KR102668202B1 - Organic light emitting display device - Google Patents

Abstract

One embodiment of the present invention is to provide an organic light emitting display device that can provide a touch function without including a separate touch panel, and includes a transistor disposed on one side of a first substrate and including a first driving power line. an array, an organic light emitting element array disposed between a second substrate and the transistor array, a black matrix disposed between the first substrate and a third substrate facing the other side of the first substrate, and the third substrate and the It includes a touch receiving electrode disposed between the black matrices and crossing the first driving power line. And, during the touch detection period, which is part of each vertical period, a touch is detected using a touch transmitting electrode and a touch receiving electrode, each of which is composed of two or more first driving power lines that are adjacent to and connected to each other among the first driving power lines. do. As a result, a touch function can be provided without including a separate touch panel, which is advantageous for thinning and lightweighting, and deterioration of the display function due to the touch panel can be prevented.

Description

Organic light emitting display device {ORGANIC LIGHT EMITTING DISPLAY DEVICE}

The present invention relates to an organic light emitting display device, and particularly to an organic light emitting display device capable of incorporating a touch function.

Display devices are applied to various electronic devices such as TVs, mobile phones, laptops, and tablets. Accordingly, research is continuing to develop display devices that are thinner, lighter, and have lower power consumption.

Representative examples of display devices include Liquid Crystal Display device (LCD), Plasma Display Panel device (PDP), Field Emission Display device (FED), and Electro Luminescence. Display device (ELD), Electro-Wetting Display device (EWD), and Organic Light Emitting Display device (OLED).

Among them, an organic light emitting display (OLED) is a device that displays images using organic light emitting elements. Here, since the organic light emitting device is a self-emitting device, the organic light emitting display device can display an image without a separate light source. Accordingly, the organic light emitting display device has the advantage of being lighter and thinner than the liquid crystal display device.

Meanwhile, recently, in order to improve user convenience, display devices have been developed and commercialized with a built-in touch panel so that they can be implemented as touch screens. The touch panel detects the contact point of a person's hand or object and provides the function of receiving user commands.

A typical display device with a built-in touch panel can be implemented using a method of attaching a separate touch panel to the display panel, that is, an add-on method.

However, in the case of the add-on method, there is a limit to reducing the weight and thickness of the display device by adding a separate touch panel, and there is a problem in that the display characteristics are deteriorated due to the separate touch panel.

Accordingly, an IN-CELL method that uses some components of the display panel as electrodes for detecting touch has been proposed.

In the case of a liquid crystal display device, capacitance for detecting touch can be implemented using the liquid crystal layer between the upper and lower panels of the display panel, making it easy to embed a touch panel in an in-cell method.

However, in the case of an organic light emitting display device, since the display panel does not include appropriate components to implement capacitance, separate components must be added to implement capacitance. In addition, since the display panel of an organic light emitting display device has a sealed structure that blocks oxygen or moisture to prevent deterioration of the organic light emitting device, there is a problem in that it is difficult to add a separate component for touch detection.

Therefore, methods for embedding a touch panel in an organic light emitting display device using an in-cell method are being studied.

The present invention is an organic light emitting display device that can detect touch using some components of the display panel similar to the in-cell method, which is advantageous for weight reduction and thinning, and can prevent deterioration of display characteristics due to the touch panel. It is intended to provide.

The objects of the present invention are not limited to the objects mentioned above, and other objects and advantages of the present invention that are not mentioned can be understood by the following description and will be more clearly understood by the examples of the present invention. Additionally, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof indicated in the patent claims.

An example of the present invention is to provide an organic light emitting display device that can provide a touch function without including a separate touch panel. The organic light emitting display device according to an example of the present invention is provided on one side of the first substrate. A transistor array disposed and including a first driving power line, an organic light emitting element array disposed between a second substrate and the transistor array, and disposed between the first substrate and a third substrate facing the other side of the first substrate. a black matrix, and a touch receiving electrode disposed between the third substrate and the black matrix and crossing the first driving power line. And, during the touch detection period, which is part of each vertical period, a touch is detected using a touch transmitting electrode and a touch receiving electrode, each of which is composed of two or more first driving power lines that are adjacent to and connected to each other among the first driving power lines. do.

In this way, a touch can be detected using a touch transmitting electrode each composed of two or more first driving power lines interconnected, and a touch receiving electrode crossing the first driving power line. That is, by using the first driving power line for driving the organic light emitting device and the touch receiving electrode disposed on the third substrate along with the black matrix for touch detection, the touch function is provided without including a separate touch panel. can be provided. Therefore, it is advantageous for thinness and weight reduction, and deterioration of the display function due to the touch panel can be prevented.

According to an embodiment of the present invention, a touch function is provided using two or more first driving power lines adjacent to each other and interconnected during the touch detection period, and a touch receiving electrode disposed on a third substrate together with a black matrix, Similar to the in-cell method, it may have a structure with a built-in touch panel. Therefore, while providing a touch function, it is advantageous for weight reduction and thinness, and it is possible to prevent deterioration of display characteristics due to the touch panel.

1 is a cross-sectional view of a portion of an organic light emitting display device according to an embodiment of the present invention.
FIG. 2 is a diagram showing a plurality of pixel areas in the organic light emitting display device of FIG. 1.
FIG. 3 is a diagram showing the arrangement between the touch transmitting electrode and the touch receiving electrode consisting of the first driving power line of FIG. 2.
FIG. 4 is a diagram illustrating an example of detecting a touch using the touch transmitting electrode and the touch receiving electrode of FIG. 3.
Figure 5 is a diagram showing the equivalent circuit of each pixel area during the video output period.
Figure 6 is a diagram showing an equivalent circuit of a pixel area in a non-sensing state during a touch detection period.
Figure 7 is a diagram showing an equivalent circuit of a pixel area in a sensing state during a touch detection period.

Hereinafter, an organic light emitting display device with a built-in touch panel according to each embodiment of the present invention will be described in detail with reference to the attached drawings.

1 is a cross-sectional view of a portion of an organic light emitting display device according to an embodiment of the present invention. FIG. 2 is a diagram showing a plurality of pixel areas in the organic light emitting display device of FIG. 1. FIG. 3 is a diagram showing the arrangement between the touch transmitting electrode and the touch receiving electrode consisting of the first driving power line of FIG. 2. FIG. 4 is a diagram showing an example of detecting a touch using the touch transmitting electrode and the touch receiving electrode of FIG. 3. Figure 5 is a diagram showing the equivalent circuit of each pixel area during the video output period. Figure 6 is a diagram showing an equivalent circuit of a pixel area in a non-sensing state during a touch detection period. Figure 7 is a diagram showing an equivalent circuit of a pixel area in a sensing state during a touch detection period.

As shown in FIG. 1, the organic light emitting display device 100 according to an embodiment of the present invention includes a first substrate 101, a transistor array 110 disposed on one surface of the first substrate 101, and a first The second substrate 102 facing one side of the substrate 101, the organic light emitting device array 120 disposed between the first substrate 101 and the second substrate 102, and the other side of the first substrate 101 a third substrate 103 facing, a black matrix (BM) and color filter array 130 disposed between the first substrate 101 and the third substrate 103, and the third substrate 103 and the black matrix. It includes a touch receiving electrode (Rx) disposed between (BM).

The transistor array 110 is disposed on one side of the first substrate 101, defines a plurality of pixel areas (PA) corresponding to the display area where the image is displayed, and independently drives each pixel area (PA). do.

Specifically, the transistor array 110 includes a gate line (GL in FIG. 2), a data line (DL in FIG. 2), and a plurality of pixel areas (PA) that intersect each other to define a plurality of pixel areas (PA) in the display area. It includes a plurality of driving transistors (DTR) corresponding to. In addition, the transistor array 110 has a first driving power line (VddL) connected to a plurality of driving transistors (DTR) and a second driving power line (VssL in FIG. 2) connected to an organic light emitting element (ED) to be described later. Includes more.

Exemplarily, each driving transistor (DTR) is disposed on a gate electrode (GE) disposed on one side of the first substrate 101, and a gate insulating film 111 covering the gate electrode (GE). It may include an active layer (ACT) overlapping with, and a source electrode (SE) and a drain electrode (DE) disposed on the gate insulating film 111 and in contact with both sides of the active layer (ACT).

In addition, the transistor array 110 may further include a planarization film 112 that covers a plurality of driving transistors (DTR) and has a flat shape. That is, the planarization film 112 is disposed on the gate insulating film 111 and covers the active layer (ACT), source electrode (SE), and drain electrode (DE).

Additionally, the first driving power line (VddL) may be made of a metal layer (113c) disposed on the gate insulating film 111 that is the same layer as the source electrode (SE) and the drain electrode (DE).

In contrast, the first driving power line (VddL) is disposed on the first metal layer (113a) and the gate insulating film (111) disposed on one side of the first substrate (101) on the same layer as the gate electrode (GE), and the gate It may have a structure including a second metal layer 113b connected to the first metal layer 113a through the first contact hole 113b penetrating the insulating film 111. Here, the second metal layer 113b may be patterned in a line shape corresponding to the display area, and the first metal layer 113a may be spaced apart from each other and patterned in a line shape corresponding to each pixel area PA.

In this way, the wiring resistance of the first driving power line (VddL) can be reduced, power consumption can be reduced, and the uniformity of display characteristics for each region can be improved.

This first driving power line (VddL) is also covered with the planarization film 112.

The organic light emitting device array 120 is disposed between one side of the first substrate 101 and the second substrate 102.

The organic light emitting device array 120 includes a plurality of organic light emitting devices (ED) corresponding to a plurality of pixel areas (PA). Each organic light emitting element (ED) is connected between the driving transistor (DTR) and the second driving power line (VssL in FIG. 2).

Each organic light emitting element (ED) has an anode 121 connected to the first driving power line (VddL) through a driving transistor (DTR), a cathode 122 connected to the second driving power line (VssL), and an anode ( It includes an organic layer 123 disposed between 121) and the cathode 122.

Specifically, as shown in FIG. 1, the organic light emitting device array 120 is disposed on the planarization film 112.

In addition, the organic light emitting device array 120 is disposed on the planarization film 112, corresponds to each pixel area (PA), and connects the driving transistor (DTR) through the second contact hole 112a that penetrates the planarization film 112. connected to the anode 121, the bank layer 124 disposed on the planarization film 112 and overlapping on the edge of the anode 121, the organic layer 123 disposed on the anode 121, and the organic layer 123. ) and includes a cathode 124 corresponding to a plurality of pixel areas (PA).

This organic light emitting device array 120 further includes a protective film 125 covering the cathode 124 to block penetration of moisture or oxygen into the organic layer 123.

Then, the second substrate 102 is disposed on the protective film 125.

The third substrate 103 is disposed to face the second substrate 102 with the first substrate 101 interposed therebetween. That is, the third substrate 103 faces the other side of the first substrate 101.

The black matrix (BM) is disposed on one side of the third substrate 103 facing the other side of the first substrate 101, and corresponds to the non-emissive area (NEA) outside each pixel area (PA).

The color filter array 130 is disposed on one side of the third substrate 103, overlaps the edge of the black matrix BM, and includes a plurality of color filters (R, G) corresponding to a plurality of pixel areas (PA). , B). A plurality of color filters (R, G, B) correspond to two or more different colors. Exemplarily, the plurality of color filters (R, G, B) may include a color filter (R) corresponding to red, a color filter (G) corresponding to green, and a color filter (B) corresponding to blue. . Alternatively, although not shown in FIG. 1, the plurality of color filters (R, G, B) may further include a color filter (not shown) corresponding to white.

In addition, the color filter array 130 includes an overcoat film 131 covering a plurality of color filters (R, G, B) and a black matrix (BM), and a space between the overcoat film 131 and the other side of the first substrate 101. It further includes an adhesive film 132 for attaching.

This organic light emitting display device 100 can emit light toward the third substrate 103 and display a color image.

In addition, the organic light emitting display device 100 further includes a touch receiving electrode (Rx) disposed between the third substrate 103 and the black matrix (BM) and crossing the first driving power line (VddL). The organic light emitting display device 100 may have a built-in touch detection function based on whether the capacitance between the first driving power line (VddL) and the touch receiving electrode (Rx) changes.

Exemplarily, the touch receiving electrode Rx may be made of a conductive light blocking material, a metal material, and a metal oxide material disposed on the third substrate 103. In particular, visibility of the touch receiving electrode (Rx) may occur due to reflection of external light on the display surface. To prevent this, the touch receiving electrode (Rx) may be made of a transparent conductive oxide material such as ITO. And, the black matrix (BM) is arranged to overlap the touch receiving electrode (Rx).

As shown in FIG. 2, the transistor array (110 in FIG. 1) has a gate line GL in a first direction (left and right directions in FIG. 2) and a second direction crossing the first direction (up and down directions in FIG. 2). By including the data line DL, a plurality of pixel areas (PA in FIG. 1) are defined in the display area.

In addition, the transistor array 110 corresponds to a plurality of pixel areas (PA) and is connected to a plurality of switching transistors (STR) and a plurality of switching transistors (STR) connected to the gate line (GL) and the data line (DL). It further includes a plurality of driving transistors (DTR). Here, since the structure of each switching transistor (STR) is the same or similar to the driving transistor (DTR) shown in FIG. 1, detailed description is omitted.

Although not shown in detail in FIG. 2, each switching transistor (STR) may include a gate electrode connected to the gate line (GL), a source electrode connected to the data line (DL), and a drain electrode connected to the driving transistor (DTR). You can.

And, in each driving transistor (DTR), the gate electrode (GE in FIG. 1) is connected to each switching transistor (STR), and the source electrode (SE in FIG. 1) is connected to the first driving power line (VddL). , the drain electrode (DE in Figure 1) may be connected to the organic light emitting device (ED).

In the organic light emitting element array (120 in FIG. 1), each organic light emitting element (ED) is connected between the driving transistor (DTR) and the second driving power line (VssL).

Accordingly, in each pixel area (PA), when the switching transistor (STR) is turned on, the driving transistor (DTR) is turned on, and the first and second driving power lines (VddL, VssL) are transmitted through the turned-on driving transistor (DTR). Driving current is supplied to the organic light emitting device (ED) in between. Accordingly, the organic light emitting device (ED) is driven to emit light based on the driving current.

In addition, the organic light emitting display device 100 according to an embodiment of the present invention further includes a touch receiving electrode (Rx) crossing the first driving power line (VddL). Illustratively, the first driving power line (VddL) extends in a second direction (up and down direction in FIG. 2) parallel to the data line (DL), and the touch receiving electrode (Rx) is connected to the gate line (GL). It may be in a form that extends side by side in the first direction (left and right directions in FIG. 2).

Whether or not a touch is touched can be detected through a change in capacitance between the first driving power line (VddL) and the touch receiving electrode (Rx).

As shown in FIG. 3, the organic light emitting display device 100 includes touch transmission electrodes (Tx(1), Tx(2), each composed of two or more first driving power lines (VddL) adjacent to each other and connected to each other. ... Tx(k), ... Tx(3/n); hereinafter collectively referred to as Tx) (where n is a multiple of 6 or more, and k is a natural number smaller than 3/n), and a first drive. Touch receiving electrodes (Rx(1), Rx(2), ... Rx(m-1), Rx(m); hereinafter collectively referred to as Rx) crossing the power line (VddL) (where m is 4 or more) (a natural number) is used to detect touch.

In addition, the organic light emitting display device 100 further includes a touch driver 140 that drives a touch transmission electrode (Tx) and a touch reception electrode (Rx) to detect a touch.

The touch driver 140 includes a touch driving pad (TPAD) connected to each of the touch transmitting electrode (Tx) and the touch receiving electrode (Rx).

As an example, each touch transmission electrode Tx may be composed of three first driving power lines that are adjacent to each other and connected to each other. That is, the first touch transmission electrode (Tx(1)) is composed of VddL1, VddL2, and VddL3 that are adjacent to each other and connected to each other, and the second touch transmission electrode (Tx(2)) is composed of VddL4, VddL5, and VddL6, The kth touch transmission electrode (Tx(k)) is composed of VddL(3k-2), VddL(3k-1), and VddL(3k), and the 3/nth touch transmission electrode (Tx(3/n)) is It may be composed of VddL(n-2), VddL(n-1), and VddL(n)).

However, this is only an example, and the number of first driving power lines (VddL) corresponding to each touch transmission electrode (Tx) is several considering the width of the display area, characteristics of the touch driver 140, and touch precision, etc. It can be set to dozens or dozens.

In addition, the organic light emitting display device 100 according to an embodiment of the present invention further includes a plurality of touch dummy electrodes (Dx) disposed between the plurality of touch receiving electrodes (Rx) and maintained in a floating state.

Although not shown in detail, the touch dummy electrode (Dx), like the touch receiving electrode (Rx) in FIG. 1, is disposed between the third substrate (103 in FIG. 1) and the black matrix (BM in FIG. 1), and is used for the first driving It crosses the power line (VddL). Additionally, the touch dummy electrodes (Dx) are arranged to alternate with the touch receiving electrodes (Rx).

This touch dummy electrode (Dx) is maintained in a floating state, thereby generating a horizontal capacitance together with the touch receiving electrode (Rx). Accordingly, the capacitance between the touch receiving electrode (Rx) and the touch dummy electrode (Dx) changes due to a touch occurring on the other side of the third substrate 103, so that the touch receiving electrode (Rx) and the touch transmitting electrode (Tx) ) the capacitance is more easily varied. Accordingly, the touch sensitivity of the device 100 can be improved by the touch dummy electrode (Dx) disposed on the same layer as the touch receiving electrode (Rx) and maintained in a floating state.

In such an organic light emitting display device 100, when a touch occurs on any part of the display area, the first driving power line VddL (i.e., the touch transmission electrode Tx) corresponding to the contact portion Touch. The capacitance between )) and the touch receiving electrode (Rx) varies depending on the contact (Touch). Accordingly, the touch driver 140 can detect a touch by sequentially driving the touch transmitting electrode (Tx) and the touch receiving electrode (Rx) to detect a portion where the capacitance changes.

That is, as shown in FIG. 4, the touch driver 140 adjusts the voltage level of the plurality of touch receiving electrodes (Rx) in response to the second touch transmitting electrode (Tx(2)) consisting of VddL4, VddL5, and VddL6. Detected sequentially. At this time, as the capacitance is reduced by the touch, the voltage level of the second touch receiving electrode (Rx(2)) will be reduced, so the second touch transmitting electrode (Tx(2)) and the second touch receiving electrode The intersection area of the electrode (Rx(2)) can be derived as the touched part.

As described above, according to an embodiment of the present invention, the first driving power line (VddL) is shared for supplying the first driving power to the organic light emitting device (ED) and for touch detection.

Accordingly, the organic light emitting display device 100 according to an embodiment of the present invention is used to display one frame in order to provide both an image display function and a touch detection function using the first driving power line (VddL). 1 The vertical period is time divided into an image output period and a touch detection period.

That is, the organic light emitting display device 100 includes a touch transmitting electrode (Tx) and a touch receiving electrode (Rx) each composed of two or more first driving power lines (VddL) that are adjacent to each other and connected to each other during the touch detection period that is part of each vertical period. Detect touch using . That is, during the touch detection period, the first driving power line (VddL) is used as a touch transmission electrode (Tx) to detect the touch.

Also, during the image output period, which is another part of each vertical period, each first driving power line (VddL) is used as a line to supply the first driving power (Vdd) to the plurality of organic light emitting elements (ED).

Specifically, as shown in FIG. 5, during the image output period, the first driving power line (VddL) is connected to the first driving power source (Vdd). And, the second driving power line (VssL) is connected to the second driving power source (Vss).

Accordingly, when the driving transistor (DTR) is turned on by the turned-on switching transistor (STR), the first driving power supply (Vdd) and the second driving power supply (Vss) are supplied through the first and second driving power lines (VddL, VssL). ) The driving current flowing between is supplied to the organic light emitting device (ED). At this time, the organic light emitting device (ED) is driven to emit light.

And, as shown in FIGS. 6 and 7, during the touch detection period, each pixel area (PA) shows a change in capacity of mutual capacitance (Cm) between the touch transmitting electrode (Tx) and the touch receiving electrode (Rx). It is in a sensing state that measures or a non-sensing state that maintains mutual capacitance (Cm). At this time, the touch transmitting electrode (Tx) and the touch receiving electrode (Rx) are driven sequentially, so each pixel area (PA) sequentially enters the sensing state, and the pixel area (PA) that is not in the sensing state is maintained in the non-sensing state. do.

That is, as shown in FIG. 6, in the pixel area in a non-sensing state during the touch detection period, the first driving power line (VddL) used as the touch transmission electrode (Tx) is connected to the first driving power source (Vdd). , the touch receiving electrode (Rx) is connected to the touch receiving power source (Vscr). Accordingly, the mutual capacitance (Cm) between the touch transmitting electrode (Tx) and the touch receiving electrode (Rx) is maintained at a voltage level corresponding to the first driving power source (Vdd) and the touch receiving power source (Vscr).

And, as shown in FIG. 7, in the pixel area in the sensing state during the touch detection period, the first driving power line (VddL) used as the touch transmission electrode (Tx) is connected to the touch transmission power source (Vsct), The touch receiving electrode (Rx) is connected to the touch driver 140. Here, the touch transmission power source (Vsct) has a lower voltage level than the first driving power source (Vdd), thereby preventing a significant increase in power consumption due to touch driving. By way of example, the touch transmission power source (Vsct) may be a ground power source (GND).

In addition, referring to the illustration of FIG. 1, parasitic capacitance (Cp in FIG. 6) may be generated in the overlapping area between the cathode 122 of the organic light emitting device (ED) and the first driving power line (VddL). Due to this parasitic capacitance (Cp), the capacity of the mutual capacitance (Cm) between the touch transmitting electrode (Tx) and the touch receiving electrode (Rx) may change, which may cause an error in touch detection.

Accordingly, according to an embodiment of the present invention, in order to reduce the effect of the parasitic capacitance (Cp), the same touch signal as the first driving power line (VddL) is applied to the cathode (122 in FIG. 1) of the organic light emitting device (ED). Credit power (Vsct) is supplied. That is, during the touch detection period, in the pixel area in a non-sensing state, the second driving power line (VssL) connected to the cathode (122 in FIG. 1) is connected to the touch transmission power source (Vsct).

As described above, the organic light emitting display device 110 according to an embodiment of the present invention is disposed on the third substrate 103 along with the black matrix (BM) and the color filter array 130 and includes the transistor array 110. By including a touch receiving electrode (Rx) crossing the first driving power line (VddL) and using two or more first driving power lines (VddL) that are adjacent and interconnected to each other as touch transmitting electrodes (Tx) during the touch detection period. , touch function can be provided. That is, the organic light emitting display device 110 uses some components of the transistor array 110 and some components of the color filter array 130 as electrodes for touch detection, thereby creating a touch panel similar to the in-cell method. It may be comprised of a built-in structure. As a result, while providing a touch function, it is advantageous for weight reduction and thinness, and it is possible to prevent deterioration of display characteristics due to a separate touch panel.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible without departing from the technical spirit of the present invention. It will be clear to those who have the knowledge of.

100: Organic light emitting display device
PA: Pixel area NEA: Non-emissive area
110: transistor array 120: organic light emitting device array
130: Color filter array
101, 102, 103: first, second, third substrate
BM: Black matrix VddL: First driving power line
Rx: Touch receiving electrode Tx: Touch transmitting electrode

Claims (7)

It is disposed on one side of the first substrate, defines a plurality of pixel areas corresponding to the display area, and includes a first driving power line and a plurality of driving transistors connected to the first driving power line and corresponding to the plurality of pixel areas. a transistor array;
A plurality of organic light emitting elements disposed between the transistor array and a second substrate facing one side of the first substrate, corresponding to the plurality of pixel areas, and connected between the plurality of driving transistors and the second driving power line. An organic light emitting device array comprising:
a black matrix disposed between the first substrate and a third substrate facing the other side of the first substrate, and corresponding to a non-emission area outside each of the plurality of pixel areas;
a color filter array disposed between the first substrate and the third substrate and corresponding to the plurality of pixel areas; and
It includes a touch receiving electrode disposed between the third substrate and the black matrix and crossing the first driving power line,
An organic light emitting display device that detects a touch using a touch transmitting electrode each composed of two or more first driving power lines that are adjacent to and connected to each other among the first driving power lines, and the touch receiving electrode. delete According to claim 1,
During the touch detection period, which is part of each vertical period, the first driving power line is used as the touch transmission electrode for detecting the touch,
An organic light emitting display device wherein each first driving power line is used as a line to supply first driving power to the plurality of organic light emitting elements during an image output period that is another part of each vertical period. According to claim 3,
Each of the plurality of organic light emitting devices
an anode connected to the first driving power line through each driving transistor;
a cathode connected to the second driving power line; and
Comprising an organic layer disposed between the anode and the cathode,
An organic light emitting display device in which the same power as the first driving power line is supplied to the cathode in a pixel area in a sensing state during the touch detection period. According to claim 1,
The organic light emitting display device further includes a plurality of touch dummy electrodes disposed between the plurality of touch receiving electrodes and maintained in a floating state. According to claim 5,
The organic light emitting display device wherein the touch dummy electrode is disposed between the third substrate and the black matrix, crosses the first driving power line, and alternates with the touch receiving electrode. According to claim 1,
an overcoat film covering the black matrix and the color filter array disposed on the third substrate; and
The organic light emitting display device further includes an adhesive film attached between the overcoat film and the first substrate.

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