KR101818258B1 - Touch screen panel for display device - Google Patents

Abstract

The present invention relates to a touch screen panel for a display device for preventing static electricity flowing from the outside, comprising: 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; A plurality of first pads formed on the substrate at one side of the routing wiring portion and connected to the plurality of first routing wiring lines respectively and a plurality of first pads connected to the plurality of second routing wiring lines, 2 pad, and a pad portion connected to at least one of the plurality of first and second pads and including an antistatic portion formed to one end of the substrate.

Description

TOUCH SCREEN PANEL FOR DISPLAY DEVICE

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a touch screen panel for a display device, and more particularly, to a touch screen panel for a display device for preventing static electricity flowing from the outside.

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 will be described with reference to FIGS. 1 and 2. FIG. FIG. 1 is a plan view of a conventional touch screen panel, and FIG. 2 is a cross-sectional view taken along line I-I 'of the touch screen panel shown in FIG.

Referring to FIGS. 1 and 2, 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 insulated by the insulating layer 20. 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 the neighboring first electrodes 21 through the contact holes 30a and 30b formed in the insulating layer 20 covered on the first and second electrodes 21 and 22, Thereby forming the 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 first and second routing wirings 42 and 43 are covered and protected from the insulating layer 20.

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 above-described conventional touch screen panel, the first and second pads 61 and 62 of the pad portion C are removed from the insulating layer 20 for connection to an external circuit such as a touch driving circuit. And is exposed to the outside as shown. Particularly, since the first and second pads 61 and 62 correspond to the distal ends to be cut at the time of scribing the mother substrate, the corner portions are exposed to be sharp.

Therefore, static electricity, which may be generated during the manufacturing process of the touch screen panel, during the transportation of the product, or during the use, may cause the first and second routing wirings 42 and 43 And is supplied to the first electrode 21 and the second electrode 22 by riding. The static electricity flows a large amount of current at a time, and thus the narrow bridge portion formed at the intersection of the first electrode 21 and the second electrode 22 may be damaged.

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 touch screen panel for a display device, comprising: 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 plurality of first pads formed on the substrate at one side of the routing wiring portion and connected to the plurality of first routing wiring lines respectively and a plurality of first pads connected to the plurality of second routing wiring lines, And a pad portion connected to at least one of the plurality of first and second pads and including an antistatic portion formed to one end of the substrate.

The touch screen panel further includes a first insulating layer for insulating the first electrode row and the second electrode row from each other at a position where the first electrode row and the second electrode row intersect the electrode forming portion, And a second insulating layer covering the first and second routing wirings formed in the routing wiring portion, the first and second pads and the antistatic portion being formed to expose the first and second pads.

The electrostatic discharge unit may further include: a plurality of first static electricity prevention units connected to the plurality of first pads; And a plurality of second antistatic parts connected to the plurality of second pads, respectively.

The routing wiring portion may include a ground line formed on the substrate so as to surround the outermost portion of the electrode forming portion and the outermost first routing wiring and the second routing wiring out of the plurality of first and second routing wirings And further comprising:

 The pad unit may include a first ground pad and a second ground pad which are respectively located outside the first and second pads out of the first and second pads and respectively connected to both ends of the ground line, And further comprising:

The electrostatic latent portion may be linearly formed from the first and second pads to one side of the substrate or may be formed in a meandering shape from the first and second pads to one side of the substrate. do.

In addition, the end of the anti-static unit formed to one end of the substrate is formed to have at least one branch.

The first and second routing wires may be formed of a material selected from Cu, Al, AlNd, CuOx, Cr, Mo, MoTi, And the antistatic portion is formed of a material selected from indium tin oxide (ITO), indium zinc oxide (IZO), and gallium-doped zinc oxide (GZO).

According to the touch screen panel for a display device according to the present invention, the static electricity prevented from the outside can be extinguished by forming the antistatic pattern connected to the pads of the touch screen panel exposed to the outside, Or the damage of the touch screen panel due to the static electricity flowing from the outside when the product is used can be prevented.

A ground line is formed so as to surround the outermost first and second routing wirings formed on the outermost portion of the electrode forming portion and the outermost routing wiring portion and is grounded so that charges due to the static electricity generated in the inside can be discharged to the outside The effect of preventing damage of the touch screen panel due to static electricity can be obtained.

1 is a plan view showing a touch screen panel for a display device according to a conventional technique,
FIG. 2 is a cross-sectional view taken along line I-I 'of the touch screen panel shown in FIG. 1,
3 is a plan view of a touch screen panel for a display device according to an embodiment of the present invention,
4 is a cross-sectional view taken along line II-II 'of the touch screen panel shown in FIG. 3,
5 to 7 are plan views showing details of examples of an anti-static pattern of a touch screen panel for a display device 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. Like reference numerals refer to like elements throughout the specification. FIG. 3 is a plan view showing a touch screen panel for a display device according to an embodiment of the present invention, FIG. 4 is a cross-sectional view taken along line II-II 'of the touch screen panel shown in FIG. 3, 7 is a plan view showing details of examples of the anti-static pattern of the touch screen panel for a display device according to the embodiment of the present invention.

3 and 4, a capacitive touch screen panel according to an embodiment of the present invention includes a rectangular electrode forming portion A, a routing wiring portion B formed outside the electrode forming portion, and a routing wiring portion B formed on one side thereof.

The electrode forming portion A includes a plurality of first electrode rows 140 arranged in parallel in a first direction (e.g., an X axis direction) and a plurality of first electrode rows 140 arranged in a second direction And a plurality of second electrode rows 150 arranged in a Y-axis direction.

Each of the first electrode lines 140 may include first electrode patterns 141 formed of a triangular shape, a square shape, a rhombic shape, a polygonal shape, a circular shape, an elliptical shape, (120). The second electrode patterns 150 are formed of second electrode patterns 151 formed of triangular, rectangular, rhombic, polygonal, circular, elliptical or the like similar to the first electrode patterns 141, And second connection patterns 153 connecting the first connection patterns 151 to each other. The first electrode rows 140 and the second electrode columns 150 are electrically connected to each other at a position where the first electrode rows 140 and the second electrode columns 150 cross each other, A first insulation pattern 130 is formed to isolate the first insulation layer 130 and the second insulation layer 130 from each other.

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 B includes a plurality of first routing wiring lines 161 formed on the outer portion of the electrode forming portion A and connected to the plurality of first electrode lines 140, A plurality of second routing wirings 163 connected to the first and second routing wirings 150, respectively, and a second insulation pattern 133 covering the first and second routing wirings. A plurality of first routing wirings 161 are formed along the first side of the electrode forming portion A and a plurality of second routing wirings 163 are formed along the second side of the electrode forming portion. A grounding line 165 is also formed in the routing wiring portion B so as to surround the outermost portion of the electrode forming portion A and the outermost first routing wiring 161 and the second routing wiring 163.

Since the ground line 165 formed in the routing wiring portion B is grounded through the first and second ground pads 175a and 175b formed in the pad portion C to be described later, So that damage to the touch screen panel due to static electricity can be prevented.

The pad portion C includes a plurality of first pads 171 connected to the plurality of first electrode lines 140 through the plurality of first routing wirings 161, A plurality of second pads 173 connected to the plurality of second electrode lines 150 through the plurality of second pads 163 and a plurality of second pads 173 connected to the plurality of first pads 171, A plurality of first static electricity patterns 181 extending to one end of the substrate 100 and a plurality of second antistatic patterns 181 connected to each of the plurality of second pads 173 and extending to one end of the substrate 100, (183). The pad portion C further includes a first ground pad 175a and a second ground pad 175b which are respectively located outside the outermost first pad 171 and the second pad 173 and respectively connected to both ends of the ground line 165, And a second ground pad 175b. The first and second ground pads 175a and 175b are grounded.

3 and 4, a plurality of first anti-static patterns 181 formed on the pad portion C are connected to each of the plurality of first pads 171, And extends to one end. The plurality of second anti-static patterns 183 are connected to each of the plurality of second pads 173 and extend to one end of the substrate 100. In addition, the first and second anti-static patterns 181 and 183 are exposed to the outside together with the first and second pads 171 and 173. Accordingly, the first and second pads 171 and 173 may be connected to an external circuit such as a touch driving circuit through a connection portion such as a flexible circuit board.

Meanwhile, since the first and second anti-static patterns 181 and 183 are formed up to the end of the substrate 100, static electricity can be introduced into the touch screen panel through the first and second anti-static patterns. 5 to 7, since the first antistatic patterns 181 and the second antistatic patterns 183 have the shape of a meandering stream, the static electricity flowing through them is the first 181a and 181b and the second antistatic patterns 183 and 183a and 183b since the first and second pads 171 and 173 are formed on the first and second pads 171 and 173, Most of it is destroyed by the resistor, and the internal components of the touch screen are not adversely affected.

5 to 7 of the present invention, the first antistatic patterns 181 and the second antistatic patterns 183 are formed in a straight shape (see FIG. 5), a straightly branched shape (see FIG. 6) (See FIG. 7), but the present invention is not limited thereto. For example, the rectangular meandering stream type of FIG. 7 may have any shape including a curved shape or a polygonal shape . 5), two branch patterns (see FIG. 6), and a second branch pattern (see FIG. 6) extending from the first antistatic patterns 181 and the second antistatic patterns 183 of FIG. (See Fig. 7), but the present invention is not limited thereto. For example, the end portions of the first antistatic patterns 181, 181a, 181b and the second antistatic patterns 183, 183a, 183b may have four or more branches.

In the touch screen panel according to the embodiment of the present invention, the first and second routing wirings 161 and 163 and the first and second pads 171 and 173 are formed of Cu, Al, AlNd, CuoX, Cr, Mo And MoTi. The first and second antistatic patterns 181 and 183 are formed of a transparent material such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), or GZO (Gallium-doped Zinc Oxide) The first and second antistatic patterns 181 and 183 may be formed of a conductive material such that the first and second routing wirings 161 and 163 are formed of a metal material such as Cu, Al, AlNd, CuOx, Cr, Mo, MoTi, As shown in FIG. However, since the first and second anti-static patterns 181 and 183 are formed of a transparent conductive material, the static electricity can be reliably removed from the outside since the resistance value is high.

The following Table 1 shows resistance values of the first and second anti-static patterns according to the embodiments of FIGS. 5 to 7 of the present invention.

Example 5) Straight branch type (Figure 6) The meandering stream type (Fig. 7a) Length (㎛) 105 150 1431 Width (탆) 18 30 18 material ITO Mo ITO Resistance (Ω) 542.5 3.6 7393.5

As shown in Table 1, the reason for the long length of the meandering river-shaped anti-static pattern is that it becomes longer than the case where it is formed straight in the same area. As can be seen from Table 1 above, when the material of the antistatic pattern is formed of a transparent conductive material, the resistance value is higher than that of the material of the antistatic pattern. In the case of the meandering stream type, It can be seen that the resistance value can be maintained at an overwhelmingly higher value than the other cases.

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 may be used as a substrate of the display device, or a touch screen panel may be attached to 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 120: first connection pattern
130: first insulation pattern 133: second insulation pattern
140: first electrode row 141: first electrode pattern
150: second electrode row 151: second electrode pattern
161: first routing wiring 163: second routing wiring
165: ground line 171: first pad
173: second pad 175a: first ground pad
175b: second ground pad 181: first antistatic pattern
183: second anti-static pattern 190: external anti-static portion
190a: 1st external static prevention pattern
190b: second external anti-static pattern

Claims (10)

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 plurality of first pads formed on the substrate at one side of the routing wiring portion and connected to the plurality of first routing wiring lines respectively and a plurality of first pads connected to the plurality of second routing wiring lines, And a pad portion electrically connected to at least one of the plurality of first and second pads and including an antistatic portion formed to one end of the substrate.
The method according to claim 1,
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 of the electrode forming portion cross each other; And
Further comprising a second insulating layer covering the first and second routing wirings formed in the routing wiring portion and configured to expose the first and second pads and the anti-static portion. Screen panel.
The method according to claim 1,
The electrostatic-
A plurality of first antistatic parts connected to the plurality of first pads, respectively; And
And a plurality of second antistatic parts connected to the plurality of second pads, respectively.
The method according to claim 1,
The routing wiring portion further includes a ground line formed on the substrate so as to surround the outermost portion of the electrode forming portion and the outermost first routing wiring and the second routing wiring out of the plurality of first and second routing wirings Wherein the touch screen panel is a touch screen panel.
5. The method of claim 4,
The pad portion may include a first ground pad and a second ground pad, which are respectively located outside the outermost first pad and the second pad out of the first and second pads and respectively connected to both ends of the ground line The touch screen panel comprising:
The method according to claim 1,
Wherein the electrostatic latent portion is linearly formed from the first and second pads to one end of the substrate.
The method according to claim 1,
Wherein the static electricity prevention part is formed in a meandering stream shape from the first and second pads to one side end of the substrate.
8. The method of claim 7,
Wherein an end of the antistatic portion formed to one end of the substrate is formed to have at least one branch.
The method according to claim 1,
Wherein the anti-static portion is formed of a material different from the first and second routing wires.
10. The method of claim 9,
Wherein the first and second routing wirings are formed of a material selected from Cu, Al, AlNd, CuOx, Cr, Mo, and MoTi, and the antistatic portion is formed of indium tin oxide (ITO), indium zinc oxide (IZO) wherein the first electrode is formed of a material selected from the group consisting of zinc oxide and zinc oxide.

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