KR102173545B1 - Organic light emitting display device having touch structure of in-cell type - Google Patents

Abstract

The present invention includes: a first substrate on which an organic light emitting diode including two or more transistors, an anode electrode, an organic layer, and a cathode electrode is formed in each pixel area; An encapsulation layer formed on the first substrate; A plurality of touch electrodes formed on the encapsulation layer; A resin layer formed to cover a plurality of touch electrodes; And a second substrate disposed on a resin layer and on which a plurality of color filters and a black matrix are formed. The present invention provides an organic light emitting display device having an in-cell type touch structure.

Description

Organic light-emitting display device with in-cell type touch structure {ORGANIC LIGHT EMITTING DISPLAY DEVICE HAVING TOUCH STRUCTURE OF IN-CELL TYPE}

The present embodiments relate to an organic light emitting display device having an in-cell type touch structure.

Conventionally, in the touch structure applied to an organic light emitting display device, after separately forming a touch screen panel (TSP) using glass and/or a film, the touch screen panel is attached to the organic light emitting display panel. By attaching it, an organic light emitting display device having a touch structure is made.

When such an organic light emitting display device has the conventional touch structure described above, since a touch sensor (ie, a touch electrode) is attached to the outside of the organic light emitting display panel, separate glass and tempered glass or a protective film must be used.

In addition, there is a problem in that the process of attaching the touch screen panel to the organic light emitting display panel is complicated and the material cost for attaching is high.

In addition, when the organic light emitting display device has a conventional touch structure, since the touch screen panel is thick, there are many restrictions on the design and design of the organic light emitting display device, and there are significant restrictions on manufacturing a flexible organic light emitting display device. Works.

In addition, when the organic light emitting display device has a conventional touch structure, since the touch electrodes are formed in the form of a metal mesh on the upper plate of the color filter, an additional process for contacting the pad portion when bonding with the lower plate of the thin film transistor (TFT) There is a more necessary and difficult problem with this.

The present embodiments provide an organic light emitting display device having an in-cell type touch structure.

The present embodiments provide an organic light-emitting display device having a touch structure that simplifies a manufacturing process and enables a flexible product to be manufactured.

The present embodiments provide an organic light emitting display device having a touch structure capable of reducing luminance and preventing visibility and increasing an aperture ratio.

The present embodiments provide an organic light emitting display device capable of preventing unnecessary parasitic capacitors from being formed during touch driving and touch sensing.

The present embodiments provide an organic light emitting display device that performs touch driving capable of accurate touch sensing.

In order to achieve the above object, an embodiment includes: a first substrate on which an organic light emitting diode including two or more transistors, an anode electrode, an organic layer, and a cathode electrode is formed for each pixel area; An encapsulation layer formed on the first substrate; A plurality of touch electrodes formed on the encapsulation layer; A resin layer formed to cover the plurality of touch electrodes; And a second substrate disposed on the resin layer and on which a plurality of color filters and black matrices are formed. It provides an organic light emitting display device having an in-cell type touch structure.

The plurality of touch electrodes may be formed in the pattern area of the black matrix.

In another embodiment, a plurality of data lines and a plurality of gate lines are formed, and a plurality of touch electrodes are formed on an organic light emitting display panel; A data driver driving the plurality of data lines; A gate driver driving the plurality of gate lines; And a touch integrated circuit for outputting a touch driving signal applied to the plurality of touch electrodes, wherein when the driving mode is a touch mode, when the touch driving signal is applied to the touch electrodes, the organic light emitting display panel An organic light emitting display device having an in-cell type touch structure, wherein a signal identical to or corresponding to the touch driving signal is further applied to at least one of several types of conductors.

A conductor to which a signal identical to or corresponding to the touch driving signal is further applied is, while the touch driving signal is being applied to the touch electrode, when a signal identical to or corresponding to the touch driving signal is not applied, the touch electrode It may be a conductor that generates a hyperparasitic capacitor.

A conductor to which a signal identical to or corresponding to the touch driving signal is further applied may include at least one of an electrode of an organic light emitting diode, a data line, a gate line, and a driving voltage line.

The present embodiments may provide an organic light emitting display device having an in-cell type touch structure.

The present embodiments can provide an organic light emitting display device having a touch structure that simplifies a manufacturing process and enables a flexible product to be manufactured.

The present embodiments can provide an organic light emitting display device having a touch structure capable of reducing luminance and preventing visibility and increasing an aperture ratio.

The present embodiments may provide an organic light emitting display device capable of preventing unnecessary parasitic capacitors from being formed during touch driving and touch sensing.

The present embodiments may provide an organic light emitting display device that performs touch driving capable of accurate touch sensing.

1 is a schematic system configuration diagram of an organic light emitting display device having an in-cell type touch structure according to embodiments.
2 is a schematic cross-sectional view of an organic light emitting display panel with a built-in touch screen panel according to embodiments.
3 is an exemplary view of a structure of a touch electrode of a touch screen panel embedded in an organic light emitting display panel in an organic light emitting display device having an in-cell type touch structure according to an exemplary embodiment.
4 is a plan view of a touch screen panel embedded in the organic light emitting display panel in an organic light emitting display device having an in-cell type touch structure according to an exemplary embodiment.
5 to 7 are plan views illustrating a process of forming a touch screen panel embedded in the organic light emitting display panel in an organic light emitting display device having an in-cell type touch structure according to an exemplary embodiment.
8 is a cross-sectional view of an organic light emitting display panel in which a touch screen panel is embedded in an organic light emitting display device having an in-cell type touch structure according to an exemplary embodiment.
9 is a cross-sectional view illustrating a partial process of forming an organic light emitting display panel in which a touch screen panel is embedded in an organic light emitting display device having an in-cell type touch structure according to an exemplary embodiment.
10 is a plan view of a touch screen panel embedded in the organic light emitting display panel in an organic light emitting display device having an in-cell type touch structure according to another exemplary embodiment.
11 is a cross-sectional view of an organic light emitting display panel in which a touch screen panel is embedded in an organic light emitting display device having an in-cell type touch structure according to another exemplary embodiment.
12 is a diagram illustrating a touch sensing method of an organic light emitting display device having an in-cell type touch structure according to another exemplary embodiment.
13 is a diagram illustrating a concept of touch driving and touch sensing of an organic light emitting display device having an in-cell type touch structure according to another exemplary embodiment.
14 is a diagram for explaining a touch sensing principle of an organic light emitting display device having an in-cell type touch structure according to another exemplary embodiment.
FIG. 15 illustrates a parasite capacitor formed between a touch electrode and an electrode of the organic light emitting diode (eg, a cathode electrode) in an organic light emitting display device having an in-cell type touch structure according to another embodiment, and A diagram showing a phenomenon in which touch sensing sensitivity is deteriorated.
16 is a method for preventing formation of a parasitic capacitor between a touch electrode and an electrode of an organic light emitting diode (eg, a cathode electrode) in an organic light emitting display device having an in-cell type touch structure according to another embodiment It is a view showing.
17 illustrates various parasite capacitors formed on an organic light emitting display panel in which a touch screen panel is embedded in an organic light emitting display device having an in-cell type touch structure according to another embodiment, and touch sensing accordingly It is a diagram showing a phenomenon in which the sensitivity decreases.
18 illustrates a method of preventing formation of various parasite capacitors on an organic light emitting display panel in which a touch screen panel is embedded in an organic light emitting display device having an in-cell type touch structure according to another embodiment. It is a figure shown.
19 and 20 are exemplary diagrams illustrating a method of preventing the formation of various parasite capacitors on an organic light emitting display panel having a touch screen panel embedded therein under a 2T1C pixel structure.
21 and 22 are diagrams illustrating a method of preventing the formation of various parasite capacitors on an organic light emitting display panel in which a touch screen panel is embedded under a 4T2C pixel structure.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to elements of each drawing, the same elements may have the same numerals as possible even if they are indicated on different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof may be omitted.

In addition, in describing the constituent elements of the present invention, terms such as first, second, A, B, (a), (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, order, or number of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to that other component, but other components between each component It is to be understood that is "interposed", or that each component may be "connected", "coupled" or "connected" through other components.

1 is a schematic system configuration diagram of an organic light emitting display device 100 having an In-Cell type touch structure according to embodiments.

Referring to FIG. 1, an organic light emitting display device 100 having an in-cell type touch structure according to embodiments includes an organic light emitting display panel 110, a data driver 120, a gate driver 130, and a timing controller. 140, at least one touch integrated circuit 150 and a power integrated circuit 160, and the like.

In the organic light emitting display panel 110, a plurality of data lines (DL) and a plurality of gate lines (GL) are formed in a direction crossing each other, and one data line and at least one gate line A pixel (P: Pixel) is formed at each point where they cross each other.

Each pixel P of the organic light emitting display panel 110 includes one organic light emitting diode (OLED), two or more transistors, and one or more capacitors, depending on the pixel design method. Is formed.

The data driver 120 drives a plurality of data lines DL.

The gate driver 130 sequentially drives a plurality of gate lines GL.

The timing controller 140 outputs image data to the data driver 120, and outputs control signals such as a data control signal (DCS) and a gate control signal (GCS), and the data driver 120 ) And the gate driver 130 are controlled.

Meanwhile, the organic light emitting display device 100 and the organic light emitting display panel 110 having an in-cell type touch structure according to embodiments may operate in a display mode and a touch mode.

For example, one frame section is divided into a display mode section and a touch mode section. In the display mode section, the organic light emitting display device 100 and the organic light emitting display panel 110 operate in a display mode, and in the touch mode section, The light emitting display device 100 and the organic light emitting display panel 110 operate in a touch mode.

In this way, in the touch mode section, in order for the organic light-emitting display device 100 and the organic light-emitting display panel 110 to operate in a touch mode, the organic light-emitting display device 100 is a touch screen panel for touch driving and touch sensing. TSP: Touch Screen Panel).

Since the organic light-emitting display device 100 according to the embodiments has an in-cell type touch structure, the organic light-emitting display panel 110 includes a touch screen panel (TSP) for touch driving and touch sensing.

In this way, since the organic light-emitting display panel 110 includes a touch screen panel (TSP), a plurality of touch electrodes are formed in the organic light-emitting display panel 110 for touch driving and touch sensing. have.

Here, the plurality of touch electrodes may have different formation structures and locations according to a touch method (eg, a self-capacitance method, a mutual capacitance method, etc.).

2 is a schematic cross-sectional view of an organic light emitting display panel 110 in which the touch screen panel 212 is embedded according to embodiments.

Referring to FIG. 2, the organic light emitting display panel 110 according to the exemplary embodiments is, in terms of a layer stack structure, for each pixel area on the first substrate 200 and the first substrate 200. A transistor formation layer 202 on which two or more transistors are formed, a first electrode formation layer 204 in which a first electrode (eg, an anode electrode) of an organic light emitting diode (OLED) is formed on the transistor formation layer 202 in each pixel region, An organic layer 206 formed on the first electrode formation layer 204 and emitting light, and an organic light emitting diode corresponding to a first electrode (eg, an anode electrode) of an organic light emitting diode (OLED) on the organic layer 260 On the second electrode formation layer 208 on which the second electrode (for example, a cathode electrode) of (OLED) is formed, an encapsulation layer 210 formed on the second electrode formation layer 208, and the encapsulation layer 210 A touch electrode forming layer 212 having a plurality of touch electrodes formed thereon, a resin layer 214 formed to cover a plurality of touch electrodes formed on the touch electrode forming layer 212, and a resin layer 214 ) A color conversion layer 216 having a plurality of color filters formed thereon, a second substrate 218 formed on the color conversion layer 216, an adhesive layer 220 formed on the second substrate 218, and an adhesive layer It includes a cover 222 and the like located on 220.

Here, the organic light emitting diode (OLED) includes a first electrode formed on the first electrode forming layer 204, an organic layer 206, and a second electrode formed on the second electrode forming layer 208. In the following, for convenience of description, the first electrode formed on the first electrode forming layer 204 is referred to as an anode electrode, and the second electrode formed on the second electrode forming layer 208 is referred to as a cathode electrode.

In the transistor formation layer 202, two or more transistors may be formed for each pixel region. Two or more transistors receive a driving voltage VDD from a driving voltage line and serve as an anode electrode of the organic light emitting diode OLED. A driving transistor that drives an organic light emitting diode (OLED) by supplying a driving current is connected between the data line and the gate node of the driving transistor, and is controlled by a scan signal applied to the gate line, and is turned on ( It includes a switching transistor that turns on and applies the voltage supplied from the data line to the gate node of the driving transistor.

In addition, a light emission control transistor for controlling the light emission of the organic light emitting diode (OLED) may be further formed in the transistor formation layer 202 between the driving transistor and the organic light emitting diode (OLED) among two or more transistors in each pixel region. . Here, the light emission control transistor may be turned on and off according to the light emission operation of the organic light emitting diode (OLED) when the driving mode is the display mode, but is turned off when the driving mode is the touch mode, so that the organic light emitting diode (OLED) The furnace can be controlled so that no current flows.

In addition, on the transistor formation layer 202, at least one capacitor such as a storage capacitor that maintains a voltage for one frame is formed.

The source node or drain node of the driving transistor formed on the transistor formation layer 202 is connected to an anode electrode of an organic light emitting diode (OLED). In this case, a base voltage VSS is applied to the cathode electrode of the organic light emitting diode OLED.

A black matrix may be formed between a plurality of color filters (CFs) formed on the color conversion layer 216.

In the organic light emitting display device 100 having an in-cell type touch structure according to the present embodiments, the touch electrode formation layer 212 is positioned on the encapsulation layer 210. That is, a plurality of touch electrodes are formed on the encapsulation layer 210.

In the organic light-emitting display device 100 having an in-cell type touch structure according to the present embodiments, the touch electrode forming layer 212 positioned on the encapsulation layer 210 is the organic light-emitting display panel 110 ), it acts as a touch screen panel (TSP). In the following, for convenience of description, the touch electrode forming layer 212 is referred to as a touch screen panel 212.

A plurality of touch electrodes constituting the touch screen panel 212 may have a different formation method according to a touch method.

The organic light emitting display device 100 having an in-cell type touch structure according to the present exemplary embodiments basically includes the presence or absence of a touch and touch coordinates based on a change in capacitance according to the presence or absence of a pointer such as a finger. It uses a capacitance touch method that detects the like and performs touch sensing.

Such a capacitance touch method can be divided into, for example, a mutual capacitance touch method and a self capacitance touch method.

In the mutual capacitance touch method, which is a type of capacitance touch method, a plurality of touch electrodes are composed of a plurality of horizontal electrodes and a plurality of vertical electrodes, so that one of the horizontal electrodes and the vertical electrodes receives a touch drive signal ( It becomes a Tx electrode (also referred to as a “driving electrode”) to which the driving voltage) is applied, and becomes an Rx electrode (also referred to as a “sensing electrode”) that forms a capacitance with the Tx electrode, and Tx according to the presence or absence of a pointer such as a finger or a pen. This is a touch method that detects touch presence and touch coordinates based on a change in capacitance (mutual capacitance) between an electrode and an Rx electrode.

The self-capacitance touch method, which is another type of capacitance touch method, forms a capacitance (self capacitance) between a plurality of touch electrodes and a pointer such as a finger or a pen, and touch electrodes and points according to the presence or absence of a pointer such as a finger or a pen. It is a method of measuring the capacitance value of the liver and detecting the presence or absence of touch and touch coordinates based on this. In this self-capacitance touch method, unlike the mutual capacitance touch method, a driving voltage (touch driving signal) is applied through each touch electrode and sensed at the same time. Therefore, in the self-capacitance touch method, there is no distinction between the Tx electrode and the Rx electrode.

Below, when the mutual capacitance touch method is used, the organic light emitting display device 100 having an In-Cell type touch structure is described as an embodiment. When the self-capacitance touch method is used, An organic light-emitting display device 100 having an In-Cell type touch structure will be described as another embodiment.

First, an organic light-emitting display device 100 having an in-cell type touch structure according to an exemplary embodiment will be described with reference to FIGS. 3 to 9.

3 is an exemplary view of a structure of a touch electrode of a touch screen panel 212 embedded in the organic light emitting display panel 110 in the organic light emitting display device 100 having an in-cell type touch structure according to an exemplary embodiment.

Referring to FIG. 3, a touch screen panel 212 built in the organic light emitting display panel 110 according to an exemplary embodiment includes a plurality of touch electrodes. That is, by forming a plurality of touch electrodes on the encapsulation layer 210, the touch screen panel 212 is formed.

Referring to FIG. 3, a plurality of touch electrodes constituting the touch screen panel 212 embedded in the organic light emitting display panel 110 according to an exemplary embodiment are formed on the encapsulation layer 210 in a first direction (eg, vertically). Direction), a plurality of first touch electrodes 310 spaced parallel to each other, and formed on the first touch electrode 310 in a second direction (eg, a horizontal direction) crossing the first direction, , Consisting of a plurality of second touch electrodes 320 spaced parallel to each other.

The first touch electrode 310 and the second touch electrode 320 formed on the organic light emitting display panel 110 according to an embodiment are Tx electrodes and Rx electrodes.

A point where each of the plurality of first touch electrodes 310 and the plurality of second touch electrodes 320 intersect becomes a sensor node.

In the organic light-emitting display panel 110 according to an embodiment, the first touch electrode 310 and the second touch electrode 320 may be formed in an active area 300.

For touch driving and touch sensing by a mutual capacitance touch method, the touch integrated circuit 150 sequentially applies a touch driving signal to the plurality of first touch electrodes 310, A change in capacitance in each of the second touch electrodes 320 of is sequentially detected, and based on this, a touch coordinate of a point where a point such as a finger is touched may be detected.

4 is a plan view showing in more detail the touch screen panel 212 embedded in the organic light emitting display panel 110 in the organic light emitting display device 100 having an in-cell type touch structure according to an exemplary embodiment.

Referring to FIG. 4, the touch screen panel 212 built in the organic light-emitting display panel 110 includes a plurality of first touch electrodes 310 and a plurality of second touch electrodes 320 and Rx electrodes. A plurality of routing wires 430 connected to one side and the other side of each of the plurality of second touch electrodes 320, and a plurality of first pads 410 connected to the plurality of first touch electrodes 310 corresponding to the Tx electrode. ), and a plurality of second pads 420 connected to a plurality of routing wires 430.

As shown in FIG. 2, after the transistor formation layer 202 to the encapsulation layer 21 is formed on the first substrate 200, a plurality of first touch electrodes 310 and a plurality of The second touch electrode 320 is formed.

The plurality of first touch electrodes 310 and the plurality of second touch electrodes 320 may be patterned in a printing method using, for example, a paste (Ag Paste).

In order to prevent luminance reduction and visibility of the organic light emitting display device 100 from being reduced, and to increase the aperture ratio, a plurality of first touch electrodes 310 and a plurality of the first touch electrodes 310 and a plurality of the first touch electrodes 310 and a plurality of electrodes 310 and a plurality of electrodes 310 The second touch electrode 320 of may be formed.

To this end, for example, the line widths Wte1 and Wte2 of each of the plurality of first touch electrodes 310 and the plurality of second touch electrodes 320 should be less than or equal to the width Wbm of the black matrix. In this case, the line widths Wte1 and Wte2 of each of the plurality of first touch electrodes 310 and the plurality of second touch electrodes 320 and the width Wbm of the black matrix may be determined in consideration of resolution.

Meanwhile, the plurality of first pads 410 and the plurality of second pads 420 may be connected to at least one touch integrated circuit 150. In some cases, the plurality of first pads 410 and the plurality of second pads 420 are flexible flat cables connected to a printed circuit board (PCB) on which at least one touch integrated circuit 150 is located. (FFC: Flexible Flat Cable) may be connected.

The at least one touch integrated circuit 150 applies a touch drive signal to the plurality of first touch electrodes 310 corresponding to the Tx electrodes through the plurality of first pads 410.

At least one touch integrated circuit 150, through a plurality of routing wires 430 and a plurality of second pads 420, received signals from the plurality of second touch electrodes 320 corresponding to the Rx electrode (Rx Signal) to detect a change in capacitance.

5 to 7 are diagrams illustrating a process of forming a touch screen panel 212 embedded in the organic light emitting display panel 110 in the organic light emitting display device 100 having an in-cell type touch structure according to an exemplary embodiment. It is a plan view.

Referring to FIG. 5, during the TFT (Thin Film Transistor) process, as shown in FIG. 2, after forming the encapsulation layer 210 on the first substrate 200, the active region on the encapsulation layer 210 A plurality of routing wires 430, a plurality of first pads 410, and a plurality of second pads 420 are formed in the outer region of 300.

Referring to FIG. 6, a plurality of first touch electrodes 310 may be formed on the encapsulation layer 210 in the active region 300 by a printing method.

Then, an insulating layer is deposited.

Referring to FIG. 7, a plurality of second touch electrodes 320 are formed on the deposited insulating layer.

In this way, an in-cell type touch structure of the organic light emitting display device 100 may be implemented. That is, the touch screen panel 212 may be embedded in the organic light emitting display panel 110.

Since such an in-cell type touch structure does not require a pad contact using an anisotropic conducting film (ACF), it can be very advantageous in terms of productivity.

FIG. 8 is a cross-sectional view of an organic light emitting display panel 110 in which a touch screen panel 212 is embedded in the organic light emitting display device 100 having an in-cell type touch structure according to an exemplary embodiment, and AA′ of FIG. 7 It is a cutaway cross-sectional view.

Referring to FIG. 8, in the organic light emitting display device 100 having an in-cell type touch structure according to an embodiment, the organic light emitting display panel 110 in which the touch screen panel 212 is embedded is basically It has a structure of 2.

Referring to FIG. 8, in the organic light-emitting display device 100 having an in-cell type touch structure according to an embodiment, the organic light-emitting display panel 110 in which the touch screen panel 212 is embedded has a plurality of first touches. In that the electrode 310 and the plurality of second touch electrodes 320 are formed on different layers, only the portions of the touch screen panel 212 are slightly different, but the remaining portions are the same.

Referring to FIG. 8, in the organic light emitting display device 100 having an in-cell type touch structure according to an exemplary embodiment, the organic light emitting display panel 110 in which the touch screen panel 212 is embedded is divided into two per pixel area. An encapsulation layer 210 formed on the first substrate 200 on which an organic light-emitting diode (OLED) formed of the above transistor, an anode electrode, an organic layer, and a cathode electrode is formed, and a plurality of first touches formed on the encapsulation layer 210 An electrode 310, an insulating layer 800 formed while covering the plurality of first touch electrodes 320, a plurality of second touch electrodes 320 formed on the insulating layer 800, and a plurality of second touches A resin layer 214 formed to cover the electrode 320 and a second substrate 218 positioned on the resin layer 214 and on which a plurality of color filters 810a, 810b, and 810c and a black matrix 820 are formed ), etc.

The insulating layer 800 is formed between the plurality of first touch electrodes 310 and the plurality of second touch electrodes 320, and the plurality of first touch electrodes 310 and the plurality of second touch electrodes 320 It is a layer that insulates.

Meanwhile, referring to FIG. 8, on the encapsulation layer 210, a plurality of routing wires 430 formed in contact with one side or the other side of each of the plurality of second touch electrodes 320 are further formed.

In addition, on the encapsulation layer 210, a plurality of first pads 410 connected to a plurality of first touch electrodes 310 and a plurality of second pads 420 connected to a plurality of routing wires 430 are provided. Can be further formed.

Here, the plurality of first pads 410 and the plurality of second pads 420 may be connected to at least one touch integrated circuit 150. In some cases, the plurality of first pads 410 and the plurality of second pads 420 may be connected to a printed circuit board (PCB) on which at least one touch integrated circuit 150 is located.

The plurality of first touch electrodes 310 and the plurality of second touch electrodes 320 may be formed in the pattern area of the black matrix 820.

A plurality of first touch electrodes 310 and a plurality of second touch electrodes 320 are formed in the pattern area of the black matrix 820, so that the width Wte1 of each of the plurality of first touch electrodes 310 and a plurality of The width Wte2 of each of the second touch electrodes 320 may be less than or equal to the width Wbm of the black matrix 820.

9 is a cross-sectional view showing a partial process of forming the organic light emitting display panel 110 in which the touch screen panel 212 is embedded in the organic light emitting display device 100 having an in-cell type touch structure according to an exemplary embodiment .

Referring to FIG. 9, after the encapsulation layer 210 is formed, a plurality of first touch electrodes 310 are formed on the encapsulation layer 210.

An insulating layer 800 is formed to cover the plurality of first touch electrodes 310.

A plurality of second touch electrodes 320 are formed on the insulating layer 800 in a second direction crossing the first direction in which the first touch electrodes 310 are formed.

In addition, the routing wiring 430 is formed by contacting one side and/or the other side of the plurality of second touch electrodes 320.

On that, through the resin layer 214, a plurality of color filters 810a, 810b, and 810c are formed corresponding to the pixel region, and a second substrate 218 in which the black matrix 820 is formed in the boundary region of the pixel region. Cement.

10 is a plan view of a touch screen panel 212 embedded in the organic light emitting display panel 110 in the organic light emitting display device 100 having an in-cell type touch structure according to another exemplary embodiment.

Referring to FIG. 10, in an organic light emitting display device 100 having an in-cell type touch structure according to another exemplary embodiment, a touch screen panel 212 built in the organic light emitting display panel 110 includes blocks spaced apart from each other. It is a type of electrode, and includes a plurality of touch electrodes 1000 formed all on the same layer, and a plurality of signal lines 1010 connected to each of the plurality of touch electrodes 1000.

Referring to FIG. 10, when the driving mode is a touch mode, at least one touch integrated circuit 150 sequentially applies a touch driving signal to a plurality of touch electrodes 1000 through a plurality of signal lines 1010 Perform a touch sensing process.

Meanwhile, in the organic light emitting display device 100 having an in-cell type touch structure according to another embodiment, when the driving mode is the touch mode, when a touch driving signal is applied to the plurality of touch electrodes 1000, unnecessary parasitics are applied. In order to prevent the occurrence of a parasite capacitor, a signal that is the same as or corresponding to the touch driving signal applied to the plurality of touch electrodes 1000 is at least one of several types of conductors formed on the organic light emitting display panel 110. More can be applied.

Here, the conductor to which the same or corresponding signal is further applied to the touch drive signal applied to the touch electrode 1000 is the same as or corresponding to the touch drive signal while the touch drive signal is being applied to the touch electrode 1000. When a signal is not applied, it is a conductor that generates the touch electrode 1000 and the parasitic capacitor.

When the driving mode is the touch mode, a conductor to which a signal identical or corresponding to the touch driving signal applied to the touch electrode 1000 is further applied is, for example, an electrode of an organic light emitting diode (OLED), a data line, a gate line And at least one of a driving voltage line.

11 is a cross-sectional view of an organic light emitting display panel 110 in which the touch screen panel 212 is embedded in the organic light emitting display device 100 having an in-cell type touch structure according to another exemplary embodiment.

Referring to FIG. 10, in the organic light emitting display device 100 having an in-cell type touch structure according to another embodiment, the organic light emitting display panel 110 in which the touch screen panel 212 is embedded is basically illustrated in FIG. It is the same as the structure of 2.

However, referring to FIG. 10, in the organic light emitting display device 100 having an in-cell type touch structure according to another embodiment, a plurality of touch electrodes 1000 are spaced apart from each other on the organic light emitting display panel 110. By being formed on the same layer in the form of a block, the touch screen panel 212 is built in.

12 is a diagram for describing a touch sensing method of an organic light emitting display device 100 having an in-cell type touch structure according to another exemplary embodiment.

Referring to FIG. 12, the organic light emitting display device 100 having an in-cell type touch structure according to another exemplary embodiment basically performs touch driving and touch sensing by a self-capacitance touch method.

Referring to FIG. 12, the self-capacitance touch method is a method of detecting touch presence and touch coordinates based on self-capacitance (Cfinger) formed between a plurality of touch electrodes 1000 and a pointer such as a finger or a pen.

13 is a view for explaining the concept of touch driving and touch sensing of the organic light emitting display device 100 having an in-cell type touch structure according to another exemplary embodiment. 14 is a diagram for explaining a touch sensing principle of an organic light emitting display device 100 having an in-cell type touch structure according to another exemplary embodiment.

Referring to FIG. 13, the organic light emitting display device 100 having an in-cell type touch structure according to another embodiment touches each touch drive signal Vo during one frame period and during a period operating in a touch mode. By applying it to the electrode 1000, a self capacitance Cfinger between the touch electrode 1000 and a pointer such as a finger or a pen is sensed.

Referring to FIG. 14, according to the presence or absence of a touch, RC (Resistance Capacitance) delay may vary depending on whether or not a cfinger is formed between the corresponding touch electrode 1000 and a pointer such as a finger or a pen. . The presence or absence of touch and touch coordinates are sensed by using the RC delay.

Referring to FIG. 14, ideally, when the touch driving signal Vo is applied and not applied, sensing the touch electrode 1000 that is cut off after the touch driving signal Vo corresponding to the initial voltage Vo is applied. The voltage (Vsensor) must immediately drop from Vo to zero, but due to the RC delay phenomenon, the sensing voltage (Vsensor) gradually falls.

Referring to FIG. 14, the speed of the voltage drop varies depending on the presence or absence of a touch.

Referring to FIG. 14, when there is a touch, the voltage decreases slowly, and when there is no touch, the voltage decreases more quickly.

Referring to FIG. 14, when there is no touch, the time when the sensing voltage Vsensor falls and reaches the threshold voltage Vx is t _0, but when there is a touch, the sensing voltage Vsensor falls and the threshold voltage The time to reach (Vx) becomes t _touch longer than t ₀ .

Referring to FIG. 14, due to an increase in self-capacitance (Cfinger), a delay as much as Δt occurs, and the presence or absence of a touch and touch coordinates may be detected based on this delay.

Therefore, by measuring the speed of voltage drop for the sensing voltage Vsensor for the touch electrode 1000 with its own capacitance (Cfinger), that is, the time to reach the threshold voltage Vx, the presence or absence of a touch and the touch coordinates are detected. can do.

FIG. 15 is a parasite formed between the touch electrode 1000 and an electrode (eg, a cathode electrode) of an organic light emitting diode (OLED) in the organic light emitting display device 100 having an in-cell type touch structure according to another embodiment. A diagram showing a capacitor and a phenomenon in which touch sensing sensitivity is deteriorated accordingly.

Referring to FIG. 15, as described above, the organic light emitting display device 100 having an in-cell type touch structure according to another exemplary embodiment includes a cfinger capacitance formed between a pointer such as a finger and the touch electrode 1000. ) To perform touch sensing.

However, as the touch drive signal Vo is applied to the touch electrode 1000, the cathode electrode 1500 and the touch electrode 1000 formed on the second electrode forming layer 208 corresponding to the lower layer of the touch electrode 1000 A capacitance may be formed therebetween.

Referring to FIG. 15, a capacitance formed between the cathode electrode 1500 and the touch electrode 1000 is a parasite capacitance component.

RC delay is different compared to when there is no capacitance, that is, parasitic capacitance formed between the cathode electrode 1500 and the touch electrode 1000.

This is because the C value determining the RC delay is changed into a composite value of its own capacitance (Cfinger) and parasitic capacitance (Ccathode).

Accordingly, touch sensing sensitivity may be greatly degraded due to the parasitic capacitance Ccathode formed between the cathode electrode 1500 and the touch electrode 1000.

FIG. 16 illustrates a touch electrode 1000 and an electrode of an organic light emitting diode (OLED) (eg, a cathode electrode 1500 of FIG. 15) in an organic light emitting display device 100 having an in-cell type touch structure according to another embodiment. ) Is a diagram showing a method of preventing formation of a parasite capacitor between.

Referring to FIG. 16, in order to prevent the formation of a parasitic capacitor between the touch electrode 1000 and the electrode of the organic light emitting diode (OLED, for example, a cathode electrode), when the driving mode is the touch mode, a number of While the touch driving signal is being applied to the touch electrode 1000 of the first substrate 200, a signal VSS_TM that is the same as or corresponding to the touch driving signal Vo is further generated by the electrode of the organic light emitting diode OLED formed on the first substrate 200. Can be authorized.

Here, the electrode of the organic light emitting diode OLED to which the signal VSS_TM that is the same as or corresponding to the touch driving signal Vo is applied may be, for example, the cathode electrode 1500 of FIG. 15, or according to the pixel design method. May be an anode electrode.

The at least one touch integrated circuit 150 may directly apply a signal VSS_TM equal to or corresponding to the touch driving signal Vo to an electrode of the organic light emitting diode OLED.

Unlike this, at least one touch integrated circuit 150 outputs a control signal (eg, a touch mode enable signal, etc.) to the power integrated circuit 160, and the power integrated circuit 160 outputs a touch driving signal Vo The same or corresponding signal VSS_TM may be applied to the electrode of the organic light emitting diode OLED.

17 illustrates various parasitic capacitors formed in the organic light emitting display panel 110 in which the touch screen panel 212 is embedded in the organic light emitting display device 100 having an in-cell type touch structure according to another embodiment. Parasite Capacitor) and a phenomenon in which touch sensing sensitivity is deteriorated.

Referring to FIG. 17, when the driving mode is the touch mode, when a touch driving signal is applied to the touch electrode 1000, not only the parasitic capacitance formed between the touch electrode 1000 and the cathode electrode 1500 is , Parasitic capacitance may also be formed between the touch electrode 1000 and other types of conductors formed on the organic light emitting display panel 110.

For example, referring to FIG. 17, when a touch driving signal is applied to the touch electrode 1000, in addition to the parasitic capacitance formed between the touch electrode 1000 and the cathode electrode 1500, the touch electrode 1000 One or more of a parasitic capacitance Cdata between) and the data line DL, and a parasitic capacitance Cgate between the touch electrode 1000 and the gate line GL may be further formed.

In some cases, in addition to the data line DL and the gate line GL, between the touch electrode 1000 and another conductor 1700 such as a driving voltage line VDD line formed on the organic light emitting display panel 110, Parasitic capacitances (Cothers) can be formed.

If, when a touch driving signal is applied to the touch electrode 1000, a parasitic capacitance between the touch electrode 1000 and the cathode electrode 1500 (Ccathode), and the parasitic capacitance between the touch electrode 1000 and the data line (DL) (Cdata), parasitic capacitance (Cgate) between the touch electrode 1000 and the gate line (GL), when parasitic capacitance (Cothers) is formed between the other conductor 1700 and the touch electrode 1000, four parasitic capacitances (Ccathode, Cdata, Cgate, Cothers) and one self-capacitance (Cfinger) are connected in parallel, and the total capacitance value becomes larger than when there is only its own capacitance (Cfinger), resulting in a larger RC delay. For this reason, accurate touch sensing cannot be performed.

18 illustrates various parasite capacitors in the organic light emitting display panel 110 in which the touch screen panel 212 is embedded in an organic light emitting display device 100 having an in-cell type touch structure according to another embodiment. ) Is a diagram showing a method of preventing formation.

Referring to FIG. 18, when the driving mode is the touch mode, at least one of other conductors 1700 such as a cathode electrode 1500, a data line DL, a gate line GL, and a driving voltage line VDD. By applying a signal that is the same as or corresponding to the touch drive signal Vo as one, it prevents the formation of various parasite capacitors on the organic light-emitting display panel 110 in which the touch screen panel 212 is embedded. can do.

Regarding the signal application method, the at least one touch integrated circuit 150 transmits a signal equal to or corresponding to the touch driving signal to the data line DL, the gate line GL, and the driving voltage line VDD. It may be applied directly to at least one of the other conductors 1700.

Alternatively, the at least one touch integrated circuit 150 outputs a control signal to at least one of the data driving unit 120, the gate driving unit 120, and the power integrated circuit 160, and the data driving unit 120 and the gate driving unit 120 And at least one of the power integrated circuit 160 is the same as or corresponding to the touch drive signal among other conductors 1700 such as the data line DL, the gate line GL, and the driving voltage line VDD. At least one can be applied.

In more detail, at least one touch integrated circuit 150 outputs a control signal to the power integrated circuit 160, and the power integrated circuit 160 is the same as or corresponds to the touch drive signal Vo according to the control signal. The resulting signal VSS_TM may be applied to the cathode electrode 1500.

At least one touch integrated circuit 150 outputs a control signal to the power integrated circuit 160, and the power integrated circuit 160 transmits a signal VDD_TM equal to or corresponding to the touch drive signal Vo according to the control signal. It can be applied through the driving voltage line (VDD Line).

Here, the driving voltage line to which the same or corresponding signal as the touch driving signal Vo is applied may be all driving voltage lines, and parasitic with the corresponding touch electrode 1000 to which the touch driving signal Vo is applied at the present time. It may be at least one driving voltage line in a position where capacitance can be formed.

At least one touch integrated circuit 150 outputs a control signal to the power integrated circuit 160 or the data driver 120, and the power integrated circuit 160 or the data driver 120 outputs a touch driving signal ( The signal DATA_TM identical to or corresponding to Vo) may be applied to the data line DL.

Here, the data line to which the same or corresponding signal as the touch drive signal Vo is applied may be all data lines, and the corresponding touch electrode 1000 and the parasitic capacitance to which the touch drive signal Vo is applied at the present time. It may be at least one data line in a position that can be formed.

The at least one touch integrated circuit 150 outputs a control signal to the power integrated circuit 160 or the gate driver 130, and the power integrated circuit 160 or the gate driver 130 outputs a touch driving signal ( A signal SCAN_TM equal to or corresponding to Vo) may be applied to the gate line GL.

Here, the gate line to which the same or corresponding signal as the touch drive signal Vo is applied may be all gate lines, and the corresponding touch electrode 1000 and the parasitic capacitance to which the touch drive signal Vo is applied at the present time. It may be at least one gate line in a position that can be formed.

19 and 20 are exemplary diagrams illustrating a method of preventing the formation of various parasite capacitors on the organic light emitting display panel 110 in which the touch screen panel 212 is embedded under a 2T1C pixel structure.

19 and 20 illustrate a 2T (Transistor) 1C (Capacitor) pixel in which each pixel P is composed of two transistors T1 and T2 and one storage capacitor Cst in addition to one organic light emitting diode (OLED). In the case of having a structure, a diagram showing a method for preventing formation of parasitic capacitance. However, in FIGS. 19 and 20, it is exemplified that the two transistors T1 and T2 are of the P type.

Referring to FIGS. 19 and 20, during one frame period, display driving for a display mode and touch driving for a touch mode are performed.

Referring to FIG. 19, when driving a touch for a touch mode, a touch driving signal Vo is applied to the touch electrode 1000, and a signal VSS_TM equal to or corresponding to the touch driving signal Vo is applied to the cathode electrode 1500. ) Is applied.

Therefore, a parasitic capacitance Ccathode is not formed between the cathode electrode 1500 and the touch electrode 1000.

At this time, the driving voltage VDD supplied from the driving voltage line VDD line to the transistor T1 corresponding to the driving transistor drops to a low level, and the scan signal G[n] applied to the gate of the transistor T2 corresponding to the switching transistor is It is held at a high level, and transistor T2 is turned off. Also, the data voltage Data supplied from the data line DL to the transistor T2 corresponding to the switching transistor is not supplied.

Referring to FIG. 20, when driving a touch for a touch mode, a touch driving signal Vo is applied to the touch electrode 1000, and a signal VSS_TM equal to or corresponding to the touch driving signal Vo is applied to the cathode electrode 1500. ) Is applied.

In addition, the driving voltage line VDD Line supplies a driving voltage VDD corresponding to a signal VDD_TM equal to or corresponding to the touch driving signal Vo to a transistor T1 corresponding to a driving transistor.

Further, the gate line GL supplies a signal SCAN_TM, which is the same as or corresponding to the touch drive signal Vo, as the scan signal G[n] to the gate of the transistor T2 corresponding to the switching transistor.

In addition, the data line DL supplies a signal DATA_TM equal to or corresponding to the touch driving signal Vo supplied to the transistor T2 corresponding to the switching transistor as the data voltage Data.

Therefore, the parasitic capacitance Ccathode between the touch electrode 1000 and the cathode electrode 1500, the parasitic capacitance Cdata between the touch electrode 1000 and the data line DL, the touch electrode 1000 and the gate line GL ), parasitic capacitance (Cgate), and formation of parasitic capacitance (Cothers) between the driving voltage line (VDD Line) corresponding to the other conductor 1700 and the touch electrode 1000 can be prevented.

21 and 22 are diagrams illustrating a method of preventing the formation of various parasite capacitors on the organic light emitting display panel 110 in which the touch screen panel 212 is embedded under a 4T2C pixel structure.

21 and 22 show a 4T2C pixel structure in which each pixel P is composed of four transistors T1, T2, T3, T4 and two storage capacitors Cst1 and Cst2 in addition to one organic light emitting diode (OLED). In the case of having a, a diagram showing a method for preventing formation of parasitic capacitance. However, in Figs. 21 and 22, it is exemplified that the four transistors T1 and T2 are of the P type.

The 4T2C pixel structure in FIGS. 21 and 22 further includes a transistor and a capacitor as compared to FIGS. 19 and 20 in order to provide a pixel compensation function.

In addition, in the case of the 4T2C pixel structure in FIGS. 21 and 22, a transistor T4 corresponding to an emission control transistor is further included between a transistor T1 corresponding to a driving transistor and an organic light emitting diode (OLED).

The transistor T4 is controlled to be turned on and off according to the scan signal EM[n], thereby controlling light emission of the organic light emitting diode (OLED).

For example, when the driving mode is the display mode, the transistor T4 corresponding to the emission control transistor may be turned on and off according to the emission operation timing of the organic light emitting diode (OLED).

When the driving mode is the touch mode, the transistor T4 corresponding to the emission control transistor may be turned off by receiving a high-level scan signal EM[n] as a gate. Accordingly, it is possible to prevent unnecessary light emission of the organic light emitting diode (OLED) in the touch mode section.

Referring to FIG. 21, when driving a touch for a touch mode, a touch drive signal Vo is applied to the touch electrode 1000, and a signal VSS_TM equal to or corresponding to the touch drive signal Vo is applied to the cathode electrode 1500. ) Is applied.

Therefore, a parasitic capacitance Ccathode is not formed between the cathode electrode 1500 and the touch electrode 1000.

At this time, the driving voltage VDD supplied from the driving voltage line VDD line to the transistor T1 corresponding to the driving transistor drops to a low level, and the scan signal G[n] applied to the gate of the transistor T2 corresponding to the switching transistor is It is held at a high level, and transistor T2 is turned off. Also, the data voltage Data supplied from the data line DL to the transistor T2 corresponding to the switching transistor is not supplied.

Referring to FIG. 22, when driving a touch for a touch mode, a touch driving signal Vo is applied to the touch electrode 1000, and a signal VSS_TM equal to or corresponding to the touch driving signal Vo is applied to the cathode electrode 1500. ) Is applied.

In addition, the driving voltage line VDD Line supplies a driving voltage VDD corresponding to a signal VDD_TM equal to or corresponding to the touch driving signal Vo to a transistor T1 corresponding to a driving transistor.

Further, the gate line GL supplies a signal SCAN_TM, which is the same as or corresponding to the touch drive signal Vo, as the scan signal G[n] to the gate of the transistor T2 corresponding to the switching transistor.

In addition, the data line DL supplies a signal DATA_TM equal to or corresponding to the touch driving signal Vo supplied to the transistor T2 corresponding to the switching transistor as the data voltage Data.

Therefore, the parasitic capacitance Ccathode between the touch electrode 1000 and the cathode electrode 1500, the parasitic capacitance Cdata between the touch electrode 1000 and the data line DL, the touch electrode 1000 and the gate line GL ), parasitic capacitance (Cgate), and formation of parasitic capacitance (Cothers) between the driving voltage line (VDD Line) corresponding to the other conductor 1700 and the touch electrode 1000 can be prevented.

The present embodiments may provide the organic light emitting display device 100 having an in-cell type touch structure.

The present embodiments can provide an organic light emitting display device 100 having a touch structure that simplifies a manufacturing process and enables a flexible product to be manufactured.

The present embodiments can provide the organic light emitting display device 100 having a touch structure capable of reducing luminance and preventing visibility and increasing an aperture ratio.

The present embodiments can provide the organic light emitting display device 100 capable of preventing unnecessary parasitic capacitors from being formed during touch driving and touch sensing.

The present embodiments may provide an organic light emitting display device 100 that performs touch driving capable of accurate touch sensing.

The description above and the accompanying drawings are merely illustrative of the technical idea of the present invention, and those of ordinary skill in the technical field to which the present invention pertains, combinations of configurations without departing from the essential characteristics of the present invention Various modifications and variations, such as separation, substitution and alteration, will be possible. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

100: organic light emitting display device 110: organic light emitting display panel
120: data driver 130: gate driver
140: timing controller 150: touch integrated circuit
160: power integrated circuit 200: first substrate
202: transistor formation layer 204: first electrode formation layer
206: organic layer 208: second electrode formation layer
210: encapsulation layer 212: touch electrode formation layer
214: resin layer 216: color conversion layer
218: second substrate 220: adhesive layer
220: cover 310: first touch electrode
320: second touch electrode 410: first pad
420: second pad 430: routing wiring
800: insulating layer 810a, 810b, 810c: color filter
820: black matrix 1000: touch electrode
1010: signal line 1500: cathode electrode

Claims (29)

A substrate including a pixel region and a non-pixel region;
A light emitting diode formed on the substrate;
An encapsulation layer on the light emitting diode;
A touch sensor positioned on the encapsulation layer;
A plurality of routing wires connected to the touch sensor and positioned in the non-pixel area; And
Including an insulating layer positioned on the encapsulation layer,
The encapsulation layer includes a portion extending to an outer area of the active area in which the touch sensor is disposed,
At least a portion of the routing wiring is located on the encapsulation layer, but is located on a portion extending from the encapsulation layer to an external area of the active area, and at least a part of the routing wiring is provided with the touch sensor and the A display device connected on the encapsulation layer and positioned on a side surface of the insulating layer in the non-pixel area.
The method of claim 1,
At least a portion of the touch sensor is positioned on a side surface of the insulating layer in the non-pixel area.
The method of claim 1,
A display device further comprising a resin layer formed to cover the touch sensor.
The method of claim 3,
The display device further comprises a cover positioned on the resin layer.
The method of claim 1,
A display device further comprising a color conversion layer positioned on the touch sensor.
The method of claim 5,
The color conversion layer includes a plurality of color filters, and further includes a black matrix formed at a boundary of each of the plurality of color filters.
The method of claim 6,
The touch sensor includes a plurality of touch electrodes, and each of the plurality of touch electrodes is formed in an area of the black matrix.
The method of claim 7,
The width of each of the plurality of touch electrodes is less than or equal to the width of the black matrix.
The method of claim 1,
A display device in which a plurality of touch electrodes included in the touch sensor are formed in a mesh shape.
The method of claim 1,
The routing wiring is connected to a pad at an outer periphery of a side surface of the insulating layer.
The method of claim 1,
The touch sensor,
A plurality of first touch electrodes positioned on the encapsulation layer and spaced parallel to each other,
A display device including a plurality of second touch electrodes positioned on the plurality of first touch electrodes and spaced parallel to each other.
The method of claim 11,
The insulating layer is formed between the first touch electrode and the second touch electrode.
The method of claim 11,
The first touch electrode overlaps a part of the second touch electrode.
The method of claim 11,
The plurality of routing wires are formed on the same layer as the first touch electrode or the second touch electrode.
The method of claim 11,
The plurality of routing wires,
A display device comprising: a first routing wire connected to one side of the plurality of second touch electrodes, and a second routing wire connected to the other side of the other of the plurality of second touch electrodes.
The method of claim 11,
A display device further comprising a touch circuit for applying a touch driving signal to one of the first touch electrode and the second touch electrode and receiving a reception signal from the other.
The method of claim 1,
The touch sensor includes a plurality of touch electrodes spaced apart from each other and all located on the same layer, and a plurality of signal lines corresponding to the plurality of routing wires are connected to correspond to the plurality of touch electrodes.
The method of claim 17,
Some of the plurality of signal lines overlap one or more touch electrodes.
The method of claim 17,
The plurality of touch electrodes include a first touch electrode and a second touch electrode positioned on the same layer,
The first touch electrode and the second touch electrode are arranged in the same row,
The plurality of signal lines include a first signal line connected to the first touch electrode and a second signal line connected to the second touch electrode,
The first signal line overlaps the second touch electrode disposed on the same layer as the first touch electrode, and is not connected to the second touch electrode.
The method of claim 17,
A display device further comprising a touch circuit configured to apply a touch driving signal to the touch electrode and sense the touch electrode.
The method of claim 1,
The substrate is a flexible display device.
The method of claim 1,
The display device further comprises a touch circuit for sensing the touch sensor to detect the presence or absence of touch or touch coordinates by at least one of a finger and a pen.
The method of claim 1,
When a touch drive signal is applied to the touch sensor, a signal corresponding to the touch drive signal and a signal waveform is further applied to one or more conductors located under the touch sensor.
The method of claim 23,
The touch drive signal and the signal corresponding to the touch drive signal and the signal waveform are signals of varying voltage levels.
The method of claim 1,
A plurality of data lines and a plurality of gate lines are formed on the substrate, a plurality of pixels are formed,
Each of the plurality of pixels includes the light-emitting diode, a driving transistor for driving the light-emitting diode, and a switching transistor for transferring a data voltage input through the data line.
The method of claim 25,
The driving transistor and the switching transistor are formed under a layer on which the light emitting diode is formed.
The method of claim 25,
When a touch drive signal is applied to the touch sensor, a signal corresponding to the touch drive signal and a signal waveform is further applied to the data line.
The method of claim 25,
When a touch driving signal is applied to the touch sensor, a signal corresponding to the touch driving signal and a signal waveform is further applied to the gate line.
The method of claim 25,
When a touch driving signal is applied to the touch sensor, a driving voltage is supplied to the driving transistor, and a signal corresponding to the touch driving signal and a signal waveform is further applied to a voltage line different from the data line and the gate line .

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