KR102309172B1 - Touch panel and touch panel integrated organic light emitting display device - Google Patents

Abstract

A touch panel and a touch panel integrated organic light emitting display device are provided. The touch panel includes a substrate, a first touch electrode, a second touch electrode, a first connection electrode, and a second connection electrode. The first touch electrode is disposed on the substrate and includes a first sub-electrode and a second sub-electrode connected to the first sub-electrode. The second touch electrode intersects the first sub-electrode in the first sub-intersection region, intersects the second sub-electrode in the second sub-intersection region, and is separated from each other in the first sub-intersection region and the second sub-intersection region. The first connection electrode connects the second touch electrodes separated in the first sub-intersecting region to each other. The second connection electrode connects the second touch electrodes separated in the second sub-intersection region to each other. The first sub-electrode and the second sub-electrode may include a touch sensing unit and a floating unit electrically isolated from the touch sensing unit, respectively. In the touch panel, since the first sub-electrode and the second sub-electrode each include a floating part, parasitic capacitance generated between the finger and the first touch electrode may be reduced. In addition, since the second touch electrode intersects the first sub-electrode and the second sub-electrode in the first sub-intersection area and the second sub-intersection area, respectively, the mutual between the first touch electrode and the second touch electrode is reduced due to the floating part The capacitance may be supplemented, and the touch sensitivity of the touch panel may be improved.

Description

Touch panel and touch panel integrated organic light emitting display device {TOUCH PANEL AND TOUCH PANEL INTEGRATED ORGANIC LIGHT EMITTING DISPLAY DEVICE}

The present invention relates to a touch panel and a touch panel integrated organic light emitting display device, and more particularly, to a touch panel and a touch panel integrated organic light emitting display device having a thin thickness and excellent touch sensing performance.

A touch panel is a device that detects a user's touch input to a display device, and is widely used in personal portable devices such as smart phones and tablet PCs, display devices in public facilities, and large display devices such as smart TVs.

Recently, in order to reduce the thickness of the display device and improve visibility, an in-cell type touch panel-integrated display device in which a touch panel is integrated into the display device has been developed.

The in-cell type touch panel includes a first touch electrode, a second touch electrode, and a connection electrode. The first touch electrode and the second touch electrode cross each other in the crossing region, and the second touch electrode is separated from each other in the crossing region. The first touch electrode passes between the separated second touch electrodes in the crossing region, and the connection electrode connects the separated second touch electrodes to each other. The touch panel senses a touch input by detecting a change in a mutual capacitance between the first touch electrode and the second touch electrode when an electrostatic object comes into contact with the touch panel.

However, as the thickness of the touch panel decreases, the thickness of the cover film covering the upper surface of the touch panel may also decrease. A gap between the first and second touch electrodes and the user's finger is reduced due to the thin cover film. In this case, a parasitic capacitance between the first and second touch electrodes and the user's finger may increase, and an unintentional touch signal may be generated in a portion other than a portion actually touched by the finger due to the parasitic capacitance. This phenomenon is called a retransmission phenomenon. The retransmission phenomenon lowers the touch sensitivity of the touch panel and causes a touch malfunction.

Driving electrode pattern, touch panel, touch panel module and electronic device (Patent Application No. 10-2012-0015548)

The inventors of the present invention have recognized that the retransmission phenomenon occurs more frequently as the distance between the statically charged object and the first and second touch electrodes increases. Accordingly, the inventors of the present invention conducted research on a structure of a touch panel in which a retransmission phenomenon does not occur well even if the distance between the statically charged object and the first and second touch electrodes is close, and as a result, the retransmission A touch panel and a touch panel-integrated organic light emitting display device including a first touch electrode including a floating part for preventing a phenomenon and a first sub-electrode and a second sub-electrode increasing mutual capacitance were invented.

Accordingly, an object of the present invention is to provide a touch panel and a touch panel-integrated organic light emitting display device having a thin thickness and not easily causing a retransmission phenomenon.

Another problem to be solved by the present invention is to form the floating part of the first touch electrode with the same material as the touch sensing part of the first touch electrode, and make the floating part of the second touch electrode with the same material as the touch sensing part of the second touch electrode. It is to provide a touch panel and a touch panel integrated organic light emitting display device in which visibility deterioration due to the floating part is minimized by forming the display device.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to solve the above problems, a touch panel according to an embodiment of the present invention includes a substrate, a first touch electrode, a second touch electrode, a first connection electrode, and a second connection electrode. The first touch electrode is disposed on the substrate and includes a first sub-electrode and a second sub-electrode connected to the first sub-electrode. The second touch electrode intersects the first sub-electrode in the first sub-intersection region, intersects the second sub-electrode in the second sub-intersection region, and is separated from each other in the first sub-intersection region and the second sub-intersection region. The first connection electrode connects the second touch electrodes separated in the first sub-intersecting region to each other. The second connection electrode connects the second touch electrodes separated in the second sub-intersection region to each other. The first sub-electrode and the second sub-electrode may include a touch sensing unit and a floating unit electrically isolated from the touch sensing unit, respectively. In the touch panel according to an embodiment of the present invention, since the first sub-electrode and the second sub-electrode each include a floating part, the effective electrode surface area of the first touch electrode is reduced, and the area generated between the finger and the first touch electrode is reduced. Parasitic capacitance can be reduced. Accordingly, the retransmission phenomenon due to the parasitic capacitance may not easily occur. In addition, since the second touch electrode intersects the first sub-electrode and the second sub-electrode in the first sub-intersecting region and the second sub-intersecting region, respectively, the number of intersecting regions increases and the first touch electrode decreases due to the floating portion The mutual capacitance between and the second touch electrode may be supplemented, and the touch sensitivity of the touch panel may be improved.

According to another feature of the present invention, the second touch electrode crosses the first sub-electrode in the first sub-intersection region and is connected to the third sub-electrode and the third sub-electrode that intersects the second sub-electrode in the second sub-intersection region and a fourth sub-electrode intersecting the first sub-electrode in a third sub-intersecting region and intersecting the second sub-electrode in a fourth sub-intersecting region, wherein the third sub-electrode includes the first sub-intersecting region and the second sub-intersecting region. are respectively separated in the crossing region, the fourth sub-electrode is separated in the third sub-intersection region and the fourth sub-intersection region, respectively, and the third sub-electrode and the fourth sub-electrode are electrically separated from the touch sensing unit and the touch sensing unit, respectively It is characterized in that it includes a floating part.

According to another feature of the present invention, the touch panel includes a third connection electrode for connecting the fourth sub-electrodes separated in the third sub-intersection region to each other and a third connection electrode for connecting the fourth sub-electrodes separated in the fourth sub-intersection region to each other. 4 further connecting electrodes, wherein the first connecting electrode connects the third sub-electrodes separated in the first sub-intersecting region to each other, and the second connecting electrode connects the third sub-electrodes separated in the second sub-intersecting region to each other. characterized by doing.

According to another feature of the present invention, each of the first sub-electrode, the second sub-electrode, the third sub-electrode, and the fourth sub-electrode is a transparent electrode made of a transparent conductive oxide (TCO).

According to another feature of the present invention, each of the first sub-electrode, the second sub-electrode, the third sub-electrode, and the fourth sub-electrode is a metal line arranged in a mesh pattern.

According to another feature of the present invention, the floating portion of the first sub-electrode has an area ratio of 10% to 65% based on the total area of the first sub-electrode, and the floating portion of the second sub-electrode has the total area of the second sub-electrode. It is characterized in that it has an area ratio of 10% to 65% based on the .

According to another feature of the present invention, the touch panel further includes an overcoat layer covering the first touch electrode and the second touch electrode, wherein the overcoat layer forms the second touch electrode in the first sub-intersection region and the second sub-intersection region. a plurality of contact holes to be exposed; the first connection electrode is connected to the second touch electrode through the contact hole of the overcoat layer in the first sub-intersecting region, and the second connection electrode is the over-coating layer in the second sub-intersecting region. It is characterized in that it is connected to the second touch electrode through a contact hole.

According to another feature of the present invention, the touch panel includes a first overcoat layer disposed on the first sub-electrode in the first sub-intersection region and a second over-coat layer disposed on the second sub-electrode in the second sub-intersection region. Further comprising, wherein the first connection electrode is disposed on the first over-coating layer and extends along an outer surface where the first over-coating layer is terminated to be connected to the second touch electrode, and the second connection electrode is connected to the second over-coating layer It is disposed on the coating layer and extends along the outer surface where the second overcoat layer ends and is connected to the second touch electrode.

According to another feature of the present invention, the touch panel is disposed in a peripheral area on the substrate surrounding the touch area on the substrate on which the first touch electrode and the second touch electrode are disposed, and the first sub-electrode and the second sub-electrode are connected to each other. a connection routing wire for connecting, a first routing wire disposed in the peripheral area and connected to the connection routing wire, a second routing wire disposed in the peripheral area and connected to the second touch electrode, and a first routing wire and a first routing wire disposed in the peripheral area 2 It is characterized in that it further comprises a pad portion respectively connected to the routing wiring.

According to another feature of the present invention, the first touch electrode is disposed in a touch area on the substrate, and the first sub-electrode and the second sub-electrode are connected to each other in the touch area.

In order to solve the above problems, a touch panel according to another embodiment of the present invention includes a substrate, a first line electrode, a plurality of first segment electrodes connected to the first line electrode, a second line electrode, and a second line electrode and a plurality of second segment electrodes, a first connection electrode, and a second connection electrode connected to. The first line electrode is disposed on the substrate in a first mesh pattern and includes a first sub-line electrode and a second sub-line electrode connected to the first sub-line electrode. The second line electrode is disposed on the substrate in a second mesh pattern, intersects the first sub-line electrode in the first sub-intersection region, crosses the second sub-line electrode in the second sub-intersection region, and in the first sub-intersection region regions and second sub-intersecting regions, respectively. The first connection electrode connects the second line electrode separated in the first sub-intersection region. The second connection electrode connects the second line electrode separated in the second sub-intersection region. The first sub-line electrode and the second sub-line electrode may include a touch sensing unit and a floating unit electrically separated from the touch sensing unit, respectively. Since the touch panel according to another embodiment of the present invention includes the first line electrode and the second line electrode made of a low-resistance metal, the resistance of the touch panel may be lowered and the flexibility of the touch panel may be improved. In addition, since the plurality of first segment electrodes and the second segment electrodes increase the effective electrode area of the first line electrode and the second line electrode, touch performance may be improved. Meanwhile, since the first line electrode and the second line electrode each include a floating part, the retransmission phenomenon can be improved, and since the first line electrode and the second line electrode cross each other in the four sub-intersecting regions, the floating part The reduced mutual capacitance can be compensated again.

According to another feature of the present invention, the second line electrode intersects the first sub-line electrode in the first sub-intersecting region, and the third sub-line electrode and the third sub-intersecting region intersect the second sub-line electrode and the second sub-intersecting region. and a fourth sub-line electrode connected to the line electrode, crossing the first sub-line electrode and the third sub-intersecting region, and crossing the second sub-line electrode and the fourth sub-intersecting region. The third sub-line electrode is separated in the first sub-intersection region and the second sub-intersection region, respectively, and the fourth sub-line electrode is separated in the third sub-intersection region and the fourth sub-intersection region, respectively, the third sub-line electrode and The fourth sub-line electrode may include a touch sensing unit and a floating unit electrically separated from the touch sensing unit, respectively.

According to another feature of the present invention, the touch panel includes a third connection electrode for connecting the fourth sub-line electrode separated in the third sub-intersection region and a third connection electrode for connecting the fourth sub-line electrode separated in the fourth sub-intersection region. 4 further connecting electrodes, wherein the first connecting electrode connects the third sub-line electrode separated in the first sub-crossing region, and the second connecting electrode connects the third sub-line electrode separated in the second sub-crossing region characterized by doing.

According to another feature of the present invention, the plurality of first segment electrodes includes a first touch segment connected to the touch sensing unit of the first sub-line electrode and the touch sensing unit of the second sub-line electrode, respectively, and floating of the first sub-line electrode. a first floating segment connected to the floating portion of the secondary and second sub-line electrodes, respectively, and the plurality of second segment electrodes are respectively connected to the touch sensing unit of the third sub-line electrode and the touch sensing unit of the fourth sub-line electrode and a second floating segment connected to the floating portion of the second touch segment and the third sub-line electrode, and the floating portion of the fourth sub-line electrode, respectively.

According to another feature of the present invention, the first line electrode and the second line electrode each include a low-resistance metal, and the plurality of first segment electrodes and the plurality of second segment electrodes each include a transparent conductive oxide. do it with

In order to solve the above problems, the touch panel integrated organic light emitting display device according to an embodiment of the present invention includes a lower substrate, a thin film transistor disposed on the lower substrate, an organic light emitting device connected to the thin film transistor, and an opposite to the lower substrate and an upper substrate, a first touch electrode, a second touch electrode, a first connection electrode, and a second connection electrode disposed under the upper substrate. The first touch electrode includes a first sub-electrode and a second sub-electrode connected to the first sub-electrode. The second touch electrode intersects the first sub-electrode in the first sub-intersection region, intersects the second sub-electrode in the second sub-intersection region, and is separated from each other in the first sub-intersection region and the second sub-intersection region. The first connection electrode connects the second touch electrodes separated in the first sub-intersection region to each other, and the second connection electrode connects the second touch electrodes separated in the second sub-intersection region to each other. The first sub-electrode and the second sub-electrode may include a touch sensing unit and a floating unit electrically separated from the touch sensing unit, respectively. In the touch panel integrated organic light emitting display device according to an embodiment of the present invention, since the first sub-electrode and the second sub-electrode each include a floating part, the retransmission phenomenon may not easily occur even with a thin thickness. Also, since the second touch electrode intersects the first sub-electrode and the second sub-electrode in the first sub-intersection region and the second sub-intersection region, respectively, the mutual capacitance between the first touch electrode and the second touch electrode may be improved. have. Accordingly, the touch panel integrated organic light emitting display device can be thinned and used as a flexible display device.

According to another aspect of the present invention, the touch panel integrated organic light emitting display device further includes a color filter layer disposed under the upper substrate and a black matrix disposed under the color filter layer.

According to another feature of the present invention, the touch panel integrated organic light emitting display device further includes a polarizing plate disposed on an upper substrate.

According to another feature of the present invention, the first line electrode includes a first line electrode disposed in a first mesh pattern and a plurality of first segment electrodes connected to the first line electrode, and the second touch electrode is a second touch electrode. and a second line electrode disposed in a mesh pattern and a plurality of second segment electrodes connected to the second line electrode.

The details of other embodiments are included in the detailed description and drawings.

The present invention has an effect of minimizing parasitic capacitance generated between the first touch electrode and an object having static electricity or between the second touch electrode and an object having static electricity by forming floating portions on the first touch electrode and the second touch electrode, respectively. have.

The present invention divides the first touch electrode into a first sub-electrode and a second sub-electrode to increase the number of intersecting regions where the first and second touch electrodes intersect each other, thereby supplementing the reduction in mutual capacitance caused by the floating unit. has the effect of

According to the present invention, by forming the floating part of the first touch electrode and the floating part of the second touch electrode of the same material as the touch sensing part of the first touch electrode and the touch sensing part of the second touch electrode, respectively, a decrease in visibility due to the floating part is reduced. has the effect of minimizing.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a schematic plan view of a touch panel according to an embodiment of the present invention.
FIG. 2 is a schematic plan view of a T/P region of FIG. 1 showing a touch pixel of a touch panel according to an embodiment of the present invention.
3A is a schematic cross-sectional view of the touch panel taken along line III-III' of FIG. 2 .
3B is a schematic cross-sectional view of a touch panel according to another embodiment of the present invention.
4 is a schematic plan view of a touch pixel of a touch panel according to another embodiment of the present invention.
5 is a schematic plan view of a touch panel according to another embodiment of the present invention.
6 is a schematic plan view of a touch pixel of a touch panel according to another embodiment of the present invention.
FIG. 7 is a schematic cross-sectional view of a touch panel for VII-VII' of FIG. 6 .
8 is a schematic plan view of a touch pixel of a touch panel according to another embodiment of the present invention.
9 is a schematic cross-sectional view of the touch panel taken along line IX-IX' of FIG. 8 .
10 is a schematic cross-sectional view of a touch panel integrated organic light emitting display device according to an exemplary embodiment.
11 is a schematic cross-sectional view of a touch panel integrated organic light emitting display device according to another exemplary embodiment.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are exemplary, and thus the present invention is not limited to the illustrated matters. Like reference numerals refer to like elements throughout. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the case in which the plural is included is included unless otherwise explicitly stated.

In interpreting the components, it is interpreted as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between the two parts unless 'directly' is used.

When a device or layer is referred to as 'on' another device or layer, it includes any other layer or layer interposed therebetween or directly on the other device.

Although first, second, etc. are used to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the spirit of the present invention.

Like reference numerals refer to like elements throughout.

The size and thickness of each component shown in the drawings are illustrated for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated component.

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, technically various interlocking and driving are possible, and each of the embodiments may be implemented independently of each other or may be implemented together in a related relationship. may be

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic plan view of a touch panel according to an embodiment of the present invention. FIG. 2 is a schematic plan view of a T/P region of FIG. 1 showing a touch pixel of a touch panel according to an embodiment of the present invention. 3A is a schematic cross-sectional view of the touch panel taken along line III-III' of FIG. 2 . 1 to 3A , the touch panel 100 includes a substrate 110 , a first touch electrode 120 , a second touch electrode 130 , a first connection electrode 141 , and a second connection electrode 142 . ), including a connection routing wire 171 , a first routing wire 172 , a second routing wire 173 and a pad portion 180 . 1 to 3A schematically show the shapes of the first touch electrode 120 , the second touch electrode 130 , the first connection electrode 141 , and the second connection electrode 142 of the touch panel, and the first The shape, thickness, and number of the touch electrode 120 , the second touch electrode 130 , the first connection electrode 141 , and the second connection electrode 142 are not limited by FIGS. 1 to 3A .

The substrate 110 is a substrate for supporting various elements of the touch panel 100 , and may be a glass substrate or a plastic substrate. In some embodiments, the substrate 110 may be a flexible substrate having flexibility.

The substrate 110 includes a touch area T/A and a peripheral area P/A. The touch area T/A is an area in which the first touch electrode 120 , the second touch electrode 130 , the first connection electrode 141 , and the second connection electrode 142 are disposed. The peripheral area (P / A) surrounds the touch area (T / A), the connection routing wiring 171 , the first routing wiring 172 , the second routing wiring 173 and the pad portion 180 are disposed is the area Although the shapes of the touch area T/A and the peripheral area P/A are shown as rectangles in FIG. 1, the shapes of the touch area T/A and the peripheral area P/A are polygons except for the rectangle; It may be round or oval.

The first touch electrode 120 and the second touch electrode 130 are disposed in the touch area T/A of the substrate 110 and extend in different directions. For example, the first touch electrode 120 extends in a first direction D1 , and the second touch electrode 130 extends in a second direction D2 different from the first direction D1 . In FIG. 1 , for convenience of explanation, the first direction D1 is indicated in the vertical direction of the substrate 110 , and the second direction D2 is indicated in the horizontal direction of the substrate 110 . However, the first direction D1 and the second direction D2 are arbitrary directions, and the first direction D1 and the second direction D2 are not limited thereto.

The first touch electrode 120 and the second touch electrode 130 each include a plurality of electrode surfaces having a specific shape when viewed from a plane of the touch panel 100 . 1 , the first touch electrode 120 and the second touch electrode 130 each having rhombic electrode surfaces are illustrated for convenience of explanation. That is, the first touch electrode 120 includes rhombic electrode surfaces connected to each other along the first direction D1 , and the second touch electrode 130 includes rhombic electrode surfaces connected to each other along the second direction D2 . do. However, the shapes of the electrode surfaces of the first touch electrode 120 and the second touch electrode 130 are not limited thereto.

The electrode surfaces of the first touch electrode 120 and the electrode surfaces of the second touch electrode 130 are periodically repeated. A touch pixel T/P is defined based on the periodically repeated electrode surface of the first touch electrode 120 and the electrode surface of the second touch electrode 130 . That is, the touch area T/A of the touch panel 100 includes a plurality of touch pixels T/P, and an electrode surface of the first touch electrode 120 and an electrode surface of the second touch electrode 130 . is repeated in units of touch pixels (T/P). 1 schematically illustrates the size of the touch pixel T/P. Although the touch pixel T/P of FIG. 1 is rectangular, the shape of the touch pixel T/P is not limited thereto.

The touch panel 100 may include a plurality of first touch electrodes 120 and second touch electrodes 130 . For example, the plurality of first touch electrodes 120 extending in the first direction D1 and the plurality of second touch electrodes 130 extending in the second direction D2 are the touch regions of the substrate 110 . It is placed at (T/A). For convenience of explanation, FIG. 1 shows a touch panel 100 including two first touch electrodes 120 and four second touch electrodes 130 , and FIG. 2 shows a first sub-electrode 121 . , a portion of an electrode surface of each of the second sub-electrode 122 and the second touch electrode 130 is illustrated.

The first touch electrode 120 and the second touch electrode 130 are disposed on the color filter layer 191 of the substrate 110 as shown in FIG. 3A . However, since the color filter layer 191 is not necessarily required, in some embodiments, the color filter layer 191 may be omitted, and the first touch electrode 120 and the second touch electrode 130 are formed on the substrate 110 . may be placed on the In some embodiments, in order to prevent impurities and moisture from penetrating from the substrate 110 , a buffer layer may be additionally disposed between the substrate 110 and the first touch electrode 120 and the second touch electrode 130 . have.

Each of the first touch electrode 120 and the second touch electrode 130 may be a transparent electrode made of a transparent conductive oxide (TCO). For example, the first touch electrode 120 and the second touch electrode 130 may include indium tin oxide (ITO), indium zinc oxide (IZO), indium tin zinc oxide (ITZO), zinc oxide and zinc oxide, respectively. It may be a transparent electrode made of tin oxide or the like. Accordingly, when the touch panel 100 is applied to a display device, the visibility and transmittance of the display device are not significantly deteriorated by the first touch electrode 120 and the second touch electrode 130 .

The first touch electrode 120 includes a first sub-electrode 121 and a second sub-electrode 122 . That is, the first touch electrode 120 is divided into a first sub-electrode 121 and a second sub-electrode 122 . The first sub-electrode 121 and the second sub-electrode 122 are connected to each other and function as one first touch electrode 120 . The first sub-electrode 121 and the second sub-electrode 122 are connected to each other by a connection routing wire 173 in the peripheral area P/A, and are separated from each other in the touch area T/A.

The first sub-electrode 121 and the second sub-electrode 122 extend in a direction parallel to each other and include electrode surfaces having the same shape. 1 illustrates a first sub-electrode 121 and a second sub-electrode 122 extending in the first direction D1 and including a plurality of rhombus-shaped electrode surfaces, respectively.

As shown in FIG. 2 , the first sub-electrode 121 includes a floating part 121f and a touch sensing part 121t. The floating part 121f is electrically separated from the touch sensing part 121t. That is, the floating part 121f of the first sub-electrode 121 is electrically floating from the touch sensing part 121t of the first sub-electrode 121 . The touch sensing unit 121t is electrically connected to the first routing wire 171 , and is electrically connected to the touch sensing unit 122t of the second sub-electrode 122 . In some embodiments, the floating part 121f may be electrically grounded.

The floating part 121f of the first sub-electrode 121 may have a diamond shape as shown in FIG. 1 , but the shape of the floating part 121f is not limited thereto, and the floating part 121f may have various shapes. can be formed with The touch sensing unit 121t of the first sub-electrode 121 surrounds the floating unit 121f. For example, a hole is provided on each electrode surface of the first sub-electrode 121 , and a floating part 121f is disposed inside the hole. In this case, the portion of the first sub-electrode 121 surrounding the floating part 121f is referred to as a touch sensing part 121t. Although the floating part 121f and the touch sensing unit 121t are illustrated to have the same center point in FIG. 1, the floating unit 121f only needs to be electrically separated from the touch sensing unit 121t, so the floating unit 121f) The center point of , and the center point of the touch sensing unit 121t may be different from each other. In some embodiments, the touch sensing unit 121t of the first sub-electrode 121 may not surround the floating unit 121f, and the floating unit 121f may be disposed outside the touch sensing unit 121t.

The floating part 121f has a preset area. For example, the floating portion 121f may have an area of about 10% to about 65% of the total area of the first sub-electrode 120 . The total area of the first sub-electrode 120 refers to an area obtained by summing the area of the floating part 121f and the area of the touch sensing part 121t. That is, if the area of the touch sensing part 121t of the first sub-electrode 120 is A and the area of the floating part 121f of the first sub-electrode 120 is B, the value of B/(A+B) is may be 0.1 to 0.65.

1 and 2 , the second sub-electrode 122 includes a floating part 122f and a touch sensing part 122t. Since the second sub-electrode 122 is substantially the same as the first sub-electrode 121 , a redundant description thereof will be omitted.

The second touch electrode 130 intersects the first touch electrode 120 . The second touch electrode 130 may be separated from the first sub-intersection area S/A1 and the second sub-intersection area S/A2 . That is, the second touch electrode 130 is separated in the first sub-intersecting area S/A1, and the touch sensing unit 121t of the first sub-electrode 121 in the first sub-intersecting area S/A1 is It passes between the separated second touch electrodes 130 . In addition, the second touch electrode 130 is separated in the second sub-intersecting area S/A2, and the touch sensing unit 122t of the second sub-electrode 122 in the second sub-intersecting area S/A2 is It passes between the separated second touch electrodes 130 .

The second touch electrode 130 includes a floating unit 130f and a touch sensing unit 130t. The floating part 130f of the second touch electrode 130 is electrically separated from the touch sensing part 130t. The touch sensing unit 130t of the second touch electrode 130 is electrically connected to the second routing wire 172 . In some embodiments, the floating part 130f may be electrically grounded.

The floating part 130f of the second touch electrode 130 may have a rhombus shape as shown in FIG. 1 , but the shape of the floating part 130f is not limited thereto, and the floating part 130f may have various shapes. can be formed with The touch sensing unit 130t of the second touch electrode 130 surrounds the floating unit 130f. For example, a hole is provided on each electrode surface of the second touch electrode 130 , and the floating part 130f is disposed inside the hole. In this case, the portion of the second touch electrode 130 surrounding the floating part 130f is referred to as a touch sensing part 130t.

The floating part 130f of the second touch electrode 130 has a preset area. For example, the floating part 130f may have an area of about 10% to about 65% based on the total area of the second touch electrode 130 . The total area of the second touch electrode 130 is the sum of the area of the floating part 130f and the area of the touch sensing part 130t.

The first routing wire 171 is disposed in the peripheral area (P/A) of the substrate 110 , and is electrically connected to the first touch electrode 120 . For example, the touch sensing unit 121t of the first sub-electrode 121 and the touch sensing unit 122t of the second sub-electrode 122 are connected to each other by a connection routing wire 173, respectively, and the first routing The wiring 171 is connected to the connection routing wiring 173 . The first routing wire 171 is connected to the pad portion 180 , and the first touch electrode 120 is connected to the pad portion 180 through the connection routing wire 173 and the first routing wire 171 . The second routing wire 172 is disposed in the peripheral area (P/A) of the substrate 110 , and connects the second touch electrode 130 and the pad unit 180 . For example, the second routing wire 172 is connected to the touch sensing unit 130t of the second touch electrode 130 .

The pad unit 180 is disposed in the peripheral area (P/A) of the substrate 110 , and is respectively connected to the first routing wiring 171 and the second routing wiring 173 . The pad unit 180 transmits a touch signal transmitted through the first routing wire 171 and the second routing wire 173 to an external circuit.

The overcoat layer 193 is disposed on the first touch electrode 120 and the second touch electrode 130 . For example, the over-coating layer 193 is a first touch electrode 120 , a second touch electrode 130 , a first routing wire 171 , and a second routing wire 172 . can all be covered. The overcoat layer 193 may be a transparent insulating layer.

The overcoat layer 193 includes a plurality of contact holes exposing a portion of the second touch electrode 130 . For example, as shown in FIG. 3A , the contact hole of the over-coating layer 193 exposes the touch sensing unit 130t of the second touch electrode 130 in the first sub-intersecting area S/A1, The touch sensing unit 130t of the second touch electrode 130 is exposed in the second sub-intersecting area S/A2.

The first connection electrode 141 connects the touch sensing units 130t of the second touch electrodes 130 separated in the first sub-intersecting region S/A1 to each other. The first connection electrode 141 is electrically connected to the touch sensing unit 130t of the second touch electrode 130 through a contact hole of the overcoat layer 193 . The touch sensing unit 121t of the first sub-electrode 121 passes under the first connection electrode 141 , and the first connection electrode 141 is the touch sensing unit 121t of the first sub-electrode 121 . It overlaps with some. The first connection electrode 141 may be made of a low-resistance metal to lower the overall resistance of the second touch electrode 130 . For example, the first connection electrode 141 may include molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu). ) may be composed of any one selected from the group consisting of or an alloy thereof.

The second connection electrode 142 connects the touch sensing units 130t of the second touch electrodes 130 separated in the second sub-intersecting area S/A2 to each other. Accordingly, the separated touch sensing unit 130t of the second touch electrode 130 may be connected to each other through the first connection electrode 141 and the second connection electrode 142 to function as one touch electrode. The second connection electrode 142 is electrically connected to the touch sensing unit 130t of the second touch electrode 130 through a contact hole of the overcoat layer 193 . The touch sensing unit 122t of the second sub-electrode 122 passes under the second connection electrode 142 , and the second connection electrode 142 is the touch sensing unit 122t of the second sub-electrode 122 . It overlaps with some. The second connection electrode 142 may be formed of the same material as the first connection electrode 141 , and the first connection electrode 141 and the second connection electrode 142 may be formed at once by a patterning process.

As described above, the touch panel detects a touch input by detecting a change in the mutual capacitance between the first touch electrode and the second touch electrode at the contact point when an object with static electricity, such as a finger, contacts the touch panel. do. However, when the thickness of the touch panel is reduced, a gap between the finger and the first and second touch electrodes may be reduced. In this case, the finger may generate a parasitic capacitance at a portion other than the contact point, and the parasitic capacitance may cause a retransmission phenomenon that changes the mutual capacitance at a portion other than the contact point. Accordingly, a touch signal may be generated at a portion other than the contact point, or a touch signal generated from another portion may cancel each other out with the touch signal of the contact point, so that a touch may not be recognized. The retransmission phenomenon can be solved by increasing the distance between the finger and the first and second touch electrodes, but increase the thickness of the touch panel to increase the distance between the finger and the first and second touch electrodes. Therefore, the touch panel cannot be made thin, and the touch panel cannot be applied to a flexible display device.

The touch panel 100 according to an embodiment of the present invention may have a thin thickness, and the retransmission phenomenon may not occur easily. Specifically, the floating part 121f of the first sub-electrode 121 , the floating part 122f of the second sub-electrode 122 , and the floating part 130f of the second touch electrode 130 are formed by a finger and a first touch. The parasitic capacitance between the electrodes 120 and the parasitic capacitance between the finger and the second touch electrode 130 are reduced. Capacitance is inversely proportional to the distance between two conductors facing each other and proportional to the area of the conductors. Since each floating portion of the first touch electrode 120 and the second touch electrode 130 is electrically separated from the touch sensing unit, the area of the effective electrode surfaces of the first touch electrode 120 and the second touch electrode 130 is is reduced Accordingly, the parasitic capacitance between the finger and the first touch electrode 120 and the parasitic capacitance between the finger and the second touch electrode 130 may be reduced, respectively, and the retransmission phenomenon may not occur easily. The retransmission phenomenon may be further reduced as the area of the floating part increases. For example, when the area of the floating part is about 40% of the total area of the touch electrode, the parasitic capacitance may be reduced to about 1/2 of that of the case where the floating part is not formed. As described above, the area of the floating portion 121f of the first sub-electrode 121 may have an area ratio of about 10% to 65% with respect to the total area of the first sub-electrode 121 , and the second sub-electrode 121 . The area of the floating part 122f of 122 may have an area ratio of about 10% to about 65% with respect to the total area of the second sub-electrode 122 . If the area ratio of the floating portion is less than 10%, the parasitic capacitance between the finger and the first touch electrode 120 cannot be sufficiently reduced. If the area ratio of the floating portion is greater than 65%, the area of the touch portion is excessively reduced, The touch sensitivity of the panel 100 may be reduced.

Meanwhile, as the effective electrode surface areas of the first touch electrode 120 and the second touch electrode 130 are reduced, the mutual capacitance between the first touch electrode 120 and the second touch electrode 130 may be reduced. . When the mutual capacitance is reduced, the touch sensitivity of the touch panel 100 may be reduced, so it is necessary to compensate for the decrease in the mutual capacitance by the floating unit. In the touch panel 100 according to an embodiment of the present invention, since the first touch electrode 120 is subdivided into the first sub-electrode 121 and the second sub-electrode 122 , the mutual capacitance is increased. That is, the first sub-electrode 121 intersects the second touch electrode 130 in the first sub-intersecting region S/A1 , and the second sub-electrode 122 intersects the second touch electrode 130 and the second Since they intersect at the sub intersecting area S/A2, two intersecting areas are defined in the touch pixel T/P. Accordingly, since the number of intersecting areas in the touch area T/A of the touch panel 100 is doubled, the number of overlapping portions of the connection electrode and the first touch electrode 120 is also doubled. Accordingly, a mutual capacitance between the first touch electrode 120 and the second touch electrode 130 may be increased.

In addition, since the floating part 121f of the first sub-electrode 121, the floating part 122f of the second sub-electrode 122, and the floating part 130 of the second touch electrode 130 are all made of TCO, Visibility decrease due to the floating portion does not occur. In particular, when both the floating unit and the touch sensing unit have the same TCO, there is no difference in transmittance between the floating unit and the touch sensing unit, so that when the touch panel 100 is applied to a display device, substantially uniform visibility may be maintained. .

As described above, in the touch panel 100 according to an embodiment of the present invention, the floating parasitic capacitance between the finger and the first touch electrode 120 and the parasitic capacitance between the finger and the second touch electrode 130 are reduced. It includes a first touch electrode 120 and a second touch electrode 130 having a portion. Accordingly, the retransmission phenomenon may not occur well. In addition, since the touch panel 100 includes the first touch electrode 120 subdivided into the first sub-electrode 121 and the second sub-electrode 122 , the first touch electrode 120 and the second touch electrode ( 130) increases the number of intersecting regions. Accordingly, the mutual capacitance may be increased, and the touch sensitivity of the touch panel 100 may be improved. As a result, it is possible to reduce the thickness of the touch panel 100 , and the retransmission phenomenon according to the thinning may not occur easily.

3B is a schematic cross-sectional view of a touch panel according to another embodiment of the present invention. Compared to the touch panel 100 shown in FIG. 3A , the touch panel 300b of FIG. 3B has a first over-coating layer 393 and a second sub-intersection area S/A1 disposed in the first sub-intersection area S/A1. It is the same as the touch panel 100 shown in FIG. 3A except that the second over-coating layer 394 disposed on S/A2 is included. Therefore, redundant description is omitted.

The first over-coating layer 393 is disposed in the first sub-intersecting area S/A1 . The first over-coating layer 393 covers the touch sensing unit 121t of the first sub-electrode 121 passing through the first sub-intersecting area S/A1, and in the first sub-intersecting area S/A1 A portion of the touch sensing unit 130t of the separated second touch electrode 130 is covered.

The second over-coating layer 394 is disposed in the second sub-intersecting area S/A2 . The second over-coating layer 394 covers the touch sensing part 122t of the second sub-electrode 122 passing through the second sub-intersecting area S/A2, and in the second sub-intersecting area S/A2. A portion of the touch sensing unit 130t of the separated second touch electrode 130 is covered.

The first overcoat layer 393 and the second overcoat layer 394 may be formed at once by a patterning process. By forming an insulating layer to cover the substrate 110 including the first touch electrode 120 and the second touch electrode 130 and patterning the insulating layer, the first over-coating layer 393 and the second over-coating layer ( 394) can be formed.

The first connection electrode 141 is disposed on the first over-coating layer 393 , and extends along an outer surface of the first over-coating layer 393 to be separated from the first sub-intersecting region S/A1 . It is connected to the touch sensing unit 130t of the second touch electrode 130 . The second connection electrode 142 is disposed on the second over-coating layer 394 , and extends along the outer surface of the second over-coating layer 394 for a second touch separated from the second sub-intersecting area S/A2 . It is connected to the touch sensing unit 130t of the electrode 130 .

The touch panel 300b according to another embodiment of the present invention has a thin thickness, and the retransmission phenomenon may not occur easily. In addition, since the overcoat layer is formed only in the first sub-intersecting area S/A1 and the second sub-intersecting area S/A2, when the touch panel 300b is attached to the lower substrate of the display device, the touch panel 300b touches the lower substrate. The cell-gap between the panels 300b may be reduced, and as the cell-gap between the touch panel 300b and the lower substrate of the display device is reduced, the image quality of the display device may be improved.

4 is a schematic plan view of a touch pixel of a touch panel according to another embodiment of the present invention. In the touch pixel T/P of the touch panel 400 illustrated in FIG. 4 , the second touch electrode 430 includes the third sub-electrode 431 and the fourth sub-electrode 432 , and the third sub-intersection The touch panel shown in FIG. 2 except that the third connection electrode 443 is disposed in the area S/A3 and the fourth connection electrode 444 is disposed in the fourth sub-intersection area S/A4 Since it is the same as the touch pixel T/P of (100), a redundant description thereof will be omitted. Although the area of the touch pixel T/P shown in FIG. 4 is wider than the area of the touch pixel T/P shown in FIG. 2 in FIG. 4 , this is illustrated for convenience of description, and the actual touch panel 400 ) of the touch pixel T/P is substantially the same as the area of the touch pixel T/P illustrated in FIG. 2 .

The third sub-electrode 431 and the fourth sub-electrode 432 are connected to each other and function as one second touch electrode 430 . The third sub-electrode 431 and the fourth sub-electrode 432 extend in a direction parallel to each other and include electrode surfaces having the same shape.

The third sub-electrode 431 includes a floating unit 431f and a touch sensing unit 431t, and the fourth sub-electrode 432 includes a floating unit 432f and a touch sensing unit 432t. The floating part 431f of the third sub-electrode 431 is electrically separated from the touch sensing part 431t, and the floating part 432f of the fourth sub-electrode 432 is electrically separated from the touch sensing part 432t. do. The floating part 431f and the touch sensing part 431t of the third sub-electrode 431 are substantially the same as the floating part 421f and the touch sensing part 421t of the first sub-electrode 421 , and the fourth sub-electrode 431 . Since the floating part 432f and the touch sensing part 432t of the electrode 432 are substantially the same as the floating part 422f and the touch sensing part 422t of the second sub-electrode 422 , a redundant description will be omitted.

The touch sensing unit 431t of the third sub-electrode 431 is separated from each other in the first sub-intersecting region S/A1 , and the touch sensing unit 421t of the first sub-electrode 421 is in the first sub-intersecting region S/A1 . It passes between the touch sensing units 431t of the third sub-electrode 431 separated in (S/A1). The touch sensing units 431t of the third sub-electrodes 431 separated in the first sub-intersecting area S/A1 are connected to each other by the first connection electrodes 441 .

In addition, the touch sensing unit 431t of the third sub-electrode 431 is separated from each other in the second sub-intersecting area S/A2 , and the touch sensing unit 422t of the second sub-electrode 422 is connected to the second sub-intersecting area S/A2 . It passes between the touch sensing units 431t of the third sub-electrode 431 separated in the crossing area S/A2. The touch sensing unit 431t of the third sub-electrode 431 separated in the second sub-intersecting area S/A2 is connected to each other by a second connection electrode 442 .

The touch sensing unit 432t of the fourth sub-electrode 432 is separated from each other in the third sub-intersecting region S/A3 , and the touch sensing unit 421t of the first sub-electrode 421 is in the third sub-intersecting region S/A3 . It passes between the touch sensing units 432t of the fourth sub-electrode 432 separated at S/A3. The touch sensing unit 432t of the fourth sub-electrode 432 separated in the third sub-intersecting area S/A3 is connected to each other by a third connection electrode 441 .

In addition, the touch sensing unit 432t of the fourth sub-electrode 432 is separated from each other in the fourth sub-intersecting area S/A4, and the touch sensing unit 422t of the second sub-electrode 422 is connected to the fourth sub-intersecting area S/A4. It passes between the touch sensing units 432t of the fourth sub-electrode 432 separated in the crossing area S/A4. The touch sensing unit 432t of the fourth sub-electrode 432 separated in the fourth sub-intersecting area S/A4 is connected to each other by a fourth connection electrode 442 .

Since the first connection electrode 441 , the second connection electrode 442 , the third connection electrode 441 , and the fourth connection electrode 442 are all the same except for a different arrangement position, a redundant description will be omitted.

In the touch panel 400 according to another embodiment of the present invention, the first touch electrode 420 includes the first sub-electrode 421 and the second sub-electrode 422 , and the second touch electrode 430 includes Since the third sub-electrode 431 and the fourth sub-electrode 432 are included, the number of intersection regions where the first touch electrode 420 and the second touch electrode 430 intersect in the touch pixel T/P is increased. It can be increased to 4. That is, since the number of intersecting regions of the touch panel 400 is increased by four times, the mutual capacitance between the first touch electrode 420 and the second touch electrode 430 may be further increased. That is, since the reduction in mutual capacitance by the floating portion can be effectively compensated, the area of the floating portion can be increased. Accordingly, the retransmission phenomenon can be effectively improved.

5 is a schematic plan view of a touch panel according to another embodiment of the present invention. Compared to the touch panel 400 shown in FIG. 4 , the touch panel 500 shown in FIG. 5 includes the first sub-electrode 521 and the second sub-electrode 522 to each other in the touch area T/A. It is the same as the touch panel 400 shown in FIG. 4 , except that the third sub-electrode 531 and the fourth sub-electrode 532 are connected to each other in the touch area T/A. is omitted.

Referring to FIG. 5 , the first touch electrode 520 includes a connection part 523 connecting the first sub-electrode 521 and the second sub-electrode 522 to each other in the touch area T/A. The connection part 523 connects at least a portion of the electrode surfaces of the first sub-electrode 521 and at least a portion of the electrode surfaces of the second sub-electrode 522 to each other. FIG. 5 illustrates the first touch electrode 520 including two connection parts 523 for convenience of description.

Since the first sub-electrode 521 and the second sub-electrode 522 are connected to each other in the touch area T/A, the first routing wire 571 is the first sub-electrode 521 and the second sub-electrode 522 ) can be associated with any one of the Accordingly, a connection routing wire connecting the first sub-electrode 521 and the second sub-electrode 522 to each other may be omitted.

In substantially the same way as the first touch electrode 520 , the second touch electrode 530 has a connection part 533 connecting the third sub-electrode 531 and the fourth sub-electrode 532 to each other in the touch area T/A. ) is included. In this case, the second routing wire 572 may be connected to any one of the third sub-electrode 531 and the fourth sub-electrode 532 .

In the touch panel 500 according to another embodiment of the present invention, the first sub-electrode 521 and the second sub-electrode 522 are connected to each other in the touch area T/A, and the third sub-electrode 531 is And since the fourth sub-electrode 542 is connected to each other in the touch area T/A, a separate connection routing wire may be omitted. Accordingly, since the space for the arrangement of the connection routing wiring may be reduced, the peripheral area (P/A) of the touch panel 500 may be reduced, and the bezel of the touch panel 500 may be thin.

6 is a schematic plan view of a touch pixel of a touch panel according to another embodiment of the present invention. FIG. 7 is a schematic cross-sectional view of a touch panel for VII-VII' of FIG. 6 . The touch pixel T/P of the touch panel 600 shown in FIGS. 6 and 7 is a metal electrode in which the first touch electrode 620 and the second touch electrode 630 are respectively arranged in a mesh pattern. is the same as the touch pixel T/P of the touch panel 400 illustrated in FIG. 4 , and thus a redundant description thereof will be omitted.

6 and 7 , the first touch electrode 620 is disposed in a first mesh pattern, and the second touch electrode 630 is disposed in a second mesh pattern that intersects the first mesh pattern. The first touch electrode 620 disposed in the first mesh pattern and the second touch electrode 630 disposed in the second mesh pattern may each correspond to a specific shape. For example, a region defined along the periphery of the first touch electrode 620 may have a plurality of rhombus shapes, and an area defined along the periphery of the second touch electrode 630 may have a plurality of rhombic shapes. In FIG. 6 , portions of the first touch electrode 620 and the second touch electrode 630 corresponding to the rhombus shape are illustrated.

Each of the first touch electrode 620 and the second touch electrode 630 may be a metal line made of a low-resistance metal. For example, the first touch electrode 620 and the second touch electrode 630 may be formed of any one selected from the group consisting of molybdenum, aluminum, chromium, gold, titanium, nickel, neodymium, and copper or an alloy thereof. can In this case, since the resistance of the first touch electrode 620 and the second touch electrode 630 is low, the RC-delay of the touch panel 600 may be low, and since the metal has excellent flexibility, the touch panel Reference numeral 600 may be applied to a flexible display device.

7 , the first touch electrode 620 and the second touch electrode 630 are disposed on the black matrix 192 . Since the metal has high reflectivity compared to the TCO, the first mesh pattern and the second mesh pattern may be visually recognized from the outside. However, in the touch panel 600 according to another embodiment of the present invention, since the first touch electrode 620 and the second touch electrode 630 are disposed on the black matrix 192 , the first mesh pattern and the second The mesh pattern is not visually recognized from the outside, and when the touch panel 600 is applied to the display device, the visibility of the display device may not decrease.

The first touch electrode 620 includes a first sub-electrode 621 and a second sub-electrode 622 , and the first sub-electrode 621 and the second sub-electrode 622 are connected to each other. For example, the first sub-electrode 621 and the second sub-electrode 622 may be connected to each other by a connection routing wire in the peripheral area P/A of the substrate 110 .

The first sub-electrode 621 includes a floating unit 621f and a touch sensing unit 621t, and the second sub-electrode 622 includes a floating unit 622f and a touch sensing unit 622t. Since the first sub-electrode 621 and the second sub-electrode 622 are substantially the same, the floating part 621f and the touch sensing part 621t will be described with reference to the first sub-electrode 621 .

The floating part 621f of the first sub-electrode 621 is electrically separated from the touch sensing part 621t. For example, as shown in FIG. 6 , the metal electrode of the floating part 621f is separated from the metal electrode of the touch sensing part 621t. A region defined along the periphery of the floating unit 621f separated from the touch sensing unit 621t may correspond to a specific shape, and FIG. 6 illustrates a floating unit 621f corresponding to a rhombus shape.

A region defined along the periphery of the floating portion 621f of the first sub-electrode 621 has a predetermined area. For example, the area defined along the periphery of the floating part 621f may have an area of about 10% to 65% based on the area of the region defined along the periphery of the first sub-electrode 621 .

The second touch electrode 630 includes a third sub-electrode 631 and a fourth sub-electrode 632 , and the third sub-electrode 631 and the fourth sub-electrode 632 are connected to each other.

The third sub-electrode 631 includes a floating unit 631f and a touch sensing unit 631t, and the fourth sub-electrode 632 includes a floating unit 632f and a touch sensing unit 632t. The floating portion 631f and the touch sensing unit 631t of the third sub-electrode 631 are substantially the same as the floating unit 621f and the touch sensing unit 621t of the first sub-electrode 621, and the fourth sub-electrode 631t Since the floating part 632f and the touch sensing part 632t of the electrode 632 are substantially the same as the floating part 622f and the touch sensing part 622t of the second sub-electrode 622 , a redundant description will be omitted.

The touch sensing unit 631t of the third sub-electrode 631 is separated from each other in the first sub-intersection area S/A1 and the second sub-intersection area S/A2, respectively. The touch sensing unit 621t of the first sub-electrode 621 passes between the touch sensing units 631t of the third sub-electrode 631 separated in the first sub-intersecting area S/A1, and the second sub-electrode 621t The touch sensing unit 622t of the electrode 622 passes between the touch sensing units 631t of the third sub-electrode 631 separated in the second sub-intersecting area S/A2 . The touch sensing unit 631t of the third sub-electrode 631 separated from the first sub-intersecting area S/A1 and the second sub-intersecting area S/A2, respectively, includes the first connection electrode 641 and the second They are respectively connected by connecting electrodes 642 .

The touch sensing unit 632t of the fourth sub-electrode 632 is separated from each other in the third sub-intersection area S/A3 and the fourth sub-intersection area S/A4, respectively. The touch sensing unit 621t of the first sub-electrode 621 passes between the touch sensing units 632t of the fourth sub-electrode 632 separated in the third sub-intersecting area S/A3, and the second sub-electrode 621t The touch sensing unit 622t of the electrode 622 passes between the touch sensing units 632t of the fourth sub-electrode 632 separated in the fourth sub-intersecting area S/A4. The touch sensing unit 632t of the fourth sub-electrode 632 separated from the third sub-intersecting area S/A3 and the fourth sub-crossing area S/A4, respectively, includes the third connection electrode 643 and the fourth They are respectively connected by connecting electrodes 644 .

Since the first connection electrode 641 , the second connection electrode 642 , the third connection electrode 643 , and the fourth connection electrode 644 are all the same except for a different arrangement position, the first connection electrode 441 ) , and descriptions of the second connection electrode 442 , the third connection electrode 443 , and the fourth connection electrode 444 will be omitted.

The first connection electrode 441 connects the metal lines of the third sub-electrode 631 separated in the first sub-crossing region S/A1 to each other. The first connection electrode 441 includes a plurality of metal lines. Although FIG. 6 illustrates the first connection electrode 441 including three metal lines, the number of metal lines is not limited thereto. The first connection electrode 441 may be made of the same metal as the third sub-electrode 631 . In some embodiments, the first connection electrode 441 and the third sub-electrode 631 may be formed of different metals.

7 , the first connection electrode 641 connects the touch sensing units 631t of the third sub-electrode 631 to each other through a contact hole formed in the overcoat layer 193 . In some embodiments, as shown in FIG. 3B , the over-coating layer may be disposed only in the first sub-intersection area S/A1 and the second sub-intersection area S/A2, and the first connection electrode 641 . may extend along the outer surface of the first overcoat layer disposed in the first sub-intersecting region S/A1 to connect the touch sensing units 631t of the third sub-electrode 631 to each other.

As described above, since the touch panel 600 according to another embodiment of the present invention includes a floating part, the parasitic capacitance between the finger and the first touch electrode 620 and the parasitic capacitance between the finger and the second touch electrode 630 . Each of the parasitic capacitances can be reduced. Therefore, the retransmission phenomenon may not occur easily. In addition, since the touch panel 600 includes four sub-intersecting regions in the touch pixel T/P, a mutual capacitance increased by the floating unit may be reduced. In addition, since the first touch electrode 620 and the second touch electrode 630 of the touch panel 600 each include metal lines arranged in a mesh pattern, the total resistance of the touch panel 600 may be lowered. Accordingly, the RC-delay of the touch panel 600 may be reduced, and flexibility of the touch panel 600 may be improved.

8 is a schematic plan view of a touch pixel of a touch panel according to another embodiment of the present invention. 9 is a schematic cross-sectional view of the touch panel taken along line IX-IX' of FIG. 8 . The touch panel 800 shown in FIGS. 8 and 9 has a plurality of first segment electrodes 850 and a plurality of second segment electrodes 860 compared with the touch panel 600 shown in FIGS. 6 and 7 . It is the same as the touch panel 600 shown in FIGS. 6 and 7 except that it further includes. Therefore, redundant description is omitted. Meanwhile, the first line electrode 820 illustrated in FIGS. 8 and 9 is the same as the first touch electrode 620 illustrated in FIGS. 6 and 7 , and the second line electrode 820 illustrated in FIGS. 8 and 9 is the second line electrode ( 830 is the same as the second touch electrode 630 shown in FIGS. 6 and 7 .

8 and 9 , the first segment electrode 850 is connected to the first line electrode 820 , and the second segment electrode 860 is connected to the second line electrode 830 . The first segment electrode 850 is substantially the same as that of the second segment electrode 860 except that the type of line electrode connected thereto is substantially the same. A description of 860 will be omitted.

The first segment electrode 850 overlaps one intersection of the first line electrode 820 . The first segment electrodes 850 may be disposed at substantially uniform intervals. The first segment electrode 850 may be made of TCO and has an electrode surface having a specific shape. For example, as shown in FIG. 8 , the first segment electrode 850 has a rectangular electrode surface.

The first segment electrode 850 includes a first floating segment 850f and a first touch segment 850t. The first floating segment 850f is connected to the floating portion 821f of the first sub-line electrode 821 and the floating portion 822f of the second sub-line electrode 822, respectively, and the first touch segment 850t is The touch sensing unit 821t of the first sub-line electrode 821 and the touch sensing unit 822t of the second sub-line electrode 822 are respectively connected.

The first segment electrode 850 is disposed on the first line electrode 820 . Although the first segment electrode 850 is not illustrated in FIG. 9 , the first segment electrode 850 is disposed on the first line in the same manner that the second segment electrode 860 is disposed on the second line electrode 830 . It is disposed on the electrode 820 . For example, the first floating segment 850f is disposed on the floating portion 821f of the first sub-line electrode 821 and the floating portion 822f of the second sub-line electrode 822, respectively, and the first touch The segment 850t is disposed on the touch sensing unit 821t of the first sub-line electrode 821 and the touch sensing unit 822t of the second sub-line electrode 822 , respectively.

9 , the first connection electrode 841 connects the touch sensing units 831t of the third sub-electrode 831 to each other through a contact hole formed in the overcoat layer 193 . In some embodiments, as shown in FIG. 3B , the over-coating layer may be disposed only in the first sub-intersection area S/A1 and the second sub-intersection area S/A2 , and the first connection electrode 841 . may extend along the outer surface of the first overcoat layer disposed in the first sub-intersecting region S/A1 to connect the touch sensing units 831t of the third sub-electrode 831 to each other.

Since the first segment electrode 850 and the second segment electrode 860 of the touch panel 800 according to still other embodiments of the present invention have electrode surfaces, the first line electrode 820 and the second line electrode The effective capacitance of 830 is increased. Accordingly, the touch sensitivity of the touch panel 800 may be improved. Also, the first segment electrode 850 and the second segment electrode 860 are disposed on both the floating part and the touch sensing part. That is, the first segment electrode 850 and the second segment electrode 860 are uniformly disposed on the touch area of the touch panel 800 . Accordingly, when the touch panel 800 is applied to a display device, a decrease in visibility due to the floating part may not occur. Meanwhile, since the first line electrode 820 and the second line electrode 830 each include a floating part, parasitic capacitance between the finger and the first line electrode 820 and parasitic capacitance between the finger and the second line electrode 830 . The capacitance can each be reduced. Accordingly, the retransmission phenomenon may be improved. In addition, since the number of sub-intersecting regions in the touch pixel T/P of the touch panel 800 is increased, a reduction in mutual capacitance by the floating unit may be compensated.

10 is a schematic cross-sectional view of a touch panel integrated organic light emitting display device according to an exemplary embodiment. Since the touch panel 800 included in the touch panel integrated organic light emitting display device 1000 illustrated in FIG. 10 is the same as the touch panel 800 illustrated in FIGS. 8 and 9 , a redundant description thereof will be omitted. In FIG. 10 , only the first sub-line electrode 821 and the first segment electrode 850 disposed on the first sub-line electrode 821 are illustrated for convenience of description. Referring to FIG. 10 , the touch panel integrated organic light emitting display device 1000 includes a lower substrate 1001 , a thin film transistor 1002 , an organic light emitting diode 1003 , and a touch panel 800 .

The lower substrate 1001 supports various components of the touch panel integrated organic light emitting display device 1000 . The lower substrate 1001 may be a glass substrate or a plastic substrate. In some embodiments, the lower substrate 1001 may be a flexible substrate having flexibility.

The thin film transistor 1002 is disposed on the lower substrate 1001 . The thin film transistor 1002 is connected to the organic light emitting diode 1003 to turn the organic light emitting diode 1003 on or off.

The organic light emitting device 1003 constitutes a pixel of the touch panel integrated organic light emitting display device 1000 and includes a cathode, an anode, and an organic light emitting layer interposed between the cathode and the anode. The organic light emitting device 1003 emits light of a specific wavelength. For example, the organic light emitting layer may emit any one of red, green, blue, and white light.

The bank layer 1004 separates the organic light emitting devices 1003 from each other and is disposed between adjacent display organic light emitting devices 1003 .

The color filter layer 191 is disposed under the upper substrate 110 and includes a red color filter, a green color filter, and a blue color filter. The organic light emitting diode 1003 may display a specific color through the color filter layer. In some embodiments, the color filter layer 191 may be omitted. For example, the organic light emitting diode 1003 may individually emit red, green, and blue light, and in this case, the color filter layer 191 may be omitted.

The black matrix 192 is disposed on the color filter layer 191 of the upper substrate 110 , and is disposed to correspond to the bank layer 1004 . If the color filter layer 191 is omitted, the black matrix 192 may be disposed under the upper substrate 110 . The black matrix 192 prevents light emitted from the organic light emitting devices 1003 from mixing with each other.

The first line electrode and the second line electrode are respectively disposed under the black matrix 192 . That is, the first sub-line electrode 821 , the second sub-line electrode, the third sub-line electrode, and the fourth sub-line electrode are all disposed under the black matrix 192 . Therefore, when looking down at the touch panel integrated organic light emitting display device 1000 from the upper substrate 110 , the first sub-line electrode 821 , the second sub-line electrode, the third sub-line electrode, and the fourth sub-line electrode are not acknowledged from the outside. Accordingly, the moiré phenomenon in which the first mesh pattern and the second mesh pattern are visually recognized from the outside does not occur.

The first segment electrode 850 is disposed on the first line electrode, and the second segment electrode is disposed on the second line electrode. Since the first segment electrode 850 and the second segment electrode are made of TCO, the light generated from the organic light emitting diode 1003 is not blocked, and visibility is deteriorated by the first segment electrode 850 and the second segment electrode. doesn't happen

In the touch panel integrated organic light emitting display device 1000 according to an embodiment of the present invention, the retransmission phenomenon does not easily occur even when the touch panel 800 is thin, so that the touch panel integrated display device 1000 can be reduced in thickness. do. Meanwhile, since the touch panel 800 has high flexibility due to the first line electrode and the second line electrode, the touch panel integrated organic light emitting display device 1000 may be used as a flexible display device.

11 is a schematic cross-sectional view of a touch panel integrated organic light emitting display device according to another exemplary embodiment. The touch panel integrated organic light emitting display device 1100 shown in FIG. 11 does not include the black matrix 192 and the color filter layer 191 as compared to the touch panel integrated organic light emitting display device 1000 shown in FIG. 10 . , the same as the touch panel integrated organic light emitting display device 1000 shown in FIG. 10 except that the polarizer 1105 is included. Therefore, redundant description is omitted.

Referring to FIG. 11 , the polarizing plate 1101 may be disposed under the upper substrate 110 and generated from the first sub-line electrode 821 , the second sub-line electrode, the third sub-line electrode, and the fourth sub-line electrode. The external light reflection phenomenon can be suppressed.

The first sub-line electrode 821 , the second sub-line electrode, the third sub-line electrode, and the fourth sub-line electrode are disposed to overlap the bank layer 1004 . Since light from the organic light emitting diode 1003 is not generated in the portion where the bank layer 1004 is disposed, the first sub-line electrode 821 , the second sub-line electrode, the third sub-line electrode, and the fourth sub-line electrode Visibility of the touch panel integrated organic light emitting display device 1100 may not be reduced. In some embodiments, the bank layer 1004 may be a black bank layer with low external light reflectance. In this case, the first sub-line electrode 821 , the second sub-line electrode, the third sub-line electrode, and the fourth sub-line electrode may be hardly visually recognized from the outside by the black bank layer, and the touch panel integrated organic light emitting display Visibility of the device 1100 may be further improved.

Since the black matrix 192 and the color filter layer 191 are omitted in the touch panel integrated organic light emitting display device 1100 according to another embodiment of the present invention, the touch panel integrated organic light emitting display device 1100 may have a thinner thickness. Also, the flexibility of the touch panel integrated organic light emitting display device 1100 may be further improved.

Although the embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made within the scope without departing from the technical spirit of the present invention. . Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100, 300b, 400, 500, 600, 800: touch panel
110: substrate
120, 420, 520, 620: first touch electrode
121, 421, 521, 621: first sub-electrode
121t, 421t, 521t, 621t: touch sensing unit of the first sub-electrode
121f, 421f, 521f, and 621f: floating portion of the first sub-electrode
122, 422, 522, 622: second sub-electrode
122t, 422t, 522t, 622t: touch sensing unit of the second sub-electrode
122f, 422f, 522f, and 622f: floating portion of the second sub-electrode
130, 430, 530, 630: second touch electrode
130t: touch sensing unit of the second touch electrode
130f: Floating part of the second touch electrode
141, 441, 541, 641, 841: first connection electrode
142, 442, 542, 642, 842: second connection electrode
171 571: first routing wire
172 572: second routing wire
173: connection routing wiring
180: pad part
191: color filter layer
192: Black Matrix
193: over coating layer
393: first overcoat layer
394: second overcoat layer
431, 531, 631: third sub-electrode
431t, 531t, 631t: touch sensing unit of the third sub-electrode
431f, 531f, 631f: floating portion of the third sub-electrode
432, 532, 632: fourth sub-electrode
432t, 532t, 632t: touch sensing unit of the fourth sub-electrode
432f, 532f, 632f: floating portion of the fourth sub-electrode
443, 543, 643, 843: third connecting electrode
444, 544, 644, 844: fourth connection electrode
523: connection part of the first touch electrode
533: connection part of the second touch electrode
820: first line electrode
821: first sub-line electrode
821t: touch sensing unit of the first sub-line electrode
821f: Floating portion of the first sub-line electrode
822: second sub-line electrode
822t: touch sensing unit of the second sub-line electrode
822f: Floating portion of the second sub-line electrode
830: second line electrode
831: third sub-line electrode
831t: touch sensing unit of the third sub-line electrode
831f: Floating part of the third sub-line electrode
832: fourth sub-line electrode
832t: touch sensing unit of the fourth sub-line electrode
832f: Floating portion of the fourth sub-line electrode
850: first segment electrode
850t: first touch segment
850f: first floating segment
860: second segment electrode
860t: second touch segment
860f: second floating segment
1000, 1100: touch panel integrated organic light emitting display device
1001: lower substrate
1002: thin film transistor
1003: organic light emitting device
1004: bank layer
1105: polarizer

Claims (19)

Board;
a first touch electrode disposed on the substrate and including a first sub-electrode extending in a first direction and a second sub-electrode connected to the first sub-electrode;
A second touch that intersects the first sub-electrode in a first sub-intersection region, crosses the second sub-electrode in a second sub-intersection region, and is separated from each other in the first sub-intersection region and the second sub-intersection region electrode;
a first connection electrode connecting the second touch electrodes separated in the first sub-intersecting region to each other; and
and a second connection electrode connecting the second touch electrodes separated in the second sub-intersection region to each other,
The second touch electrode may be connected to a third sub-electrode that crosses the first sub-electrode in the first sub-intersection region and crosses the second sub-electrode in the second sub-intersection region, and the third sub-electrode a fourth sub-electrode crossing the first sub-electrode in a third sub-intersection region and crossing the second sub-electrode in a fourth sub-intersection region;
the third sub-electrode is separated from each of the first sub-intersection region and the second sub-intersection region, and the fourth sub-electrode is separated from the third sub-intersection region and the fourth sub-intersection region, respectively;
the first sub-electrode and the second sub-electrode are connected to each other in the touch area through a first connection portion extending in a direction perpendicular to the first direction;
the third sub-electrode and the fourth sub-electrode are connected to each other in the touch area through a second connection part extending in the first direction;
wherein the first sub-electrode and the second sub-electrode include a touch sensing unit and a floating unit electrically isolated from the touch sensing unit, respectively. According to claim 1,
The third sub-electrode and the fourth sub-electrode each include a touch sensing unit and a floating unit electrically separated from the touch sensing unit. 3. The method of claim 2,
a third connection electrode connecting the fourth sub-electrodes separated in the third sub-intersecting region to each other; and
a fourth connection electrode connecting the fourth sub-electrodes separated in the fourth sub-intersecting region to each other;
the first connection electrode connects the third sub-electrodes separated in the first sub-intersecting region to each other;
The second connection electrode connects the third sub-electrode separated in the second sub-intersecting region to each other. 4. The method of claim 3,
The first sub-electrode, the second sub-electrode, the third sub-electrode, and the fourth sub-electrode are each a transparent electrode made of a transparent conductive oxide (TCO). 4. The method of claim 3,
The first sub-electrode, the second sub-electrode, the third sub-electrode, and the fourth sub-electrode are each a metal line disposed in a mesh pattern, the touch panel. According to claim 1,
The floating portion of the first sub-electrode has an area ratio of 10% to 65% based on the total area of the first sub-electrode,
and the floating portion of the second sub-electrode has an area ratio of 10% to 65% based on the total area of the second sub-electrode. According to claim 1,
An overcoat layer covering the first touch electrode and the second touch electrode,
the overcoat layer includes a plurality of contact holes exposing the second touch electrode in the first sub-intersection region and the second sub-intersection region;
the first connection electrode is connected to the second touch electrode through a contact hole of the overcoat layer in the first sub-intersection region;
The second connection electrode is connected to the second touch electrode through a contact hole of the overcoat layer in the second sub-intersecting region. According to claim 1,
a first overcoat layer disposed on the first sub-electrode in the first sub-intersecting region; and
a second overcoat layer disposed on the second sub-electrode in the second sub-intersecting region;
the first connection electrode is disposed on the first overcoat layer, extends along an outer surface where the first overcoat layer ends, and is connected to the second touch electrode;
The second connection electrode is disposed on the second overcoat layer, and extends along an outer surface where the second overcoat layer ends and is connected to the second touch electrode. According to claim 1,
a connection routing wire disposed in a peripheral area on the substrate surrounding a touch area on the substrate on which the first touch electrode and the second touch electrode are disposed and connecting the first sub-electrode and the second sub-electrode to each other;
a first routing wire disposed in the peripheral area and connected to the connection routing wire;
a second routing wire disposed in the peripheral area and connected to the second touch electrode; and
It is disposed in the peripheral area, the first routing wire and the second routing wire and characterized in that it further comprises a pad portion respectively connected to, the touch panel. delete Board;
a first line electrode disposed on the substrate in a first mesh pattern and including a first sub-line electrode and a second sub-line electrode connected to the first sub-line electrode;
a plurality of first segment electrodes connected to the first line electrode;
disposed on the substrate in a second mesh pattern, intersecting the first sub-line electrode in a first sub-intersecting region, intersecting the second sub-line electrode in a second sub-intersecting region, and in the first sub-intersecting region and a second line electrode separated from each other in the second sub-intersecting region. and
a plurality of second segment electrodes connected to the second line electrode;
a first connection electrode connecting the second line electrode separated in the first sub-intersection region; and
a second connection electrode connecting the second line electrode separated in the second sub-intersection region;
and the first sub-line electrode and the second sub-line electrode each include a touch sensing unit and a floating unit electrically separated from the touch sensing unit. 12. The method of claim 11,
The second line electrode is
a third sub-line electrode crossing the first sub-line electrode in the first sub-intersecting region and crossing the second sub-line electrode in the second sub-intersecting region; and
a fourth sub-line electrode connected to the third sub-line electrode, intersecting the first sub-line electrode and a third sub-intersecting region, and crossing the second sub-line electrode and a fourth sub-intersecting region;
the third sub-line electrode is separated from each of the first sub-intersection region and the second sub-intersection region;
the fourth sub-line electrode is separated from each of the third sub-intersection region and the fourth sub-intersection region;
The third sub-line electrode and the fourth sub-line electrode each include a touch sensing unit and a floating unit electrically separated from the touch sensing unit, respectively. 13. The method of claim 12,
a third connection electrode connecting the fourth sub-line electrode separated in the third sub-intersecting region; and
a fourth connection electrode connecting the fourth sub-line electrode separated in the fourth sub-intersecting region;
the first connection electrode connects the third sub-line electrode separated in the first sub-intersection region;
The second connection electrode connects the third sub-line electrode separated in the second sub-intersecting region. 14. The method of claim 13,
The plurality of first segment electrodes may include a first touch segment connected to the touch sensing unit of the first sub-line electrode and the touch sensing unit of the second sub-line electrode, respectively, and the floating unit of the first sub-line electrode; a first floating segment connected to the floating portion of the second sub-line electrode, respectively;
The plurality of second segment electrodes may include a second touch segment connected to the touch sensing unit of the third sub-line electrode and the touch sensing unit of the fourth sub-line electrode, respectively, and the floating unit of the third sub-line electrode; and second floating segments respectively connected to the floating portions of the fourth sub-line electrodes. 12. The method of claim 11,
Each of the first line electrode and the second line electrode includes a low-resistance metal,
Each of the plurality of first segment electrodes and the plurality of second segment electrodes comprises a transparent conductive oxide, a touch panel. lower substrate;
a thin film transistor disposed on the lower substrate;
an organic light emitting device connected to the thin film transistor;
an upper substrate facing the lower substrate;
a first touch electrode disposed under the upper substrate and including a first sub-electrode extending in a first direction and a second sub-electrode connected to the first sub-electrode;
A second touch that intersects the first sub-electrode in a first sub-intersection region, crosses the second sub-electrode in a second sub-intersection region, and is separated from each other in the first sub-intersection region and the second sub-intersection region electrode;
a first connection electrode connecting the second touch electrodes separated in the first sub-intersecting region to each other; and
and a second connection electrode connecting the second touch electrodes separated in the second sub-intersection region to each other,
The second touch electrode may be connected to a third sub-electrode that crosses the first sub-electrode in the first sub-intersection region and crosses the second sub-electrode in the second sub-intersection region, and the third sub-electrode a fourth sub-electrode crossing the first sub-electrode in a third sub-intersection region and crossing the second sub-electrode in a fourth sub-intersection region;
the third sub-electrode is separated from each of the first sub-intersection region and the second sub-intersection region, and the fourth sub-electrode is separated from the third sub-intersection region and the fourth sub-intersection region, respectively;
the first sub-electrode and the second sub-electrode are connected to each other in the touch area through a first connection portion extending in a direction perpendicular to the first direction;
the third sub-electrode and the fourth sub-electrode are connected to each other in the touch area through a second connection part extending in the first direction;
The first sub-electrode and the second sub-electrode each include a touch sensing unit and a floating unit electrically separated from the touch sensing unit. 17. The method of claim 16,
a color filter layer disposed under the upper substrate; and
and a black matrix disposed under the color filter layer. 17. The method of claim 16,
The touch panel integrated organic light emitting display device further comprising a polarizing plate disposed on the upper substrate. 17. The method of claim 16,
The first touch electrode includes a first line electrode disposed in a first mesh pattern and a plurality of first segment electrodes connected to the first line electrode,
The second touch electrode comprises a second line electrode disposed in a second mesh pattern and a plurality of second segment electrodes connected to the second line electrode.

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