WO2014084618A1

WO2014084618A1 - Method for manufacturing touch panel sensor, and touch panel sensor

Info

Publication number: WO2014084618A1
Application number: PCT/KR2013/010885
Authority: WO
Inventors: 박철
Original assignee: (주)삼원에스티
Priority date: 2012-11-29
Filing date: 2013-11-28
Publication date: 2014-06-05

Abstract

A method for manufacturing a touch panel sensor that is arranged above a display so as to detect a contact position of a target object may include the steps of: printing an electrode pattern on an insulation film using a metal fiber solution; and forming a protective coating pattern that partially covers the electrode pattern and insulation film so as to expose one part of the end portion of the electrode pattern.

Description

Manufacturing Method of Touch Panel Sensor and Touch Panel Sensor

The present invention relates to a method for 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.

Referring to FIG. 1, in the conventional touch panel sensor, the lower insulating sheet 10 and the upper insulating sheet 20 are bonded to each other by a predetermined interval. The lower ITO electrode 30 and the upper ITO electrode 40 are vertically arranged on the opposite surfaces of the lower insulating sheet 10 and the upper insulating sheet 20, and specifically, the lower ITO electrode 30 is The upper surface of the lower insulating sheet 10 is oriented from left to right, and 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, a predetermined capacitance, that is, a capacitance value corresponding to the area of each intersection point, exists at each intersection point of the lower ITO electrode 10 and the upper ITO electrode 20 arranged to cross each other. If a part is close, the area of the body part is added to the area of the upper ITO electrode 20 disposed on the upper part, thereby changing the capacitance value.

In addition, in order to electrically connect the upper ITO electrode 40 and the electrode 52 of the external circuit board 50, a connecting line 48 made of metal is formed from the end of the upper ITO electrode 40 from the upper insulating sheet 20. It extends to the bottom of the), the lower ITO electrode 20 is also connected to the circuit board 50 by a separate connection line.

In this case, the connecting line 48, which is generally provided as a metal, is shiny with metallic luster and does not pass through the light, so that the connecting line 48 may be visually confirmed on the upper portion of the transparent upper insulating sheet 20. Therefore, in the related art, a separate non-translucent film for window decoration 65 is formed on the bottom of the reinforcing substrate 60 such as glass or translucent reinforced plastic so that the connecting line 48 and the circuit board 50 are not visually checked. The reinforcing substrate 60 is disposed on the upper insulating sheet 20.

However, providing a separate reinforcement substrate 60 further on the upper insulating sheet 20 results in an increase in the thickness of the touch panel sensor, and thus, a touch panel sensor disclosed recently in Publication No. 10-2011-0137231. As described above, referring to FIG. 5, the 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, such a structure is that when the upper ITO electrode 40 is bent at the boundary portion A, when the body part is in contact with the touch panel sensor, the upper ITO electrode 40 bends and deflects the upper insulating sheet 20 minutely up and down. It can easily cause breakage of the upper ITO electrode 40. Therefore, such a touch panel sensor process is not practically suitable for making a product.

The present invention provides a method for 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 even by the refraction or external impact of the upper insulating sheet generated by the user's contact. .

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

When using a metal nanofiber as an electrode pattern that can be applied to the touch panel sensor, it must be provided very thin to have light transmittance. The present invention provides a method for manufacturing a touch panel sensor and a touch panel sensor which can prevent the thin electrode pattern from being easily damaged from external physical / chemical effects.

In addition, it is possible to lower the defective rate due to position error generated when the components of the touch panel sensor are bonded, and to minimize the defective rate of the touch panel sensor due to bubbles generated by using an adhesive layer when bonding the components of the touch panel sensor. It provides a method for manufacturing a touch panel sensor and a touch panel sensor.

According to an exemplary embodiment of the present invention, a method of manufacturing a touch panel sensor disposed on an upper part of a display to detect a contact position of an object includes printing an electrode pattern on an insulating film using a metal fiber solution, and an electrode. The method may include forming a protective coating pattern partially covering the electrode pattern and the insulating film to expose a portion of the end portion of the pattern.

First, the electrode pattern of the present invention is formed directly on the flat insulating film without refraction, so that there is almost no breakage during use.

In addition, since the electrode pattern is not exposed to the outside by the transparent protective coating pattern, oxidation is prevented. In particular, the protective coating pattern may be formed to be thicker than the thickness of the electrode pattern to about 0.5 ㎛ or more so that the electrode pattern of about 0.1 to 0.2 ㎛ is not exposed to the surface of the protective coating pattern, so that the electrode pattern is completely formed by the protective coating pattern Is covered.

Further, in the present invention, since the electrode pattern is protected by the protective coating pattern, it is possible to form a very thin thickness. Thus, it is possible to provide an electrode pattern having transparency even when using metal.

For example, a metal fiber solution containing metal nanofibers, synthetic resins, and volatile solvents may be provided on an insulating film by printing using gravure, reverse gravure, offset, silkscreen, or hydrophilic / hydrophobic printing. Then, the volatile solvent may be removed by a curing process to form an electrode pattern. When the volatile solvent is removed, only the metal nanofibers on the resin and the fiber remain to form the electrode pattern, and the metal nanofibers included in the electrode pattern may remain seated on the insulating substrate by the resin.

However, when the amount of resin (synthetic resin) increases, the seating state of the metal nanofiber may be stable, but a problem may occur in that the conductivity of the electrode pattern is lowered. Therefore, it is desirable to provide a minimum amount of resin, but this cannot be reduced indefinitely in order to maintain a stable seating state of the metal nanofibers.

Therefore, in the present invention, the amount of resin is minimized, but the metal nanofibers unstablely mounted on the insulating film are compressed using a protective coating pattern. The electrode pattern stably squeezed onto the insulating film by the protective coating pattern minimizes the electrical short circuit caused by external physical impact during the use of the touch panel sensor, and also escapes from the chemical effects of oxidation by exposure to oxygen. Can be.

In addition, the end of the electrode pattern exposed to the outside of the protective coating pattern can be protected by covering with a conductive electrode coating pattern. The electrode coating pattern may press the end of the electrode pattern exposed to the outside of the protective coating pattern to stabilize the seating state on the insulating film, prevent oxidation, and prevent scratching or damage during the process.

The electrode coating pattern may be formed to cover only a portion exposed to the outside of the protective coating pattern, in some cases, the electrode coating pattern is the end of the electrode pattern exposed to the outside of the protective coating pattern and the protective coating pattern adjacent to the end The electrode pattern may be extended to further cover a portion of the electrode pattern.

When the electrode coating pattern covers only the electrode pattern portion 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 cracking or oxidation of the exposed portion during use occurs. However, the above problem may be solved by forming the electrode coating pattern 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 to the outside of the protective coating pattern.

In addition, the electrode coating pattern may be a transparent material such as a transparent conductive ceramic, and the electrode coating pattern may be provided as an opaque material that is later covered by window decoration.

In addition, a welding process of compressing the electrode pattern after removing the volatile solvent to form the electrode pattern may be added. 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 protective coating pattern and the electrode coating pattern may be freely determined in accordance with the intention of the designer. However, when the protective coating pattern covers the entire electrode pattern on the insulating film but includes a through area exposing a part of the end portion of the electrode pattern, the electrode coating pattern is first formed corresponding to the end of the electrode pattern, and then the electrode coating pattern is formed on the electrode coating pattern. It is desirable to provide a protective coating pattern such that the through area is located at a corresponding position.

In this case, the wire member formed on the insulating film to connect the electrode pattern and the external device can be electrically connected to the electrode pattern and the external device via the electrode coating pattern, the electrode coating pattern to cover only the ends of the electrode pattern, respectively It can be provided patterned from the beginning in the same way as silkscreen printing.

In addition, the wire member formed on the insulating film for connecting 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, patterning the wire coating layer.

However, since the wire coating layer is provided in a opaque metal layer state, it may be difficult to accurately pattern the wire coating layer to be connected to the end of the electrode pattern. Accordingly, the through-coating hole for confirming the position of the end portion of the electrode pattern covered by the wire coating layer may be formed.

In addition, an electrode pattern and a protective coating pattern may be separately formed each time on an insulating film having a size used for one touch panel sensor. However, in the present invention, by producing a plurality of insulating films in a batch while providing an insulating disc corresponding to at least one insulating film to the first winding roller, the process time for manufacturing the touch panel sensor can be shortened. have.

Specifically, the insulating disc is drawn out of the first winding roller, and the protective pattern is formed on the insulating film on which the electrode pattern printing unit for printing the metal fiber solution, the heat treatment unit for heat treatment of the metal fiber solution, and the electrode pattern is formed. It can pass through the protective coating printing portion in order, and then can be wound again on the second winding roller.

The insulating disc wound on the second winding roller may be cut and used corresponding to the insulating film at the time of use.

In addition, the above-described process may further provide another electrode pattern and the protective coating pattern corresponding to the electrode pattern and the protective coating pattern on the other surface of the insulating film, the electrode pattern and the protective coating pattern is already formed on one surface, this process As described above, it may be made through the process of withdrawing from the second winding roller. Of course, in the process of forming the electrode pattern and the protective coating pattern on one surface, it is also possible to form the electrode pattern and the protective coating pattern corresponding to the other surface.

In addition, by forming electrode patterns on both sides of a single insulating film instead of providing the two films each having a lower and an upper ITO electrode to interact with each other as in the prior art, it may occur in the process of bonding two films. It is possible to minimize the defect due to the position error, and to prevent the failure of the touch panel sensor due to the bubble generation by not bonding each film using the adhesive layer.

The method of manufacturing the touch panel sensor and the touch panel sensor of the present invention can be prevented from being damaged during use because the electrode pattern is directly formed on the flat insulating film without refraction.

In addition, in the method of manufacturing the touch panel sensor and the touch panel sensor of the present invention, since the electrode pattern is not exposed to the outside by the transparent protective coating pattern, oxidation is prevented.

In addition, since the electrode pattern is protected by the protective coating pattern in the method of manufacturing the touch panel sensor and the touch panel sensor of the present invention, it is possible to form a very thin thickness. Thus, it is possible to provide an electrode pattern having transparency even when using metal.

In particular, in the case of providing the electrode pattern using the metal nanofibers and the resin, when 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 deposited on the insulating film while minimizing the amount of resin, it is pressed by the protective coating pattern conductive Improvements can also be expected. In addition, the electrode pattern in the crimped state may not only minimize electric short circuits due to external physical shocks during use of the touch panel sensor but also escape from chemical effects of exposure to oxygen.

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

In addition, in the method of manufacturing the 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 the wire coating layer is patterned to provide a wire member, thereby designing the wire member as the manufacturer desires. can do.

In addition, in the manufacturing method of the touch panel sensor and the touch panel sensor of the present invention, the through-coating hole for confirming the position of the end of the electrode pattern covered by the wire coating layer is formed on the wire coating layer provided in the opaque metal layer state. By doing so, in the process of patterning the wire coating layer, the wire member can be accurately positioned at the end of the electrode pattern.

In addition, although the electrode pattern and the protective coating pattern may be individually formed on the insulating film of the size used for one touch panel sensor each time, at least one insulating film in the manufacturing method and the touch panel sensor of the touch panel sensor of the present invention. By simultaneously producing a plurality of insulating films in which the electrode pattern and the protective coating pattern are formed while drawing the insulating disc corresponding to the winding roller, the process time for manufacturing the touch panel sensor can be shortened.

In addition, in the manufacturing method of the touch panel sensor and the touch panel sensor of the present invention, the electrode patterns on both sides of one insulating film are not provided to each of the two films each having lower and upper ITO electrodes to interact with each other as in the prior art. By forming a, it is possible to minimize the defect due to the position error that can occur in the process of bonding the two films, each film is not bonded using the adhesive layer to prevent the failure of the touch panel sensor due to the bubble generation. 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 exemplary embodiment of the present invention.

3 is a front view of the insulating film shown in FIG. 2.

4 (a) and 4 (b) are front and rear views of the insulating film shown in FIG. 2, respectively.

FIG. 5 is a view for explaining a process of forming an electrode pattern and a protective coating pattern on an insulating disc for an insulating film used in the touch panel sensor of FIG. 2.

FIG. 6 is a front view of the insulating disc through the process shown in FIG. 5.

7 is a view for explaining a process of forming another electrode pattern and a protective coating pattern on the other surface of the insulating disk shown in FIG.

8 is a front view of an insulating film that may be used in the touch panel sensor according to another embodiment of the present invention.

FIG. 9 is a state diagram of an insulating disc for the insulating film of FIG. 8.

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

FIG. 11 is a partial front view and a partial cross-sectional view of an insulating film in which electrode patterns, electrode coating patterns, and protective coating patterns that may be used in a touch panel sensor according to another embodiment of the present invention are sequentially stacked.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments. For reference, in the present description, the same numbers refer to substantially the same elements, and may be described by referring to the contents described in the other drawings under these rules, and the contents determined to be obvious to those skilled in the art or repeated may be omitted.

The present invention relates to a method of manufacturing a touch panel sensor for sensing a contact position of an object and a touch panel sensor provided through the manufacturing method, which will be described below with reference to FIGS. 2 to 8. The manufacturing method of the touch panel sensor according to the present invention will be described in detail.

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. 4A and 4B are respectively shown in FIG. 2. 5 is a front view and a rear view of the insulating film, and FIG. 5 is a view for explaining a process of forming an electrode pattern and a protective coating pattern on an insulating disc for the insulating film used in the touch panel sensor of FIG. 5 is a front view of the insulating disc that has undergone the process shown in FIG. 5, and FIG. 7 is a view for explaining a process of forming another electrode pattern and a protective coating pattern on the other surface of the insulating disc shown in FIG. 6.

The touch panel sensor according to the present exemplary embodiment includes an upper substrate 110, an optical adhesive layer 120, an insulating film 200, and a circuit board 130 as shown in FIG. 2.

Since the upper substrate 110 is directly touched by a body part, a rigid glass substrate having high strength and not easily refracted or a polycarbonate (not necessarily glass material) that transmits light and has high strength and is not easily refracted may be used. reinforced plastics such as polycarbonate) can be used.

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

For reference, in the case of the insulating film 200, since its shape is firmly supported by the display disposed below and is not directly touched by a part of the body, the material is polyethylene or polypropylene. It can be formed using a material such as plastic and glass, such as acrylic (acryloyl), polyethylene terephthalate (PET).

On the other hand, the optical adhesive layer 120 may be used for bonding the above-mentioned upper substrate 110 and the insulating film 200, the light is well transmitted optically excellent optical adhesive film or OCA (Optically Clear Adhesive) Films can be used.

In addition, the circuit board 130 may be provided with terminals electrically connected to the first and

second wire members

270 and 275 formed on both surfaces of the insulating film 200, respectively. Therefore, when an object approaches the surface of the upper substrate 110, the change in capacitance value caused by the interaction between the first and

second electrode patterns

220 and 225 is along the first and

second wire members

270 and 275. The touch position may be transmitted to an external device, and the control unit corresponding to the external device may calculate the touch position by using the change in the value.

As mentioned above, the schematic configuration and components of the touch panel sensor according to the present invention have been described. Hereinafter, the first and second electrode patterns for generating an electrical signal by approaching the touch panel sensor, in particular, are formed on both surfaces. The insulating film will be described.

Figure 3 is a view showing the front and back of the insulating film, Figure 4 is a view showing the front and back 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 directly formed on the flat insulating film 200 without refraction, and thus there is almost no breakage during use. Similarly, the second electrode pattern 225 provided on the bottom (back) of the insulating film 200 is also formed on the flat insulating film 200 without refraction.

Since the first and

second electrode patterns

220 and 225 are not exposed to the outside by the first and second

protective coating patterns

230 and 235, which may be each made of a synthetic resin material, oxidation is prevented.

Furthermore, in the present invention, since the first and

second electrode patterns

220 and 225 are protected by the first and second

protective coating patterns

230 and 235, it is possible to form a very thin thickness of 1 μm or less. Although metal is used, it is possible to provide an electrode pattern having transparency.

For example, in the present embodiment, the first silver fiber solution 210 including silver nanofibers, synthetic resins, and volatile solvents is printed on the insulating film 200, and then volatile solvents are subjected to a heat treatment process. The first electrode pattern 220 may be formed by removing the first electrode pattern 220. When the volatile solvent is removed, only silver nanofibers on the synthetic resin and the fiber remain to form the first electrode pattern 220. The silver nanofibers included in the first electrode pattern 220 are formed on the insulating film 200 by resin. It can stay seated on.

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

In addition, in the present embodiment, the first and

second electrode patterns

220 and 225 are provided to include connecting portions connecting and connecting a series of square to diamond shapes in series. The lower part may be provided in a group shape in which two or more are electrically connected, and the present invention is not limited by the shape of the electrode pattern.

In addition, in the detailed description of the present embodiment, the first electrode pattern 220 and the first protective coating pattern 230 will be described, and the first electrode pattern 220 and the second protective coating pattern 235 will not be mentioned. Reference may be made to the description of the first electrode pattern 220 and the first protective coating pattern 230.

However, when the amount of resin (synthetic resin) increases, the seating state of the silver nanofiber may be stable, but a problem may occur in that the conductivity of the first electrode pattern 220 is lowered. Therefore, it is desirable to provide a minimum amount of resin, but this too can not be reduced indefinitely in order to maintain a stable seating state of silver nanofibers.

Therefore, in the present invention, the amount of resin is minimized, but the silver nanofibers unstablely mounted on the insulating film 200 are compressed using the first protective coating pattern 230. Thus, the first electrode pattern 220 that is stably pressed onto the insulating film 200 by the first protective coating pattern 230, as well as the electrical short circuit is minimized by the external physical impact during the use of the touch panel sensor later. They can also escape chemical effects of oxidation by exposure to oxygen.

In addition, an end portion 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, an end 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, wherein the first electrode pattern and the outside The first wire member formed on the insulating film to connect the device may electrically connect the first electrode pattern and the external device through the first electrode coating pattern.

The touch panel sensor according to the present embodiment, in particular, the insulating film formed on both sides of the first and second electrode patterns for generating an electrical signal by the approach of the object has been described, below with reference to Figures 5 to 7 The process of providing an electrode pattern and a protective coating pattern on it is demonstrated.

The electrode pattern and the protective coating pattern may be separately formed on an insulating film having a size used for one touch panel sensor each time. However, in the embodiment of the present invention, at least one insulating film 205 corresponding to the at least one insulating film 200 is wound around the first winding roller 102 and provided to produce a plurality of insulating films 200 collectively. Thus, the process time for manufacturing the touch panel sensor can be shortened.

The insulating disc 205 may be provided in a size corresponding to at least one or more of the upper substrate 110 or the insulating film 200, and in this embodiment, the process of forming the insulating film 200 of 1 * x at a time. According to the manufacturer's intention, the design can be changed to x * y such as 5 * 5, 6 * 6, 3 * 4, etc.

The insulating film 200 manufactured to have a size corresponding to the plurality of upper substrates 110 may have a size corresponding to one upper substrate 110 before the optical bonding layer 120 is bonded to the upper substrate 110. 6 may be cut and used along a cutting line indicated by a dotted line.

Referring to Figure 5 in more detail the manufacturing process, the insulating disk 205 is drawn out from the first winding roller 102, the electrode pattern printing unit 101 for printing the first silver fiber solution 210, Protective coating printing for forming the first protective coating pattern 230 on the insulating film 200 on which the heat treatment unit 103 and the first electrode pattern 220 are formed to heat-treat the first silver fiber solution 210. The part 105 may be passed sequentially, and then may be wound up again by the second winding roller 104. For reference, in the present embodiment, the first protective coating pattern 230 may be provided as a synthetic resin to which a US curing agent or an ultraviolet curing agent is added, and may be cured through the protective coating printing unit 105 and the curing unit 107.

The insulating original plate 205 wound on the second winding roller 104 may be cut out and used to correspond to the insulating film 200 while being drawn out in use.

In addition, the second electrode pattern 225 and the second protective coating on the other surface of the insulating film 200 in which the first electrode pattern 220 and the first protective coating pattern 230 are already formed on one surface through the above-described process. The pattern 235 may be further provided.

As shown in FIG. 7, the electrode pattern printing unit 101 and the second silver for printing the second silver fiber solution 215 again while drawing out the insulating disc 205 from the second winding roller 104. Protective coating unit 105 for providing a second protective coating pattern 235 on the heat treatment unit 103 for heat-treating the fiber solution 215, and the insulating film 200 on which the second electrode pattern 225 is formed. ) May be sequentially passed through, and then may be wound up again by the third winding roller 106.

As described above, for example, the other electrode pattern and the protective coating pattern are formed on the other surface of the insulating plate by using the insulating disc having the electrode pattern and the protective coating pattern formed on one surface thereof, but each pattern is formed on one surface and the other surface of the insulating plate. It is also possible to form them together.

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

Hereinafter, in the touch panel sensor of the present embodiment, an electrode pattern, a protective coating pattern, and an electrode coating pattern stacked on one surface of the insulating film will be described, and descriptions of other electrode patterns, protective coating patterns, and wire coating layers formed on the other surface will be described. Can be omitted. In addition, other components (protective coating pattern, electrode pattern, and wire member) other than the wire coating layer, the electrode coating pattern, and the positioning through hole, which are different from the previous embodiment, are substantially the same as the previous embodiment. The same reference numerals as in the first protective coating pattern, the first electrode pattern, and the first wire member are used.

As shown in FIG. 8, the electrode coating pattern 240 corresponds to an end portion of the electrode pattern 220 exposed outside the protective coating pattern 230, such as gravure printing, offset printing, or silkscreen printing. It can be provided through the method of, which is advantageous to form an electrode coating pattern in a method capable of printing with a thin thickness of less than 10㎛.

Meanwhile, the insulating film 200 illustrated in FIG. 8 may be provided by cutting the insulating disc 205 illustrated 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 the present embodiment, as shown in FIG. 9, the wire member may include a protective coating pattern 230. The wire coating layer 250 covering the entire surface of the insulating disc 205 may be first provided on the formed insulating disc 205 and then patterned.

In addition, the present embodiment provides a wire coating layer 250 for the wire member after providing the electrode coating pattern 250, but in some cases forming the electrode coating pattern and the wire member together in the process of patterning the wire coating layer It is also possible.

Referring back to FIG. 9, since the wire coating layer 250 is provided in a layer state of an opaque metal material, it may be difficult to process the pattern so that the wire coating layer 250 is correctly connected to the end of the electrode pattern 220. Accordingly, the wire coating layer 250 may be provided with a positioning through hole 260 for checking the end position of the electrode pattern 220 covered by the wire coating layer 250 in various places.

Meanwhile, although the electrode coating pattern 240 is opaque, the electrode coating pattern 240 is disposed outside the touch area in which the electrode pattern is disposed, and is later covered 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.

In addition, an electrode pattern, a protective coating pattern, and an electrode coating pattern are first provided on an insulating disc, and the wire coating layer may be wound on a roller without being patterned and supplied to a manufacturer of a touch panel sensor, and the manufacturer may supply the wire. The wire member can be manufactured according to a desired design through patterning using an insulating disc having a coating layer formed thereon.

Hereinafter, the description of the electrode pattern, the electrode coating pattern, and the protective coating pattern stacked on the insulating film in the present embodiment can refer to the previous embodiment, in the present embodiment will be described focusing on the parts that are different from the previous embodiment The reference numerals of the electrode pattern, the electrode coating pattern, and the protective coating pattern use the same reference numerals as in 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 portion of an end portion of the electrode pattern 220 is formed. In addition, a protective coating pattern 230 covering the entirety of the electrode coating pattern 240 and the electrode pattern 220 is formed.

As shown in FIG. 8, the electrode coating pattern may be formed to cover only a portion exposed to the outside of the protective coating pattern. However, in the present exemplary embodiment, the electrode coating pattern 240 may be outside the protective coating pattern 230. An end portion of the electrode pattern 220 exposed to each other and a portion of the electrode pattern 220 inside the protective coating pattern 230 adjacent to the end are formed to extend further.

As shown in FIG. 8, when the electrode coating pattern covers only the electrode pattern portion 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 exposed during use. Cracking or oxidation of the part may occur.

However, as in this embodiment, the electrode pattern 220 inside the protective coating pattern 230 adjacent to the end together with the end of the electrode pattern 220 exposing the electrode coating pattern 240 to the outside of the protective coating pattern 230. By forming so as to cover a part, the above problem can be solved.

Referring to FIG. 11, an electrode pattern 220 is formed on the insulating film 200, and an electrode coating pattern 240 covers a portion of an end portion of the electrode pattern 220. In addition, a protective coating pattern 230 covering the entirety of the electrode coating pattern 240 and the electrode pattern 220 is formed.

However, the protective coating pattern 230 covers the entire electrode pattern 220 on the insulating film 200 and includes a through area 231 exposing a part of the end of the electrode pattern 220. Therefore, the protective coating pattern 230 is exposed to the through area 231, and the exposed protective coating pattern 230 may be electrically connected to an external device through a wire member.

Meanwhile, in the present embodiment, the electrode coating pattern is first formed to correspond to the end of the electrode pattern, and the protective coating pattern is provided so that the through area is positioned at the position corresponding to the electrode coating pattern. It is also possible to form the coating pattern and to provide the electrode coating pattern in the through area formed in the protective coating pattern.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

The touch panel sensor according to the present invention can be widely applied to a display for the purpose of detecting a contact position of an object.

Claims

In the manufacturing method of the touch panel sensor disposed on the display to detect the contact position of the object,

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 portion of the end portion of the electrode pattern;

Method of manufacturing a touch panel sensor comprising a.
The method of claim 1,

The metal fiber solution includes a metal nanofiber, a synthetic resin, and a volatile solvent,

After the metal fiber solution is printed on the insulating film, the volatile solvent is removed to form the electrode pattern, and the metal nanofiber on the fiber is pressed by the protective coating layer. Way.
The method of claim 1,

The protective coating pattern covers a whole of the electrode pattern on the insulating film, the manufacturing method of the touch panel sensor, characterized in that it comprises a through area for exposing a portion of the end of the electrode pattern.
The method of claim 1,

The protective coating pattern is formed thicker than the thickness of the electrode pattern manufacturing method of the touch panel sensor, characterized in that the electrode pattern is completely covered by the protective coating pattern.
The method of claim 1,

And a conductive electrode coating pattern formed on the insulating film to cover end portions of the electrode patterns exposed to the outside of the protective coating pattern.
The method of claim 5,

The wire member formed on the insulating film to connect the electrode pattern and the external device is a manufacturing method of the touch panel sensor, characterized in that for electrically connecting the electrode pattern and the external device via the electrode coating pattern.
The method of claim 5,

The electrode coating pattern is extended to cover an end portion of the electrode pattern exposed to the outside of the protective coating pattern and a portion of the electrode pattern inside the protective coating pattern adjacent to the end portion. .
The method of claim 1,

Forming a wire member formed on the insulating film for connecting the electrode pattern and the external device,

And 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 forming of the wire member.
The method of claim 8,

The wire coating layer is a manufacturing method of the touch panel sensor, characterized in that the through-hole for positioning for confirming the end position of the electrode pattern covered by the wire coating layer is formed.
The method of claim 1,

An electrode pattern printing part for printing the metal fiber solution, a heat treatment part for heat-treating the metal fiber solution, and the electrode pattern having the insulating disc corresponding to at least one of the insulating films being drawn out of the first winding roller. Method of manufacturing a touch panel sensor, characterized in that via the protective coating printing portion for sequentially providing for forming a protective coating pattern on the insulating film, it is wound again on the second winding roller.
The method of claim 10,

The insulating disc is a manufacturing method of the touch panel sensor, characterized in that the cutting used to correspond to the insulating film.
The method of claim 10,

The manufacturing of the touch panel sensor further comprises providing another electrode pattern and a protective coating pattern corresponding to the electrode pattern and the protective coating pattern on the other surface of the insulating film having the electrode pattern and the protective coating pattern formed on one surface thereof. Way.
The method of claim 12,

The other electrode pattern and the other protective coating pattern is a manufacturing method of the touch panel sensor, characterized in that formed with the electrode pattern and the protective coating pattern formed on one surface of the insulating film.
The method of claim 1,

The printing of the electrode pattern on the insulating film using the metal fiber solution is a method of manufacturing a touch panel sensor, characterized in that using a printing method using gravure, inverse gravure, offset, silkscreen or hydrophilic / hydrophobic.
A touch panel sensor manufactured by the method for manufacturing a touch panel sensor of claim 1.