KR101144152B1 - Touch panel sensor - Google Patents

Abstract

The touch panel sensor for detecting a contact of a body may include an insulating substrate, a plurality of micrometal patterns formed on the upper surface of the insulating substrate, and a plurality of transparent electrodes formed on the bottom surface of the insulating substrate so as to cross the micrometal pattern. The pattern includes a glass substrate provided on an insulating substrate and having a window decoration corresponding to an edge of the insulating substrate on one surface thereof, and an optical adhesive layer for bonding the insulating substrate and the glass substrate to each other.

Fine metal pattern, transparent electrode pattern, glass substrate

Description

Touch Panel Sensor {TOUCH PANEL SENSOR}

The present invention relates to a touch panel sensor, and more particularly, to a touch panel sensor having excellent reduction in manufacturing cost and sensitivity to physical contact.

The touch panel sensor generally adopts either a pressure reduction method or an electrostatic method. In the decompression method, the upper and lower electrodes are selectively contacted by a predetermined pressure to determine the contact position of the body. The electrostatic method measures the changing capacitance value of the resistance electrode by contacting or approaching the body, thereby contacting the body. I can figure out the location.

The touch panel sensors described above are provided on a display such as an organic light emitting diode (OLED), a liquid crystal display device (LCD), etc. capable of displaying an image, Correspondingly, the coordinates of the body in contact can be measured.

The touch panel sensor usually includes a lower sheet member including a lower transparent film positioned on the display and a lower transparent electrode formed on an upper surface of the lower transparent film, an upper transparent film provided on the lower sheet member, and a lower transparent film on the bottom of the upper transparent film. And an upper sheet member including an upper transparent electrode formed corresponding to the electrode, and an insulating member interposed between both sheet members.

However, when the upper transparent electrode and the lower transparent electrode are formed on separate transparent films, the manufacturing process is complicated and there is a limit in reducing the thickness of the touch panel sensor. In addition, the sensitivity of the touch panel sensor for detecting physical contact has a close relationship with the thickness of the touch panel sensor. Specifically, as the thickness of the touch panel sensor becomes thicker, the sensitivity of the touch panel sensor decreases.

In addition, in consideration of the light transmittance of the touch panel sensor, the upper and lower electrodes use a transparent electrode. However, the transparent electrode using ITO (Indium Tin Oxide) material has a larger resistance coefficient than the general metal although it is a conductive material. to be. Accordingly, the increase in the length of the transparent electrode as the area of the touch panel sensor is increased causes a sudden increase in the resistance of the transparent electrode, thereby increasing the loss of the touch signal, thereby reducing the signal sensing efficiency of the touch panel sensor.

The present invention provides a touch panel sensor that is simple in the manufacturing process and can be manufactured in a thin thickness while maintaining strength, thereby improving touch sensitivity.

The present invention provides a touch panel sensor that can be used alone without a conventional window film or can minimize the use of a window film or a protective film.

The present invention provides a touch panel sensor having a limited area.

According to an exemplary embodiment of the present invention for achieving the above object of the present invention, the touch panel sensor for detecting the contact of the body, the insulating substrate, a plurality of fine metal pattern formed parallel to each other on the upper surface of the insulating substrate A plurality of transparent electrode patterns formed on the bottom surface of the insulating substrate so as to intersect with the micro metal pattern, a glass substrate provided on an upper portion of the insulating substrate, and having a window decoration corresponding to an edge of the insulating substrate formed on one surface thereof; And an optical adhesive layer for bonding the insulating substrate and the glass substrate to each other.

Conventionally, the touch panel sensor provides a transparent electrode for each of the two transparent sheets, and can sense the contact and approach of the body by the interaction of both electrodes. In such a touch panel sensor, the width of the transparent electrode disposed below is provided to be larger than the width of the transparent electrode positioned above, in order to change the capacitance value due to the approach of the body. Since the resistance value is greatly increased, it is not easy to lengthen the length, thereby limiting the overall area of the touch panel sensor.

However, in the touch panel sensor according to the present invention, by using a metal provided on the upper electrode, it is possible to minimize the increase in resistance along the length, thereby increasing the area of the touch panel sensor relatively freely.

In more detail, in the case of the transparent electrode pattern formed on the bottom surface of the insulating substrate, it is preferable to maintain about several hundred Ω. Specifically, in the case of the transparent electrode using ITO or IZO, the horizontal and vertical directions of the transparent electrode In the case where the length increases, the resistance generally has a similar resistance value, and the resistance value increases as the length of the transparent electrode increases. Thus, when the transparent electrode is formed such that the width of the transparent electrode is about 300 μm or more, the transparent electrode may have a resistance value of about several hundred Ω, and the gap between the transparent electrode patterns may have a width of about 5 mm.

In addition, in the case of the micrometal pattern, the resistance value is also important, but as the material of the micrometal pattern, most metals such as aluminum, copper, nickel, chromium, titanium, gold, and silver may be used. However, since the metal itself is non-transmissive and most metals such as aluminum and chromium that make up the fine metal pattern have a bright and bright mirror effect, it is considered to be reflected by external light such as a fluorescent lamp or sunlight. Therefore, the width thereof may be formed to be approximately 30 μm or less, and when manufactured to 10 μm or less, it is hardly confirmed with the naked eye. For example, when the aluminum (Al) is used, the resistance value of the fine metal pattern is provided to have a thickness of 0.3 μm and a width of 10 μm. The resistance value of the 6 cm length is about 20 Ω. For reference, the specific resistance value of aluminum is 1 * 10 ^-7 Ωcm.

That is, when the resistance values of the transparent electrode pattern and the fine metal pattern are respectively provided to approximately the above-mentioned levels, the touch sensing signal of the touch panel sensor may not be canceled, but may be transmitted to an external controller through the flexible circuit board.

In addition, when the body approaches, the change in capacitance value may increase depending on the difference in width between the upper electrode and the lower electrode. Specifically, the larger the difference in width, the larger the change in capacitance value.

However, in the case where both the upper and lower electrodes are provided as transparent electrodes as in the related art, it is difficult to reduce the width of the upper electrode because reducing the width of the upper electrode brings about a large increase in the resistance value, which is when the body is touched. This means that the variation in capacitance value generated is small.

On the other hand, the lower electrode according to the present invention is provided as a transparent electrode, the upper electrode is provided as a metal to facilitate the adjustment of the width, it is possible to increase the difference between the width of the upper electrode and the lower electrode than before, It means that it is possible to increase the change of the capacitance value generated when the body is touched.

Therefore, by providing a lower electrode with a metal, it is possible to increase the change in capacitance value, which can realize the sensitivity of the touch panel sensor.

In addition, as described above, in the case of the micrometal pattern, since the increase in the resistance value according to the increase in length is inferior to that of the transparent electrode, it is possible to provide the micrometal pattern in the form of a curve or a zigzag rather than a straight line.

As described above, the same effect as adjusting the capacitance change value according to the width of the upper electrode and the lower electrode can be realized.

Specifically, the increase width of the capacitance value also varies depending on the area of the side surface of each electrode at the point where the upper electrode and the lower electrode cross each other.

Therefore, when the micrometal pattern is provided in a curved or zigzag form, the side surface area of the electrode is larger than that of the straight line shape, and thus the capacitance value can be increased, which in turn increases the sensitivity of the touch panel sensor. give.

However, if the fine metal pattern is excessively twisted to improve the touch sensitivity of the touch panel sensor, the sensitivity may be increased, but since the light transmittance of the touch panel sensor may be lowered, the arrangement interval between the fine metal patterns may be A. when called, to the area of a ² micro metallic pattern per occupied it is less than or equal to 2% of area a ^2, it is possible to maintain the transparency.

For reference, if the entire micrometal pattern is provided in a non-linear form, the length thereof may increase so much that the resistance value may increase even if the metal itself has a low resistivity. Accordingly, the micrometal pattern may be provided in a non-linear form only at a portion corresponding to the upper portion of the transparent electrode pattern formed on the bottom surface of the insulating substrate.

In addition, as described above, by providing the micro metal pattern and the transparent electrode pattern on both sides of one sheet of insulating substrate, respectively, it is possible to manufacture thinner than that provided in the two sheets of conventional insulating sheets, thereby improving the sensitivity and It can reduce the manufacturing cost and simplify the manufacturing process.

In addition, as described above, it is possible to prevent the visible phenomenon by adjusting the width of the micrometal pattern, otherwise the micrometal pattern itself is titanium-aluminum-copper alloy, titanium, copper / titanium (Cu / Ti), titanium It is formed of black metal which has its own dark color such as alloy, molybdenum (Mo), and black chromium (cromate) to prevent visible manifestation, or to provide fine metal pattern of silver with high conductivity, An absorbing layer may also be provided. Of course, the micrometal pattern may use various metals or alloys such as gold and aluminum in addition to silver.

In this case, the light absorption layer is also formed using a dark metal such as titanium / aluminum / copper alloy, titanium, titanium alloy, copper / titanium (Cu / Ti), black chromium (chromate), and molybdenum (Mo), or oxides The deposition layer and the metal layer may be laminated or formed using a low reflection coating.

Specifically, a black layer acting as a light absorption layer may be formed by using a laminate in which an oxide deposition layer and a metal layer are stacked. For example, when a chromium is coated on a second layer of chromium and chromated, Changes color

Alternatively, carbon may be further coated or an oxide deposition layer such as SiO ₂ , TiO ₂ , or Al ₂ O _{3 may be} multi-coated on a metal to reduce external light reflection by forming a structure to absorb external light.

In addition, in the touch screen panel of the present invention, the glass substrate provided on the insulating substrate may use tempered glass having excellent rigidity to prevent scratches caused by contact with the body. Also, a transparent and impact resistant polycarbonate or polypropylene may be used, and on the bottom thereof, a flexible circuit board electrically connected to the micrometal pattern and the transparent electrode pattern, and the patterns and the flexible circuit board may be used. By providing a window decoration that can be prevented from being exposed to the outside, such as the connecting line of the metal material to be connected, the cumbersome work of attaching the window film to the upper surface of the touch panel sensor can be omitted again. For reference, the window decoration may be formed on either the top surface or the bottom surface of the glass substrate, but may be formed on the bottom surface to prevent breakage due to physical contact or other physical contact during use.

The present invention provides a single metal substrate and a transparent electrode pattern on a single insulating substrate, the manufacturing process is simple, and can be manufactured in a thin thickness, thereby improving the touch sensitivity.

The present invention may provide a window decoration on the glass substrate provided on the insulating substrate, thereby eliminating the inconvenience of attaching a separate window film.

The present invention can provide a touch panel sensor having a small area limitation by using a fine metal pattern of a metal material having a smaller resistance value than the transparent electrode as an upper electrode.

The present invention can easily increase the width difference between the fine metal pattern and the transparent electrode pattern, it is possible to provide a touch panel processor that can easily widen the area while maintaining the sensitivity of the touch panel sensor.

According to the present invention, the micrometal pattern may be provided in a non-linear form, thereby easily increasing a change in capacitance values of the micrometal pattern and the transparent electrode pattern according to body contact, thereby improving the sensitivity of the touch panel sensor. .

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 quoting contents described in other drawings under such a rule, and the contents repeated or deemed apparent to those skilled in the art may be omitted.

The touch panel sensor of the present invention is provided on an upper display such as an organic light emitting display device or a liquid crystal display device capable of displaying an image, and can measure coordinates of a body to be in contact with an image provided by the display.

Example 1

1 is an exploded perspective view of a touch panel sensor according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of the touch panel sensor according to the first embodiment of the present invention.

1 and 2, the touch panel sensor 100 includes an insulating substrate 110, a fine metal pattern 112, a transparent electrode pattern 114, a glass substrate 120, an optical adhesive layer 130, and a protection layer. Layer 140.

The insulating substrate 110 is formed using a material such as plastic or glass such as polycarbonate, polyethylene, polypropylene, acrylic, polyethylene terephthalate (PET), etc. Can be.

A plurality of fine metal patterns 112 are formed on the upper surface of the insulating substrate 110 as described above, and a plurality of transparent electrode patterns are formed on the bottom surface of the insulating substrate 110 so as to cross each other so as to cross the micro metal pattern 112. 114 is formed.

The fine metal pattern 112 and the transparent electrode pattern 114 are vertically intersected, and in this embodiment, both patterns 112 and 114 are provided to vertically intersect, but the fine metal pattern 112 and the transparent electrode pattern are vertically intersected. Since crossing 114 is for inducing a change in the capacitance value at the point where both patterns 112 and 114 intersect by the contact of the body, the crossing angle can be flexibly adjusted.

In order to induce a change in capacitance value at the intersection of the micrometallic pattern 112 and the transparent electrode pattern 114, the width of the micrometallic pattern 112 should be narrower than the width of the transparent electrode pattern 114.

Here, in the related art, when the length of a relatively narrow upper electrode is increased by using both transparent electrodes, the resistance value is greatly increased, and the area of the overall touch panel sensor is limited, but the touch panel sensor according to the present invention ( In 100, the electrode provided on the insulating substrate 110 is provided by using a metal material, thereby minimizing the increase in resistance along the length, and thus, the area of the touch panel sensor 100 can be increased relatively freely.

However, since the metal is an opaque material, the micro metal pattern 112 may be visualized when the display emits light from the back side, but the touch panel sensor 100 of the present invention controls the width of the micro metal pattern 112 to make it visible. Can be prevented. Specifically, the width is formed to be greater than 0 and less than 30 μm to prevent the visible.

In addition, as described above, the micrometal pattern 112 and the transparent electrode pattern 114 are provided on both sides of one sheet of insulating substrate 110, respectively, so that manufacturing can be made thinner than that provided in two sheets of conventional insulating sheets. This can improve the sensitivity, reduce the manufacturing cost, and simplify the manufacturing process.

On the other hand, when the transparent electrode pattern 114 is formed on the other surface of the insulating substrate 110 in a state where the micro metal pattern 112 is formed on one surface of the insulating substrate 110, for protecting the fine metal pattern 112 After the protective film is formed, the transparent electrode pattern 114 may be formed, the protective film may be removed, and when the transparent electrode pattern is first formed and the fine metal pattern is formed, the transparent electrode pattern may be reversed as described above. After the transparent electrode pattern is covered using the protective film, the fine metal pattern may be provided.

For reference, the transparent electrode pattern 114 or the fine metal pattern 112 may be formed using a well-known method such as various methods such as photolithography or silk screen using a photosensitive film, and details are already known. See description.

In some cases, the insulating substrate may include a transparent electrode layer and a fine metal pattern using ITO or IZO, ANT (Carbon Nano Tube), PEDOT (polymer conductive transparent electrode), etc., for the transparent electrode pattern on one side and the other side of the insulating substrate, respectively. It is provided in a state in which a fine metal layer for a fine metal pattern using aluminum or titanium is formed, and both layers may be provided after forming a desired pattern through patterning.

As a method of coating a metal for the micrometal layer on the insulating substrate, a thin metal is coated by a method such as conventional thermal evaporation, E-Beam evaporation, sputtering, chemical vapor deposition (CVD), or the like. There is a way. In this case, in order to form the micrometal pattern in the coated state, the micrometal pattern may be formed using a method similar to a semiconductor etching process using a photosensitive agent coating and ultraviolet exposure through a mask.

On the other hand, to increase the conductivity of the fine metal pattern 112, there is a method of selecting a metal having a smaller resistance value and a method of increasing the thickness of the metal.

Metals with good conductivity include aluminum, copper, gold, and silver.

However, the above-described thin film metal coating method, that is, thermal deposition, electron beam deposition, sputtering, chemical vapor deposition, etc. may have a limit in increasing the thickness of the metal.

In general, the thin metal coating method does not raise more than 0.1 ~ 0.5㎛. Increasing this value may increase the deposition time or may cause problems in the coating of the vacuum metal thin film due to stress.

Therefore, if it is necessary to increase the conductivity of the micrometal pattern, the micrometal pattern may be formed and then further plated on the micrometal thin film through electrolytic or electroless plating in a conventional manner.

Electrolytic plating is a method of plating by applying electricity, also referred to as electroplating, electroless plating is a method for chemically plating additional metal on the metal without applying electricity can be used differently depending on the application.

For example, a thin metal coating of copper may be used to form a fine metal pattern, and then the copper may be further secondaryly electroplated.

In the case of copper, the plating is easily plated up to several tens of micrometers, so that the thickness can be easily increased, and thus the electrical resistance is easily lowered.

Meanwhile, as described above, black treatment may be performed using a plating layer which is plated and laminated on the fine metal pattern again, and black plating may be performed through black nickel plating, black chrome plating, or the like in nickel plating or chromium plating. . Therefore, the external light reflection can be reduced by finally forming the black plating layer on the fine metal pattern.

The above-described laminate including the insulating substrate, the micro metal layer, and the transparent electrode layer is cut into an appropriate size by cutting the laminate formed with the transparent electrode layer and the micro metal layer formed on one side and the other side of the insulating disc and a plurality of insulating substrates integrally connected. Both layers may be patterned before cutting to form a desired transparent electrode pattern and a micrometal pattern. In this case, an additional light absorption layer may be further formed on the micrometal layer, and may be patterned together in the patterning process of the micrometal layer.

In addition, the fine metal pattern and the transparent electrode through a work method such as gravure printing, silver paste printing, inkjet printing using a conductive ink on a pre-processing insulating disc that can be cut to produce a plurality of insulating substrates It is also possible to form a pattern and later use it by cutting to the size of an insulating substrate having a desired area.

In particular, when forming a fine metal pattern by printing can be usefully applied when the following touch screen panel is large.

Specifically, when the size of the touch screen panel is larger than 30 inches, since the screen is not viewed closely, even if the fine pattern is several tens of micrometers or more, there is generally no problem in viewing the display. Therefore, it is possible to form a metal pattern by printing.

In particular, the metal pattern by printing uses an electrically conductive metal, and as the metal, ink of various metal materials such as silver ink, nano silver ink, and carbon ink may be used.

In particular, gravure printing or inkjet printing is possible to print 30㎛, it is possible to form a fine metal pattern by printing, and because of the printing method, it is also possible to manufacture a large size of 30 inches or more.

In this case, as described above, in order to increase the electrical conductivity, an electrical resistance may be reduced by forming a plating layer such as copper on a metal pattern printed using electrolytic or electroless plating.

The advantages of forming a micrometal pattern by printing are that it forms a micrometal pattern immediately when printing and that a large size can be formed.

Meanwhile, as described above, the visible phenomenon may be prevented by adjusting the width of the fine metal pattern 112. In the present embodiment, the fine metal pattern 112 may be made of titanium / aluminum / copper alloy, titanium, titanium alloy, Formed from a dark metal using at least one of aluminum, aluminum alloy, aluminum / chrome laminate, aluminum / chrome laminate, copper / titanium (Cu / Ti), black chrome mate, and molybdenum (Mo), Can be prevented.

In addition, in some cases, after providing the fine metal pattern with silver having excellent conductivity, the light absorbing layer may be provided again on the upper surface. For reference, the dark chromate may be provided by a plating method using a solution in which chromic acid, sodium sulfate, and silver nitrate are mixed.

In addition, the glass substrate 120 may be disposed on the insulating substrate 110 to protect the fine metal pattern 112 exposed to the upper surface of the insulating substrate 110.

The glass substrate 120 provided on the insulating substrate 110 may improve durability of the touch panel sensor 100 by using tempered glass having excellent rigidity so as to prevent scratches caused by contact with the body. have. In addition, a bottom surface thereof includes a flexible circuit board 160 electrically connected to the fine metal pattern 112 and the transparent electrode pattern 114 and a metal material connecting the patterns 112 and 114 to the flexible circuit board 160. By providing the window decoration 122 that can prevent the connection line 102, 104 and the like of the outside to be exposed, the cumbersome work of attaching the window film on the upper surface of the touch panel sensor can be omitted again.

As described above, the flexible circuit board 160 is provided to transmit the body's contact signal generated by the interaction between the micrometal pattern 112 and the transparent electrode pattern 114 to the outside.

The flexible circuit board 160 is connected to the insulating substrate 110 adjacent to the end of the transparent electrode pattern 114. Specifically, as shown in FIG. 2, the micrometal pattern 112 provided on the upper surface of the insulating substrate 110 is electrically connected to the flexible circuit board 160 by the first connection line 102 provided as a metal. In addition, the transparent electrode pattern 114 is also electrically connected to the flexible circuit board 160 by the second connection line 104 which is similarly provided of metal.

However, since the flexible circuit board 160 is connected to the insulating substrate 110 adjacent to the end of the transparent electrode pattern 114, the flexible circuit board 160 connects the flexible circuit board 160 adjacent to the end of the fine metal pattern 112. In comparison with the case, the area of the insulating substrate 110 for arranging the connection lines 102 and 104 can be reduced.

On the other hand, since the first and second connection lines 102 and 104 are provided on different surfaces of the insulating substrate 110, the circuit terminals 164 of the flexible printed circuit board 160 also have upper and lower surfaces of the flexible printed circuit board 160. Divided into In detail, the flexible printed circuit board 160 forms cutouts 162 on both sides of the cutout portion 162 based on the cutout portion parallel to the direction connected to the insulating substrate 110. The upper and lower surfaces of the insulating substrate 110 are in close contact with each other. Accordingly, the circuit terminal 164 formed at the left cutout 162 is connected to the first connection line 102 electrically connected to the fine metal pattern 112, and the circuit terminal 164 formed at the right cutout 162 is The second connection line 104 is electrically connected to the transparent electrode pattern 114.

In addition, an optical adhesive film or an OCA (Optically Clear Adhesive) film may be used as the optical adhesive layer 130 for bonding the insulating substrate 110 and the glass substrate 120 to each other, and the insulating substrate and the glass substrate may be formed by the OCA film. Can be attached optically as well. At this time, the OCA film is formed of acrylic material having low moisture absorption rate and excellent heat resistance in order to prevent foaming or peeling phenomenon due to moisture absorption and to prevent the drop or warpage of optical characteristics of the touch panel sensor due to thermal expansion. Can be.

In addition, in the case of the transparent electrode pattern 114 provided below the insulating substrate 110, since ITO may be oxidized, a protective layer 140 may be further provided to protect the transparent electrode pattern 114. 140 is an ITO electrode using a UV curable resin or other synthetic resin, a method of attaching a separate film, coating a transparent organic material by spraying, inkjet printing, silk printing, or the like, or vacuum coating an oxide metal thin film. Protective coating on is also possible. The protective layer may be provided under the insulating substrate 110 by the above method to protect the transparent electrode pattern 114.

In addition, in the structure using a single transparent substrate as the insulating substrate 110, the first connection line 102 and the second connection line 104 electrically connected to the micrometal pattern 112 and the transparent electrode pattern 114, respectively, at the same time There is an advantage that can be formed.

The connecting lines 102 and 104 may be manufactured by silk printing using silver ink or an etching method of depositing additional metal and forming a pattern thereof. Alternatively, a thin film coating may be performed using a metal having a pattern formed thereon using a substrate having a hole in which a pattern is formed in advance using a metal mask as a mask.

However, the above-described method has a problem in that the work must be performed in duplicate in order to provide a conductive connection line to a pattern such as a micrometal pattern or a transparent electrode pattern that serves as a sensor electrode.

However, according to the present invention, when the transparent electrode pattern is formed on one surface and the micro metal electrode is formed on the other surface, there is an advantage in that the connection line can be formed together when forming the micro metal electrode. That is, since the metal itself has good conductivity, the metal itself may be used as a connection line, thereby forming the fine metal pattern 112 and the connection line 102 at the same time.

In addition, since the micrometal pattern has a low conductivity compared to metal, it is difficult to use it as a signal connection line, and thus a connection line should be formed by using metal instead of ITO or IZO of a transparent material.

However, in the present invention, when forming the fine metal pattern together to form a connection line, there is no additional process occurs, thereby reducing the cost.

Example 2

3 is a cross-sectional view of a touch panel sensor according to a second embodiment of the present invention.

Components of the touch panel sensor according to the present exemplary embodiment are substantially the same as the touch panel sensor described with reference to FIGS. 1 and 2, and thus, in the present exemplary embodiment, the light absorbing layer disposed on the micrometal pattern is different from the previous exemplary embodiment. For the description of the other components of the touch panel sensor, reference may be made to the description and drawings of the touch panel sensor of the above embodiment, and repeated descriptions thereof will be omitted.

Referring to FIG. 3, the touch panel sensor 200 includes an insulating substrate 210, a fine metal pattern 212, a transparent electrode pattern 214, a glass substrate 220, an optical adhesive layer 230, and a protective layer 240. The light absorption layer 250 is provided on the micrometal pattern 212 formed on the upper surface of the insulating substrate 210 to prevent the micrometal pattern 212 from being visible.

The light absorption layer 250 is formed by sequentially stacking a metal layer for the micrometal pattern 212 and a metal layer for the light absorption layer 250 on the insulating substrate 210, and then patterning the two metal layers at once. 212) The light absorption layer 250 may be formed on the upper surface.

For reference, in the case of forming the light absorption layer 250 and the fine metal pattern 212, when the transparent electrode pattern 214 is first formed on the bottom surface of the insulating substrate 210, the transparent electrode pattern 214 is formed. After forming a protective film on the transparent electrode pattern 214 using a synthetic resin for protection, after forming the light absorption layer 250 and the fine metal pattern 212, the protective film can be removed.

Since the light absorbing layer 250 is formed on the upper surface of the fine metal pattern 212, it is possible to prevent the light absorbing layer 250 from being visible from the outside during light emission of the display positioned below the touch panel sensor. / Titanium (Cu / Ti), molybdenum (Mo), black chromium mate may be used, or an oxide deposition layer and a metal layer may be laminated or formed using a low reflection coating.

Hereinafter, an insulating substrate material for manufacturing the touch panel sensor according to the first and second embodiments described above will be described.

As described above in the first and second embodiments, the plurality of micrometal patterns and the plurality of transparent electrode patterns formed to be parallel to each other and formed to be parallel to each other are formed on both surfaces of the insulating substrate. The insulating substrate material applicable to the touch panel sensor may be provided by including an insulating disc, a transparent electrode layer for a transparent electrode pattern on one side of the insulating disc, and a micrometal layer for a fine metal pattern on the other side of the insulating disc. have.

4, an insulating substrate material for manufacturing a touch panel sensor according to the present invention is shown.

The insulating substrate material 300 includes an insulating disc 310, a transparent electrode layer 320, and a fine metal layer 330.

The insulating disc 310 may be made of synthetic resin or glass, and the transparent electrode layer 320 is formed on one surface of the insulating disc 310, and the fine metal layer 330 is formed on the other side of the insulating disc 310.

The transparent electrode layer 320 may form a transparent electrode pattern through a patterning process, and likewise, the micrometal layer 330 may form a fine metal pattern through a patterning process.

On the other hand, the insulating disc 310 shown in Figure 6 is provided with a synthetic resin, the above-described insulating substrate material 300 is rolled on the roller, in the roller 305 for the patterning of the fine metal pattern or transparent electrode pattern The insulating substrate material 300 may be provided in a state in which protective films 340 for protecting the surfaces of the fine metal layer 330 and the transparent electrode layer 320 are stacked. The protective films 340 may be removed before the patterning process.

As described above, after the protective film 340 is removed and the insulating substrate material 300 is patterned, and the fine metal layer 330 and the transparent electrode layer 320 are patterned, the substrate is cut into a desired size for the touch panel sensor. It can be used as an insulating substrate material.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

1 is an exploded perspective view of a touch panel sensor according to a first embodiment of the present invention.

2 is a cross-sectional view of a touch panel sensor according to a first embodiment of the present invention.

3 is a cross-sectional view of a touch panel sensor according to a second embodiment of the present invention.

4 is a perspective view of an insulating substrate material for manufacturing a touch panel sensor according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: touch panel sensor 110: insulating board

112: fine metal pattern 114: transparent electrode pattern

120: Glass substrate 122: Window decoration

130: optical adhesive layer 140: protective layer

150: light absorption layer 160: flexible circuit board

162: Incision 164: Circuit terminal

Claims (18)

In the touch panel sensor for detecting the contact of the body, Insulating substrate; A plurality of micrometal patterns formed on the upper surface of the insulating substrate to be parallel to each other; A plurality of transparent electrode patterns formed on the bottom surface of the insulating substrate so as to intersect with the micrometal pattern, and having a width greater than that of the micrometal pattern; A glass substrate provided on an upper portion of the insulating substrate and having a window decoration corresponding to an edge of the insulating substrate on one surface thereof; And An optical adhesive layer bonding the insulating substrate and the glass substrate to each other; And the micrometal pattern is formed to a width of less than 0 μm and less than 30 μm. The method of claim 1, The bottom surface of the insulating substrate is a touch panel sensor, characterized in that a protective layer covering the transparent electrode pattern is provided. The method of claim 1, Touch panel sensor, characterized in that the light absorption layer is formed on the upper surface of the fine metal pattern. The method of claim 3, The light absorption layer is formed using at least one of titanium / aluminum / copper alloy, titanium, titanium alloy, copper / titanium (Cu / Ti), black chromate, and molybdenum (Mo), Touch panel sensor, characterized in that the oxide deposition layer and the metal layer is laminated or formed using a low reflection coating. 5. The method of claim 4, The light absorbing layer is a touch panel sensor, characterized in that formed on the fine metal pattern using an electrolytic or electroless plating method. The method of claim 1, The micrometal pattern may include titanium / aluminum / copper alloy, titanium, titanium alloy, aluminum, aluminum alloy, aluminum / chromium laminate, aluminum / chromium laminate, copper / titanium (Cu / Ti), black chrome mate, and molybdenum ( Touch panel sensor, characterized in that formed of a dark metal using at least one of Mo). The method of claim 1, Further comprising a flexible circuit board for transmitting a contact signal of the body generated by the interaction of the micrometal pattern and the transparent electrode pattern to the outside, The flexible circuit board is connected to the insulating substrate adjacent to the end of the transparent electrode pattern, the touch panel sensor. The method of claim 7, wherein The flexible circuit board is cut parallel to a direction connected to the insulating substrate to form both cutouts on the basis of the cutout portion, Each of the cutouts is in close contact with an upper surface and a bottom surface of the insulating substrate. delete delete The method of claim 1, The insulating substrate is a touch panel sensor comprising any one of polyethylene terephthalate (polyethyleneterephthalate) or glass. delete delete According to any one of claims 1 to 8 and 11, a plurality of micro-metal pattern formed in parallel with each other on both sides of the insulating substrate and a plurality of transparent to cross and parallel to the micro-metal pattern In the insulating substrate material for manufacturing a touch panel sensor having an electrode pattern, Insulating disc; A transparent electrode layer for the transparent electrode pattern on one surface of the insulating disc; And And a micrometal layer for the micrometal pattern on the other surface of the insulating disc. The method of claim 14, The insulating disc is an insulating substrate material, characterized in that provided using a synthetic resin or glass material. The method of claim 14, The insulating substrate material is provided in a rolled state on the roller, the insulating substrate material, characterized in that provided while gradually withdrawing from the roller for the patterning of the fine metal pattern and the transparent electrode pattern. The method of claim 14, The insulating substrate material is an insulating substrate material, characterized in that the protective film for protecting the surface of the fine metal layer and the transparent electrode layer is provided in a laminated state, respectively. The method of claim 14, A connection line electrically connecting the micrometal pattern and the transparent electrode pattern to an external flexible circuit board, respectively; Insulation substrate material, characterized in that the connecting line is formed with the fine metal pattern.

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