KR20170126215A - Manufacturing apparatus and method of encapsulation film for organic light emitting display device - Google Patents

Abstract

The present invention relates to a manufacturing apparatus and a manufacturing method for an encapsulation film, and in accordance with one aspect of the present invention, the manufacturing method for an encapsulation film including a metal layer and an adhesive film comprises: a combining step of laminating and bonding the metal layer and the adhesive film; and a cutting step of cutting the laminated metal layer and the adhesive film into a requested size. An objective of the present invention is to provide a manufacturing apparatus and a manufacturing method for an encapsulation film which can simplify the process, shorten the tack time for each process, and improve the productivity.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing an encapsulation film,

The present invention relates to an apparatus and a method for producing a sealing film, and more particularly, to an apparatus and a method for producing a sealing film for an organic light emitting display.

An organic electronic device (OED) refers to an apparatus that includes an organic material layer that generates holes and electrons to generate an alternating current. Examples thereof include a photovoltaic device, a rectifier, A transmitter and an organic light emitting diode (OLED).

Organic light emitting diodes (OLEDs) among the above organic electronic devices have a lower power consumption and a faster response speed than conventional light sources, and are advantageous for thinning display devices or illumination. In addition, OLEDs are expected to be applied in various fields covering various portable devices, monitors, notebooks, lighting, and televisions because of their excellent space utilization.

In commercialization of OLEDs and expansion of applications, the main problem is durability. Organic materials and metal electrodes contained in OLEDs are very easily oxidized by external factors such as moisture. Thus, products containing OLEDs are highly sensitive to environmental factors. Accordingly, various methods for effectively blocking the penetration of oxygen or moisture from the outside into organic electronic devices such as OLEDs and the like have been provided.

Further, it is possible to secure the required lifetime in the organic electronic device, thereby securing the required lifetime in the organic electronic device and effectively blocking the penetration of water, and maintaining the reliability under high temperature and high humidity conditions. Development of a sealing film has been demanded.

For example, the sealing film comprises a metal layer and an adhesive film. Further, the adhesive film may include an adhesive layer bonded to the metal layer and a liner film surrounding the adhesive layer. At this time, the metal layer constitutes the first side of the sealing film, and the adhesive film (liner film) constitutes the second side of the sealing film. In the process of attaching the sealing film, the liner film is removed.

At this time, in order to manufacture the sealing film, a process is used in which a metal layer and an adhesive film are separately prepared, and then the metal layer and the adhesive film are individually cut to a required size, and a metal layer and an adhesive film are laminated to each other. Thereafter, since the metal layer and the adhesive film are cut, there is a problem that the product tolerance occurs at the time of lamination bonding.

Further, the sealing film is required to inspect each of the first surface and the second surface, that is, double-sided inspection. At this time, the inspection of the sealing film is performed in the process of conveying through the conveyor, and each inspection of the first surface and the second surface may be performed manually. In addition, after inspection of the first side of the sealing film is completed, the first side and the second side of the sealing film conveyed through the conveyor must be reversed in order to inspect the second side.

At this time, it is necessary to prevent the encapsulation film from being damaged in the process of reversing the encapsulation film, and it is necessary to manage the tack time due to the reversing process.

An object of the present invention is to provide a manufacturing apparatus and a manufacturing method of a sealing film capable of eliminating the lamination tolerance.

It is another object of the present invention to provide an apparatus and a method for manufacturing a sealing film which can simplify the process, shorten the tack time for each process, and improve the productivity.

According to one aspect of the present invention, there is provided a method of manufacturing a sealing film comprising a metal layer and an adhesive film, comprising the steps of: laminating a metal layer and an adhesive film; And a cutting step of cutting the cut film to a size of 1 mm or less.

According to still another aspect of the present invention, there is provided an apparatus for producing a sealing film comprising a metal layer and an adhesive film, comprising: a lamination apparatus for lamination bonding a metal layer and an adhesive film; There is provided an apparatus for producing a sealing film comprising a cutting apparatus for performing a sealing process.

As described above, an apparatus and a method for manufacturing a bag film according to at least one embodiment of the present invention have the following effects.

With respect to the lapping process, the wetting property of the metal layer and the adhesive film can be improved by performing the lamination process so that the metal layer and the metal layer of the sealing film are in contact with each other. In addition, it is possible to prevent the curl defect of the product during the laminating process.

Further, after the lapping process, the lamination tolerance can be eliminated by performing the cutting process, and thereafter, the margin tolerance for the display module process can be provided. Also, by this, securing the bezel of the display product can improve the OLED panel manufacturing yield.

Further, the upper and lower surfaces of the sealing film can be inverted in a flat state by holding each of the both sides (metal layer side and adhesive film side) of the sealing film with the upper belt conveyor and the lower conveyor. As a result, bending or bending is not applied to the encapsulated and cut-off encapsulation film, thereby preventing occurrence of defects or scratches on the encapsulation film during the inversion process.

In addition, the encapsulation film can be continuously inverted in an in-line conveyor system, and the tack time can be shortened during the reversing process.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flowchart for explaining a method for producing a bag film according to an embodiment of the present invention. Fig.
2 is a conceptual diagram for explaining lamination bonding of a sealing film according to the present invention.
3 is a configuration diagram showing an apparatus for producing a bag film according to an embodiment of the present invention.
4 and 5 are views for explaining a lamination apparatus constituting an apparatus for producing a bag film according to an embodiment of the present invention.
6 to 9 are views for explaining an inversion device constituting an apparatus for producing a bag film according to an embodiment of the present invention.

Hereinafter, an apparatus and a method for manufacturing a sealing film according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In addition, the same or corresponding reference numerals are given to the same or corresponding reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown in the drawings are exaggerated or reduced .

FIG. 1 is a flow chart for explaining a method of manufacturing a sealing film according to an embodiment of the present invention, and FIG. 2 is a conceptual diagram for explaining a lamination bonding of the sealing film 200 according to the present invention.

A method of manufacturing a sealing film 220 according to an embodiment of the present invention is a method of manufacturing a sealing film including a metal layer 211 and an adhesive film 212. Specifically, the method for manufacturing the encapsulation film 220 includes a laminating step (S102) of laminating the metal layer (211) and the adhesive film (212) to each other and a step of cutting the lapped metal layer (211) (S104).

2, the encapsulation film 220 for an organic light emitting display includes a metal layer 211 and an adhesive film 212. The adhesive film 212 may include adhesive layers 215 and 214 bonded to the metal layer 211 and a liner film 217 surrounding the adhesive layer. For example, the adhesive layers 215 and 214 may be composed of a plurality of layers made of different materials, and the first layer 215 (e.g., an olefin layer) adjacent to the metal layer 211 and the liner film 213 and an adjacent second layer 214 (e.g., an epoxy layer). The first layer 215 is bonded to the metal layer and the second layer 214 is bonded to the OLED side.

In this document, the metal layer 211 may be referred to as FAM (Face Seal Metal), and the adhesive film 212 may be referred to as FSA (Face Seal Adhesive).

Referring to Figs. 1 and 2, before the laminating process, the metal layer 211 and the adhesive film 212 are separately manufactured. For example, the separately manufactured adhesive film 212 may include a protective layer 216, a first layer 215 provided on the protective layer 216, and a second layer (not shown) provided on the first layer 215 214 and a liner film 213 provided on the second layer 214. Here, the first layer 215 (e.g., an olefin layer) and the second layer 214 (e.g., an epoxy layer) constitute an adhesive layer. During the laminating process with the metal layer 211, the protective layer 216 is removed. That is, in the laminating process, the adhesive film 212 includes a first layer 215 bonded to the metal layer 211, a second layer 214 provided on the first layer 215, and a second layer 214 The liner film 213 is provided on the surface of the liner film 213.

The encapsulation film 220 includes a first layer 215 bonded to the metal layer 211 and the metal layer 211, and a second layer 215 bonded to the metal layer 211. In this case, And a liner film 213 provided on the second layer 214 and the second layer 214 provided on the first layer 215. [ In this document, the metal layer 211 is referred to as the first side of the sealing film 220, and the adhesive film 212 (liner film side) is referred to as the second side of the sealing film 220. Further, in the process of attaching the sealing film to the OLED, the liner film 213 is removed.

A method of manufacturing the encapsulation film 220 according to an embodiment of the present invention includes an FSA coating process (S101) and a roll-to-roll lamination process (S102). When the roll-to-roll lamination process (S102) is completed, a semi-finished product (S103) is produced. Thereafter, the cutting step S104, the primary inspection S105, the reversing process S106, the secondary inspection S107, and the packaging process S108 are included.

3 is a configuration diagram showing an apparatus for producing a bag film according to an embodiment of the present invention.

In order to perform these processes, an apparatus for producing a sealing film 220 according to an embodiment of the present invention is an apparatus for manufacturing a sealing film 220 including a metal layer 211 and an adhesive film 212, A lamination device 40 for lamination bonding the adhesive film 211 and the adhesive film 212 and a cutting device 60 for cutting the laminated metal layer and the adhesive film to a required size.

The FSA coating process (S101) is a process for producing the adhesive film 212, and various known processes can be used.

As described above, after the metal layer 211 and the adhesive film 212 are separately manufactured, the lapping step may be performed through a roll-to-roll process. Through the roll-to-roll lamination process, the metal layer 211 and the adhesive film 212 can be laminated.

In the lapping step, the pair of first and second rolls 46 and 45 for joining the metal layer 211 and the adhesive film 212 may be formed of different materials. The first roll 46 contacting the metal layer 211 (FSM) is formed of a metal material and the second roll 45 contacting the adhesive film 212 (FSA) may be formed of a rubber material.

4 and 5 are views for explaining a lamination apparatus 40 constituting an apparatus for producing a bag film according to an embodiment of the present invention.

Specifically, the lamination apparatus 40 includes a pair of first and second rolls 46 and 45 for joining the metal layer 211 and the adhesive film 212, and the first roll 46 is made of a metal material And the second roll 45 may be formed of a rubber material. The lamination device 40 also includes a supply portion for supplying the metal layer 211 (FSM) and the adhesive film 212 (FSA) between the pair of first and second rolls 46 and 45, It is preferable to supply the metal layer and the adhesive film so that the metal layer 211 is brought into contact with the first roll 46.

In addition, the first roll 46 formed of a metal material may be provided to be adjustable in temperature.

In addition, when the FSM 211 and the FSA 212 are laminated to each other, if the heat is not applied, the metal and the adhesive become uneven. Therefore, during the laminating process, heat must be applied so that the FSM 211 and the FSA 212 are in a sufficiently cemented state. At this time, if heat is directly applied to the adhesive layer side of the adhesive film 212, the FSM 211 and the FSA 212 may be lifted off because the adhesion may be affected. Therefore, the first roll 46 formed of a metal (e.g., SUS) material may be provided so that the temperature can be adjusted so that heat can be directly applied to the FSM 211 side. To this end, the lamination apparatus 40 may be provided with a temperature control unit 48 for controlling the temperature of the first roll 46. For example, the temperature regulating section 48 may be configured to regulate the temperature of the first roll 46 by passing hot water through the first roll 46. [

On the other hand, in the lapping step, if the temperature is too high, the curl of the sealing film may become large after laminating, and if the temperature is too low, the laminated condition of the sealing film may become uneven after laminating. If the lamination speed is too high, the laminated state becomes uneven. If the lamination speed is too low, the productivity is lowered and the curled state is defective. In one embodiment, in the lapping step, the temperature of the first roll 46 can be adjusted to about 50-80 < 0 > C, and the lamination speed can be 2-10 mpm.

Particularly, since the thermal conductivity of the metal is high, the wettability of the metal layer 211 and the adhesive film 212 can be increased during the lamination process. 4, reference numeral 41 denotes an unwinder to which FSM is supplied, 42 denotes an unwinding portion to which FSA is supplied, and 43 denotes a rewinder. It is necessary to adjust the tension of the winding portion and the winding portion, and when the proper tension is not applied, a defective joint state and a curl defect occur. On the other hand, when the curling of the sealing film is not managed, there arises a problem that the cutting dimensions are not matched when the laser is cut.

Further, in the cutting step, the laminated metal layer and the adhesive film can be cut using a laser. For this purpose, the cutting device 60 may include a laser light source.

The manufacturing method of the encapsulating film may include an inspecting step (S105 to S107) of sequentially inspecting both the metal layer and the adhesive film on the laminated and cut-off encapsulating film. The inspecting step may include an inversion step (S106) for exposing the other side of the sealing film to the outside by rotating the sealing film in one direction after inspection of one side of the sealing film is completed.

To this end, the apparatus for manufacturing an encapsulating film further comprises an inspection system for sequentially inspecting both sides of the encapsulation film 220 after completion of the lapping and cutting, And an inverter (100) for rotating the rotor.

FIGS. 6 to 9 are views for explaining an inversion apparatus 100 constituting an apparatus for producing a bag film according to an embodiment of the present invention.

The encapsulation film 10 shown in Figs. 9 and 10 has the same encapsulation film 220 as shown in Fig.

Referring to FIG. 6, the inverting apparatus 100 may include a first conveyor 110, a second conveyor 120, a driving unit 130, and a rotation unit 140.

Specifically, the reversing device 100 includes a first conveyor 110 disposed to face a first surface 11 that is a metal layer (FSM) of the encapsulating film 10, and a second conveyor 110 disposed on the first surface 11 A second conveyor 120 disposed on the first conveyor 110 so as to face a second side 12 (FSA) opposite to the first side 11 of the first conveyor 110, A driving part 130 for driving at least one of the first and second conveyors 110 and 120 and a first and a second conveyors 110 and 120 for reversing the first and second sides 11 and 12 of the sealing film 10. [ 120 to rotate together in a predetermined direction.

The rotation unit 140 may include a base unit 160 on which the first conveyor 110 and the second conveyor 120 are mounted and a motor for rotating the base unit 160. The rotation unit 140 may be provided to rotate the first and second conveyors 110 and 120 together in a clockwise or counterclockwise direction. That is, by rotating the base portion 160, the first and second conveyors 110 and 120 mounted on the base portion 160 are rotated together in the same direction. In addition, the motor of the rotation unit 140 is capable of forward / reverse rotation. 6, reference character C denotes the center of rotation of the base portion 160. In FIG.

Referring to FIG. 6, the conveying direction of the sealing film 10 in this document refers to a direction to be conveyed on a conveyor, which means an x-axis direction, and a rising / falling direction or a vertical direction refers to a direction orthogonal to the conveying direction Which means the y-axis direction.

The first conveyor 110 and the second conveyor 120 are arranged in the base part 160 at predetermined intervals in the vertical direction (y-axis direction). The sealing film 10 is positioned in a conveyor 110 or 120 in a space S between the first conveyor 110 and the second conveyor 120.

At least one of the first conveyor 110 and the second conveyor 120 is adjusted such that the interval between the first conveyor 110 and the second conveyor 120 And a lift control unit 150 for moving up and down the conveyor. The elevation control part 150 may be provided on the base part 160 and may be provided on the side of the first and second conveyors 110 and 120 so as to individually drive the first and second conveyors 110 and 120 . For example, the lift controller 150 may include a hydraulic or pneumatic cylinder. The second conveyor 120 can be made closer to the first conveyor 110 in a state in which the sealing film 10 is placed on the first conveyor 110 through the elevation control unit 150. [ By such a structure, the both surfaces of the sealing film 10 are brought into contact with the first and second conveyors 110 and 120, respectively, so that the flat state of the sealing film 10 can be maintained have.

The first and second conveyors 110 and 120 may be constructed of various types of conveyors. For example, a belt conveyor, a chain conveyor, or a roller conveyor.

In particular, the first and second conveyors 110 and 120 may each comprise a belt conveyor. Specifically, the first conveyor 110 may include a first driving roller 111 connected to receive rotational power from the driving unit 130 (for example, a motor). In addition, the first conveyor 110 may include a first driven roller 112 that is rotatably provided in an idle state. The first conveyor 110 may include at least one first belt 113 wound around the first drive roller 111 and the first driven roller 112. [ The second conveyor 120 may include a second driving roller 121 connected to receive rotational power from the driving unit 130 (for example, a motor). In addition, the second conveyor 120 may include a second driven roller 122 that is rotatably provided in an idle state. In addition, the second conveyor 120 may include at least one second belt 123 wound around the second driven roller 121 and the second driven roller 122.

The inspection system includes the inverting apparatus 100 described with reference to FIG. Specifically, the inspection system comprises a first conveying conveyor 20 for conveying the sealing film 10, a sealing film 10 supplied from the first conveying conveyor 20, and a sealing film 10 A reversing device 100 for reversing the first surface 11 of the reversing device 100 and the second surface 12 opposite to the first surface 11 and the sealing film 10 supplied from the reversing device 100, And a control unit 170 for controlling the reversing device 100. The control unit 170 controls the reversing device 100 and the second conveying conveyor 30, The first conveying conveyor 20, the reversing device 100 and the second conveying conveyor 30 constitute an in-line system along the conveying direction of the sealing film 10. At this time, the first or second conveyors 110 and 120 may be provided at the same height as the first and second conveying conveyors 20 and 30, respectively.

In the inspection system, in the first conveying conveyor 20, the second surface 12 of the sealing film 10 is conveyed while being exposed to the outside, and the first surface 12 of the sealing film 10 is conveyed in the reversing device 100, The first surface 11 of the sealing film 10 is transported to the outside in the second conveying conveyor 30 after the first surface 11 and the second surface 12 are reversed. At this time, the first conveying conveyor 20 is provided so as to perform the function of a first inspection table for inspecting the second surface 12 of the sealing film 10, and the second conveying conveyor 30 is provided for the sealing film The function of the second inspection table for inspecting the first surface 11 of the first inspection surface 10 can be performed.

As described above, the rotation unit 140 is provided to rotate the first and second conveyors 110 and 120 together in a clockwise or counterclockwise direction.

8 and 9, the controller 170 rotates the first and second conveyors 110 and 120 in the clockwise direction once (FIG. 8), and then supplies the next encapsulation film to the reversing unit , And the first and second conveyors 110 and 120 together (Fig. 9) by one rotation in the counterclockwise direction.

When the sealing film 10 is supplied from the first conveying conveyor 20 and the sealing film 10 is positioned between the first conveyor 110 and the second conveyor 120, The elevation control unit 150 can be controlled so that the interval between the first and second conveyors 110 and 120 becomes small. The conveyor 110 and the conveyor 110 are brought into contact with both sides of the sealing film 10 through the elevation control unit 150 so that the flat state can be maintained without bending during the reversing process.

When the sealing film 10 is positioned between the first conveyor 110 and the second conveyor 120 and the operation of the elevation control unit 150 is completed, the controller 170 controls the rotation unit 140 And when the operation of the rotation unit 140 is completed (the process of reversing the sealing film is completed), the driving unit 130 may be operated. Thereafter, in the reversing device 100, the reversed sealing film 10 is supplied to the second conveying conveyor 30.

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention, And additions should be considered as falling within the scope of the following claims.

40: lamination device
60: Cutting device
100: inverting device
220: Encapsulation film

Claims (15)

A process for producing a sealing film comprising a metal layer and an adhesive film,
A laminating step of laminating the metal layer and the adhesive film; And
And cutting the laminated metal layer and the adhesive film to a desired size. The method according to claim 1,
Wherein the lapping step is performed through a roll-to-roll process. 3. The method of claim 2,
And a pair of first and second rolls joining the metal layer and the adhesive film are made of different materials. The method of claim 3,
Wherein the first roll contacting the metal layer is formed of a metal material and the second roll is formed of a rubber material. 5. The method of claim 4,
Wherein the temperature of the first roll is adjustable. The method according to claim 1,
Wherein the laminated metal layer and the adhesive film are cut using a laser. The method according to claim 1,
Further comprising the step of inspecting both the metal layer and the adhesive film on the laminated and cut bag films in order. 8. The method of claim 7,
And a reversing step for exposing the other surface of the sealing film to the outside by rotating the sealing film in one direction when inspection of one surface of the sealing film is completed. The method according to claim 1,
Wherein the adhesive film comprises an adhesive layer bonded to the metal layer and a liner film surrounding the adhesive layer. An apparatus for producing a sealing film comprising a metal layer and an adhesive film,
A lamination device for lamination bonding the metal layer and the adhesive film; And
And a cutting device for cutting the laminated metal layer and the adhesive film to a desired size. 11. The method of claim 10,
Wherein the lamination apparatus comprises a pair of first and second rolls joining a metal layer and an adhesive film, wherein the first roll is formed of a metal material and the second roll is formed of a rubber material. 12. The method of claim 11,
The lamination apparatus includes a supply section for supplying the metal layer and the adhesive film between the pair of first and second rolls,
Wherein the supply portion supplies the adhesive layer and the metal layer such that the metal layer is in contact with the first roll. 11. The method of claim 10,
The cutting apparatus includes a laser light source. 11. The method of claim 10,
Further comprising an inspection system for sequentially inspecting both sides of the bag film after the lapping and cutting in the transporting process,
Wherein the inspection system includes an inversion device for rotating the sealing film in one direction. 15. The apparatus according to claim 14,
A first conveyor arranged to face a first surface which is a metal layer of the sealing film;
A second conveyor disposed on the first conveyor so as to face a second surface opposite to the first surface;
A driving unit for driving at least one of the first and second conveyors to transport the sealing film; And
And a rotating portion for rotating the first and second conveyors together in a predetermined direction so as to reverse the first and second surfaces of the sealing film.

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