KR101128669B1 - Touch panel sensor including low resistant line pattern - Google Patents

Abstract

The touch panel sensor which is placed on the display and senses a contact position of the object may include a transparent insulating substrate, a first electrode pattern formed side by side with a transparent conductive material on one surface of the transparent insulating substrate, and on the same surface on the transparent insulating substrate. Low resistance lines which are formed in parallel to intersect the first electrode pattern, are electrically separated from the first electrode pattern, and electrically connect the plurality of transparent connecting portions provided apart from the first electrode pattern and the entire series of the plurality of transparent connecting portions. It includes a second electrode pattern comprising a. The touch panel sensor may detect a change in capacitance according to the approach of the object by using a part of the stacked first electrode pattern, a low resistance line, and an electrode pattern around the touch panel sensor, and sense the touch position of the object by using the touch panel sensor. Can be detected.

Description

TOUCH PANEL SENSOR INCLUDING LOW RESISTANT LINE PATTERN}

The present invention relates to a touch panel sensor, and more particularly, to a touch panel sensor capable of detecting a contact position of an object using a change in capacitance.

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

Referring to FIG. 1, the conventional touch panel sensor 1 is bonded to the lower insulating sheet 10 and the upper insulating sheet 20 at predetermined intervals. 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 the lower ITO electrode 30 is the lower insulating sheet. The upper ITO electrode 40 is oriented in the horizontal direction on the upper surface of 10, and the upper ITO electrode 40 is oriented in the vertical direction on the bottom surface of the upper insulating sheet 20.

The touch panel sensor 1 has a predetermined capacitance, that is, a basic capacitance value, corresponding to the area of each intersection at each intersection of the lower ITO electrode 10 and the upper ITO electrode 20 arranged to cross each other. If the body part is close, the area of the body part is added to the area of the upper ITO electrode 20 disposed thereon, so that the capacitance value at the touch point may be changed.

In this case, the upper ITO electrode 20 whose width is relatively narrower than that of the lower ITO electrode 30 may be used as a drive line to which an electric current is intermittently provided, and the lower ITO electrode 30 may be an upper ITO electrode. When the current is supplied to the electrode 20, the difference between the output signal, that is, the current value, generated by the change in the capacitance value of the lower ITO electrode 30 and the upper ITO electrode 20, which is changed by the presence or absence of a part of the body. It can be used as a sensing line to measure.

As described above, in response to an input signal such as an electric current intermittently transmitted over the display, a method of detecting a contact position of a part of a body by detecting a change in an output signal that is changed is a mutual method. Alternatively, it is referred to as a mutual capacitance touch sensing method.

On the other hand, since the width of the lower ITO electrode 20 is relatively wide compared with the upper ITO electrode 40, even if the length is slightly longer, the input signal or the output signal that is transmitted intermittently is sufficiently transferred to the external controller. It can be adjusted to have a resistance value that can be delivered. Here, the controller inputs an input signal to either the lower ITO electrode 20 or the upper ITO electrode 40, and detects a contact position of a part of the body by using an output signal output to the other ITO electrode.

However, since the upper ITO electrode 40 is formed to be narrower than the lower ITO electrode 20, as the length of the upper ITO electrode 40 increases, a sudden increase in resistance may occur. As a result, it is difficult to lengthen the upper ITO electrode 40, which may limit the total area of the touch panel sensor 1.

Specifically, since the resistance value is inversely proportional to the area and proportional to the length, in general, in the case of an electrode using ITO or IZO having a large sheet resistance, the width length of the electrode and the length corresponding to the extension direction of the electrode are the same. Increasing will result in similar resistance values. That is, when the resistance value is the same width, the resistance value may increase as the length increases.

In consideration of this point, the conventional touch panel sensor provides a width of the lower ITO electrode 20 to about 5 mm and a width of the upper ITO electrode 40 to be about 300 μm. It is applied to a display having a screen size of a few inches (inch) used in a general portable terminal, wherein the upper ITO electrode 40 has a resistance value of several hundred Ω.

On the other hand, the thickness of the upper ITO electrode can be increased to lower the resistance of the ITO, but in this case there is a problem that the transmittance is lowered. On the contrary, when the width of the upper ITO electrode is manufactured to be 300 μm or less as described above, the resistance value according to the increase in length increases, thereby causing a problem that the sensitivity due to finger contact is reduced or the size of the display is difficult to increase.

In addition, widening the width of the upper ITO electrode 40 in order to reduce the resistance value increases the basic capacitance value generated by interacting with the lower ITO electrode 20, so that even if there is a touch by a finger or a touch pen, There is also a problem that the degree of change in capacitance is relatively small, and as a result, the touch sensitivity may decrease.

That is, when the upper and lower conventional ITO electrode is formed, there is a limitation that the width of the upper ITO electrode cannot be wider than the existing design, and there is a problem that a problem occurs even when it is narrowed.

The present invention solves the problem of the conventional ITO electrode in which the resistance rapidly rises as the length increases, thereby providing a touch panel sensor that can be easily increased in length and applied to a large area display.

The present invention provides a touch panel sensor which can form two patterns crossing each other on one substrate or film together, and which can improve the sensitivity while being thinner than a conventional sensor.

The present invention provides a touch panel sensor that can improve the conductivity of the ITO electrode by using a low resistance line made of metal or the like even when using the ITO electrode.

According to an exemplary embodiment of the present invention, a touch panel sensor placed on a display and sensing a contact position of an object is formed of a transparent conductive material on one surface of a transparent insulating substrate and a transparent insulating substrate, and is provided side by side. A plurality of transparent connections and a series of patterns, which are formed side by side to cross the first electrode pattern on the same surface on the transparent insulating substrate, electrically separated from the first electrode pattern, spaced apart from the first electrode pattern, and formed of a transparent conductive material. And a second electrode pattern including low resistance lines formed on the plurality of transparent connection portions of the plurality of transparent connection portions. The touch panel sensor may detect a change in capacitance according to the approach of the object by using a part of the stacked first electrode pattern, a low resistance line, and an electrode pattern around the touch panel sensor, and sense the touch position of the object by using the touch panel sensor. Can be detected. In addition, the low resistance line can reduce the overall resistance of the second electrode pattern.

As used herein, the "object" is a means for determining a contact position, and may include a stylus pen which may be generally applied to a body part such as a finger or a capacitive touch screen. In addition, it may be applied to a capacitive touch screen and may include other structures for specifying a contact location.

As used herein, the term “transparent insulating substrate” refers to a transparent or nearly transparent film, substrate, or other plate structure. The material may include a synthetic resin film or glass substrate such as PET, PC, or PE, and other substantially transparent and bent. The load may be provided as a flexible substrate.

In the present specification, the low resistance line is formed to electrically connect the entire plurality of transparent connections, wherein the low resistance line may be formed in the form of conductor lines connected to one, but arranged or discontinuously separated on the transparent connection. It may be distributed to connect the plurality of transparent connections as a whole.

The first electrode pattern and the second electrode pattern may be formed on the same surface with respect to the transparent insulating substrate, and the first and second electrode patterns may be formed on the surface facing the display or opposite the display on the transparent insulating substrate. . For example, when the transparent insulating substrate is a tempered glass substrate, the electrode patterns may be formed on the bottom surface of the substrate, and when the transparent insulating substrate is separately provided under the glass substrate, the electrode patterns may be formed on the upper surface of the substrate.

The first electrode pattern may be formed of a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), carbon nanotube (CNT), or ultrathin metal pattern (<100Å), and may be parallel to each other in a horizontal or vertical direction. Can be arranged. Preferably, it may include a series of extensions and bridges, but may also be provided in a lane shape having the same width.

When the width change of the first electrode pattern is formed using the extension part and the bridge part, the extension part may be formed in various shapes such as a square, a rhombus, and a circle, and may be formed in a relatively wider width than the bridge part. If the object is not approached, the basic capacitance is determined by the size and material of the intersection of the bridge and the low resistance line.However, when an object such as a finger approaches, the change in capacitance between both bridges is also affected by the surrounding extension. I can receive it. Bridge portion may be formed in a width of about 100 ~ 300㎛.

The second electrode pattern is formed in a direction crossing the first electrode pattern. Preferably, they may cross vertically, but in some cases they may cross at an angle other than vertical. The second electrode pattern may include a low resistance line crossing the bridge portion, and may also include a transparent connection portion electrically connected by the low resistance line. The transparent connection part may be formed in a region electrically and physically separated from the transparent conductive pattern forming the first electrode pattern, and may be connected in a series of orders by a low resistance line.

Since the capacitance may be affected by the extension portions other than the intersection points in the first and second electrode patterns, the second electrode pattern may be formed above or below the first electrode pattern. In addition, since the gap between the bridge portion and the low resistance line is maintained by the insulating layer or the insulation pattern having a thickness of about 0.1 to 1.0 μm, instead of the adhesive film (OCA) of about 200 μm or more, the bridge portion crossing the low resistance line is expanded. It may be desirable to have a width significantly smaller than that of the portion.

On the contrary, since the low resistance line is formed to have a width of about 30 μm or less, preferably 10 μm or less, the low resistance line may be formed to a thickness that is difficult to visually identify, and may be formed of an opaque metal material itself. Therefore, it can be provided with a significantly lower resistance value than when using a conventional transparent electrode. In addition, since the low resistance by the low resistance line can be achieved by adjusting the thickness of the low resistance line, the low resistance can be sufficiently achieved by increasing the thickness of the low resistance line without compromising the transparency of the touch panel sensor. For reference, the low resistance line may use various metals such as gold, silver, aluminum, nickel, titanium, or an alloy using the above-described metals.

The touch panel sensor of the present invention uses a low resistance line as an electrode for recognizing contact of a part of the body, thereby minimizing a decrease in sensitivity due to a loss of a signal generated from the electrode, and is disposed on the transparent electrode. Appropriately adjusting the width of the metal electrode can also be prevented from being visible from the outside.

The touch panel sensor of the present invention can improve sensitivity even though it is thinner than a conventional sensor by forming two patterns crossing each other on one substrate or film together.

1 is a perspective view illustrating a conventional mutual touch panel sensor.
2 is a plan view illustrating a touch panel sensor according to an exemplary embodiment of the present invention.
3 to 5 are partially enlarged perspective views illustrating a manufacturing process of the touch panel sensor of FIG. 2.
FIG. 6 is a cross-sectional view illustrating a stacked structure of the touch panel sensor of FIG. 2.
7 is a plan view illustrating a touch panel sensor according to an exemplary embodiment of the present invention.
8 is a plan view illustrating a touch panel sensor according to an exemplary embodiment of the present invention.
9 is a partially enlarged perspective view illustrating a touch panel sensor according to an exemplary embodiment of the present invention.
10 is a partially enlarged perspective view illustrating a touch panel sensor according to an embodiment of the present invention.

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.

2 is a plan view illustrating a touch panel sensor according to an exemplary embodiment of the present invention, and FIGS. 3 to 5 are partially enlarged perspective views illustrating a manufacturing process of the touch panel sensor of FIG. 2.

2 and 5, the touch panel sensor 100 according to the present embodiment includes a transparent substrate 110, a first electrode pattern 120 and a second electrode pattern 130 formed on the transparent substrate 110. And an insulating pattern 140 interposed between the first electrode pattern 120 and the second electrode pattern 130.

The transparent substrate 110 may be formed of a synthetic resin film such as PET, PC, or PE, or a glass substrate. Although the transparent substrate 110 may be separately mounted on a display such as an LCD or an organic LED, the transparent substrate 110 may be used in a transparent substrate or a film constituting a module of the LCD or the organic LED and may be integrally provided with the display module. Here, the transparency of the transparent substrate 110 will also include the case of including a slight opacity as long as it does not impair readability suitable for the use of the display to be applied.

In addition, the first electrode pattern 120 and the second electrode pattern 130 may be formed on one surface of the top surface or the bottom surface of the transparent substrate 110. For example, when provided as a synthetic resin film, the positive electrode pattern is generally formed on the upper surface of the transparent substrate 110, but when provided as a glass substrate, the positive electrode pattern may be formed directly on the bottom of the transparent substrate 110 have.

The first electrode pattern 120 may be formed using a transparent conductive material such as ITO, IZO, carbon nanotubes (CNT), and a series of line patterns arranged side by side in a horizontal or vertical direction on the transparent substrate 110. Provided by In detail, the line pattern for the first electrode pattern 120 includes an extension part 122 and a bridge part 124 provided in a line along one direction. The expansion part 122 and the bridge part 124 are alternately formed and arranged in a row, and may be formed of the same or different transparent conductive materials.

The extension part 122 is formed to be relatively or significantly wider than the bridge part 124, and the bridge part 124 is formed between the extension parts 122 to electrically connect the series of extension parts 122. There is a number. For example, in a mobile terminal having a display and a touch area of about 3.0 inches, when the bridge portion 124 is formed to have a width of about 0.1 mm to 0.2 mm, the extension portion 122 may be formed to have a width of about 4 to 6 mm. In this case, the expansion unit 122 may have a width about 20 to 60 times larger than that of the bridge unit 124.

The shape of the extension portion 122 and the bridge portion 124, as shown, may be formed of a continuous quadrangular motif, the shape may be a variety of motifs such as rhombus, circle or oval. In addition, as will be described later, the extension part 122 and the bridge part 124 may be formed on the same material and the same surface together with the transparent connection part 136 for the second electrode pattern 130 and spaced apart from each other with a minimum width. The shapes may be chosen to be in harmony as possible. Electromagnetic waves (EMI) may be emitted from a terminal having a display disposed at the bottom of the touch panel sensor 100. Thus, the transparent connection 136 of the first electrode pattern 120 and the second electrode pattern 130 may be emitted. By designing the pattern to be spaced apart to the minimum width by, it can perform the function of shielding or blocking the electromagnetic waves as much as possible.

The second electrode pattern 130 is formed to form a stacked structure with the first electrode pattern 120. The second electrode pattern 130 may be formed above or below the first electrode pattern 120, and is formed to be electrically separated from the first electrode pattern 120. To this end, an insulating layer or an insulating pattern 140 may be formed between the first electrode pattern 120 and the second electrode pattern 130.

The insulating layer or the insulating pattern 140 may be formed using a material such as SiO ₂ , Si ₃ N _4, or TiO ₂ which generally forms an insulating thin film, and may be formed by other deposition, sputtering, coating, spraying, laminating, adhesion, It can be formed using an insulating material that can be printed or the like. In addition, as shown, may be provided in a pattern form through a patterning process after deposition or sputtering, in some cases may be provided as a single insulating layer without a patterning process or through a process of printing a pattern directly. have. As shown in FIG. 4, after the extension part 122, the bridge part 124, and the transparent connection part 136 are formed in a pattern, the insulating pattern 140 may be formed through another patterning process.

The second electrode pattern 130 includes a low resistance line 134 and a transparent connector 136. As illustrated in FIG. 3, the transparent connector 136 may be formed at the same time as the first electrode pattern 120. The transparent connection part 136 may also be formed of a transparent conductive material having a width of about 0.1 mm to 0.2 mm. After the ITO layer formed on the transparent substrate 110 is etched by a photolithography process, the expansion part 122 and the bridge part ( 124 can be formed together.

As shown in FIG. 5, the low resistance line 134 is formed on the insulating pattern 140 and is formed to electrically connect the entire transparent connection part 136 while passing through the surfaces of the plurality of transparent connection parts 136. . It may be formed using a metal material such as gold, silver, aluminum or chromium, may be formed through a patterning process after deposition or sputtering, or may be simply formed through a process such as inkjet printing. The low resistance line 134 may not be transparent and may optically block the display, but may be formed to have a width of about 30 μm or less so that it is not visible to the naked eye, and more preferably, about 10 μm or less or several μm wide. It may be formed so that in no case can it be identified with the naked eye.

In addition, the low resistance line 134 may be formed in a straight shape, but may be alternatively formed in a curved or bent shape, and the changing pattern may be regularly or irregularly changed. In the case of irregularly changing curves or bends, it may be possible to prevent them from becoming more visible from the outside.

The low resistance line 134 may be formed together with the wire pattern 150 of the bezel portion for connection with an external device. The wire pattern 150 of the bezel portion is formed to be concentrated on one side of the transparent substrate 110 to be connected to the FPCB or the like. Since the general wire pattern 150 is also formed of a metal material, the wire pattern 150 may be formed at the same time as the low resistance line 134. In this case, the low resistance line 134 may be simultaneously formed with the wire pattern 150 to form the touch panel sensor 100. ) Can significantly reduce the number of processes.

FIG. 6 is a cross-sectional view illustrating a stacked structure of the touch panel sensor of FIG. 2.

Referring to FIG. 6, the low resistance line 134 formed of a material that blocks or reflects light such as metal is formed on the transparent transparent substrate 110, the bridge part 124, and the insulating pattern 140.

For reference, since a transparent conductive material such as ITO has a sheet resistance of about 250 Ω / square, if a pattern is formed with a width of about 100 to 300 μm and a length of about 6 to 8 cm, it has a resistance of several hundred Ω. Therefore, it is difficult to apply a conventional ITO electrode to a large area display, which is why it is difficult to apply a conventional touch screen in a large area display. However, the low resistance line 134 made of metal may be formed of metal to keep the resistance of the second electrode pattern 130 low, and as a result, the sensitivity of the touch panel sensor 100 may be improved and a large area display may be performed. Application is also possible at.

When there is substantially no finger or the like, the basic capacitance value of the first electrode pattern 120 and the second electrode pattern 130 may be determined by the capacitance between the bridge portion 124 and the low resistance line 134. . While interposed between optical ITO films (OCA) between ITO films facing in conventional touch panel sensors using only ITO electrodes, the thickness of the OCA is separated by about 200 μm, so that both electrode patterns form a basic capacitance, while the present embodiment Bridge portion 124 and the low resistance line 134 according to the example can be adjusted to form a basic capacitance in the range of about 200 ~ 1000 times more than the thickness of the insulating pattern 140, about 0.1 ~ 1.0㎛ spaced, At this time, the intersection area between the bridge portion 124 and the low resistance line 134 is drastically reduced, so that the basic capacitance can be appropriately adjusted to a desired value.

Since the intersection area between the bridge portion 124 and the low resistance line 134 can be made small, the change in capacitance can be maintained sensitively using the extension portion 122 exposed to the surroundings, and the relative capacitance is relatively low. Can be variously changed according to design specifications, and the length of the electrode pattern can be formed long, so that it can be easily applied to a large area display. In addition, since the intersection area between the bridge part 124 and the low resistance line 134 is small, even if the second electrode pattern 130 is formed below the first electrode pattern 120, the contact position is basically detected due to the change in capacitance. Is possible.

In addition, it is possible to increase or decrease the resistance by adjusting the thickness of the low resistance line 134, and because the width of the basic line remains the same, it may not cause a loss in the overall light transmittance. That is, in this embodiment, even if the metal content is increased in order to lower the resistance, the light transmittance does not decrease.

In the present embodiment, the low resistance line 134 is formed in a straight line with respect to a plane, but in some cases, it may be provided in a regular or irregular curved or bent form so as not to be more visible from the outside.

In addition, a light absorbing part may be further formed on the low resistance line 134. That is, to prevent reflection of dark colors or light such as copper / titanium (Cu / Ti), molybdenum (Mo), chromium (Cr), and black chrome on the upper surface of the metal low resistance line 134. The upper surface of the low resistance line 134 may be prevented from shining by forming a fine pattern together. Alternatively, the low resistance line 134 itself may be formed of a dark metal such as copper / titanium (Cu / Ti), molybdenum (Mo), chromium (Cr), and black chrome. .

In addition, although the low resistance line 134 is formed on the top surface of the first electrode pattern 120 and the transparent connection part 136 in this embodiment, the low resistance line may be formed on the bottom surface of the first electrode pattern and the transparent connection part. In this case, the low resistance line is formed first, and then an insulating pattern is formed on a portion crossing the first electrode pattern, an ITO layer is formed, and the ITO layer is etched by a pattern process to form the first electrode pattern 120 and The transparent connection portion 136 may be formed.

7 is a plan view illustrating a touch panel sensor according to an exemplary embodiment of the present invention.

Referring to FIG. 7, the touch panel sensor 200 according to the present exemplary embodiment may include a transparent substrate 210, a first electrode pattern 220 and a second electrode pattern 230, and a first electrode pattern formed on the transparent substrate 210. The insulating pattern 240 is interposed between the first electrode pattern 220 and the second electrode pattern 230.

The transparent substrate 210 may be formed of a synthetic resin film or a glass substrate. The first electrode pattern 220 may include an extension part 222 and a bridge part 224, and the second electrode pattern 230 may have a low resistance. Line 234 and transparent connection 236. For materials, structures, and formation methods, reference may be made to the description and drawings of the previous embodiment.

However, the second electrode pattern 230 includes a pattern line including a series of low resistance lines 234 and a transparent connection part 236. In the present embodiment, the plurality of low resistance lines 234 are grouped together to form a single line. It forms an electrode and one side is electrically connected. Unlike one low resistance line 134 of the previous embodiment, three low resistance lines 234 are grouped in this embodiment and may correspond to the one low resistance line 134. For example, if the pattern lines are used at intervals of about 5 mm in FIG. 2, in this embodiment, the pattern lines composed of the low resistance lines 234 and the transparent connectors 236 are connected in parallel at uniform intervals of about 1.7 to 1.0 mm. do.

A plurality of low-resistance lines 234 can be grouped to directly calculate the exact position of the finger without complicated calculations, and the influence of the finger contact area can be directly applied, thereby greatly improving the sensitivity. In addition, since a plurality of pattern lines are connected in parallel and spaced apart from each other by a sufficient distance between the low resistance lines 234 even in the same group, the electric field around the bridge portion 224 and the low resistance lines 234 during finger contact. Bypass can be formed to further improve the sensitivity according to the capacitance change.

Since the change in capacitance occurs at the edges or corners of the bridge portion and the low resistance lines 224 and 234, the longer the sides of the bridge portions forming a group at one electrode, the greater the change in capacitance even if the same finger contact exists. That is, since most touch reactions occur at the lengths of overlapping sides of the bridge portion and the low resistance lines 224 and 234, a case where a plurality of pattern lines arranged in parallel may be more sensitive than a case of using a single pattern line. have.

8 is a plan view illustrating a touch panel sensor according to an exemplary embodiment of the present invention.

Referring to FIG. 8, the touch panel sensor 300 according to the present exemplary embodiment may include a transparent substrate 310, a first electrode pattern 320 and a second electrode pattern 330 formed on the transparent substrate 310, and a first electrode pattern 330. The insulating pattern 340 is interposed between the first electrode pattern 320 and the second electrode pattern 330.

The transparent substrate 310 may be formed of a synthetic resin film or a glass substrate, and the first electrode pattern 320 includes an extension part 322 and a bridge part 324, and the second electrode pattern 330 has a low resistance. Line 334 and transparent connection 336. For materials, structures, and formation methods, reference may be made to the description and drawings of the previous embodiment.

However, as shown, the shape of the extension 322 may be formed of a continuous circular or oval motif, the transparent connection 336 has a concave curved side corresponding to the shape of the extension 322. It can be formed into a figure shape. The low resistance line 334 may be formed in the shape of a bent line irregularly bent on the transparent connection 336.

By designing the pattern to be spaced apart by the minimum width by the transparent connecting portion 336 of the first electrode pattern 320 and the second electrode pattern 330, it is possible to perform the function of shielding electromagnetic waves, the first electrode pattern ( The shape of the 320 and the transparent connector 336 may be provided in various shapes in order to improve electromagnetic shielding as well as sensitivity to changes in capacitance.

9 is a partially enlarged perspective view illustrating a touch panel sensor according to an exemplary embodiment of the present invention.

9, the touch panel sensor according to the present embodiment may further include a low resistance pattern 160 formed on the first electrode pattern 120. The low resistance pattern 160 may be formed on the extension 122 or the bridge 124 and may be formed of a material having a lower resistance than the transparent conductive material. In this embodiment, the low resistance pattern 160 is formed of the same metal material as the low resistance line 134, and is formed separately from the low resistance line 134 to be formed to a thickness of about 0.3 μm and a width of about 10 μm or less. There is a number.

The low resistance pattern 160 may be formed in the horizontal direction along the first electrode pattern 120, and the resistance of the first electrode pattern 120 may be relatively reduced by the low resistance pattern 160. In addition, although the low resistance pattern 160 may have a non-transparent characteristic like the low resistance line 134, it may also be provided as a metal thin film formed to a thickness of 100 μm or less, and thus may be formed to have a relatively light transmissive characteristic.

The low resistance pattern 160 may be formed in a straight line. Alternatively, the low resistance pattern 160 may be formed in a curved or bent form, and the curved or bent form may be formed in a regular or irregular shape. If irregularly formed can improve the degree of not visible from the outside.

10 is a partially enlarged perspective view illustrating a touch panel sensor according to an embodiment of the present invention.

Referring to FIG. 10, the touch panel sensor according to the present exemplary embodiment may further include a discontinuous low resistance pattern 165 formed on the surface of the first electrode pattern 120. The discontinuous low resistance pattern 165 may be formed on the extension 122 or the bridge 124 and may be formed of a material having a lower resistance than the transparent conductive material. Whereas the low resistance pattern 160 is a metal line connected to one, the low resistance pattern 165 in the present embodiment may be formed entirely or locally on the top or bottom surface of the first electrode pattern 120.

The low resistance pattern 165 may be formed to face a specific direction along the first electrode pattern 120, but may be formed in different directions. In addition, the low resistance line 134 may also be formed on the transparent connection part 136 (134-1), and may be provided in a state formed on the surface thereof, not in a form mixed with a conductive material.

In addition, the low resistance pattern 165 and the low resistance line 134-1 are for reducing the overall resistance of the first electrode pattern 120 or the transparent connection part 136. Even if 134-1 is arranged or distributed in a separated state, the ends of the adjacent low resistance patterns 165 may be preferably overlapped or vertically connected to the same line.

The plurality of low resistance patterns 165 and the low resistance lines 134-1 which are separated from each other may be provided according to a regular arrangement, but may be provided in an irregular manner, as in the present embodiment, and formed irregularly. If so, the degree of non-visualization can be improved.

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.

100, 200, 300 ： Touch panel sensor
110, 210, 310 ： Transparent board
120, 220, 320: First electrode pattern
122, 222, 322 ： Extension
124, 224, 324: Bridge part
130, 230, 330: second electrode pattern
134, 234, 334: Low resistance line
136, 236, 336: transparent connection

Claims (20)

In the touch panel sensor placed on the display for detecting the contact position of the object,
Transparent insulating substrates;
A first electrode pattern formed of a transparent conductive material on one surface of the transparent insulating substrate and provided side by side; And
It is formed on the transparent insulating substrate to be parallel to the first electrode pattern on the same surface as the first electrode pattern, is electrically separated from the first electrode pattern, spaced apart from the first electrode pattern and made of a transparent conductive material And a second electrode pattern including a plurality of transparent connecting parts formed and low resistance lines formed on the plurality of transparent connecting parts.
The low resistance line reduces the overall resistance of the second electrode pattern. The method of claim 1,
And an insulating layer or an insulating pattern formed between the first electrode pattern and the low resistance line to electrically separate the first electrode pattern and the low resistance line. The method of claim 2,
The insulating layer or the insulating pattern is a touch panel sensor, characterized in that provided using SiO ₂ , Si ₃ N ₄ or TiO ₂ . The method of claim 2,
The insulating layer or the insulating pattern is a touch panel sensor, characterized in that formed to a thickness of 0.1 ~ 1.0㎛. The method of claim 1,
The transparent connection part is a touch panel sensor, characterized in that formed on the same material and the same surface as the first electrode pattern. The method of claim 1,
The low resistance line is a touch panel sensor, characterized in that formed in the form of a straight line, regular or irregular curve, or regular or irregular bending. The method of claim 1,
The low resistance line is arranged in a state separated from each other on the transparent connection portion and the touch panel sensor, characterized in that for electrically connecting the entire plurality of transparent connection. The method of claim 7, wherein
Touch panel sensor, characterized in that the low resistance line is formed in an irregular arrangement. The method of claim 1,
The first electrode pattern includes a plurality of extension parts provided in a line along one direction and a plurality of bridge parts connecting the plurality of extension parts. 10. The method of claim 9,
The first electrode pattern may be formed of a material having a lower resistance than the transparent conductive material, and further include a low resistance pattern formed on the first plurality of extension parts or the plurality of bridge parts. The touch panel sensor, characterized in that electrically separated from the second electrode pattern. The method of claim 10,
The low resistance pattern is a touch panel sensor, characterized in that in the form of a straight, regular or irregular curve or regular or irregular bent line on the extension or the bridge portion formed of a transparent conductive material. The method of claim 10,
And the low resistance pattern is arranged on the first electrode pattern in a state of being separated from each other on the extension part or the bridge part formed of a transparent conductive material. The method of claim 1,
The bridge unit is characterized in that the touch panel sensor is stacked in a state located above or below the low resistance line. The method of claim 1,
The transparent insulation substrate is a touch panel sensor, characterized in that the synthetic resin film or glass substrate. The method of claim 1,
And a light absorbing part formed on an upper surface of the low resistance line facing the display. 16. The method of claim 15,
The light absorbing unit is formed using any one of copper / titanium (Cu / Ti), molybdenum (Mo), chromium (Cr), and black chrome (Black Chrome). The method of claim 1,
The low resistance line is formed using any one of copper / titanium (Cu / Ti), molybdenum (Mo), chromium (Cr), and black chrome (Black Chrome). The method of claim 1,
The low resistance line is a touch panel sensor, characterized in that formed using a metal, such as gold, silver and metals such as aluminum, nickel, titanium or an alloy using a metal. The method of claim 1,
And a plurality of the low resistance lines are electrically connected and grouped. 20. The method of claim 19,
The grouped low resistance line is a touch panel sensor, characterized in that the top, bottom, middle portion or a combination thereof is electrically connected.

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