KR101562960B1 - Method of touch panel sensor and the touch panel sensor - Google Patents

Abstract

A method of fabricating a touch panel sensor disposed on an upper surface of a display to sense a contact position of a target object includes printing an electrode pattern on an insulating film using a metal fiber solution, Forming a protective coating pattern that partially covers the film.

Description

TECHNICAL FIELD [0001] The present invention relates to a touch panel sensor,

The present invention relates to a method of manufacturing a touch panel sensor and a touch panel sensor, and more particularly, to a touch panel sensor capable of sensing a contact position of an object approaching a display.

1 is a perspective view illustrating a conventional capacitive touch panel sensor.

1, in a conventional touch panel sensor, a lower insulating sheet 10 and an upper insulating sheet 20 are bonded at a predetermined interval. The lower ITO electrode 30 and the upper ITO electrode 40 are vertically arranged on the opposing surfaces of the lower insulating sheet 10 and the upper insulating sheet 20. Specifically, The upper ITO electrode 40 is oriented from the upper side to the lower side on the bottom surface of the upper insulating sheet 20.

In the above-described touch panel sensor, there is a predetermined capacitance, that is, a capacitance value corresponding to the area of each intersection point at each intersection of the lower ITO electrode 10 and the upper ITO electrode 20 disposed so as to cross each other. The area of the upper ITO electrode 20 disposed on the upper part is added to the area of the body part, and the capacitance value can be changed.

A connection line 48 made of a metal is connected from the end of the upper ITO electrode 40 to the upper insulating sheet 20 to electrically connect the upper ITO electrode 40 and the electrode 52 of the external circuit board 50 And the lower ITO electrode 20 is connected to the circuit board 50 by a separate connection line.

At this time, the connecting line 48, which is generally made of metal, is shiny with metallic luster and can not be seen through the transparent upper insulating sheet 20 because the light does not pass through. Conventionally, a separate non-transmissive film for the window decoration 65 is formed on the bottom surface of the reinforced substrate 60 such as a separate glass or translucent reinforced plastic so that the connecting line 48 and the circuit board 50 can not be visually recognized , And the reinforcing substrate (60) is disposed on the upper insulating sheet (20).

However, provision of a separate reinforcing substrate 60 on the upper insulating sheet 20 leads to an increase in thickness of the touch panel sensor. In recent years, the touch panel sensor disclosed in Publication No. 10-2011-0137231 5, a window decoration 45 may be directly formed on the bottom surface of the upper insulating sheet 20, and the upper ITO electrode 40 may be formed.

However, when the upper insulating sheet 20 is bent and deformed slightly upward and downward when the upper ITO electrode 40 is bent at the boundary line A and a part of the body of the touch panel sensor is in contact with the touch panel sensor, The upper ITO electrode 40 can be damaged easily. Thus, the process of such a touch panel sensor is in fact not suitable for making a product.

The present invention provides a method of manufacturing a touch panel sensor and a touch panel sensor capable of minimizing the possibility of breakage of the electrode provided on the bottom surface of the upper insulating sheet due to refraction or external impact of the upper insulating sheet caused by the touch of a user .

The present invention provides a method of manufacturing a touch panel sensor and a touch panel sensor capable of shortening a process time for manufacturing a touch panel sensor.

When a metal nanofiber is used as an electrode pattern that can be applied to a touch panel sensor, it must be provided very thinly to have transparency. The present invention provides a method of manufacturing a touch panel sensor and a touch panel sensor capable of preventing such a thin electrode pattern from being easily damaged from external physical / chemical influences.

In addition, it is possible to reduce the defective rate due to the position error occurring when the components of the touch panel sensor are bonded, and to minimize the defective rate of the touch panel sensor due to the bubbles generated by using the adhesive layer when bonding the components of the touch panel sensor A method of manufacturing a touch panel sensor and a touch panel sensor are provided.

According to an exemplary embodiment of the present invention, a method of manufacturing a touch panel sensor disposed on an upper surface of a display to sense a contact position of a target object includes printing an electrode pattern on an insulating film using a metal fiber solution, And forming a protective coating pattern that partially covers the electrode pattern and the insulating film to expose a portion of the end of the pattern.

First, the electrode pattern of the present invention is formed directly on a flat insulating film without bending, and is hardly damaged during use.

Further, since the electrode pattern is not exposed to the outside by the transparent protective coating pattern, oxidation is prevented. Particularly, the protective coating pattern can be formed to have a thickness of about 0.5 탆 or more larger than the thickness of the electrode pattern so that the electrode pattern of about 0.1 to 0.2 탆 is not exposed to the surface of the protective coating pattern. Lt; / RTI >

Furthermore, since the electrode pattern is protected by the protective coating pattern in the present invention, it can be formed in a very thin thickness. Therefore, it is possible to provide an electrode pattern having a light-transmitting property even by using a metal.

For example, a metal fiber solution containing a metal nano fiber, a synthetic resin, and a volatile solvent is printed on an insulating film by gravure, reverse gravure, offset, silkscreen, or a method using hydrophilic / hydrophobic printing And then the volatile solvent is removed by a curing process to form an electrode pattern. When the volatile solvent is removed, only the resin and the metal nanofibers on the fiber form to form the electrode pattern, and the metal nanofibers contained in the electrode pattern can be kept on the insulating substrate by the resin.

However, if the amount of resin (synthetic resin) is increased, the seating state of the metal nanofibers may be stable, but the conductivity of the electrode pattern may be lowered. Therefore, it is desirable to provide a minimal amount of resin, but this too can not be minimized in order to maintain a stable seating state of the metal nanofibers.

Accordingly, in the present invention, the amount of the resin is minimized, but the metal nanofibers unstably seated on the insulating film are pressed using a protective coating pattern. The electrode pattern that is stably pressed onto the insulating film by the protective coating pattern can minimize the electrical short circuit due to the external physical impact during use of the touch panel sensor in the future, .

In addition, the end portion of the electrode pattern exposed to the outside of the protective coating pattern can be covered and protected with a conductive electrode coating pattern. The electrode coating pattern can be formed by pressing the end portion of the electrode pattern exposed to the outside of the protective coating pattern to stabilize the seating state on the insulating film, to prevent oxidation, and to prevent scratches or damage during the process.

The electrode coating pattern may be formed so as to cover only the portion exposed to the outside of the protective coating pattern, but in some cases, the electrode coating pattern may include an end portion of the electrode pattern exposed outside the protective coating pattern, So as to further cover a part of the electrode pattern of the electrode pattern.

When the electrode coating pattern covers only the portion of the electrode pattern exposed to the outside of the protective coating pattern, the electrode pattern may be exposed at the boundary between the electrode coating pattern and the protective coating pattern, and cracks or oxidation of the exposed portion may occur The above problem can be solved by forming the electrode coating pattern so as to cover a part of the electrode pattern inside the protective coating pattern adjacent to the end together with the end of the electrode pattern exposed outside the protective coating pattern.

Also, the electrode coating pattern may be a transparent material such as a transparent conductive ceramic or the like, and the electrode coating pattern may be provided as an opaque material as a portion covered by window decoration later.

In addition, a welding process may be added to remove the volatile solvent to form an electrode pattern, followed by pressing the electrode pattern. In some cases, the welding process may be performed after the protective coating pattern and the electrode coating pattern are formed It is possible.

For reference, the formation order of the protective coating pattern and the electrode coating pattern can be freely determined according to the designer's intention. In the case where the protective coating pattern covers the entire electrode pattern on the insulating film and includes a penetration area exposing a part of the end of the electrode pattern, an electrode coating pattern is formed first in correspondence with the end of the electrode pattern, It is desirable to provide a protective coating pattern such that the penetration area is located at the corresponding location.

At this time, the wire member formed on the insulating film to connect the electrode pattern and the external device can electrically connect the electrode pattern and the external device through the electrode coating pattern, and the electrode coating pattern covers only the end portion of the electrode pattern May be provided in a patterned state from the beginning in the same manner as silk screen printing.

The wire member formed on the insulating film to connect the electrode pattern and the external device may be provided by forming a wire coating layer on the insulating film on which the protective coating pattern is formed and patterning the wire coating layer.

However, since the wire coating layer is provided in the form of a layer of opaque metal, it may be difficult to precisely pattern the wire coating layer to be connected to the end portion of the electrode pattern. Therefore, the wire coating layer may be provided with a through hole for position confirmation for confirming the end position of the electrode pattern covered by the wire coating layer.

In addition, the electrode pattern and the protective coating pattern may be individually formed on the insulating film of the size used for the touch panel sensor. However, in the present invention, since the insulating sheet corresponding to at least one sheet of insulating film is wound around the first take-up rollers to provide a plurality of sheets of insulating films collectively, the process time for manufacturing the touch panel sensor can be shortened have.

Specifically, the insulating plate includes an electrode pattern printing portion for printing the metal fiber solution while being drawn out from the first winding roller, a heat treatment portion for heat-treating the metal fiber solution, and a protective coating pattern on the insulating film on which the electrode pattern is formed The protective coating printing portion can be sequentially passed through and then wound again on the second winding roller.

The insulating disk wound around the second winding roller can be cut and used corresponding to the insulating film in use.

Further, the electrode pattern and the protective coating pattern corresponding to the electrode pattern and the protective coating pattern can be further provided on the other surface of the insulating film on which the electrode pattern and the protective coating pattern are already formed through the above- Can be performed through a process of being drawn out from the second winding roller as described above. Of course, it is also possible to form an electrode pattern and a protective coating pattern on the other surface in the process of forming the electrode pattern and the protective coating pattern on one surface.

In addition, by forming electrode patterns on both surfaces of one insulating film without providing the two films with lower and upper ITO electrodes in interaction with each other as in the conventional case, It is possible to minimize defects due to the positional error of the touch panel sensor, and it is possible to prevent defects of the touch panel sensor due to bubbles due to not bonding each film using the adhesive layer.

The manufacturing method of the touch panel sensor and the touch panel sensor of the present invention can directly prevent the electrode pattern from being broken during use, without being refracted on the flat insulation film.

In addition, in the method of manufacturing a touch panel sensor and the touch panel sensor of the present invention, the electrode pattern is prevented from being exposed to the outside due to the transparent protective coating pattern, thereby preventing oxidation.

In addition, since the electrode pattern of the touch panel sensor of the present invention and the touch panel sensor are protected by the protective coating pattern, the electrode pattern can be formed to a very thin thickness. Therefore, it is possible to provide an electrode pattern having a light-transmitting property even by using a metal.

In particular, when an electrode pattern is provided using a metal nanofiber and a resin, if the amount of the resin is increased, the seating state of the metal nanofiber may be stable, but the conductivity of the electrode pattern may be lowered. However, in the present invention, by providing a protective coating pattern on the electrode pattern, it is possible to stably maintain the seating state of the metal nanofibers seated on the insulating film while minimizing the amount of resin, Improvement can be expected. In addition, the electrode pattern in the compressed state can be released from the chemical effect of being exposed to oxygen and being oxidized, as well as minimizing electrical short circuit due to external physical impact during use of the touch panel sensor in the future.

In addition, in the method of manufacturing a touch panel sensor and the touch panel sensor of the present invention, the end portion of the electrode pattern exposed to the outside of the protective coating pattern may also be covered and protected by a conductive electrode coating pattern. The electrode coating pattern can be formed by pressing the end portion of the electrode pattern exposed to the outside of the protective coating pattern to stabilize the seating state on the insulating film, to prevent oxidation, and to prevent scratches or damage during the process.

Further, in the method of manufacturing a touch panel sensor and the touch panel sensor of the present invention, a wire coating layer is formed on an insulating film on which a protective coating pattern is formed, and a wire member is provided by patterning the wire coating layer. can do.

In the method of manufacturing a touch panel sensor and the touch panel sensor of the present invention, a position check hole is formed in the wire coating layer provided in a layered state of an opaque metal material so as to confirm the end position of the electrode pattern covered in the wire coating layer The wire member can be precisely positioned at the end portion of the electrode pattern in the process of patterning the wire coating layer.

In addition, although the electrode pattern and the protective coating pattern may be individually formed on the insulation film of the size used for the touch panel sensor, in the manufacturing method of the touch panel sensor and the touch panel sensor of the present invention, It is possible to shorten the processing time for manufacturing the touch panel sensor by collectively producing a plurality of insulating films on which the electrode pattern and the protective coating pattern are formed while drawing out the insulating original plate corresponding to the electrode pattern.

Further, in the method of manufacturing a touch panel sensor of the present invention and the method of manufacturing a touch panel sensor according to the present invention, the two electrode films are provided on both surfaces of one insulating film, It is possible to minimize defects due to positional errors that may occur in the process of bonding the two films and to prevent defects of the touch panel sensor due to bubbles due to not bonding each film using the adhesive layer have.

1 is a perspective view illustrating a conventional touch panel sensor.
2 is an exploded perspective view of a touch panel sensor according to an embodiment of the present invention.
3 is a front view of the insulating film shown in Fig.
4 (a) and 4 (b) are a front view and a rear view of the insulating film shown in Fig. 2, respectively.
FIG. 5 is a view illustrating a process of forming an electrode pattern and a protective coating pattern on an insulation plate for an insulation film used in the touch panel sensor of FIG. 2. Referring to FIG.
FIG. 6 is a front view of the insulation plate after the process shown in FIG. 5.
FIG. 7 is a view illustrating a process of forming another electrode pattern and a protective coating pattern on the other surface of the insulation plate shown in FIG.
8 is a front view of an insulation film that can be used in a touch panel sensor according to another embodiment of the present invention.
FIG. 9 is a state diagram of an insulation plate for the insulation film of FIG. 8. FIG.
10 is a partial front view and partial cross-sectional view of an insulation film in which an electrode pattern, an electrode coating pattern, and a protective coating pattern, which can be used in a touch panel sensor according to another embodiment of the present invention, are sequentially laminated.
11 is a partial front view and partial cross-sectional view of an insulating film in which an electrode pattern, an electrode coating pattern, and a protective coating pattern, which can be used for a touch panel sensor according to another embodiment of the present invention, are sequentially laminated.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments. For reference, the same numbers in this description refer to substantially the same elements and can be described with reference to the contents described in the other drawings under these rules, and the contents which are judged to be obvious to the person skilled in the art or repeated can be omitted.

The present invention relates to a method of manufacturing a touch panel sensor for sensing a contact position of a target object placed on a display and a touch panel sensor provided through the manufacturing method. Hereinafter, referring to Figs. 2 to 8, A manufacturing method of the touch panel sensor will be described in detail.

FIG. 2 is an exploded perspective view of a touch panel sensor according to an embodiment of the present invention, FIG. 3 is a front view of the insulating film shown in FIG. 2, and FIGS. 4 (a) FIG. 5 is a view illustrating a process of forming an electrode pattern and a protective coating pattern on an insulation plate for an insulation film used in the touch panel sensor of FIG. 2. FIG. 6 is a cross- FIG. 7 is a view illustrating a process of forming another electrode pattern and a protective coating pattern on the other surface of the insulating plate shown in FIG. 6. Referring to FIG.

The touch panel sensor according to the present embodiment includes an upper substrate 110, an optical adhesive layer 120, an insulating film 200, and a circuit board 130 as shown in FIG.

Since the upper substrate 110 is directly touched by a part of the body, a rigid glass substrate which is excellent in strength and can not be easily refracted is used, or a polycarbonate (not necessarily a glass material) polycarbonate) may be used.

In addition, a frame-shaped window decoration 112 is provided on the bottom surface of the upper substrate 110. The window decoration 112 is a transparent element of the insulating film 200 disposed below the window decoration 112. For example, It may be provided as a use for covering the circuit board and the wire member disposed at the edge of the film 200. [

In the case of the insulating film 200, the shape of the insulating film 200 is firmly supported by the display disposed at the lower portion thereof, and the portion of the body is not directly touched. Therefore, polyethylene, polypropylene, , Acryloyl, polyethylene terephthalate (PET), and the like can be used.

On the other hand, the optical adhesive layer 120 may be used for bonding the upper substrate 110 and the insulating film 200, and may be an optical adhesive film or OCA (Optically Clear Adhesive) A film can be used.

Terminals electrically connected to the first and second wire members 270 and 275 formed on both surfaces of the insulating film 200 may be disposed on the circuit board 130. Therefore, when the object approaches the surface of the upper substrate 110, a change in the capacitance value caused by the mutual action of the first and second electrode patterns 220 and 225 occurs along the first and second wire members 270 and 275 And the control unit corresponding to the external device can calculate the touch position using the change of the value.

Hereinafter, a schematic configuration and components of the touch panel sensor according to the present invention are described. Hereinafter, first and second electrode patterns for generating an electric signal by approaching the touch panel sensor are formed on both surfaces The insulating film will be described.

Fig. 3 is a view showing a front face and a back face of the insulating film together, and Fig. 4 is a view showing a front face and a back face of the insulating film, respectively.

3 to 4, the first electrode pattern 220 provided on the upper surface (front surface) of the insulating film 200 is formed directly on the flat insulating film 200 without being refracted, so that there is almost no breakage during use. Similarly, the second electrode pattern 225 provided on the bottom surface (back surface) of the insulating film 200 is also formed on the flat insulating film 200 without refraction.

The first and second electrode patterns 220 and 225 are prevented from being oxidized because they are not exposed to the outside by the first and second protective coating patterns 230 and 235, respectively, which can be provided from a synthetic resin material.

In addition, since the first and second electrode patterns 220 and 225 are protected by the first and second protective coating patterns 230 and 235, the first and second electrode patterns 220 and 225 can be formed to a very thin thickness of 1 μm or less, It is possible to provide an electrode pattern having a light-transmitting property even by using a metal.

For example, in this embodiment, a first silver fiber solution 210 including a silver nano fiber, a synthetic resin, and a volatile solvent is printed on the insulating film 200, and then a volatile solvent The first electrode pattern 220 may be formed. When the volatile solvent is removed, only the synthetic resin and the silver nanofibers on the fiber form remain to form the first electrode pattern 220. The silver nanofibers contained in the first electrode pattern 220 are transferred to the insulating film 200 As shown in Fig.

For reference, in this embodiment, silver nanowires are described as metal nanofibers as the material of the electrode pattern, but other metal fiber fibers or wires can be used.

In addition, although the first and second electrode patterns 220 and 225 in the present embodiment are provided so as to include a connecting portion for connecting and connecting the extending portions of a square or diamond shape in series, Or the lower portion may be connected and electrically connected to each other in two or more groups, and the present invention is not limited by the shape of the electrode pattern.

The first electrode pattern 220 and the first protective coating pattern 230 may be referred to as a first electrode pattern 220 and a second protective coating pattern 235, A description of the first electrode pattern 220 and the first protective coating pattern 230 may be referred to.

However, if the amount of the resin (synthetic resin) is increased, the seating state of the silver nanofibers may be stable, but the conductivity of the first electrode pattern 220 may be lowered. Thus, it is desirable to provide a minimal amount of resin, but this too can not be minimized to maintain a stable seating condition of the silver nanofibers.

Therefore, in the present invention, the amount of resin is minimized, but the silver nanofibers placed on the insulating film 200 unstably are squeezed by using the first protective coating pattern 230. The first electrode pattern 220, which is stably pressed on the insulating film 200 by the first protective coating pattern 230, minimizes electric shorts due to external physical impact during use of the touch panel sensor , And can also escape from the chemical effects of being exposed to oxygen and oxidized.

The end of the first electrode pattern 220 exposed to the outside of the first protective coating pattern 230 may be electrically connected to the terminal of the circuit board 130 through the first wire member 270. However, in another embodiment of the present invention, the end portion of the first electrode pattern exposed to the outside of the first protective coating pattern may be covered and protected by a separate conductive first electrode coating pattern. In this case, The first wire member formed on the insulating film to connect the device may electrically connect the first electrode pattern and the external device via the first electrode coating pattern.

In particular, the present invention has been described with respect to the touch panel sensor according to the present invention, in particular, the first and second electrode patterns for generating an electric signal by approaching the object are formed on both sides. A process of providing an electrode pattern and a protective coating pattern on the substrate will be described.

The electrode pattern and the protective coating pattern may be individually formed on the insulating film of the size used for the touch panel sensor. However, in this embodiment, a plurality of insulating films 200 are collectively produced while winding the insulating disk 205 corresponding to at least one insulating film 200 on the first take-up roller 102 , Thereby shortening the processing time for manufacturing the touch panel sensor.

The insulating base plate 205 may be provided in a size corresponding to at least one of the upper substrate 110 or the insulating film 200. In this embodiment, a process for forming the insulating film 200 of 1 * x at a time And may be designed to change to x * y such as 5 * 5, 6 * 6, 3 * 4, etc. depending on the intention of the manufacturer.

The insulating film 200 formed to have a size corresponding to the plurality of upper substrates 110 may have a size corresponding to one upper substrate 110 before the upper substrate 110 is bonded to the upper substrate 110 through the optical adhesive layer 120 It can be cut and used along a cutting line indicated by a dotted line in Fig.

5, the insulating plate 205 includes an electrode pattern printing unit 101 for printing the first silver fiber solution 210 while being drawn out from the first winding roller 102, A heat treatment part 103 for heat-treating the first silver fiber solution 210 and a protective coating printing for forming a first protective coating pattern 230 on the insulating film 200 on which the first electrode pattern 220 is formed. Section 105, and then can be wound again on the second take-up roller 104. [0064] For reference, in this embodiment, the first protective coating pattern 230 may be provided with a US hardener or a synthetic resin to which an ultraviolet hardening agent is added, and may be hardened through the hardening unit 107 through the protective coating printing unit 105.

The insulating base plate 205 wound around the second winding roller 104 can be cut out correspondingly to the insulating film 200 while being drawn out during use.

The second electrode pattern 225 and the second protective coating 230 may be formed on the other surface of the insulating film 200 having the first electrode pattern 220 and the first protective coating pattern 230 formed on one surface thereof, Pattern 235 may be further provided.

This process includes an electrode pattern printing unit 101 for printing the second silver fiber solution 215 again while pulling out the insulating plate 205 from the second winding roller 104, A heat treatment section 103 for heat treating the fiber solution 215 and a protective coating printing section 105 for providing a second protective coating pattern 235 on the insulating film 200 on which the second electrode pattern 225 is formed ), And then can be wound on the third winding roller 106 again.

The electrode pattern and the protective coating pattern are formed on one surface of the insulating plate and the other electrode pattern and the protective coating pattern are formed on the other surface of the insulating plate using the insulating plate having the electrode pattern and the protective coating pattern. It is also possible to form them together.

In addition, by forming electrode patterns on both surfaces of one insulating film without providing the two films with lower and upper ITO electrodes in interaction with each other as in the conventional case, It is possible to minimize defects due to the positional error of the touch panel sensor, and it is possible to prevent defects of the touch panel sensor due to bubbles due to not bonding each film using the adhesive layer.

FIG. 8 is a front view of an insulation film that can be used in a touch panel sensor according to another embodiment of the present invention, and FIG. 9 is a state in which a wire coating layer for a wire member is provided on an insulation plate.

Hereinafter, the electrode pattern, the protective coating pattern, and the electrode coating pattern stacked on one side of the insulating film will be described in the touch panel sensor of the present embodiment, and the description of other electrode patterns, protective coating pattern, and wire coating layer formed on the other side Can be omitted. The wire coating layer, the electrode coating pattern, and other components (protective coating pattern, electrode pattern, and wire member) other than the through holes for positioning, which are different from the foregoing embodiment, are substantially the same as those in the previous embodiment. The same reference numerals as those of the first protective coating pattern, the first electrode pattern, and the first wire member are used.

The electrode coating pattern 240 may be formed by gravure printing, offset printing, silk screen printing or the like corresponding to the end portion of the electrode pattern 220 exposed to the outside of the protective coating pattern 230 , And these methods are advantageous for forming an electrode coating pattern by methods capable of printing at a thin thickness of 10 mu m or less.

On the other hand, the insulating sheet 200 shown in FIG. 8 can be provided by cutting the insulating plate 205 shown in FIG. 9 as described above.

In addition, a wire member may be formed on the insulating film 200 to connect the electrode pattern 220 and the external device. In this embodiment, the wire member may include a protective coating pattern 230, A wire coating layer 250 covering the entire surface of the insulating base plate 205 may be provided on the insulating base plate 205 on which the insulating base plate 205 is formed and patterned.

In this embodiment, the electrode coating pattern 250 is provided and then the wire coating layer 250 for the wire member is provided. However, in some cases, when the wire coating layer is patterned, the electrode coating pattern and the wire member are formed together It is also possible.

Referring again to FIG. 9, since the wire coating layer 250 is provided in a layered state of an opaque metal, it may be difficult to pattern the electrode pattern 220 so as to be accurately connected to the end portion of the electrode pattern 220. Therefore, the wire coating layer 250 may be provided with a through hole 260 for confirming the position of the end of the electrode pattern 220 covered with the wire coating layer 250.

The electrode coating pattern 240 is opaque but is disposed outside the touch region where the electrode pattern is disposed and is later shielded by the window decoration 112 formed on the bottom surface of the upper substrate 110 after being bonded to the upper substrate, It is not visible.

It is also possible to first provide an electrode pattern, a protective coating pattern, and an electrode coating pattern on an insulating disk, wind the wire coating layer on the rollers without being patterned, and supply it to the maker of the touch panel sensor, The wire member can be manufactured to a desired design through patterning using an insulating disk having a coating layer formed thereon.

10 is a partial front view and partial cross-sectional view of an insulation film in which an electrode pattern, an electrode coating pattern, and a protective coating pattern, which can be used in a touch panel sensor according to another embodiment of the present invention, are sequentially laminated.

Hereinafter, the electrode patterns, the electrode coating patterns, and the protective coating patterns stacked on the insulating film in the present embodiment can be referred to in the preceding embodiments. In the present embodiment, And the reference numerals of the electrode pattern, the electrode coating pattern, and the protective coating pattern are denoted by the same reference numerals as those of the previous embodiment.

Referring to FIG. 10, an electrode pattern 220 is formed on the insulating film 200, and an electrode coating pattern 240 covering a part of the end of the electrode pattern 220 is formed. A protective coating pattern 230 is formed to cover a part of the electrode coating pattern 240 and the electrode pattern 220 as a whole.

8, the electrode coating pattern 240 may be formed so as to cover only a portion of the protective coating pattern 230 that is exposed to the outside of the protective coating pattern 230. In this embodiment, And further covers a portion of the electrode pattern 220 inside the protective coating pattern 230 adjacent to the end.

As shown in FIG. 8, when the electrode coating pattern covers only the portion of the electrode pattern exposed outside the protective coating pattern, the electrode pattern may be exposed at the boundary between the electrode coating pattern and the protective coating pattern, Cracks or oxidation of the part may occur.

The electrode coating pattern 240 may be formed on the electrode pattern 220 inside the protective coating pattern 230 adjacent to the end with the end of the electrode pattern 220 exposed outside the protective coating pattern 230, ), It is possible to solve the above problem.

11 is a partial front view and partial cross-sectional view of an insulating film in which an electrode pattern, an electrode coating pattern, and a protective coating pattern, which can be used for a touch panel sensor according to another embodiment of the present invention, are sequentially laminated.

Hereinafter, the electrode patterns, the electrode coating patterns, and the protective coating patterns stacked on the insulating film in the present embodiment can be referred to in the preceding embodiments. In the present embodiment, And the reference numerals of the electrode pattern, the electrode coating pattern, and the protective coating pattern are denoted by the same reference numerals as those of the previous embodiment.

Referring to FIG. 11, an electrode pattern 220 is formed on the insulating film 200, and a portion of the electrode pattern 220 is covered with the electrode coating pattern 240. A protective coating pattern 230 is formed to cover a part of the electrode coating pattern 240 and the electrode pattern 220 as a whole.

The protective coating pattern 230 covers the entire electrode pattern 220 on the insulating film 200 and includes a through area 231 for exposing a part of the end of the electrode pattern 220. Accordingly, the protective coating pattern 230 is exposed to the penetration area 231, and the exposed protective coating pattern 230 can be electrically connected to the external device through the wire member at a later time.

Meanwhile, in this embodiment, the electrode coating pattern is formed first in correspondence with the end portion of the electrode pattern, and the protective coating pattern is provided so that the through region is located at the position corresponding to the electrode coating pattern. However, It is also possible to form a coating pattern and to provide an electrode coating pattern in the penetration area formed in the protective coating pattern.

Although the present invention has been described with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that

101: electrode pattern printing section 102: second winding roller
103: heat treatment unit 104: second winding roller
105: Protective coating printing section 106: Third winding roller
110: upper substrate 112: window decoration
120: optical adhesive layer 130: circuit board
200: Insulation film 210: First silver fiber solution
215: second silver fiber solution 220: first electrode pattern
225: second electrode pattern 230: first protective coating pattern
235: second protective coating pattern 240: first electrode coating pattern
245: second electrode coating pattern 250: first wire coating layer
255: second wire coating layer 260: first positioning through hole

Claims (15)

1. A method of manufacturing a touch panel sensor disposed on an upper surface of a display,
Printing an electrode pattern on an insulating film using a metal fiber solution; And
Forming a protective coating pattern partially covering the electrode pattern and the insulating film to expose a part of the end of the electrode pattern, thereby pressing the electrode pattern covered by the protective coating pattern onto the insulating film;
And a wire member electrically connected to an end of the electrode pattern exposed by the protective coating pattern to connect the electrode pattern and the external device is formed after forming a protective coating pattern on the insulating film Of the touch panel. The method according to claim 1,
Wherein the metal fiber solution comprises a metal nano fiber, a synthetic resin, and a volatile solvent,
Wherein the metal fiber solution is printed on the insulating film, then the volatile solvent is removed to form the electrode pattern, and the metal nanofibers on the fiber are pressed by the protective coating pattern. Gt; The method according to claim 1,
Wherein the protective coating pattern covers a whole of the electrode pattern on the insulating film, and includes a penetrating region for exposing a part of an end portion of the electrode pattern. The method according to claim 1,
Wherein the protective coating pattern is thicker than the electrode pattern, so that the electrode pattern is completely covered by the protective coating pattern. 1. A method of manufacturing a touch panel sensor disposed on an upper surface of a display,
Printing an electrode pattern on an insulating film using a metal fiber solution; And
Forming a protective coating pattern partially covering the electrode pattern and the insulating film to expose a part of the end of the electrode pattern, thereby pressing the electrode pattern covered by the protective coating pattern onto the insulating film;
Wherein a wire member electrically connected to an end of the electrode pattern exposed by the protective coating pattern to connect the electrode pattern and the external device is formed after forming a protective coating pattern on the insulating film,
Wherein a conductive electrode coating pattern is formed on the insulating film to cover an entire end of the electrode pattern exposed outside the protective coating pattern. 6. The method of claim 5,
Wherein the wire member formed on the insulating film to electrically connect the electrode pattern and the external device electrically connects the electrode pattern and the external device via the electrode coating pattern. Way. 6. The method of claim 5,
Wherein the electrode coating pattern extends to cover an end portion of the electrode pattern exposed outside the protective coating pattern and a portion of the electrode pattern inside the protective coating pattern adjacent to the end portion. . The method according to claim 1,
Further comprising forming the wire member on the insulating film,
Forming a wire coating layer on the insulating film on which the protective coating pattern is formed, and patterning the wire coating layer in the step of forming the wire member. 9. The method of claim 8,
Wherein the wire coating layer is formed with a through hole for position confirmation for checking an end position of the electrode pattern covered by the wire coating layer. The method according to claim 1,
An electrode pattern printing unit for printing the metal fiber solution while drawing an insulating disc corresponding to at least one of the insulating films from the first take-up roller, a heat treatment unit for heat-treating the metal fiber solution, And a protective coating printing section for providing a protective coating pattern on the insulating film, and is wound on the second winding roller again. 11. The method of claim 10,
Wherein the insulating plate is cut to correspond to the insulating film. 11. The method of claim 10,
Wherein the electrode pattern and the protective coating pattern are formed on the other surface of the insulating film, and the electrode pattern and the protective coating pattern corresponding to the electrode pattern and the protective coating pattern are provided on the other surface of the insulating film. Way. 13. The method of claim 12,
Wherein the other electrode pattern and the other protective coating pattern are formed together with the electrode pattern and the protective coating pattern formed on one surface of the insulating film. The method according to claim 1,
Wherein the step of printing the electrode pattern on the insulating film using the metal fiber solution uses gravure, reverse gravure, offset, silk screen, or a hydrophilic / hydrophobic printing method. A touch panel sensor manufactured by the manufacturing method of the touch panel sensor according to any one of claims 1 to 14.

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