KR101719371B1 - Electrostatic capacity type touch screen panel - Google Patents

Abstract

The present invention relates to a touch screen panel capable of eliminating a static electricity problem that may occur during a process of a touch screen panel and a product, and includes a substrate; An electrode forming unit including a plurality of first electrode rows arranged on the substrate in parallel in a first direction and a plurality of second electrode rows arranged to cross the first electrode rows; A plurality of first routing wirings formed on the substrate at an outer portion of the electrode formation portion and connected to the plurality of first electrode rows and a plurality of second routing wirings connected to the plurality of second electrode rows, A routing wiring portion including two routing wirings; And a first insulating layer for insulating the first electrode row and the second electrode row at a position where the first electrode row and the second electrode row cross each other; And at least one first antistatic unit formed on at least one end of the plurality of first and second electrode lines outside the electrode forming unit to discharge static electricity flowing from the outside.

Description

[0001] ELECTROSTATIC CAPACITY TYPE TOUCH SCREEN PANEL [0002]

The present invention relates to a touch screen panel of a correcting capacity 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 screen panel includes a resistive type in which a metallic electrode is formed on a top plate or a bottom plate in accordance with a method of detecting a touched portion to determine a touched position as a voltage gradient according to a resistance in a state in which a direct current voltage is applied, A capacitive type in which an equipotential is formed on a conductive film and a touched portion is sensed by sensing a position where a voltage change of the upper and lower plates due to a touch is sensed and an LC value derived by touching the conductive film is read An electro-magnetic type in which a touch portion is sensed, and the like.

Hereinafter, a conventional touch screen panel of a capacitance type will be described with reference to FIG. 1 is a plan view of a capacitive touch screen panel according to the related art.

Referring to FIG. 1, a conventional capacitive touch screen panel includes an electrode forming portion A, a routing wiring portion B, and a pad portion C.

The electrode forming portion A is formed on the substrate 10 and includes a plurality of first electrodes 21 arranged in a first direction (e.g., an X-axis direction) and a plurality of first electrodes 21 arranged in a first direction And a plurality of second electrodes 22 which are arranged to cross each other in the vertical direction (e.g., the Y-axis direction). Although the first electrodes 21 and the second electrodes 22 intersect with each other, they are electrically isolated by an insulating layer (not shown). The first electrodes 21 adjacent to each other are separately formed, but are connected by the bridge 41, thereby forming the first channel in the row direction. That is, the bridge 41 connects neighboring first electrodes 21 through contact holes 30a and 30b formed in an insulating layer (not shown) covered on top of the first and second electrodes 21 and 22, The first electrodes 21 are connected to each other to form a first channel in the row direction to which the first electrodes 21 are connected. In addition, since the second electrodes 22 are integrally formed, a second channel in the column direction crossing the first channel is formed.

The routing wiring portion B includes a plurality of first routing wirings 42 and a plurality of second electrodes 22 formed on the outer periphery of the electrode forming portion A and connected to the plurality of first electrodes 21, And a plurality of second routing wirings 43 connected to the plurality of second routing wirings 43, respectively.

The pad portion C includes a plurality of first pads 61 connected to the plurality of first electrodes 21 through a plurality of first routing wires 42 and a plurality of second routing wires 43 And a plurality of second pads 62 connected to the plurality of second electrodes 22 through a plurality of second pads.

In the capacitive touch screen panel having such a structure, there is a problem that the static electricity which may be generated during the process, during the transportation of the product or during the use can not be extinguished. That is, there has been no touch screen panel capable of coping with static electricity that may be generated during the process, product transportation, or product use, so that a touch screen panel capable of properly responding to static electricity has been required.

Accordingly, it is an object of the present invention to provide a touch screen panel in which a static electricity that may be generated when a manufacturing process of a touch screen panel, a product transportation, and a product are consumed and is not damaged by static electricity even if static electricity is generated.

According to an aspect of the present invention, there is provided a capacitive touch screen panel including: a substrate; An electrode forming unit including a plurality of first electrode rows arranged on the substrate in parallel in a first direction and a plurality of second electrode rows arranged to cross the first electrode rows; A plurality of first routing wirings formed on the substrate at an outer portion of the electrode formation portion and connected to the plurality of first electrode rows and a plurality of second routing wirings connected to the plurality of second electrode rows, A routing wiring portion including two routing wirings; And a first insulating layer for insulating the first electrode row and the second electrode row at a position where the first electrode row and the second electrode row cross each other; And at least one first antistatic unit formed on at least one end of the plurality of first and second electrode lines outside the electrode forming unit to discharge static electricity flowing from the outside.

The touch screen panel of the present invention is formed along an outer portion of the electrode forming portion so as to be spaced apart from the electrode forming portion and includes first and second routing wirings so as not to contact the first and second routing wirings, And a second static electricity prevention part formed on the same layer and formed to overlap at least a part of the first antistatic part with the second insulating layer interposed therebetween.

In the above configuration, the first antistatic portion may include first antistatic patterns formed on the sides of the electrode formation portion where the first and second routing wirings are not formed, and first and second antistatic patterns formed on the electrode formation portion where the first and second routing wirings are formed Antistatic patterns formed on the sides of the first antistatic pattern.

Each of the plurality of first electrode columns includes a plurality of first electrode patterns electrically connected to each other, and each of the plurality of second electrode columns includes a plurality of second electrode patterns electrically connected to each other Wherein each of the first anti-static patterns includes first electrode patterns located at one end of each of the first electrode lines, second electrode patterns located at one end of each of the second electrode lines, Wherein each of the second antistatic patterns includes first electrode patterns located at the other end of each of the first electrode lines and second electrode patterns located at the other end of each of the second electrode lines, And are independently connected to the electrode patterns.

The second electrostatic latent portion may include a closed loop pattern spaced apart from the electrode forming portion and formed on the substrate along the outer portion of the electrode forming portion, Antistatic patterns extending from the closed-loop pattern to correspond to the outermost second electrode patterns of the two-electrode rows and being formed on the substrate.

In addition, the third antistatic portion is configured to be grounded, and each of the first, second, and third anti-static patterns is formed in a zigzag shape.

In addition, each of the first antistatic portions and the third antistatic pattern are configured to include at least one overlap portion formed between the second insulating layers and overlapping with each other.

According to the electrostatic capacity type touch screen panel of the present invention, it is possible to obtain the effect of extinguishing the static electricity introduced in the process or during the transportation of the product or outside the product, or the static electricity induced therein.

FIG. 1 is a plan view of a capacitive touch screen panel according to the related art,
2 is a plan view of a touch screen panel in which an internal anti-static pattern is formed according to an embodiment of the present invention,
3 is a view for explaining a layer in which the internal antistatic pattern shown in FIG. 2 is formed,
FIG. 4 is a plan view of a touch screen panel having an external antistatic pattern formed according to an embodiment of the present invention,
FIG. 5A is a cross-sectional view taken along line I-I 'of FIG. 4, FIG. 5B is a cross-sectional view taken along line II-II'
6 is a plan view of a touch screen panel having internal and external antistatic patterns formed according to an embodiment of the present invention,
FIG. 7A is an enlarged view of the R portion of FIG. 6, and FIG. 7B is a sectional view taken along line III-III 'of FIG. 7A.

First, the present inventors studied the route of generation of static electricity in order to counteract the static electricity of the touch screen panel. As a result of the study, the cause of the static electricity on the touch screen panel is that when the static electricity is inputted from the outside during the panel process or the module process or the product transportation, It is found that parasitic capacitors are generated and static electricity is generated therein. Accordingly, the present invention is based on the recognition that a touch screen panel which is not damaged by static electricity can be manufactured by removing the external static electricity and the internally generated static electricity.

As a countermeasure against static electricity flowing from the outside, the present inventors can solve the problem of static electricity introduced from the outside by forming external static prevention patterns connected to the electrode patterns on the outside of the electrode forming part, It is possible to solve the static electricity problem generated inside by forming the internal antistatic patterns so that at least a part of the internal antistatic patterns overlaps with the external antistatic patterns so as not to be in contact with the wiring.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals refer to like elements throughout the specification. FIG. 2 is a plan view of a touch screen panel in which an internal antistatic pattern is formed according to an embodiment of the present invention. FIG. 3 is a view for explaining a layer in which the internal antistatic pattern shown in FIG. FIG. 5A is a cross-sectional view taken along the line I-I 'of FIG. 4, FIG. 5B is a cross-sectional view taken along line II-II' of FIG. 7A is an enlarged view of the R portion in FIG. 6, and FIG. 7B is a sectional view taken along the line III-III 'in FIG. 7A. FIG. 7A is a plan view of the touch screen panel in which the internal and external antistatic patterns are formed according to the embodiment of the present invention. Sectional view.

2 and 3, the capacitive touch screen panel according to the embodiment of the present invention includes a rectangular electrode forming portion, a routing wiring portion formed on the outer side of the electrode forming portion, and a pad portion formed on one side of the routing wiring portion do.

The electrode forming portion includes a plurality of first electrode lines 140 arranged in a first direction (e.g., an X-axis direction) and a plurality of second electrode lines 140 arranged in a second direction And a plurality of second electrode rows 150 arranged in a matrix form. Each of the first electrode lines 140 includes first electrode patterns 141 formed of triangular, square, rhombic, polygonal, etc., and first connection patterns (not shown) connecting the first electrode patterns 141 ). The second electrode patterns 150 are formed by forming second electrode patterns 151 formed of triangular, square, rhombic, polygonal or the like similar to the first electrode patterns 141 and the second electrode patterns 151 And second connection patterns 153 that connect to each other. In addition, in the electrode formation part, the first electrode lines 140 and the second electrode lines 150 are electrically isolated from each other at the intersection of the first electrode lines 140 and the second electrode lines 150 A first insulating pattern 130 is formed. The first connection patterns 120 are formed separately from the first electrode patterns 141 and the second connection patterns 153 are formed integrally with the second electrode patterns 151 There is a difference in point. Since the first electrode patterns 141 adjacent to each other are formed separately but are connected in the first direction (e.g., the X direction) by the first connection patterns 120, the first channels in the row direction are formed do. Since the second electrode patterns 151 adjacent to each other are integrally formed together with the second connection patterns 153 and connected in the second direction (e.g., the Y direction) Thereby forming a second channel.

The routing wiring portion is connected to the plurality of first routing lines 161 and the plurality of second electrode lines 150, which are formed on the outer portion of the electrode forming portion and connected to the plurality of first electrode lines 140, respectively And a plurality of second routing wirings 163. In addition, a plurality of first routing wirings 161 are formed along the first side of the electrode formation portion, and a plurality of second routing wirings 163 are formed along the second side of the electrode formation portion.

The pad portion is connected to the plurality of first routing lines 161 through a plurality of first pads 171 and a plurality of second routing lines 163 connected to the plurality of first electrode lines 140, And a plurality of second pads 173 connected to the plurality of second electrode lines 150, respectively.

The first and second electrode patterns 140 and 150 are formed in the outer region of the electrode forming portion in which the plurality of first and second electrode rows 140 and 150 are formed and the second insulating patterns 130 are formed to prevent the first and second electrode rows 140 and 150 from being in electrical contact with each other. 141, 151, and the first and second routing wirings 161, 163, respectively. The internal static electricity prevention part 180 includes a closed loop pattern 180a spaced apart from the electrode forming part and formed on the substrate 100 along four sides of the electrode forming part and a closed loop pattern 180b extending from the closed loop pattern 180a, 100) formed on the inner surface of the substrate. The closed loop pattern 180a and the internal antistatic patterns 180b are formed so as not to be electrically connected to the first and second routing wirings 161 and 163 as shown in FIG. Since the closed loop pattern 180a is grounded via the ground line 180c, charges due to static electricity are discharged to the outside, thereby preventing damage to the touch screen panel due to static electricity.

2, the internal anti-static patterns 180b are formed so as to face the first electrode patterns 141 located at both ends of each first electrode line 140, And are also opposite to the second electrode patterns 151 located at both ends of the electrode column 150, respectively. In addition, each internal anti-static pattern 180b is formed in a zigzag shape along the four sides of the electrode forming portion as shown in Figs. The internal static electricity prevention part 180 is preferably formed of a transparent conductive material such as ITO or IZO, but it is also possible to use another metal material having a large resistance value. The internal antistatic member 180 may be formed by a process of forming the first connection patterns 120 and the first and second routing wirings 161 and 163 and a process of forming the first and second insulation patterns 130 and 133, The static electricity generated in the process of forming the first and second electrode patterns 141 and 151 is discharged to the outside through the closed loop pattern 180a and the ground line 180c Or through the internal anti-static patterns 180b having a high resistance, it is possible to solve the static electricity problem generated during the process.

Next, the external antistatic unit 190 will be described with reference to Figs. 4, 5A, and 5B. 4 and 5B, since the electrode forming portion, the routing wiring portion and the pad portion are the same as those shown in FIGS. 2 and 3, a description thereof will be omitted below for the sake of simplicity, and an external antistatic portion 190 will be described.

The external static electricity prevention part 190 includes a first external static prevention pattern 190a formed on the side of the electrode forming part where the first and second routing interconnection lines 161 and 163 are not formed, And a second external anti-static pattern 190b formed on a side of the electrode forming portion where the electrodes 161 and 163 are formed. The first external anti-static patterns 190a may include first electrode patterns 141 positioned at both ends of each of the first electrode lines 140 and second electrode patterns 140 located at the second ends of the first electrode lines 140, as shown in FIGS. 4, 5A, And are independently connected to the second electrode patterns 151 located at both ends of each of the electrode rows 150. [

5A is a view showing first external static prevention patterns 190a formed on the side of the electrode forming portion where the first and second routing wirings 161 and 163 are not formed, Fig. 5A, each of the first external anti-static patterns 190a includes first electrode patterns 141 positioned at one end of each of the first electrode rows 140, And are independently connected to the second electrode patterns 151 located at one end of each of the electrode rows 150. The first external static protection pattern 190a may be formed in the zigzag pattern as shown in FIG. 4 and may be formed of the same material as the first and second electrode patterns 141 and 151.

5B is a view showing second external static prevention patterns 190b formed on the side of the electrode forming portion where the first and second routing wirings 161 and 163 are formed. Fig. As can be seen from FIG. 5B, each of the second external anti-static patterns 190b includes first electrode patterns 141 located at the other end of each of the first electrode rows 140, And are independently connected to the second electrode patterns 151 located at the other ends of the electrode rows 150. [ Each of the second external antistatic patterns 190b is connected to the first routing wiring 161 or the second routing wiring 163 and the first and second routing wirings 161 and 163 are connected to the first and the second Electrode patterns 141 and 151, respectively. The second external static protection pattern 190b is also formed in a zigzag pattern similar to the first external static protection pattern 190a and is formed of the same material as the first and second electrode patterns 141 and 151 .

As described above, since the first and second external antistatic patterns 190a and 190b are formed to have a high resistance, the process of forming the first and second electrode patterns 141 and 151, And the static electricity generated in the course of use are destroyed by these resistors.

6 is a plan view showing a touch screen panel having both the internal static electricity prevention unit 180 of FIG. 2 and the external static electricity prevention unit 190 of FIG. 4, FIG. 7A is an enlarged view of the R portion of FIG. 7B is a cross-sectional view taken along line III-III 'of FIG. 7A.

Referring to FIGS. 6, 7A and 7B, the internal static electricity prevention pattern 180b and the first and second external static prevention patterns 190a and 190b of the internal static electricity prevention unit 180 are formed in a zigzag pattern. Each of the internal anti-static patterns 180b and each of the first external static protection patterns 190a has a second insulating pattern 133 interposed therebetween so that at least a portion (black display portion) And a second insulating pattern 133 is formed so as to overlap at least a portion (black display portion) of each internal antistatic pattern 180b and each second external static prevention pattern 190b (Only the overlapping structure of the internal anti-static pattern 180b and the second external anti-static pattern 190b is shown in FIGS. 7A and 7B for convenience). 7B shows an example in which the second routing wiring 163 is formed in a two-layer structure of a lower layer 163a of a metal layer and an upper layer 163b of a transparent conductive material, 2 routing wirings 163 of the first embodiment. Although FIG. 7B illustrates that the routing wiring is formed in a two-layer structure, the present invention is not limited thereto, and various modifications may be made by those skilled in the art in accordance with the technical idea of the present invention.

According to the touch screen panel of the present invention as described above, the first and second external antistatic patterns 190a and 190b are connected to the first and second electrode patterns 141 and 151, 1 and the second external antistatic patterns 190a and 190b are formed of a material having a high resistance and are formed in a zigzag shape so as to have a high resistance value. Therefore, even if static electricity is generated during the process of forming the first and second electrode patterns 141 and 151 and the subsequent product transportation and use, the first and second external anti-static patterns 190a and 190b Can be eliminated.

The closed loop pattern 180a of the internal antistatic member 180 is grounded via the ground line 180c and the internal antistatic patterns 180b are electrically connected to the outermost first electrode patterns 140a of the first electrode lines 140, And is connected to the closed loop pattern 180a so as to correspond to the outermost second electrode patterns 151 of the first electrode lines 141 and the second electrode lines 150. [ The internal static electricity prevention part 180 constituted by the closed loop pattern 180a and the internal static electricity patterns 180b is connected to the first connection patterns 120 and the first and second routing wirings 161 and 163, When the static electricity is generated in the process of forming the first and second insulating patterns 130 and 133 and in the process of forming the first and second electrode patterns 141 and 151, Can be discharged to the outside through the closed loop pattern 180a and the ground line 180c or can be extinguished through the internal anti-static patterns 180b having high resistance, so that the static electricity problem generated during the process can be solved.

A touch screen panel according to an exemplary embodiment of the present invention includes a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), an electroluminescent display device Electroluminescence Device, EL), an electrophoretic display device, and the like. In this case, the substrate of the touch screen panel according to the embodiments of the present invention can be used as a substrate of the display device.

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 130: first insulation pattern
133: second insulation pattern 140: first electrode column
141: first electrode pattern 150: second electrode column
151: second electrode pattern 161: first routing wiring
163: second routing wiring 171: first pad
173: second pad 180: internal static electricity prevention part
180a: closed loop pattern 180b: internal anti-static pattern
190: external static electricity prevention part 190a: first external static electricity prevention pattern
190b: second external anti-static pattern

Claims (9)

Board;
An electrode forming unit including a plurality of first electrode rows arranged on the substrate in parallel in a first direction and a plurality of second electrode rows arranged to cross the first electrode rows;
A plurality of first routing wirings formed on the substrate at an outer portion of the electrode formation portion and connected to the plurality of first electrode rows and a plurality of second routing wirings connected to the plurality of second electrode rows, A routing wiring portion including two routing wirings; And
A first insulating layer for insulating the first electrode row and the second electrode row at a position where the first electrode row and the second electrode row cross each other; And
And a plurality of first static eliminators formed at one end of the plurality of first electrode arrays and the plurality of second electrode arrays at the outer periphery of the electrode forming unit to discharge static electricity flowing from the outside Touch screen panel.
The method according to claim 1,
The first and second routing lines are formed in the same layer as the first and second routing lines so as not to contact the first and second routing lines, Further comprising a second static electricity prevention part formed to overlap at least a part of each of the plurality of first antistatic parts with a predetermined gap therebetween.
The method according to claim 1,
Wherein each of the plurality of first antistatic parts comprises:
The first antistatic patterns formed on the side of the electrode forming portion where the first and second routing wirings are not formed,
And second anti-static patterns formed on the sides of the electrode formation portion where the first and second routing wirings are formed.
The method of claim 3,
Wherein each of the plurality of first electrode columns includes a plurality of first electrode patterns electrically connected to each other and each of the plurality of second electrode columns includes a plurality of second electrode patterns electrically connected to each other,
Wherein each of the first antistatic patterns includes first electrode patterns located at one end of each of the first electrode lines and second electrode patterns located at one end of each of the second electrode lines, Respectively,
Wherein each of the second antistatic patterns includes first electrode patterns located at the other end of each of the first electrode lines and second electrode patterns located at the other end of each of the second electrode lines, Is connected to the touch panel.
The method according to any one of claims 3 and 4,
Wherein each of the first and second anti-static patterns is formed in a zigzag shape.
3. The method of claim 2,
The second antistatic unit may include:
A closed loop pattern spaced apart from the electrode forming portion and formed on the substrate along an outer frame portion of the electrode forming portion;
And third antistatic patterns extending from the closed loop pattern to correspond to the outermost first electrode patterns of the first row of electrodes and the outermost second electrode patterns of the second row of electrodes and formed on the substrate Wherein the touch screen panel is a touch screen panel.
3. The method of claim 2,
Wherein the second anti-static portion is grounded.
The method according to claim 6,
Wherein each of the third anti-static patterns is formed in a zigzag shape.
9. The method of claim 8,
Wherein each of the plurality of first antistatic parts and the third antistatic pattern comprises at least one overlapping part formed to sandwich the second insulating layer and overlap each other.

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