to the second plate, a second step of temporarily fixing the second film temporarily fixed to the second moving unit to the second plate, A second coating to coat the fixed first film And in that it comprises a system with technical features.

The first coating step may include a moving step of moving the second film to the lower side of the rotating unit while the second film is temporarily fixed to the first moving unit, 2 lifting the base plate of the first moving unit so that one side of the film is pressed on one side of the first film so that the base plate of the first moving unit is inclined, To the original position.

The method may further include, after the moving step, inspecting an alignment state of the first film and the second film.

And a descending step of moving one side of the base plate downward after the first moving unit is restored to its original position.

And the second coating step includes a moving step of moving the second film to the lower side of the rotating unit while the second film is temporarily fixed to the second moving unit, 2 is lifted so that one side of the film is tilted so that the base plate of the first moving unit is tilted so as to be pressed on one side of the first film, the second film is coated on the first film in a state where the base plate is inclined, To the original position.

The method may further include, after the moving step, inspecting an alignment state of the first film and the second film.

And a descending step of moving one side of the base plate downward after the second moving unit is restored to its original position.

According to an embodiment of the present invention as described above, since the mobile unit having the OCA film temporarily fixed on both sides of the rotation unit in which the ITO film is temporarily fixed is provided, when the ITO film and the OCA film are coated, It has an effect that can be increased.

The OCA film temporarily fixed to the movable unit is coated on the ITO film in a state in which one side of the movable unit is raised by the elevating means so that an air layer is formed between the ITO film and the OCA film, It is possible to prevent the occurrence of the problem.

In addition, by providing a vision camera capable of inspecting the alignment state of the ITO film and the OCA film inside the rotation unit, it is possible to prevent interference between the camera and the operator due to the work state of the operator.

In addition, since the ion generator is provided on one side of the frame, it is possible to prevent foreign matter from being inserted during coating of the ITO film and the OCA film to prevent coating defects.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, It should not be construed as limited.
FIG. 1 is a perspective view showing the construction of a film coating apparatus according to an embodiment of the present invention,
FIG. 2 is a perspective view showing a configuration of a rotation unit according to an embodiment of the present invention, FIG.
3 is a perspective view showing the configuration of a guide plate according to an embodiment of the present invention,
4 is a perspective view illustrating a configuration of a mobile unit according to an embodiment of the present invention,
5 is a side view showing a configuration of a mobile unit according to an embodiment of the present invention,
FIG. 6 is a perspective view showing the structure of a lifting unit according to an embodiment of the present invention,
7 is a flowchart illustrating a film coating process according to an embodiment of the present invention.
8 is a flowchart specifically illustrating a coating process according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. In addition, the embodiment described below does not unduly limit the content of the present invention described in the claims, and the entire structure described in this embodiment is not necessarily essential as the solution means of the present invention.

≪ Configuration of Film Coating Apparatus &

1 is a perspective view of a film coating apparatus according to an embodiment of the present invention. As shown in the figure, a film coating apparatus 1 according to an embodiment of the present invention includes a rotation unit 200 provided at the center of a frame 100 to temporarily fix an ITO film, And a second moving unit 400 provided on the other side of the rotation unit 200 for temporarily fixing the OCA film. The first moving unit 300 temporarily fixes the OCA film.

In addition, a suction means (not shown) for generating a vacuum pressure to temporarily fix the ITO film and the OCA film is provided in the frame 100. As an example of the suction means, a vacuum pump or the like may be used. A vacuum pump means a compressor used to suck and discharge gas at atmospheric pressure or lower. Such a vacuum pump is generally used in the technical field to which the present invention belongs, and a detailed description thereof will be omitted.

Meanwhile, a vibration damper 110 such as an ion generator may be provided on one side of the frame 100. In the course of coating the ITO film and the OCA film through the vibration eliminator 110, it is possible to prevent foreign substances such as dust from flowing between the ITO film and the OCA film, thereby minimizing occurrence of coating defects.

<Configuration of Rotating Unit>

Next, the specific configuration of the rotation unit 200 will be described. FIG. 2 is a perspective view of the configuration of the rotation unit 200 according to an embodiment of the present invention.

As shown in the drawing, the rotating unit 200 includes a base 210, a first plate 220 provided on the upper side of the base 210 and having a plurality of suction holes 222, And a suction force generated in the suction means provided inside the frame 100 is transmitted to the first plate 220 and the second plate 240 To be guided to the suction hole (222) of the guide plate (22).

One side of the base 210 is coupled to a rotation shaft 270 of the frame 100 and the other side of the base 210 is coupled to the rotation motor 260 to be rotatable according to the operation of the rotation motor 260.

The ITO film is temporarily fixed on the upper surface of the first plate 220 provided on one side of the base 210. The guide plate is provided at the lower end of the first plate 220.

The vacuum pressure generated in the vacuum pump provided in the frame 100 is applied to the suction hole of the first plate 220 through the guide plate 230 222, respectively. The ITO film is temporarily fixed by sucking the ITO film placed on the upper surface of the first plate 220 by the vacuum pressure transferred to the suction hole 222.

3, the structure of the guide plate 230 will be described in detail.

The guide plate 230 is formed in a substantially plate-like shape and is provided at a lower end of the first plate 220. At this time, the first plate 220 and the guide plate 230 are tightly coupled so that the vacuum pressure generated in the vacuum pump does not leak to the outside.

On the upper surface of the guide plate 230, grid-shaped guide grooves 232 are formed at positions corresponding to the plurality of suction holes 222 formed in the first plate 220. As described above, the guide plate 230 has a grid-shaped guide groove 232 formed therein. The vacuum pressure generated by the vacuum pump is transmitted to the first plate (not shown) through the guide groove 232 of the guide plate 230 The vacuum pressure can be uniformly transmitted to the suction holes 222 formed in the first and second suction holes 220 and 220.

Accordingly. Since the vacuum pressure is uniformly applied to the entire surface of the ITO film temporarily fixed on the upper surface of the first plate 220, the ITO film can be stably attached to the upper surface of the first plate 220.

Referring to FIG. 2 again, a second plate 240 having the same configuration as the first plate 220 is provided on the other side of the base. The ITO film is temporarily fixed to the outer surface of the second plate 240. To this end, another guide plate 230 having the same structure as the guide plate 230 described above is provided at the lower end of the second plate 240.

The coupling relationship and action of the second plate 240 and the guide plate 230 are substantially the same as those of the first plate 220 and the guide plate 230, and the specific configuration thereof is the same as described above.

Inside the base 210, a vision camera 280 for detecting the alignment state of the ITO film and the OCA film is provided. By providing the vision camera 280 inside the base 210 as described above, the worker does not interfere with the shooting area of the vision camera 280, and the alignment state of the ITO film and the OCA film is maintained So that it can be inspected quickly and accurately.

<Configuration of Mobile Unit>

Next, the configuration of the mobile unit 300 will be described. FIG. 4 is a perspective view of a configuration of a mobile unit 300 according to an embodiment of the present invention, and FIG. 5 is a side view of a configuration of a mobile unit 300 according to an embodiment of the present invention.

Referring to the drawings, the mobile unit 300 includes a base plate 310 having a plurality of suction holes 312 formed therein and temporarily fixing an OCA film thereon, A guide unit 320 for guiding the vacuum pressure generated in the suction unit provided in the vacuum cleaner 100 to the suction hole 312, a moving unit 340 for moving the base plate 310 to the lower end of the rotation unit 200, The OCA film temporarily fixed to the base plate 310 is pressed against the ITO film of the rotation unit 200 by a pressing roller 314 provided on one side of the base plate 310. [ And a lifting means (350) for lifting one side of the lifting means

The base plate 310 is formed in a plate shape, and the OCA film is temporarily fixed on the upper surface. The guide plate 320 is tightly coupled to the lower end of the base plate 310.

At this time, the base plate 310 and the guide plate 320 are hinged through the moving hinge 322. When one side of the base plate 310 is lifted by the lifting means 350 to be described later, The base plate 310 can be maintained in a tilted state while the base plate 310 rotates about the moving hinge 322. [

Vacuum pressure generated in the vacuum pump provided inside the frame 100 is transmitted through the suction hole 312 of the base plate 310 through the guide plate 320 to be seated on the front surface of the base plate 310 The OCA film is temporarily fixed by sucking the OCA film. The structure of the guide plate 320 is substantially the same as that of the base plate described above, and a detailed description thereof will be omitted.

A pressing roller 314 is provided on the left end of the base plate 310, specifically, on the opposite side to the moving hinge 322. The pressing roller 314 coats the OCA film with the ITO film to coat the OCA film.

A moving means 340 for moving the base plate 310 and the guide plate 320 horizontally is provided at the lower end of the base plate 310. The moving means 340 is provided on a sliding plate 330 which horizontally moves along the frame 100. Examples of the moving means 340 include an LM Guides, and the like.

And a lifting unit 350 for lifting one side of the base plate 310 is provided at one side of the sliding plate 330.

The configuration of the elevating means 350 will be described in detail with reference to FIG. As shown in the figure, the elevating means 350 includes a pair of lower inclined plates 351 provided on one side of the sliding plate 330, and an upper inclined plate 353 provided on the upper side of the lower inclined plate 351 And an upper plate 355 which is vertically movable on the upper side of the upper swash plate 353.

The lower swash plate 351 is formed in the shape of a right triangle in section, and the upper slope 352 is formed on the upper side. The lower swash plate 351 is connected to the elevating motor 354 so that the lower swash plate 351 horizontally moves in the left and right direction as the elevating motor 354 operates.

The upper swash plate 353 is formed in a right triangle shape in section and a lower slanted surface 354 is formed in the lower side. The lower inclined plane 353 of the upper inclined plate 353 is slidably slidable with the upper inclined plane 352 of the lower inclined plate 351 so that the upper inclined plate 353, And moves in the vertical direction.

Two projecting rods 357 and 357 'are provided on the front and rear sides of the upper plate 355 provided on the upper side of the upper swash plate 353. The protruding rods 357 and 357 'are raised and the protruding rods 357 and 357' push up one side of the base plate 310. As a result, (310) is rotated about the moving hinge (322) and is inclined.

&Lt; Coating Process of Film >

Hereinafter, the film coating process according to one embodiment of the present invention will be described in detail.

Referring to FIG. 7, the ITO film is temporarily fixed to the first plate 220 of the rotation unit 200 (S10).

Then, the OCA film is temporarily fixed to the base plate 310 of the first moving unit (S20). At this time, it is preferable that the OCA film is placed so as to overlap with the pressing roller 314. Specifically, it is preferable that the tip of the OCA film is located slightly out of the center of rotation of the pressing roller 314.

Next, the rotation unit 200 is rotated 180 degrees so that the first plate 220 is positioned downward and the second plate 240 is positioned upward (S30).

Another ITO film is temporarily fixed to the second plate 240 of the rotation unit 200 because the first plate 220 of the rotation unit 200 is moved downward in step S40.

The OCA film is temporarily fixed to the base plate 310 of the second moving unit 400 (S50).

Then, the OCA film temporarily fixed to the first moving unit is coated on the ITO film temporarily fixed to the first plate 220 (S60).

More specifically, step S60 will be described with reference to FIG.

First, the first moving unit 300 in which the OCA film is temporarily fixed is moved to the lower end of the rotation unit 200 (S61). At this time, the base plate on which the ITO film is temporarily fixed and the base plate of the first moving unit on which the OCA film is temporarily fixed face each other.

Then, the alignment state of the ITO film and the OCA film is inspected using a vision camera provided in the base 210 (S63). If the alignment between the ITO film and the OCA film is poor, temporarily fix the ITO film and the OCA film again.

Next, the upper plate 355 is raised so that one side of the base plate 210 is inclined (S65).

More specifically, when the lower swash plate 351 is moved to the right with reference to the drawing by the driving of the lifting motor 354, the upper swash plate 353 slidably coupled with the lower swash plate 351, As shown in FIG. That is, as the lower swash plate 351 moves, the upper swash plate 353 relatively moves, and the upper swash plate 353 moves upward.

The upper plate 355 coupled to the upper side of the upper swash plate 353 is moved upward and the projecting bar protruding from the upper plate 355 pushes up the base plate 310, One side is inclined. The front end of the OCA film placed so as to overlap the pressing roller 314 provided at one end of the base plate 310 as the base plate 310 is tilted and the front end of the OCA film placed on top of the first plate 220, The front end of the film is in a state of close contact.

Next, the moving unit 340 moves the first moving unit 300 to the original position with the front end of the OCA film closely attached to the front end of the ITO film (S67). The OCA film temporarily fixed to the base plate 310 is sequentially coated on the ITO film temporarily fixed to the first plate 220 by the pressing roller 314 as the mobile unit moves to the original position.

That is, according to the present invention, the OCA film and the ITO film are not coated on the face-to-face but adhered to each other on the face-to-face line. As described above, coating two films with a face-to-face line can prevent an air layer or foreign matter from flowing between the two films, as compared with the case where the two films are coated on the face-to-face basis, .

Finally, when the first moving unit 300 moves to the original position, the elevating motor 354 is driven to descend the base plate 310 to the original horizontal state (S69).

7, after the first moving unit 300 moves to its original position, the rotating unit 200 is rotated 180 degrees so that the second plate 240 is positioned downward, 1 so that the plate 220 is positioned upward (S70).

Finally, the OCA film temporarily fixed to the second moving unit is coated on the ITO film temporarily fixed to the second plate 240 (S80). At this time, the step S80 is performed in the same manner as the step S60 described above, so a detailed description will be omitted.

In the embodiment of the present invention, the steps S40 to S60 are sequentially performed for the sake of convenience of description. Actually, the steps S40 to S60 are performed substantially at the same time.

As described above, according to the film coating method of the present invention, since the moving units are provided on the left and right sides of the rotation unit 200, the ITO film temporarily fixed on the first plate 220 and the first moving unit The OCA film can be temporarily fixed to the second moving unit 400 while the ITO film is temporarily fixed to the second plate 240 during the coating of the OCA film temporarily fixed to the second moving unit 400. Thus, .

Although the present invention has been described with reference to the embodiment thereof, the present invention is not limited thereto, and various modifications and applications are possible. That is, those skilled in the art will readily understand that many modifications are possible without departing from the gist of the invention.

1: Film coating device
100: frame
110: Vibration isolation device
200: rotation unit
201: Base
220: first plate
230: guide plate
240: first plate
300: first mobile unit
310: base plate
320: Signage
330: Moving means
350:
400: second mobile unit

Claims (14)

A rotating unit 200 rotatably provided in the frame 100 to temporarily fix the first film;
A first moving unit 200 disposed at one side of the rotating unit 200 and moving to the lower end of the rotating unit 200 while temporarily fixing the second film 200 to coat the first film of the rotating unit 200 with the second film, (300); And
The second film is coated on the first film of the rotation unit 200 by moving to the lower end of the rotation unit 200 while temporarily holding the second film on the other side of the rotation unit 200. [ (400)
Here, the rotation unit (200)
A base 210;
A first plate 220 provided on the base 210 and formed with a plurality of suction holes 222;
A second plate 240 provided below the base 210 and having a plurality of suction holes 222 formed therein; And
And a guide plate 230 guiding the suction force generated in the suction means provided in the frame 100 to be transmitted to the suction holes 222 of the first plate 220 or the second plate 240 Wherein the film coating apparatus is a film coating apparatus.
2. The apparatus of claim 1, wherein the first mobile unit (300) and the second mobile unit (400)
A base plate 310 on which a plurality of suction holes 312 are formed and on which the second film is temporarily fixed;
A guide plate 320 provided at the lower end of the base plate 310 and guiding the suction force generated by the suction means provided in the frame 100 to the suction hole 312 and hinged to the base plate 310, ,
Moving means (340) for moving the base plate (310) to the lower end of the rotation unit (200);
And a second film temporarily fixed to the base plate 310 is adhered to the first film of the rotation unit 200 by a compression roller provided at one side of the base plate 310, And an elevating means (350) for raising and lowering the film.
3. The method of claim 2,
And a compression roller is provided at the opposite end of the base plate (310) hinged to the guide plate (320).
delete The method of claim 3,
The guide plate 320 and the guide plate 230 correspond to the suction holes 312 and the suction holes 222 so that the suction force generated by the suction means is transmitted to the suction holes 312 and the suction holes 222. [ Wherein a grid-shaped guide groove is formed at a position where the guide groove is formed.
The method according to claim 1,
A first film temporarily fixed to the first plate 220 or the second plate 240 and a second film temporarily fixed to the first moving unit 300 or the second moving unit 400 are provided in the rotating unit 200, And a vision camera for checking a seating state with the second film.
The method according to claim 1,
Further comprising a vibration eliminator (110) on one side of the frame (100) so as to prevent foreign matter from being inserted when the first film and the second film are coated.
A first fixing step of temporarily fixing the first film to the first plate (220) of the rotation unit (200);
A second fixing step of temporarily fixing the second film to the first moving unit (300) provided at one side of the rotation unit (200);
Rotating the rotating unit (200) while the first film is temporarily fixed to the first plate (220);
A first coating step of coating a second film temporarily fixed to the first moving unit (300) to a first film temporarily fixed to the first plate (220);
A third fixing step of temporarily fixing the first film to the second plate (240) of the rotation unit (200);
A fourth fixing step of provisionally fixing the second film to the second moving unit (400) provided on the other side of the rotation unit (200);
Rotating the rotating unit (200) while the first film is temporarily fixed to the second plate (240);
And a second coating step of coating a second film temporarily fixed to the second moving unit (400) to a first film temporarily fixed to the second plate (240).
9. The method of claim 8, wherein the first coating step
A moving step of moving the second film to the lower side of the rotating unit (200) while the second film is temporarily fixed to the first moving unit (300);
The base plate 310 of the first moving unit 300 is inclined by the pressing roller 314 provided on one side of the first moving unit 300 so that one side of the second film is pressed on one side of the first film. A lifting step for lifting the wafer to a predetermined height; And
And a restoring step of moving the first moving unit (300) to an original position so that the second film is coated on the first film while the base plate (310) is inclined.
10. The method of claim 9,
Further comprising the step of inspecting alignment of the first film and the second film after the moving step.
10. The method of claim 9,
Further comprising a descending step of moving one side of the base plate (310) downward after the first moving unit (300) is restored to its original position.
9. The method of claim 8, wherein the second coating step
A moving step of moving the second film to the lower side of the rotating unit 200 while temporarily fixing the second film to the second moving unit 400;
The base plate 310 of the first moving unit 300 is tilted so that one side of the second film is pressed onto one side of the first film by the pressing roller 314 provided at one side of the second moving unit 400 A lifting step for lifting the wafer to a predetermined height; And
And a restoring step of moving the second moving unit (400) to an original position so that the second film is coated on the first film while the base plate (310) is inclined.
13. The method of claim 12,
Further comprising the step of inspecting alignment of the first film and the second film after the moving step.
13. The method of claim 12,
Further comprising a descending step of moving one side of the base plate (310) downward after the second moving unit (400) is restored to its original position.

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