KR101865686B1 - Method and manufacturing apparatus for film touch sensor - Google Patents

Abstract

The present invention relates to a method and an apparatus for manufacturing a film touch sensor, and more particularly, to a method and apparatus for manufacturing a film touch sensor in which a pressure is applied to a laminate formed on a substrate to be transferred, Maintaining a constant bearing capacity; And applying a force to an end portion of the laminate in a state where the stomatometric holding force is maintained to peel off the laminate from the substrate, thereby making it possible to significantly reduce occurrence of cracks in the manufacture of the thin film touch sensor and to improve durability. And a film touch sensor manufacturing apparatus in which the method is implemented.

Description

TECHNICAL FIELD [0001] The present invention relates to a film touch sensor manufacturing method,

The present invention relates to a method and an apparatus for manufacturing a film touch sensor capable of suppressing the occurrence of cracks.

The touch screen panel is an input device that allows a user to input a command by selecting an instruction displayed on a screen of a video display device or the like as a human hand or an object.

To this end, the touch screen panel is provided on the front face of the image display device and converts the contact position, which is in direct contact with a human hand or an object, into an electrical signal. Thus, the instruction content selected at the contact position is accepted as the input signal.

Such a touch screen panel can be replaced with a separate input device connected to the image display device such as a keyboard and a mouse, and thus the use range thereof is gradually expanding.

The touch screen panel is known as a resistive film type, a light sensing type, and a capacitive type. Among the capacitive touch screen panels, a conductive sensing pattern is formed when a human hand or an object is contacted, The contact position is converted into an electrical signal by detecting a change in capacitance formed with another sensing pattern or a ground electrode or the like.

Such a touch screen panel is generally attached to the outer surface of a flat panel display device such as a liquid crystal display device or an organic light emitting display device and is often commercialized. Therefore, the touch screen panel requires high transparency and thin thickness characteristics.

In recent years, flexible flat panel display devices have been developed, and in this case, the touch screen panel attached to the flexible flat panel display device is also required to have a flexible characteristic.

On the other hand, the capacitive touch screen panel requires a thin film formation process, a pattern formation process, and the like in order to form a sensing pattern for realizing a touch sensor. Therefore, the touch screen panel requires high heat resistance and chemical resistance. Thus, a transparent electrode is formed on a substrate formed by curing a resin such as polyimide excellent in heat resistance.

On the other hand, the flexible touch screen panel is required to use a thin and flexible substrate, and it is difficult to form a transparent electrode on such a flexible substrate. As an alternative thereto, there has been proposed a method of coating a resin on a support to form a transparent electrode on the resin coating layer, and peeling the resin coating layer from the support. However, there is a problem that peeling of the cured resin is not easy.

Korean Patent Laid-Open Publication No. 2012-133848 discloses a flexible touch screen panel, but fails to provide an alternative to the above problem.

Korea Patent Publication No. 2012-133848

An object of the present invention is to provide a method and an apparatus for manufacturing a film touch sensor capable of suppressing the occurrence of cracks.

It is another object of the present invention to provide a method and an apparatus for manufacturing a film touch sensor capable of manufacturing continuous film touch sensors and improving process efficiency.

1. applying pressure to a laminate formed on a substrate to be conveyed to maintain a constant supporting force in a direction perpendicular to the conveying direction at a portion spaced apart from the end of the laminate by a predetermined distance; And

And applying a force to an end portion of the laminate in a state where the supporting force is maintained, thereby peeling the laminate from the substrate.

2. The method of claim 1, wherein the bearing force is generated by contacting a cylindrical roll having a predetermined radius of curvature with the laminate.

3. The method for manufacturing a film touch sensor according to 1 above, wherein the holding force held in the laminate is 0.1 to 100 N / 25 mm.

4. The method for manufacturing a film touch sensor according to claim 1, wherein the force applied to the end of the laminate is applied to the laminate so as to form a predetermined angle with respect to the conveying direction.

5. The method of manufacturing a film touch sensor according to claim 1, wherein a force applied to the end portion is 0.1 to 50 N / 25 mm.

6. The method of manufacturing a film touch sensor according to claim 1, wherein a force applied to the end portion is greater than an adhesion force between the substrate and the laminate.

7. The method of claim 1, further comprising bonding the optical film onto the laminate prior to applying the pressure.

8. The method of manufacturing a film touch sensor according to Claim 1, further comprising the step of supporting the laminate with the supporting force and bonding the introduced optical film onto the laminate.

9. The method of manufacturing a film touch sensor according to 7 or 8 above, wherein the optical film is a protective film coated with an adhesive layer.

10. The method of manufacturing a film touch sensor according to claim 1, further comprising winding the laminated body in a roll form.

11. The laminate according to 1 above, wherein said laminate comprises a separating layer; A first protective layer located on the isolation layer; And an electrode pattern layer disposed on the first passivation layer.

12. The method of claim 11, wherein the laminate further comprises a second protective layer located on the electrode pattern layer.

13. The method of claim 11 or 12, wherein the electrode pattern layer comprises at least one of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc tin oxide (IZTO), cadmium tin oxide (3,4-ethylenedioxythiophene) (PEDOT), carbon nanotubes (CNT), metal wires, and metal meshes.

14. A transfer unit for transferring a laminate formed on a substrate;

A cylindrical roll portion which applies a pressure to the laminate to form a constant supporting force in a direction perpendicular to the conveying direction at a portion spaced apart from the end of the laminate by a predetermined distance; And

And a peeling unit for applying a force to an end of the laminate while the supporting force is maintained to separate the laminate from the substrate.

15. The apparatus for manufacturing a film touch sensor according to 14 above, wherein the radius of curvature of the cylindrical roll portion is 5 to 200 mm.

16. The apparatus for manufacturing a film touch sensor according to 14 above, wherein the force applied to the end portion of the laminate is applied to the laminate so as to form a predetermined angle with respect to the conveying direction.

17. The apparatus for manufacturing a film touch sensor according to 14 above, wherein the laminated body peeled off from the substrate is transported along the outer circumferential surface of the cylindrical roll from a point where it is peeled to a point reaching a predetermined angle.

18. The apparatus of claim 14, further comprising a laminating roll portion located in front of the cylindrical roll portion and for laminating an optical film on the laminate.

19. The apparatus for manufacturing a film touch sensor according to claim 14, wherein the cylindrical roll portion supports the laminate body by the supporting force and joins the introduced optical film onto the laminate body.

20. The film touch sensor manufacturing apparatus as set forth in 14 above, wherein the peeling section includes a winding roll section for applying a predetermined tension to the laminate to peel and wind the laminate from the substrate.

21. The laminate according to claim 14, wherein the laminate comprises a separating layer; A first protective layer located on the isolation layer; And an electrode pattern layer disposed on the first passivation layer.

22. The apparatus of claim 21, wherein the laminate further comprises a second protective layer disposed on the electrode pattern layer.

The method of manufacturing a film touch sensor of the present invention prevents the occurrence of a film touch sensor crack and improves the process efficiency by making it possible to manufacture a continuous film touch sensor.

The apparatus for manufacturing a film touch sensor of the present invention includes a cylindrical roll portion that forms a constant supporting force, thereby reducing the occurrence of cracks when the film touch sensor is peeled off from the carrier substrate to produce a film touch sensor having excellent durability.

Further, the apparatus for manufacturing a film touch sensor of the present invention can perform a continuous process including a roll-to-roll process, thereby improving productivity.

FIG. 1 is a schematic cross-sectional view of an apparatus for manufacturing a film touch sensor according to an embodiment of the present invention.
2 is a schematic cross-sectional view of an apparatus for manufacturing a film touch sensor according to another embodiment of the present invention.
3 schematically shows a cross section of a laminate according to an embodiment of the present invention.
4 schematically shows a cross section of a laminate according to another embodiment of the present invention.

The present invention relates to a method and an apparatus for manufacturing a film touch sensor, and more particularly, to a method and apparatus for manufacturing a film touch sensor, in which a pressure is applied to a laminate formed on a substrate to be transferred, Maintaining a constant bearing force in the direction of the arrow; And applying a force to an end portion of the laminate in a state where the stomatometric holding force is maintained to peel off the laminate from the substrate, thereby making it possible to significantly reduce occurrence of cracks in the manufacture of the thin film touch sensor and to improve durability. And a film touch sensor manufacturing apparatus in which the method is implemented.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the drawings. It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And shall not be construed as limited to such matters.

Flexible displays are used as folded, curved or rolled, so they are lightweight, thin, resistant to impact, and free from bending. However, when the flexible substrate used in the flexible display is subjected to an excessive external bending stress, there is a problem that a crack occurs in the bent portion.

Particularly, in the case of the film touch sensor having the laminated structure according to the present invention, it is difficult to maintain and transmit a certain peeling force when the film touch sensor is manufactured by peeling from the substrate, and cracks are generated in the film touch sensor.

Accordingly, in the method of manufacturing a film touch sensor of the present invention, when a film touch sensor is manufactured by peeling off a substrate by maintaining a predetermined holding force on a laminate by applying pressure to the laminate formed on the substrate to be transferred, And the peeling force is uniformly transmitted to the reverse side to prevent the occurrence of cracks.

<Manufacturing Method of Film Touch Sensor>

Hereinafter, a method of manufacturing the film touch sensor of the present invention will be described, but the present invention is not limited thereto.

The method of manufacturing a film touch sensor according to the present invention includes the steps of applying pressure to a laminate formed on a substrate to be conveyed to maintain a constant supporting force in a direction perpendicular to the conveying direction at a portion spaced apart from the end of the laminate by a predetermined distance ; And separating the laminate from the substrate by applying a force to the end of the laminate in a state where the supporting force is maintained.

First, in the method of manufacturing a film touch sensor of the present invention, pressure is applied to a laminate formed on a substrate to be conveyed, so that a constant supporting force is maintained in a direction perpendicular to the conveying direction at a portion spaced apart from the end of the laminate by a predetermined distance .

In the present invention, the direction perpendicular to the conveying direction is not limited to a mathematically supporting force of 90 degrees with respect to the conveying direction of the stack, but also includes an angular range seen from a process error, It is a concept that includes angle.

In this step, when a film touch sensor is manufactured by applying pressure to a laminate formed on a substrate and maintaining a predetermined holding force on the laminate formed on the substrate, the laminate is peeled off from the substrate to maintain and transmit a constant peeling force have. Thereby preventing cracks in the manufactured film touch sensor.

A member capable of applying a constant force to the laminate can be used to generate a supporting force without particular limitation. Specifically, for example, a cylindrical roll having a predetermined radius of curvature, which can generate a constant force, It is possible to generate a supporting force.

The radius of curvature of the cylindrical roll can be adjusted according to the thickness of the laminate.

The holding force held in the laminate may be 0.1 to 100 N / 25 mm, and preferably 0.5 to 50 N / 25 mm. If the supporting force held in the laminate is less than 0.1 N / 25 mm, there may be a problem that the cylindrical roll may be lifted by the force applied to the end of the laminate, and in the case of more than 100 N / 25 mm, The electrode pattern layer may be damaged.

Next, a method of manufacturing a film touch sensor of the present invention includes a step of peeling the laminate from the substrate by applying a force to an end of the laminate while maintaining a constant holding force.

In this step, the laminate is peeled in a state in which the constant supporting force is maintained, so that the peeling force is evenly distributed to the peeling surface of the substrate and the laminate, and cracking is suppressed at the time of peeling.

For example, in the case of using a cylindrical roll as described above, peeling occurs at a point where the supporting force (pressure) by the cylindrical roll is released, and the laminate peeled in the direction in which the peeling force is applied, So that the peeling force can be evenly transmitted since the point of peeling and the trajectory after peeling are the same.

The force applied to the end portion of the laminate may be applied to the laminate so as to form a predetermined angle with respect to the conveying direction. The predetermined angle may be, for example, 1 to 180 °, and preferably 5 to 90 °. When the angle is less than 1 DEG, the force applied to the optical film to maintain the force applied to the end portion of the laminate becomes excessively large, so that the optical film may be stretched or damaged. There is a problem in that the configuration of the apparatus is complicated and the economical efficiency is deteriorated.

The force applied to the end portion of the laminate may vary depending on the adhesive force between the substrate and the laminate and the strength of the optical film, and may be, for example, 0.1 to 50 N / 25 mm, preferably 0.2 to 30 N / 25 mm . If the force applied to the end portion is less than 0.1 N / 25 mm, the laminate may not be smoothly peeled off from the substrate. If the force exceeds 50 N / 25 mm, the optical film may be stretched or damaged.

The force applied to the end of the laminate for peeling the laminate from the substrate may be greater than the adhesion force between the substrate and the laminate.

The method of manufacturing a film touch sensor of the present invention may further include winding the peeled laminate into a roll form. As a method for winding the peeled laminate into a roll form, a known method in the art can be used without limitation. For example, the laminated laminate which has been peeled off can be wound by a winding roll. By winding the peeled laminate, which is the final product, in roll form, it is possible to manufacture a continuous film touch sensor, thereby improving the process efficiency.

Further, as another embodiment of the present invention, the method of manufacturing a film touch sensor of the present invention may further include the step of bonding an additional optical film on the laminate before applying a supporting force (pressure) for peeling. By bonding the optical film on the laminate, the surface of the film touch sensor can be protected, and optical characteristics and processability can be improved. The bonding of the optical film can be performed, for example, by further including a laminating roll.

As a further embodiment of the present invention, in the method for manufacturing a film touch sensor of the present invention, in the step of maintaining a constant supporting force according to the present invention, the laminated body is supported by the supporting force, To the substrate.

As the optical film, a transparent film made of materials widely used in the art can be used without limitation, and examples thereof include cellulose esters (e.g., cellulose triacetate, cellulose propionate, cellulose butyrate, cellulose acetate propionate , And nitrocellulose), polyimides, polycarbonates, polyesters (e.g., polyethylene terephthalate, polyethylene naphthalate, poly-1,4-cyclohexanedimethylene terephthalate, polyethylene 1,2- 4'-dicarboxylate and polybutylene terephthalate, polystyrenes such as syndiotactic polystyrenes, polyolefins such as polypropylene, polyethylene and polymethylpentene, polysulfone, polyethersulfone, polyarylene Polyether-imide, polymethylmethacrylate, polyetherketone, poly It may be a polyvinyl alcohol and polyvinyl film made of a single or a mixture selected from the group consisting of chloride.

Further, the optical film may be an isotropic film or a retardation film.

Nx and ny are the main indices of refraction in the film plane, nz is the refractive index in the film thickness direction, d is the film thickness) is 40 nm or less, and 15 nm And the retardation in the thickness direction (Rth, Rth = [(nx + ny) / 2-nz] xd) is from -90 nm to +75 nm, preferably -80 nm to +60 nm, desirable.

The retardation film is a film produced by the uniaxial stretching, biaxial stretching, polymer coating and liquid crystal coating method of a polymer film, and is generally used for improving the viewing angle of the display, improving the color feeling, improving the light leakage, do.

In addition, a polarizing plate may be used as the optical film.

The polarizing plate may be one having a polarizer protective film attached on one side or both sides of a polyvinyl alcohol polarizer.

Further, a protective film may be used as the optical film.

The protective film may be a protective film coated with an adhesive layer on at least one side of a film made of a polymer resin, or a self-adhesive film such as polypropylene, and may be used for protecting the surface of the touch sensor and improving the process precision.

The light transmittance of the optical film is preferably 85% or more, and more preferably 90% or more. Further, the total haze value of the optical film measured according to JIS K7136 is preferably 10% or less, more preferably 7% or less.

The thickness of the optical film is not limited, but is preferably 10 to 200 占 퐉, and more preferably 20 to 150 占 퐉.

In the film touch sensor manufacturing method of the present invention, as shown in FIG. 3, the laminate 300 includes a separation layer 310; A first passivation layer 320 disposed on the isolation layer; And an electrode pattern layer 330 located on the first passivation layer 320. [

The separation layer 310 according to the present invention is a layer formed for separation from a substrate.

The separation layer 310 may be a polymer organic film, and may include, for example, a polyimide-based polymer, a poly vinyl alcohol-based polymer, a polyamic acid-based polymer, a polyamide- , A polymer based on polyethylene, a polymer based on polystyrene, a polymer based on polynorbornene, a polymer based on phenylmaleimide copolymer, a polymer based on polyazobenzene, a polymer based on polyphenylene phthalamide based polymer, a polyphenylenephthalamide-based polymer, a polyester-based polymer, a polymethyl methacrylate-based polymer, a polyarylate-based polymer, a cinnamate-based polymer, a coumarin- A phthalimidine-based polymer, a chalcone-based polymer, and an aromatic acetylene-based polymer may be used. However, One that does not. These may be used alone or in combination of two or more.

The thickness of the separation layer 310 is preferably 0.05 to 1 占 퐉, but is not limited thereto.

The separating layer 310 is easily peeled off from the substrate, and a material having a peeling force with respect to the substrate of 1 N / 25 mm or less is preferably formed on the substrate so as not to be separated from the first protective layer, It is preferable that it is made of a material having a peeling force of 0.1 N / 25 mm or less.

The substrate 600 may be used without any particular limitation if it is a material that provides adequate strength to be fixed without being bent or twisted during the process, and which has little effect on heat or chemical treatment. For example, glass, quartz, silicon wafer, cloth or the like can be used, and preferably, glass can be used.

The first passivation layer 320 according to the present invention serves as a base on which the electrode pattern layer is formed and is disposed on the separation layer to serve as a passivation layer for the electrode pattern layer and to prevent contamination of the electrode pattern layer In addition, it serves to insulate the conductive patterns.

The thickness of the first protective layer 320 is not particularly limited, and may be, for example, 0.1 to 10 占 퐉, and preferably 0.5 to 5 占 퐉.

As the first protective layer 320, a polymer known in the art may be used without limitation, and may be made of, for example, an organic insulating film.

The electrode pattern layer 330 according to the present invention is formed on the first passivation layer 320.

The electrode pattern layer 330 may include a conductive pattern to serve as an electrode when applied to an electronic device, and the conductive pattern may be formed in an appropriate shape according to requirements of an applied electronic device. For example, when applied to a touch screen panel, the electrode pattern may be formed of two kinds of electrode patterns, that is, an electrode pattern for sensing the x coordinate and an electrode pattern for sensing the y coordinate. However, the present invention is not limited thereto.

As the electrode pattern layer 330, any conductive material may be used without limitation, and examples thereof include indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide (IZTO), aluminum zinc oxide (AZO) Indium zinc oxide (IZO-Ag-IZO), indium zinc oxide (ITO-Ag-ITO), gallium zinc oxide (GZO), florine tin oxide (FTO), indium tin oxide- Metal oxide materials selected from the group consisting of tin oxide-silver-indium zinc tin oxide (IZTO-Ag-IZTO) and aluminum zinc oxide-silver-aluminum zinc oxide (AZO-Ag-AZO); Metals selected from the group consisting of gold (Au), silver (Ag), copper (Cu), molybdenum (Mo) and APC; Nanowires of metals selected from the group consisting of gold, silver, copper and lead; Carbon-based materials selected from the group consisting of carbon nanotubes (CNT) and graphene; And a conductive polymer material selected from the group consisting of poly (3,4-ethylenedioxythiophene) (PEDOT) and polyaniline (PANI). These may be used alone or in combination of two or more.

The unit patterns of the electrode pattern layer 330 may be, for example, a polygonal pattern of triangular, tetragonal, pentagonal, hexagonal, or hexagonal or more.

In addition, the electrode pattern layer 330 may include a regular pattern. A rule pattern means that the pattern form has regularity. For example, the unit patterns may include, independently of each other, a mesh shape such as a rectangle or a square, or a pattern such as a hexagon.

In addition, the electrode pattern layer 330 may include an irregular pattern. The irregular pattern means that the shape of the pattern does not have regularity.

When the electrode pattern layer 330 is formed of a material such as a metal nanowire, a carbon-based material, or a polymer material, the electrode pattern layer may have a network structure.

In the case of having a network structure, since signals are sequentially transmitted to adjacent patterns in contact with each other, a pattern having high sensitivity can be realized.

The electrode pattern layer 330 may be formed by a method commonly used in the art. For example, the electrode pattern layer 330 may be formed by coating a conductive compound on the first protective layer. The film formation step may be formed by various thin film deposition techniques such as physical vapor deposition (PVD) and chemical vapor deposition (CVD). For example, it may be formed by reactive sputtering, which is an example of physical vapor deposition, but is not limited thereto.

Thereafter, a step of forming a photoresist layer on the upper surface of the conductive compound film may be performed to form a desired pattern.

The photosensitive resin composition for forming the photoresist layer is not particularly limited, and a photosensitive resin composition commonly used in the art can be used.

The photosensitive resin composition is coated on a film made of the conductive compound and then heated and dried to remove a volatile component such as a solvent to obtain a smooth photoresist layer.

The photoresist layer thus obtained is irradiated with ultraviolet rays through a mask for forming a desired pattern (exposure). At this time, it is preferable to use an apparatus such as a mask aligner or a stepper so as to uniformly irradiate a parallel light beam onto the entire exposed portion and accurately align the mask and the substrate. When ultraviolet light is irradiated, the site irradiated with ultraviolet light is cured.

The ultraviolet rays may be g-line (wavelength: 436 nm), h-line, i-line (wavelength: 365 nm), or the like. The dose of ultraviolet rays can be appropriately selected according to need, and the present invention is not limited thereto.

When the photoresist layer which has been cured is brought into contact with a developing solution to dissolve and develop the non-visible portion, a desired pattern can be obtained.

The developing method may be any of a liquid addition method, a dipping method, and a spraying method. Further, the substrate may be inclined at an arbitrary angle during development.

The developer is usually an aqueous solution containing an alkaline compound and a surfactant, and can be used without any particular limitation as long as it is commonly used in the art.

Thereafter, an etching process may be performed to form a conductive pattern according to the photoresist pattern.

The etchant composition used in the etching process is not particularly limited, and an etchant composition commonly used in the art may be used, and a hydrogen peroxide etchant composition may be preferably used.

Through the etching process, an electrode pattern layer including a conductive pattern of a desired pattern can be formed.

The thickness of the electrode pattern layer 330 according to the present invention is not particularly limited, but is preferably 0.01 to 5 占 퐉, and more preferably 0.05 to 0.5 占 퐉.

If necessary, the laminate 400 according to the present invention may further include a second protective layer 340 disposed on the electrode pattern layer. Fig. 4 schematically shows a cross section of such a case.

The second passivation layer 340 according to the present invention may serve as a substrate itself and as a passivation layer. In addition, corrosion of the electrode pattern layer can be prevented, and the surface can be planarized to suppress generation of minute bubbles when adhered to the base film. It can also serve as an adhesive layer.

When the second protective layer 340 is further included, the base film can be simultaneously protected at the top and bottom to further improve the crack suppressing effect.

When the second protective layer 340 serves as a substrate or a passivation layer, a silicone-based polymer such as polydimethylsiloxane (PDMS) or polyorganosiloxane (POS); Polyimide-based polymers; Polyurethane-based polymers, and the like, but the present invention is not limited thereto. These may be used alone or in combination of two or more.

When the second protective layer 340 serves as an adhesive layer, a thermosetting or photocurable adhesive or adhesive known in the art can be used without limitation. For example, thermosetting or photo-curable pressure-sensitive adhesives or adhesives such as polyester-based, polyether-based, urethane-based, epoxy-based, silicone-based or acrylic-

The second protective layer 340 may be made of the same material as the first protective layer.

The thickness of the second protective layer 340 may be equal to the thickness of the first protective layer.

<Film touch sensor manufacturing device>

In addition, the present invention provides an apparatus for manufacturing a film touch sensor, wherein FIGS. 1 to 3 schematically show cross-sectional views of an apparatus for manufacturing a film touch sensor 100, 200 according to an embodiment of the present invention.

The apparatus for manufacturing a film touch sensor of the present invention comprises a transfer unit 110; A cylindrical roll portion 120; And a peeling unit 140. By applying pressure to the stacked body formed on the substrate to be conveyed to maintain a constant holding force on the stacked body, when the filmed touch sensor is manufactured by separating the stacked body from the substrate, The peeling force is uniformly transmitted to the peeling surface of the sieve to prevent the occurrence of cracks.

Transfer portion (110)

The transfer unit 110 according to the present invention is a member that serves to transfer the stacked body 400 formed on the substrate 600 in a predetermined direction, as shown in FIG.

The conveyance unit 110 according to the present invention may include a conveyance roll 110a and a conveyor belt 110b and a plurality of conveyance rolls 110a may be provided below the conveyor belt 110b.

The stacked body 400 may include the structure described above and the transferring unit 110 may transfer the stacked body 400 formed on the substrate 600 at a constant speed, for example, at a speed of 0.1 to 50 m / min .

Cylindrical Roll portion (120)

1, a cylindrical roll 120 according to the present invention is formed by applying pressure to a laminated body 400 transferred from a transferring unit 110 and separating a portion spaced apart from the end of the laminated body 400 by a predetermined distance In a direction perpendicular to the transport direction.

Since the cylindrical roll 120 has a constant radius of curvature, when the laminate passing through the rolls is peeled off along the outer circumferential surface of the roll, the peeled position becomes the same, thereby preventing cracks in manufacturing the film touch sensor.

The radius of curvature of the cylindrical roll 120 may be between 5 and 200 mm, preferably between 10 and 150 mm. When the radius of curvature is less than 5 mm, the stress received by the laminate increases as the radius of curvature increases or the shaft of the cylindrical roll part is deformed due to the supporting force, so that the supporting force is not uniformly transmitted, If the radius of curvature is more than 200 mm, there is a problem that the manufacturing cost of the cylindrical roll part increases and the economical efficiency is lowered.

If necessary, the apparatus for manufacturing a film touch sensor of the present invention may further include a supporting roll 130 on the opposite side of the cylindrical roll 120 to maintain a constant supporting force.

If necessary, the apparatus for manufacturing a film touch sensor of the present invention may further include a lancing roll 150 in front of the cylindrical roll 120, as shown in FIG. The desired additional optical film 700 can be bonded onto the laminate 400 being transported by the laminating roll section 150.

2, the optical film 700 may be a protective film coated with the adhesive layer 800 as described above. In this case, the optical film 700 may be provided with a pressure-sensitive adhesive on the laminate 400 Can be mediated.

By bonding the optical film 700 to the upper surface of the laminate 400, the surface of the film touch sensor can be protected, and the processability can be improved. The same optical film as described above can be used.

In another embodiment of the present invention, as shown in FIG. 1, the apparatus for manufacturing a film touch sensor of the present invention does not have a separate laminating roll part, but the cylindrical roll part 120 supports the laminated body 400 with a supporting force The optical film 700 can be bonded onto the laminate 400 at the same time.

Peeling portion (140)

1, the peeling unit 140 according to the present invention separates the laminated body 400 from the substrate 600 by applying a force to an end of the laminated body 400 to finally produce a film touch sensor do.

 The peeling unit 140 peels off the laminate from the substrate by applying a force larger than the adhesive strength between the substrate and the laminate to the end of the laminate. At this time, a state in which the constant holding force is maintained at a portion spaced apart from the end of the laminate by a predetermined distance The peeling force is uniformly transmitted to and held on the peeling surface of the substrate and the laminate, and cracking is suppressed during peeling.

The force applied to the end portion of the laminate at the peeling portion may be a tension, and the size may be equal to the magnitude of the above-mentioned force.

The force applied to the end portion of the laminate at the peeling portion may be applied to the laminate so as to form a predetermined angle with respect to the transporting direction, and the predetermined angle may be the same as the above-mentioned angle.

Further, the laminated body 400 peeled off from the substrate 600 can be transported along the outer circumferential surface of the cylindrical roll from the point where it is peeled to the point reaching the angle.

The peeling section 140 according to the present invention may include a winding roll section for applying a predetermined tension to the laminate and peeling and winding the laminate from the substrate. By including the winding roll, the manufacturing process can be continuously performed, and productivity can be improved.

If necessary, the laminate formed on the substrate in the apparatus for manufacturing a film touch sensor of the present invention may be transported in a film state, and the apparatus may further include means for cutting the film touch sensor manufactured in front of or behind the cylindrical roll 120 .

100, 200: Film touch sensor manufacturing equipment
110:
110a: Feed roll
110b: Conveyor belt
120: Cylindrical roll part
130:
140:
150: laminating roll part
300, 400: laminate
310: separation layer
320: first protective layer
330: electrode pattern layer
340: second protective layer
600: substrate
700: Optical film
800: Adhesive layer

Claims (22)

Forming a laminate including an electrode pattern layer on a substrate;
Applying pressure to the laminate formed on the substrate to be conveyed to maintain a constant supporting force in a direction perpendicular to the conveying direction at a portion spaced apart from the end of the laminate by a predetermined distance; And
And applying a force to an end portion of the laminate in a state where the supporting force is maintained, thereby peeling the laminate from the substrate.
The method according to claim 1, wherein the bearing force is generated by bringing a cylindrical roll having a predetermined radius of curvature into contact with the laminate.
The film touch sensor manufacturing method according to claim 1, wherein the holding force held in the laminate is 0.1 to 100 N / 25 mm.
The method of manufacturing a film touch sensor according to claim 1, wherein the force applied to the end of the laminate is applied to the laminate so as to form a predetermined angle with respect to the conveying direction.
The method of claim 1, wherein the force applied to the end is 0.1 to 50 N / 25 mm.
The method according to claim 1, wherein a force applied to the end portion is greater than an adhesion force between the substrate and the laminate.
The method of claim 1, further comprising bonding the optical film onto the laminate before applying the pressure.
The method of manufacturing a film touch sensor according to claim 1, further comprising the step of supporting the laminate by the supporting force and bonding the introduced optical film onto the laminate.
The method of manufacturing a film touch sensor according to claim 7 or 8, wherein the optical film is a protective film coated with an adhesive layer.
The method of manufacturing a film touch sensor according to claim 1, further comprising winding the peeled laminate in a roll form.
The method according to claim 1, wherein forming the laminate comprises:
Forming a separation layer on the substrate;
Forming a first passivation layer on the isolation layer; And
And forming the electrode pattern layer on the first passivation layer.
12. The method of claim 11, wherein the laminate further comprises a second protective layer located on the electrode pattern layer.
The electrode pattern layer according to claim 11 or 12, wherein the electrode pattern layer is formed of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc tin oxide (IZTO), cadmium tin oxide (CTO) (PEDOT), carbon nanotubes (CNT), metal wires, and metal meshes. The method of manufacturing a film touch sensor according to claim 1,
A transferring unit for transferring a laminate including an electrode pattern layer formed on a substrate;
A cylindrical roll portion which applies a pressure to the laminate to form a constant supporting force in a direction perpendicular to the conveying direction at a portion spaced apart from the end of the laminate by a predetermined distance; And
And a peeling unit for applying a force to an end of the laminate while the supporting force is maintained to separate the laminate from the substrate.
15. The apparatus of claim 14, wherein the radius of curvature of the cylindrical roll is 5 to 200 mm.
15. The film touch sensor manufacturing apparatus according to claim 14, wherein the force applied to the end portion of the laminate is applied to the laminate so as to form a predetermined angle with respect to the conveying direction.
15. The apparatus for manufacturing a film touch sensor according to claim 14, wherein the laminated body peeled off from the substrate is transported along the outer circumferential surface of the cylindrical roll from a point where it is peeled to a point reaching a predetermined angle.
15. The apparatus of claim 14, further comprising a laminating roll portion positioned in front of the cylindrical roll portion and for laminating an optical film on the laminate.
15. The apparatus for manufacturing a film touch sensor according to claim 14, wherein the cylindrical roll portion supports the laminate by the supporting force and joins the introduced optical film onto the laminate.
15. The film touch sensor manufacturing apparatus according to claim 14, wherein the peeling section includes a winding roll section for applying a predetermined tension to the laminate to peel and wind the laminate from the substrate.
15. The apparatus of claim 14, wherein the laminate further comprises a separation layer and a first passivation layer disposed on the separation layer, wherein the electrode pattern layer is located on the first passivation layer.
23. The apparatus of claim 21, wherein the laminate further comprises a second protective layer disposed on the electrode pattern layer.

Images