KR101320074B1 - Capacitive touch screen panel - Google Patents

Abstract

The present invention relates to a capacitive touch screen panel capable of preventing damage caused by static electricity, comprising: a substrate; A plurality of first electrode rows formed on the substrate and arranged in a first direction; A plurality of second electrode rows formed on the same layer as the plurality of first electrode rows and arranged in a second direction crossing the first direction; An insulating layer formed between the substrate and the plurality of first and second electrode rows and including at least two first contact holes and at least two second contact holes; A plurality of first connection patterns formed between the substrate and the insulating layer and arranged in the first direction, wherein each of the plurality of first electrode columns includes first electrode patterns separated from each other, Each of the first connection patterns may have a first portion exposed through the first contact holes and a second portion exposed through the second contact holes, and the first electrode patterns may pass through the first contact holes. It is connected to the first portion of the first connection pattern, characterized in that connected to the second portion of the first connection pattern through the second contact holes.

Description

Capacitive Touch Screen Panel {CAPACITY TYPE TOUCH SCREEN PANEL}

The present invention relates to a touch screen panel of a fixed capacitance type.

In recent years, display devices such as liquid crystal displays (LCDs), electroluminescent displays, and plasma display panels have attracted attention because of their high response speed, low power consumption, and excellent color recall . Such display devices have been used in various electronic products such as televisions, computer monitors, notebook computers, mobile phones, display parts of refrigerators, personal digital assistants, and automated teller machines. Generally, these display devices constitute an interface with a user by using various input devices such as a keyboard, a mouse, and a digitizer. However, the use of a separate input device such as a keyboard and a mouse has been required to learn how to use the device and to inconvenience such as occupying a space, thereby making it difficult to improve the completeness of the product. Therefore, there is a growing demand for an input device that is convenient and simple and can reduce malfunctions. In accordance with such a demand, a touch screen panel has been proposed in which a user directly touches the screen with a hand or a pen to input information.

The touch screen panel is simple, has little malfunction, can be input without using a separate input device, and can be operated quickly and easily through the contents displayed on the screen. .

The touch panel may be formed of a metal electrode on the upper or lower plate according to a method of sensing a touched portion, a resistive type of conducting a resistive type that determines a touched position as a voltage gradient according to a resistance while applying a DC voltage. Capacitive type to detect the touched part by forming the equipotential in the film and sensing the position of voltage change of upper and lower panels according to the touch, and reading by touching LC value induced by the electronic pen touching the conductive film. It may be distinguished by an electromagnetic induction method (Electro Magnetic type) for detecting the portion.

Hereinafter, a capacitive touch screen panel according to the related art will be described with reference to FIGS. 1 and 2. 1 is a perspective view illustrating a portion of a capacitive touch screen panel according to the related art, and FIG. 2 is a cross-sectional view illustrating a portion of the touch screen panel illustrated in FIG. 1.

1 and 2, a conventional capacitive touch screen panel includes a substrate 10, a first electrode string, and a second electrode string. The first electrode array includes a plurality of first electrode patterns 40 and a first connection pattern 20 connecting the first electrode patterns 40 to each other, and the second electrode array includes a plurality of second electrodes. And a second connection pattern 60 connecting the patterns 50 and the second electrode patterns 50 to each other. The first electrode string and the second electrode string are cross formed so as not to contact each other.

In the capacitive touch screen panel described above, the first connection pattern 20 is formed on the substrate 10, and the first connection pattern 20 is formed on the entire surface of the substrate 10 on which the first connection pattern 20 is formed. A first insulating layer 30 is formed in which two contact holes 31a and 31b are formed so as to expose a portion of each of the first and second contact holes 31a and 31b. In addition, the first electrode patterns 40 of the first electrode string, the second electrode patterns 50 of the second electrode string 50, and the second connection pattern 60 are formed on the first insulating layer 30. And a second insulating layer 70 as a protective film on the entire surface of the first insulating layer 30 on which the second electrode patterns 40 and 50 and the second connection pattern 60 are formed. The first electrode patterns 40 are connected to each other through the first and second contact holes 31a and 31b of the first insulating layer 30 by the first connection pattern 20 formed on the substrate 10. .

In the conventional capacitive touch screen panel, the first electrode patterns 40 and the first connection pattern 20 of the first electrode array, the second electrode pattern 50 and the second connection pattern 60 of the second electrode array ) May be formed of a transparent conductive metal material (eg, ITO), and the first and second insulating layers 30 and 70 may be formed of silicon nitride, silicon oxide, or an organic resin material.

As described above, in the capacitive touch screen panel according to the related art, contact holes 31a and 31b are formed in the first insulating layer 30 so that the first electrode patterns 40 adjacent to each other are connected to the first connection pattern 20. It was configured to be electrically connected by.

However, in the capacitive touch screen panel according to the related art, the diameters of the contact holes 31a and 31b are very small since the first and second electrode patterns 40 and 50 are made small in order to improve touch accuracy. Since the resistance of an object is inversely proportional to the size of the cross-sectional area, the resistance of the portion of the first electrode pattern 40 filled in the contact holes 31a and 31b having a small diameter increases. Therefore, when static electricity is generated during the process, a high current temporarily flows into the conductor filled in the contact holes 31a and 31b, so that the contact holes 31a and 31b are damaged or the conductors filled in the contact holes 31a and 31b are separated from each other. There was a problem that the parts of the first connection pattern 20 in contact with the damage.

In addition, the portion of the first electrode pattern 40 and the portion of the second connection pattern 60 overlapping the first connection pattern 20 formed under the first insulating layer 30 are different from each other because of the step difference. ) Will protrude upward compared to the non-overlapping part. Therefore, when static electricity is generated during the manufacturing process of the touch screen panel, high current flows along the surface of the conductor and is concentrated to the protruding portion, thereby protruding the first electrode pattern 40 and the second connection pattern 60. Static electricity is concentrated in In particular, since the first electrode pattern 40 and the second connection pattern 60 are located close to each other, a strong electric field is formed between the protrusion of the first electrode pattern 40 and the protrusion of the second connection pattern 60. There was a problem that they are damaged.

Accordingly, an object of the present invention is to solve the above-described problem, and to provide a capacitive touch screen panel capable of preventing damage caused by static electricity.

In order to achieve the above object, the capacitive touch screen panel according to an embodiment of the present invention, the substrate; A plurality of first electrode rows formed on the substrate and arranged in a first direction; A plurality of second electrode rows formed on the same layer as the plurality of first electrode rows and arranged in a second direction crossing the first direction; An insulating layer formed between the substrate and the plurality of first and second electrode rows and including at least two first contact holes and at least two second contact holes; A plurality of first connection patterns formed between the substrate and the insulating layer and arranged in the first direction, wherein each of the plurality of first electrode columns includes first electrode patterns separated from each other, Each of the first connection patterns may have a first portion exposed through the first contact holes and a second portion exposed through the second contact holes, and the first electrode patterns may pass through the first contact holes. It is connected to the first portion of the first connection pattern and is connected to the second portion of the first connection pattern through the second contact holes.

In the above configuration, each of the plurality of second electrode strings includes a plurality of second electrode patterns integrally formed with a plurality of second connection patterns, wherein the first electrode pattern is a first connection formed under the insulating layer. A first concave portion and a second concave portion respectively formed at both ends of the portion overlapping the pattern, wherein the second connection pattern is formed at both ends of the portion overlapping with the first connection pattern, and And opposing third concave portions and fourth concave portions opposing the second concave portions.

The configuration further includes a plurality of first sub connection patterns formed in parallel with the plurality of first connection patterns, wherein the insulating layer includes at least two third contact holes exposing a third portion of the first sub connection pattern. And at least two fourth contact holes exposing the fourth portion of the first sub connection pattern.

The configuration further includes a plurality of first sub connection patterns formed in parallel with the plurality of first connection patterns, wherein each of the plurality of second electrode rows is integrally formed with a plurality of second connection patterns. At least two third contact holes exposing a third portion of the first sub connection pattern and at least two second exposing fourth portions of the first sub connection pattern. Four contact holes are further included, wherein the separated electrode patterns include first and second recesses formed at both ends of the portion overlapping the first connection pattern, and both ends overlapping the first sub connection pattern. A first convex portion and a second convex portion formed in the second concave portion, wherein the second concave portion is formed at both ends of the portion overlapping with the first concave pattern and faces the first concave portion; And a fourth concave portion facing the second concave portion, both ends overlapping the first sub connection pattern, and facing the third convex portion and the second convex portion facing the first convex portion. And a fourth convex portion.

In the above configuration, the first connection pattern further includes a first intermediate portion positioned between the first portion and the second portion, and the first sub connection pattern is a second portion located between the third portion and the fourth portion. Further comprising an intermediate portion, wherein at least one of the first and second portions is formed to be in line with the first intermediate portion or is formed at a predetermined angle, and at least one of the third and fourth portions is the second It is formed to be in line with the middle portion or formed to form the predetermined angle.

In the above configuration, the first connection pattern and the first sub connection pattern include any one of copper (Cu), molybdenum (Mo), and aluminum / nickel (Al / Ni) alloy.

In the above configuration, the first connection pattern and the first sub connection pattern include a first metal layer, a second metal layer and a transparent metal layer sequentially formed on the substrate, wherein the first metal layer includes an AlNd layer, and The second metal layer includes an Mo layer, and the transparent metal layer includes an ITO layer or an IZO layer.

According to the capacitive touch screen panel according to the embodiment of the present invention, damage to the contact hole and the connection pattern due to static electricity can be prevented by increasing the number of contact holes formed in the insulating layer.

In addition, the material of the connection pattern formed under the insulating layer may be formed of a specific material having a low resistivity, a material having a low contact resistance, or the connection pattern may be formed into a plurality of layers using a specific metal layer. By forming, it is possible to prevent damage to the contact hole and the connection pattern by the static electricity.

In addition, by forming at least two connection patterns formed under the insulating layer, even if an abnormality occurs in one connection pattern due to static electricity, another connection pattern is used, thereby obtaining a touch screen panel that is normally operated.

In addition, by extending the distance between the protrusion of the first electrode pattern and the protrusion of the second connection pattern overlapping the first connection pattern, it is possible to prevent damage of the protrusion of the first electrode pattern and the protrusion of the second connection pattern by static electricity. have.

1 is a perspective view showing a portion of a capacitive touch screen panel according to the prior art;
FIG. 2 is a cross-sectional view of a portion of the touch screen panel illustrated in FIG. 1;
3 is a plan view of a touch screen panel according to an embodiment of the present invention;
4A is a cross-sectional view of the touch screen panel taken along the line II-II 'of FIG. 3;
4B to 4D are plan views illustrating an enlarged view of portion A of FIG. 3, wherein a plan view of a touch screen panel in which a configuration of a first connection pattern and a contact hole is changed;
FIG. 5 is a cross-sectional view illustrating another embodiment of the touch screen panel taken along the line II-II ′ of FIG. 3;
6A to 6C are enlarged plan views of portion A of FIG. 3, illustrating plan views of a touch screen panel in which configurations of first electrode patterns, second connection patterns, and contact holes are changed.

The present invention starts from the recognition that certain parts such as contact holes, electrode patterns, and connection patterns of the touch screen panel are susceptible to static electricity.

The inventors of the present invention have conducted research to prevent damage of the touch screen panel by the static electricity based on this recognition, and as a result, the following solutions were obtained.

First, by increasing the number of contact holes formed in the insulating layer it was possible to prevent damage to the contact hole and the connection pattern by the static electricity. Increasing the number of contact holes increases the cross-sectional area of the electrode material filled in the entire contact hole, thereby reducing the size of the overall resistance of the electrode pattern portion filled in the contact hole, and also reducing the size of the contact resistance due to the parallel connection. Therefore, even if a high current flows suddenly into the contact hole due to static electricity, the overall resistance of the contact hole can be reduced, thereby increasing the critical breakdown voltage of the contact hole.

Second, the material of the connection pattern for connecting the separated electrode patterns may be formed of a plurality of layers using a specific material having a low resistivity, a material having a low contact resistance with the first electrode pattern, or using a specific metal layer. By forming, it was possible to prevent the damage of the contact hole and the connection pattern by the static electricity. When the material having the low specific resistance is used as the connection pattern, the resistance of the entire connection pattern in contact with the electrode pattern is lowered. When the material having the low contact resistance is used as the connection pattern, the contact resistance generated by the contact between the electrode pattern and the connection pattern is lowered. When a plurality of conductive materials are used as the connection pattern, the overall resistance of the electrode pattern and the connection pattern by parallel connection is lowered. Therefore, even if a high current flows suddenly through the connection pattern by static electricity, the overall resistance of the connection pattern can be reduced, so that the critical breakdown voltage of the connection pattern can be increased as compared with the related art.

Third, by forming at least two connection patterns formed under the insulating layer to connect the separated electrode patterns formed on the insulating layer, a touch screen panel that is normally operated even when static electricity is generated can be obtained. This is because the touch screen panel may operate normally because one connection pattern and the contact hole corresponding to the connection pattern are damaged by static electricity, so that the remaining connection patterns are maintained. In addition, since the plurality of connection patterns have the same effect as the parallel connection, the load on each connection pattern is reduced to 1/2.

Fourth, the distance between the protrusions of the first electrode pattern and the protrusions of the second connection pattern overlapping the first connection pattern, that is, the protrusions of the first electrode pattern is formed to be farther than the distance between the other parts. Since a strong electric field can be prevented from being formed between the protrusions of the second connection pattern and the second connection pattern, damage to the first electrode pattern and the second connection pattern due to static electricity can be prevented.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 3 to 6C. Like reference numerals refer to like elements throughout the specification.

3 is a plan view of a touch screen panel according to an embodiment of the present invention, FIG. 4A is a cross-sectional view of the touch screen panel taken along the line II-II 'of FIG. 3, and FIGS. 4B to 4C are the touch shown in FIG. 3. An enlarged plan view of a portion A of the screen panel, showing a modification of the first electrode pattern and the contact holes.

Referring to FIG. 3, a capacitive touch screen panel according to an embodiment of the present invention may include a substrate 100, a plurality of first electrode strings 130, a plurality of second electrode strings 135, and a plurality of substrates. The first routing lines 112, the plurality of second routing lines 114, the plurality of first pads 116, and the plurality of second pads 118 are included.

The plurality of first electrode columns 130 are arranged side by side in a first direction (eg, X-axis direction). Each of the first electrode columns 130 may include first electrode patterns 131 formed of a triangle, a square, a diamond, or the like, and first connection patterns 110 connecting the first electrode patterns 131. It includes.

The plurality of second electrode strings 135 are arranged side by side in a second direction (eg, the Y-axis direction) that intersects the plurality of first electrode strings 130. Each of the plurality of second electrode columns 135 may include second electrode patterns 136 and the second electrode patterns 136 formed in a triangle, a quadrangle, or a lozenge, similar to the first electrode patterns 131. The second connection patterns 137 to connect to each other.

The plurality of first routing wires 112 are formed on the substrate 100 and connected to the plurality of first electrode lines 130, respectively, and the plurality of second routing wires 114 are connected to the substrate 100. And are connected to the plurality of second electrode rows 135, respectively.

The plurality of first pads 116 are connected to the plurality of first electrode rows 130 through the plurality of first routing lines 112, respectively, and the plurality of second pads 118 are formed of a plurality of first pads 118. The second routing lines 114 are connected to the plurality of second electrode rows 135, respectively.

4A and 4B, an insulating film 120 is formed on an entire surface of the substrate 100 on which the first connection patterns 110 and the first and second routing wires 112 and 114 are formed. The plurality of first contact holes 120a, 120b and 120c exposing the first portions of the first connection patterns 110 and the second portions of the first connection patterns 110 may be exposed in the 120. Second contact holes 120d, 120e, and 120f are formed. In the exemplary embodiment of the present invention, the number of the first contact hole or the second contact hole exposing the first part or the second part of the first connection pattern 110 is illustrated as an example, but the present invention is not limited thereto. It is also possible to set the number of contact holes to at least two according to the size of the electrode pattern and the contact holes and their arrangement position.

In addition, the first connection patterns 110 are formed separately from the first electrode patterns 131, and the second connection patterns 137 are formed integrally with the second electrode patterns 136. However, on the contrary, the first connection patterns may be integrally formed on the first electrode patterns and the insulating layer, and the second connection patterns may be formed separately from the second electrode patterns under the insulating layer. In this case, neighboring second electrode patterns are interconnected by a second connection pattern formed under the insulating film.

4C is a plan view illustrating an example of a touch screen panel in which the first electrode patterns 131 separated from each other are connected by two first connection patterns 111a and 111b. In this case, the two first connection patterns 111a and 111b connect the adjacent first electrode patterns 131 and 131 through the first contact holes 121a, 121b, 121c, 121d, 121e and 121f. In addition, the two adjacent electrode patterns 131 and 131 are connected through the second contact holes 122a, 122b, 122c, 122d, 122e, and 122f. Therefore, the load on the static electricity applied to each of the two connection patterns 111a and 111b is reduced to 1/2, and the other connection is performed even if any one of the two connection patterns 111a and 111b is damaged. Since the current path is maintained by the pattern, the touch screen panel can be normally driven.

The first connection pattern 110 may be formed of a transparent conductive film such as indium tin oxide (ITO) or indium zinc oxide (IZO), copper (Cu), molybdenum (Mo), or an aluminum / nickel (Al / Ni) alloy. Can be used. Copper is preferable because of its low resistivity and low cost, and molybdenum or aluminum / nickel alloys have a high critical breakdown voltage due to low contact resistance with ITO or IZO used as the first electrode pattern. desirable. Silicon nitride, silicon oxide, or an organic material may be used as the material of the insulating layer 120.

Although the first connection pattern 110 is formed in a straight line in the touch screen panel of FIG. 4C, the present invention is not limited thereto. The first connection pattern 110 may be formed to have an intermediate portion and first and second portions extending from the intermediate portion and formed at a predetermined angle with respect to the intermediate portion. In addition, at least one of the contact holes may be formed to have a different size from the other contact holes.

FIG. 4D is a diagram illustrating a touch screen panel formed such that first and second portions of the first connection pattern are perpendicular to the middle portion.

Referring to FIG. 4D, the first connection pattern 110 includes a middle portion 110m formed in a straight line and a first portion 110i and a second couple portion 110j extending from both ends of the middle portion 110m. The first to sixth contact holes 123a, 123b, 123c, 123d, 123e, and 123f expose the first portion 110i, and the seventh to twelfth contact holes 123g, 123h, 123i, 123j, 123k, and 123l are formed to expose the second portion 121j. In the embodiment of FIG. 4D, the first and second portions 110i and 110j are formed to vertically cross the middle portion 110m, but the present invention is not limited thereto and may be formed to have a predetermined angle.

According to the touch screen panel according to the exemplary embodiment described above, a plurality of contact holes are formed in the insulating layer 120 to connect the neighboring first electrode patterns 131 and the first connection pattern 110. Therefore, the overall cross-sectional area of the first electrode pattern portion filled in the plurality of contact holes is increased, and as a result, the overall resistance value is reduced. Therefore, by increasing the number of contact holes formed in the insulating layer 120 to reduce the resistance, it is possible to prevent damage to the contact hole or damage to the first connection pattern by static electricity generated during the process.

Next, a touch screen panel according to another exemplary embodiment of the present invention will be described with reference to FIG. 5. FIG. 5 is a cross-sectional view of the touch screen panel taken along the line II-II ′ of FIG. 3.

In the capacitive touch screen panel illustrated in FIG. 5, other components except for the first connection pattern 110 are the same as the touch screen panel illustrated in FIG. 4A, and the same reference numerals are assigned to the same components. Detailed description will be omitted.

Referring to FIG. 5, the first connection pattern 110 includes a first metal layer 110a, a second metal layer 110b, and a third metal layer 110c sequentially formed on the substrate 100. As the material of the first metal layer 110a, an aluminum alloy such as AlNd having a low specific resistance, and as a material of the second metal layer 110b, molybdenum (Mo) having a very low contact resistance with the first electrode pattern 131 and a third metal layer ( It is preferable that the same material as the first electrode pattern 131 (for example, transparent conductive material of ITO or IZO) is used as the material of 110c).

In the touch screen panel illustrated in FIG. 5, since the first connection pattern 110 is formed in a multi-layered structure, an effect such that the second metal layer 110b and the third metal layer 110c are connected in parallel can be obtained. 1 It is possible to obtain the effect of lowering the overall resistance of the connection pattern. In addition, molybdenum having a low contact resistance may be etched when the contact holes are formed in the insulating layer 120, but since the conductive material such as ITO and IZO having high hardness is formed on the molybdenum, molybdenum is not etched. Therefore, since the critical breakdown voltage of the first connection pattern 110 is increased, damage to the first connection pattern 110 due to static electricity generated during the process can be prevented. In the embodiment shown in FIG. 5, the first connection pattern is described as having a three-layer structure. However, the present invention is not limited thereto, and two or three layers may be formed according to physical properties of the material used as the material of the connection pattern. You may form more than a layer.

Next, a touch screen panel according to another exemplary embodiment of the present invention will be described with reference to FIGS. 6A to 6C. 6A through 6C are plan views of touch screen panels in which the configurations of the first electrode pattern, the second connection pattern, and the contact hole are changed.

6A to 6C, in the capacitive touch screen panel according to the exemplary embodiment of the present invention, other components except for the first electrode pattern 131 and the second connection pattern 137 are illustrated in FIGS. 3 to 5. Since the same components as those of the illustrated touch screen panel are given the same reference numerals, detailed description thereof will be omitted.

Referring to FIG. 6A, the first electrode pattern 131 of the capacitive touch screen panel may have a first concave portion formed at both ends of a portion overlapping with the first connection pattern 110 formed under the insulating layer 120. 131a and a second concave portion 131b, and the second connection pattern 137 is formed at both ends of the portion overlapping the first connection pattern 110 and faces the first concave portion 131a. And a fourth recessed portion 137b facing the third recessed portion 137a and the second recessed portion 131b. Here, portions of the first electrode pattern 131 and the second connection pattern 13 overlapping the first connection pattern 110 are formed between the substrate 100 and the insulating layer 120. Because of the step by the) protrudes upward.

According to the touch screen panel of FIG. 6A, the distance between the protrusion of the first electrode pattern 131 and the protrusion of the second connection pattern 110 is defined by the first recess 131a and the third recess 137a and the third recess 137a. Since the second concave portion 131b and the fourth concave portion 137b are lengthened, a weak electric field is formed between the protrusion of the first electrode pattern 131 and the protrusion of the second connection pattern 137 even when static electricity is concentrated on these protrusions. It is only formed. Therefore, damage to the first electrode pattern 131 and the second connection pattern 137 can be prevented.

Referring to FIG. 6B, the capacitive touch screen panel according to an exemplary embodiment of the present invention may include two first connection patterns 111a and 111b to connect one first electrode pattern and a neighboring first electrode pattern. It is provided. Here, portions of the first electrode pattern 131 and the second connection pattern 13 overlapping the first connection patterns 111a and 111b are formed between the substrate 100 and the insulating layer 120. It protrudes upward because of the step by 111a and 111b. Although the present embodiment has been described as having two first connection patterns, the present invention is not limited thereto, and two or more first connection patterns may be formed.

The first electrode pattern 131 has a first concave portion 131a and a second concave portion 131b formed at both ends of a portion overlapping with the first connection pattern 111a formed under the insulating layer 120. The first convex portion 131c and the second convex portion 131d are formed at both ends of the portion overlapping the first connection pattern 111b.

The second connection pattern 137 is formed at both ends of the portion overlapping the first connection pattern 111a and faces the first concave portion 131a and the second concave portion 137a and the second concave portion 131b. A third concave portion 137b opposite to the first convex portion 131c and formed at both ends of the portion overlapping the first connection pattern 111b. And a fourth convex portion 137d facing the second convex portion 131d.

According to the touch screen panel of FIG. 6B, the distance between the protrusion of the first electrode pattern 131 and the protrusion of the second connection pattern 137 overlapping the first first connection pattern 111a is the first concave portion 131a. And the third concave portion 137a, the second concave portion 131b, and the fourth concave portion 137b, so that even if the static electricity is concentrated on these protrusions, the protrusions of the first electrode pattern 131 and the second connection Only a weak electric field is formed between the protrusions of the pattern 137.

On the other hand, the distance between the protrusion of the first electrode pattern 131 overlapping the second first connection pattern 111b and the protrusion of the second connection pattern 137 is the first convex portion 131c and the third convex portion 137c. ) And the second convex portion 131d and the fourth convex portion 137d, so that the first first electrode pattern 131 overlaps the second first connection pattern 111b by the static electricity concentrated on these protrusions. An electric field is formed between the protrusions and the protrusions of the second connection pattern 137 to damage the protrusions.

Therefore, the static electricity is concentrated on the protrusions of the first electrode pattern 131 and the second connection pattern 137 overlapping the first connection pattern 111b so as to overlap the other first connection pattern 111a. Since the static electricity is not concentrated on the protrusions of the first electrode pattern 131 and the second connection pattern 137, the touch screen panel operates normally.

Referring to FIG. 6C, the first electrode pattern 131 of the capacitive touch screen panel according to the exemplary embodiment of the present invention may be disposed at both ends of a portion overlapping with the first connection pattern 110 formed under the insulating layer 120. The first concave portion 131a and the second concave portion 131b are formed, and the second connection pattern 137 is formed at both ends of the portion overlapping the first connection pattern 110 and the first concave portion. And a third recessed portion 137a facing the portion 131a and a fourth recessed portion 137b facing the second recessed portion 131b. Herein, portions of the first electrode pattern 131 and the second connection pattern 137 overlapping the first connection pattern 110 may be formed between the first connection pattern 110 formed between the substrate 100 and the insulating layer 120. It protrudes upward because of the step difference.

The first connection pattern 110 of the touch screen panel according to the embodiment of FIG. 6C is formed by extending from both ends of the center portion 110m and the center portion 110m as in the touch screen panel of FIG. 4D. And second portions 110i and 110j. In addition, the insulating layer 120 of the touch screen panel according to the exemplary embodiment of FIG. 6C may have first to sixth contact holes 123a, 123b, 123c, 123d, 123e, and 123f formed to expose the first portion 110i. ) And seventh to twelfth contact holes 123g, 123h, 123i, 123j, 123k, and 123l formed to expose the second portion 110j. In this embodiment, the number of contact holes is 12, and the first portion 110i and the second portion 110j of the first connection pattern 110 are shown to be perpendicularly intersected with respect to the central portion 110m. However, the present invention is not limited thereto. The number of contact holes may be appropriately set, and the first and second portions 110i and 110j may be formed to intersect in a straight line or at an angle with respect to the center portion.

According to the touch screen panel of FIG. 6C, the distance between the protrusion of the first electrode pattern 131 and the protrusion of the second connection pattern 137 is defined by the first recess 131a, the third recess 137a and the third recess 137a. Since the second concave portion 131b and the fourth concave portion 137b are lengthened, a weak electric field is formed between the protrusion of the first electrode pattern 131 and the protrusion of the second connection pattern 137 even when static electricity is concentrated on these protrusions. It is only formed. Therefore, damage to the first electrode pattern 131 and the second connection pattern 137 can be prevented.

Table 1 below shows the results of the electrostatic discharge (ESD) test of the conventional touch screen panel and the touch screen panel according to the embodiments 1 to 3 of the present invention. Electrostatic discharge gun (ESD gun) was applied to the touch screen panel to gradually increase the static electricity by air discharge type to measure the breakdown voltage that damage occurs.

Before attaching polarizer After attaching polarizer Conventional 2 kV 13kV Example 1 6 kV 23 kV Example 2 8 kV 23 kV Example 3 7 kV 20 kV

In the above experiment, the conventional touch screen panel is the touch screen panel shown in FIG. 1, Example 1 is an example of the touch screen panel shown in FIG. 6A, and Example 2 is an example of the touch screen panel shown in FIG. 6B. For example, Embodiment 3 shows examples of the touch screen panel shown in Fig. 6C, respectively.

As can be seen from the above experimental results, the critical breakdown voltage of the touch screen panel according to the embodiment of the present invention is 3 to 4 times before the polarizing film is attached, and after the polarizing film is attached, compared to the critical breakdown voltage of the conventional touch screen panel. Is increased by 1.54 ~ 1.77 times, which effectively prevents the damage caused by static electricity during the process.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

100: substrate 110, 111a, 111b: first connection pattern
110a: first metal layer 110b: second metal layer
110c: third metal layer 112: first routing wiring
114: second routing wiring 116: first pad
118: second pad 120: insulating film
120a ~ 120f, 121a ~ 121f, 122a ~ 122f, 123a ~ 123l: Contact Hole
130: first electrode string 131: first electrode pattern
131a: first recessed portion 131b: second recessed portion
131c: first convex portion 131d: second convex portion
135: second electrode string 136: second electrode pattern
137: second connection pattern 137a: third recessed portion
137b: fourth recessed portion 137c: third raised portion
137d: fourth convex portion

Claims (13)

Board;
A plurality of first electrode rows formed on the substrate and arranged in a first direction;
A plurality of second electrode rows formed on the same layer as the plurality of first electrode rows and arranged in a second direction crossing the first direction;
An insulating layer formed between the substrate and the plurality of first and second electrode rows and including at least two first contact holes and at least two second contact holes;
A plurality of first connection patterns formed between the substrate and the insulating layer and arranged in the first direction,
Each of the plurality of first electrode strings includes a plurality of first electrode patterns separated from each other,
Each of the plurality of first connection patterns includes a first portion exposed through the at least two first contact holes and a second portion exposed through the at least two second contact holes,
One first electrode pattern of the plurality of first electrode patterns is connected to the first portion of the first connection pattern through the at least two first contact holes, and is connected to the one electrode pattern in the first direction. Another adjacent first electrode pattern is connected to the second portion of the first connection pattern through the at least two second contact holes.
The method of claim 1,
Each of the plurality of second electrode rows includes a plurality of second electrode patterns integrally formed with the plurality of second connection patterns.
The first electrode pattern includes first and second recesses formed at both ends of portions overlapping the first connection patterns formed under the insulating layer.
The second connection pattern may be formed at both ends of the portion overlapping the first connection pattern, and include a third concave portion facing the first concave portion and a fourth concave portion facing the second concave portion. Touch screen panel.
The method of claim 1,
The first connection pattern further includes a first intermediate portion positioned between the first portion and the second portion,
At least one of the first and second portions is formed to form a straight line with the first middle portion, or a touch screen panel, characterized in that formed at a predetermined angle with the first middle portion.
Claim 4 has been abandoned due to the setting registration fee. The method according to any one of claims 1 to 3,
The first connection pattern may include any one of copper (Cu), molybdenum (Mo), and aluminum / nickel (Al / Ni) alloy.
The method according to any one of claims 1 to 3,
The first connection pattern may include a first metal layer, a second metal layer, and a transparent metal layer sequentially formed on the substrate.
The method of claim 5, wherein
The first metal layer includes an AlNd layer, the second metal layer includes a Mo layer, and the transparent metal layer comprises an ITO layer or an IZO layer.
The method according to any one of claims 1 to 3,
At least one of the first and second contact holes is different in size from other contact holes.
The method of claim 1,
The apparatus may further include a plurality of first sub connection patterns formed to be parallel to the plurality of first connection patterns.
The insulating layer may further include at least two third contact holes exposing a third portion of the first sub connection pattern and at least two fourth contact holes exposing a fourth portion of the first sub connection pattern. Touch screen panel, characterized in that.
The method of claim 1,
The apparatus may further include a plurality of first sub connection patterns formed to be parallel to the plurality of first connection patterns.
Each of the plurality of second electrode rows includes a plurality of second electrode patterns integrally formed with the plurality of second connection patterns.
The insulating layer further includes at least two third contact holes exposing a third portion of the first sub connection pattern and at least two fourth contact holes exposing a fourth portion of the first sub connection pattern,
The first electrode pattern may include a first concave portion and a second concave portion formed at both ends of a portion overlapping the first connection pattern, and first convex portions and a second concave portion formed at both ends overlapping the first sub connection pattern. 2 convex,
The second connection pattern may be formed at both ends of the portion overlapping with the first connection pattern, and may include a third concave portion facing the first concave portion, a fourth concave portion facing the second concave portion, and the first concave portion. And a third convex portion facing the first convex portion and a fourth convex portion facing the second convex portion, which are formed at both ends overlapping the sub connection pattern.
Claim 10 has been abandoned due to the setting registration fee. 10. A method according to any one of claims 8 and 9,
The first connection pattern and the first sub connection pattern may include any one of copper (Cu), molybdenum (Mo), and aluminum / nickel (Al / Ni) alloy.
10. A method according to any one of claims 8 and 9,
The first connection pattern and the first sub connection pattern may include a first metal layer, a second metal layer, and a transparent metal layer sequentially formed on the substrate.
The method of claim 11,
The first metal layer includes an AlNd layer, the second metal layer includes a Mo layer, and the transparent metal layer comprises an ITO layer or an IZO layer.
10. A method according to any one of claims 8 and 9,
The first connection pattern further includes a first intermediate portion positioned between the first portion and the second portion,
The first sub connection pattern further includes a second intermediate portion positioned between the third portion and the fourth portion,
At least one of the first and second portions is formed to be in line with the first intermediate portion or is formed to have a predetermined angle,
At least one of the third and fourth portions is formed to be in line with the second intermediate portion or is formed to form the predetermined angle.

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