KR20180034779A - Touch driving circuit, organic light emitting display device with a built-in touch screen and method for driving thereof - Google Patents

Abstract

Embodiments of the present invention relate to a touch screen embedded type organic light emitting display device including an organic light emitting display panel in which a touch screen panel is embedded. The touch screen embedded type organic light emitting display device time-divides an image frame section into a display driving section and a touch sensing section and performs display driving and touch sensing, thereby preventing noise from affecting a touch sensing signal wherein the noise is caused by driving of a gate line in case of touch sensing. Also, touch sensing is performed by separating a section, to which a scan signal for sensing/compensating deterioration of a sub pixel is applied, in a blank section while the blank section, to which the scan signal for display driving is not applied, is utilized as the touch sensing section to increase efficiency of touch sensing, thereby preventing the noise due to driving of the gate line even in the blank section and improving accuracy of touch sensing. The touch screen embedded type organic light emitting display device comprises the organic light emitting display panel, a gate driver, and a touch driving circuit.

Description

TECHNICAL FIELD [0001] The present invention relates to a touch driving circuit, a touch screen built-in organic light emitting display, and a driving method thereof. BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an organic light emitting diode (OLED)

The present embodiments relate to an organic light emitting display capable of recognizing a user's touch, a driving method thereof, and a touch driving circuit included in the organic light emitting display.

BACKGROUND ART [0002] As an information society develops, there have been various demands for display devices for displaying images, and various types of display devices such as a liquid crystal display device, a plasma display device, and an organic light emitting display device have been utilized.

Of these display devices, the organic light emitting display uses an organic light emitting diode (OLED) to emit light by itself, and thus has a high response speed and a high contrast ratio, luminous efficiency, luminance and viewing angle.

On the other hand, various types of display devices provide a function of recognizing the user's touch on the display panel and performing input processing according to the convenience and demand of the user.

When a function of recognizing the user's touch is applied to the organic light emitting diode display panel, a plurality of touch electrodes are disposed on the organic light emitting display panel, and a touch driving signal is applied to the touch electrode. The sensing of the touch of the user can be sensed.

In order to improve manufacturing convenience and size reduction of the organic light emitting display, a structure capable of incorporating a touch screen panel made of a touch electrode into the organic light emitting display panel is required.

However, in realizing such a touch-screen built-in organic light emitting display, considerable difficulties and many limitations exist in the structure and manufacturing characteristics of the organic light emitting display.

For example, in order to secure the reliability of the organic light emitting diode display panel, the organic light emitting diode display panel may include a sealing layer for protecting moisture, air, and the like, or physical shocks, Must be formed on the front side.

Therefore, it is difficult to find the arrangement position of the touch electrode that normally enables the touch sensing without deteriorating the display performance due to the sealing layer as well as the complexity and difficulty of the process.

Accordingly, the conventional organic light emitting display device has a problem that the touch structure is implemented by attaching the touch screen panel on the organic light emitting display panel, the manufacturing process is complicated, and the thickness of the organic light emitting display device becomes thick.

In the organic light emitting display panel, a plurality of gate lines to which a scan signal for driving the display is applied are arranged. A change in capacitance of the touch electrode sensed in a period in which a scan signal is applied to the gate line, May be included.

When the noise due to the gate line to which the scan signal is applied is included in the touch sensing signal, there is a problem that accuracy of the touch sensing is lowered.

It is an object of the present embodiments to provide an organic light emitting display panel having a touch screen panel and a touch screen built-in organic light emitting display.

It is an object of the present embodiments to provide a touch screen built-in organic light emitting display device and a method of driving the same, which removes noise included in a touch sensing signal and improves accuracy of touch sensing in an organic light emitting display device performing display driving and touch sensing I have to.

It is an object of the present embodiments to provide a touch screen built-in organic light emitting display device and a driving method thereof that can improve the accuracy of touch sensing in a period of sensing deterioration of subpixels arranged in an organic light emitting display panel.

In one aspect, the present embodiments provide a method of driving a plasma display panel including a plurality of sub-pixels and a plurality of touch electrodes, a plurality of gate lines driving a plurality of sub-pixels, A touch screen built-in type organic light emitting display includes a light emitting display panel, a gate driver for driving a plurality of gate lines, and a touch driving circuit for outputting a touch driving signal to a plurality of touch electrodes.

The organic light emitting display panel of the organic light emitting display having the touch screen may include an encapsulation layer and a color filter layer disposed on the encapsulation layer, and the plurality of touch electrodes may be located on the encapsulation layer.

As an example, a plurality of touch electrodes may be disposed between the encapsulation layer and the color filter layer, and may be disposed between the encapsulation layer and the overcoat layer when the encapsulation layer and the color filter layer include an overcoat layer.

Alternatively, the plurality of touch electrodes may be disposed on the color filter layer, and may be disposed between the color filter layer and the overcoat layer when the overcoat layer is disposed on the color filter layer.

In such a touch-screen-integrated organic light emitting display, the gate driver outputs a scan signal for driving a display of a subpixel in an active period of one image frame period and senses a deterioration of the subpixel in a blank interval of the image frame period And outputs a scan signal for the scan signal.

The touch driving circuit outputs a touch driving signal to a plurality of touch electrodes during a period during which a scan signal is not output by the gate driver in an active section and a blank section of an image frame section.

For example, the touch driving circuit may be configured such that, before a second period in which a scan signal for driving a display of a subpixel is output when a first period in which a scan signal for displaying driving of the subpixel in the active period passes, A touch driving signal is output to a touch electrode disposed in a region where a gate line to which a scan signal is applied is disposed.

In addition, the touch driving circuit outputs a scan signal for the deterioration sensing of the subpixel in the blank section when the last section in which the scan signal for driving the display of the subpixel in the active section elapses, And outputs the touch driving signal to the touch electrode disposed in the region where the applied gate line is disposed.

At this time, the touch driving circuit outputs a touch driving signal in a section between a period in which a first scan signal for detecting the deterioration of the sub-pixel is outputted in the blank section and a second scan signal is outputted in the period in which the sub- can do.

The touch driving circuit sequentially applies the TX signal through the touch wiring arranged parallel to the gate line in the section for outputting the touch driving signal and simultaneously receives the RX signal through the touch wiring arranged crossing the gate line have.

According to another aspect of the present invention, there is provided a method of driving a display device, comprising: outputting a scan signal for driving a display of a subpixel disposed in a first region of an organic light emitting display panel in an active period of one frame of an image frame; The display driving method comprising the steps of: outputting a touch driving signal to a touch electrode disposed in a first area when a touch driving signal is output; Outputting a scan signal for sub-pixel deterioration sensing in a blank section of an image frame section and outputting a scan signal for a sub-pixel deterioration sensing section in a blank section, And outputting a touch driving signal to the organic light emitting display device. The.

In another aspect, in the embodiments, during a period in which a scan signal for display drive or deterioration sensing of subpixels arranged in the organic light emitting display panel in the active section and the blank section of one image frame section is not output, An RX signal receiver for receiving an RX signal from a plurality of touch electrodes in a section in which a TX signal is output, and an RX signal receiver for receiving an RX signal from the plurality of touch electrodes, And a touch sensing unit for sensing a touch on the display panel.

According to the embodiments, a touch screen built-in type organic light emitting display device capable of minimizing an increase in thickness of an organic light emitting display device and sensing a touch to the organic light emitting display panel by incorporating a touch electrode in the organic light emitting display panel is provided.

According to the embodiments, the scan signal applied for the display driving is applied to the gate line arranged in the organic light emitting display panel, and the period for applying the touch driving signal for touch sensing to the touch electrode is temporally separated, So that no noise due to the applied gate line is included in the touch sensing signal.

According to the embodiments, a touch driving signal for touch sensing is output in a time interval that is different from a period in which a deterioration of a sub-pixel arranged in the organic light emitting display panel is sensed in a blank section, So that the touch sensing can be performed without being influenced by the scan signal applied for the scan signal.

According to the embodiments, the touch sensing is performed so that the noise due to the gate line to which the scan signal is applied is not included in the display driving and the deterioration sensing / compensation of the subpixel, thereby improving the accuracy of the touch sensing. A light emitting display device can be provided.

FIG. 1 is a diagram schematically illustrating a configuration for driving a display in a touch-screen-integrated organic light emitting diode display according to the present invention. Referring to FIG.
2 illustrates an example of a structure of a subpixel included in a touch screen built-in organic light emitting display according to the present embodiments.
FIG. 3 is a cross-sectional view illustrating an organic light emitting display panel in a touch screen built-in organic light emitting diode display according to embodiments of the present invention.
FIG. 4 is a view illustrating a color filter on encapsulation layer (COE) structure of an organic light emitting display panel in a touch screen built-in organic light emitting diode display according to embodiments of the present invention.
FIG. 5 is a diagram illustrating a touch sensor on encapsulation layer (TOE) structure of an organic light emitting display panel in a touch screen built-in organic light emitting display according to the present embodiments.
FIG. 6 is a view illustrating an M-TOE (Multiple Touch Sensor Metal Layer On Encapsulation Layer) structure of an organic light emitting display panel in a touch screen built-in organic light emitting display according to embodiments of the present invention.
FIG. 7 is a diagram illustrating a first mixed structure of the COE structure and the M-TOE structure in the organic light emitting display panel of the touch screen built-in organic light emitting display according to the present embodiments.
8 is a cross-sectional view of a first mixed structure of the COE structure and the M-TOE structure in the organic light emitting display panel of the touch screen built-in organic light emitting diode display according to the present embodiments.
FIG. 9 is a diagram illustrating steps of fabricating a first mixed structure of a COE structure and an M-TOE structure in an organic light emitting display panel of a touch screen built-in organic light emitting diode display according to the present embodiments.
10 is a view illustrating a second mixed structure of the COE structure and the M-TOE structure in the organic light emitting display panel of the touch screen built-in organic light emitting diode display according to the present embodiments.
11 is a cross-sectional view of a second mixed structure of the COE structure and the M-TOE structure in the organic light emitting display panel of the touch screen built-in organic light emitting diode display according to the present embodiments.
FIG. 12 is a diagram illustrating steps of fabricating a second mixed structure of the COE structure and the M-TOE structure in the organic light emitting display panel of the touch screen built-in organic light emitting diode display according to the present embodiments.
FIG. 13 is a diagram schematically illustrating a configuration for touch sensing in a touch screen built-in organic light emitting display according to the present embodiments.
FIG. 14 is a timing chart of signals applied for the display driving and the touch sensing in the touch-screen built-in organic light emitting diode display according to the present embodiments.
FIGS. 15 and 16 are views for explaining the timing of performing the display driving and the touch sensing by the touch-screen built-in organic light emitting display according to the present embodiments.
17 is a diagram illustrating an example of the timing of a signal applied for display driving and touch sensing in the touch-screen built-in organic light emitting display according to the present embodiments.
FIG. 18 is a flowchart illustrating a method of driving a touch screen built-in organic light emitting diode display according to an embodiment of the present invention. Referring to FIG.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In the drawings, like reference numerals are used to denote like elements throughout the drawings, even if they are shown on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the components from other components, and the terms do not limit the nature, order, order, or number of the components. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; intervening "or that each component may be" connected, "" coupled, "or " connected" through other components.

FIG. 1 shows a schematic configuration of a touch screen built-in organic light emitting display device 100 according to the present embodiments.

1, a plurality of gate lines GL and a plurality of data lines DL are arranged in a touch screen built-in organic light emitting display device 100 according to the present invention, and a plurality of sub pixels (SP: Sub A gate driver 120 for driving the plurality of gate lines GL; a data driver 130 for driving a plurality of data lines DL; A controller 140 for controlling the data driver 120 and the data driver 130, and the like.

The gate driver 120 sequentially drives the plurality of gate lines GL by sequentially supplying scan signals to the plurality of gate lines GL.

The gate driver 120 sequentially supplies the scan signals of the ON voltage or the OFF voltage to the plurality of gate lines GL under the control of the controller 140 to sequentially supply the plurality of gate lines GL And sequentially driven.

The gate driver 120 may be located on one side of the organic light emitting display panel 110 or on both sides of the organic light emitting display panel 110 according to the driving method.

In addition, the gate driver 120 may include one or more gate driver integrated circuits.

Each gate driver integrated circuit may be connected to a bonding pad of the organic light emitting display panel 110 by a tape automated bonding (TAB) method or a chip on glass (COG) method, (Gate In Panel) type and may be directly disposed on the organic light emitting display panel 110.

The organic light emitting display panel 110 may be integrated with the organic light emitting display panel 110 or may be implemented as a chip on film (COF) method mounted on a film connected to the organic light emitting display panel 110.

The data driver 130 drives the plurality of data lines DL by supplying data voltages to the plurality of data lines DL.

The data driver 130 converts image data received from the controller 140 into analog data voltages and supplies the image data to the plurality of data lines DL so that a plurality of data lines DL are formed. .

The data driver 130 may include at least one source driver integrated circuit to drive a plurality of data lines DL.

Each source driver integrated circuit may be connected to a bonding pad of the organic light emitting display panel 110 by a tape automated bonding (TAB) method or a chip on glass (COG) And may be directly disposed on the organic light emitting display panel 110 or may be integrated on the organic light emitting display panel 110. [

In addition, each source driver integrated circuit may be implemented by a chip on film (COF) method. In this case, one end of each source driver integrated circuit is bonded to at least one source printed circuit board, and the other end is bonded to the organic light emitting display panel 110.

The controller 140 supplies various control signals to the gate driver 120 and the data driver 130 to control the gate driver 120 and the data driver 130.

The controller 140 starts scanning according to the timing implemented in each frame, switches the input image data input from the outside according to the data signal format used by the data driver 130, and outputs the converted image data , And controls the data driving at a proper time according to the scan.

The controller 140 outputs various timing signals including a vertical synchronization signal Vsync, a horizontal synchronization signal Hsync, an input data enable (DE) signal, and a clock signal (CLK) From an external (e.g., host system).

The controller 140 outputs the switched image data by switching the input image data inputted from the outside according to the data signal format used by the data driver 130 and outputs the converted image data to the gate driver 120 and the data driver 130, A timing signal such as a vertical synchronization signal Vsync, a horizontal synchronization signal Hsync, an input data enable signal DE and a clock signal CLK to generate various control signals, 120, and the data driver 130, respectively.

For example, to control the gate driver 120, the controller 140 may include a gate start pulse (GSP), a gate shift clock (GSC), a gate output enable signal GOE Gate Output Enable), and the like.

Here, the gate start pulse GSP controls the operation start timing of one or more gate driver integrated circuits constituting the gate driver 120. The gate shift clock GSC is a clock signal commonly input to one or more gate driver integrated circuits, and controls the shift timing of the scan signal (gate pulse). The gate output enable signal GOE specifies the timing information of one or more gate driver ICs.

In order to control the data driver 130, the controller 140 may further include a source start pulse (SSP), a source sampling clock (SSC), and a source output enable signal (SOE) And outputs various data control signals (DCS: Data Control Signals).

Here, the source start pulse SSP controls the data sampling start timing of one or more source driver integrated circuits constituting the data driver 130. The source sampling clock SSC is a clock signal for controlling sampling timing of data in each of the source driver integrated circuits. The source output enable signal SOE controls the output timing of the data driver 130.

The controller 140 is connected to a source printed circuit board to which a source driver integrated circuit is bonded and a control printed circuit board (not shown) connected via a connection medium such as a flexible flat cable (FFC) or a flexible printed circuit (Control Printed Circuit Board).

A power controller (not shown) for controlling various voltages or currents to supply or supply various voltages or currents to the organic light emitting display panel 110, the gate driver 120, the data driver 130, . These power controllers are also referred to as power management ICs.

Each sub-pixel disposed in the organic light emitting display panel 110 in the organic light emitting diode display 100 may include a circuit element such as an organic light emitting diode (OLED), two or more transistors, and at least one capacitor. have.

The types and the number of the circuit elements constituting each subpixel can be variously determined according to the providing function, the design method, and the like.

2 illustrates an example of a sub-pixel structure disposed in the organic light emitting display panel 110 according to the present embodiments.

Referring to FIG. 2, each sub-pixel includes an organic light emitting diode OLED and a driving transistor DRT for driving the organic light emitting diode OLED.

The storage capacitor Cst electrically connected between the first node N1 and the second node N2 of the driving transistor DRT and the storage capacitor Cst electrically connected to the first node N1 of the driving transistor DRT, And a sensing transistor SENT electrically connected between the second node N2 of the driving transistor DRT and the reference voltage line RVL, And the like.

The organic light emitting diode OLED includes a first electrode (e.g., an anode electrode or a cathode electrode), an organic layer, and a second electrode (e.g., a cathode electrode or an anode electrode).

For example, the first electrode of the organic light emitting diode OLED may be connected to the second node N2 of the driving transistor DRT, and the second electrode of the organic light emitting diode OLED may be grounded have.

The driving transistor DRT is a transistor for driving the organic light emitting diode OLED by supplying a driving current to the organic light emitting diode OLED and includes a first node N1 corresponding to a gate node, And a third node N3 corresponding to a drain node or a source node.

The scan transistor SWT is a transistor for transferring a data voltage to the first node N1 of the drive transistor DRT and is electrically connected between the first node N1 of the drive transistor DRT and the data line DL And may be turned on by a scan signal applied to the gate node to transfer the data voltage to the first node N1 of the driving transistor DRT.

The storage capacitor Cst is electrically connected between the first node N1 and the second node N2 of the driving transistor DRT to maintain a constant voltage for one frame.

The sensing transistor SENT may be controlled by a signal electrically connected between the second node N2 of the driving transistor DRT and the reference voltage line RVL and applied to the gate node.

The sensing transistor SENT may apply the reference voltage Vref supplied through the reference voltage line RVL to the second node N2 of the driving transistor DRT.

In addition, the sensing transistor SENT may be used to sense deterioration of circuit elements such as the organic light emitting diode OLED and the driving transistor DRT included in the subpixel.

Hereinafter, the sensing of deterioration of a circuit element included in a subpixel is also referred to as "characteristic value sensing of subpixels" or "degradation sensing of subpixels ".

The characteristic value sensing of the subpixel may be performed after the organic light emitting display 100 is turned off or before the organic light emitting display 100 is turned on and before displaying an image, May be performed in the blank interval of the image frames displaying the image.

The characteristic value sensing of the subpixel initializes the second node N2 and the reference voltage line RVL by turning on the sensing transistor SENT, and then turns off the sensing transistor SENT. Then, the switching transistor SWT is turned on, the sensing data voltage is applied, and the switching transistor SWT is turned off to float the voltage of the second node N2.

The driving transistor DRT or the degree of deterioration of the organic light emitting diode OLED can be sensed by sensing the voltage of the second node N2 by turning on the sensing transistor SENT. By applying the compensation data according to the degree of deterioration, it is possible to prevent the luminance deviation due to deterioration of the circuit elements included in the subpixel.

Meanwhile, the organic light emitting diode display 100 provides a function of sensing a user's touch to the organic light emitting display panel 110 for displaying an image and using the sensed user for input processing.

The present embodiments provide a structure in which a plurality of touch electrodes are embedded in the organic light emitting display panel 110, thereby providing a touch screen built-in organic light emitting display device 100 capable of facilitating a fabrication process, minimizing thickness increase, Lt; / RTI >

3 is an exemplary sectional view of the organic light emitting display panel 110 in the touch screen built-in organic light emitting display 100 according to the present embodiments.

3, the cross-sectional structure of the OLED display panel 110 will be described.

A polyimide layer (LI02, Polyimide Layer (PI)) is placed on the substrate or the back plate L01.

The buffer layer L03 may be located on the polyimide layer L02 and the interlayer insulating film L04 may be located on the buffer layer L03.

A gate layer L05 may exist on the interlayer insulating film L04 and a gate electrode or the like may be formed in the gate layer L05 at necessary positions.

The gate insulating film L06 may be present on the gate layer L05.

A source / drain layer L07 may be present on the gate insulating film L06.

In the source / drain layer L07, signal lines such as a data line DL and a link line GL, and source / drain electrodes of various transistors can be formed.

A protective layer L08 may be present on the source / drain layer L07.

The planarization layer L09 may be positioned on the protective layer L08 and the first electrode layer L10 may be formed on the planarization layer L09 such that the first electrode E1 is formed at the emission position of each subpixel.

The bank layer L11 is located on the first electrode layer L10 and the organic light emitting layer L12 is located on the bank layer L11.

The second electrode layer L13 may be formed on the organic light emitting layer L12 in common to all the sub pixel regions.

On the second electrode layer L13, an encapsulating layer L14 for preventing penetration of moisture, air, and the like may be present.

In addition, a dam may be formed on the outer side of the panel so as to prevent the sealing layer L14 from falling down.

The sealing layer L14 may be a single layer or two or more layers may be laminated.

Further, the sealing layer L14 may be a metal layer, or two or more organic layers and inorganic layers may be stacked.

In the embodiment of FIG. 2, the encapsulation layer L14 is laminated with the first encapsulation layer L14a, the second encapsulation layer L14b and the third encapsulation layer L14c.

Each of the first sealing layer L14a, the second sealing layer L14b and the third sealing layer L14c may be an organic layer and an inorganic layer.

Meanwhile, referring to FIG. 3, the thickness of the sealing layer L14 can be set in consideration of the sealing performance.

The thickness of the sealing layer L14 may affect not only sealing performance but also RC delay and touch performance (touch sensitivity) during touch driving and touch sensing.

Therefore, the thickness of the sealing layer L14 should be set in consideration of the sealing performance, the RC delay, and the touch sensing performance.

Therefore, the thickness of the sealing layer L14 should be designed in consideration of the RC delay and the touch performance (touch sensitivity).

The OLED display panel 110 according to the present exemplary embodiment includes a color filter on encapsulation layer (COE) structure in which a color filter layer is disposed on the encapsulation layer L14, TE), and touch line (TL) are located in the TOE (Touch Sensor on Encapsulation Layer).

The COE and TOE structures are described in more detail below.

4 is a view illustrating the COE structure of the organic light emitting display panel 110 in the touch screen built-in organic light emitting display 100 according to the present embodiments.

Referring to FIG. 4, an organic light emitting diode (OLED) display panel 110 includes an encapsulation layer L14 to prevent organic materials of an organic light emitting diode (OLED) device from being exposed to oxygen, moisture, and the like.

The sealing layer L14 may be positioned on the second electrode E2 of the organic light emitting diode OLED, which is common to all the sub-pixels.

In the organic light emitting display panel 110, a color filter layer (CFL: color filter layer) 110 corresponding to the first electrode E1 of the organic light emitting diode OL1 and converting white light emitted from the organic light emitting layer EL into another color, Filter Layer).

For example, a red color filter, a green color filter, and a blue color filter may be formed in the color filter layer CFL.

Referring to FIG. 4, in the OLED panel 110, a color filter layer CFL is disposed on the encapsulation layer L14.

Such a structure is referred to as a color filter on encapsulation layer (COE) structure.

FIG. 5 is a diagram showing a TOE (Touch Sensor on Encapsulation Layer) structure of the organic light emitting display panel 110 in the touch screen built-in organic light emitting display 100 according to the present embodiments.

As described above, the touch driving signal is supplied to at least one of the plurality of touch electrodes TE corresponding to the touch sensor built in the organic light emitting display panel 110 according to the present invention during the touch driving period, The touch electrode TE to which the signal is applied may form a pointer and a capacitance (self-capacitance) corresponding to the touch operation means of the user.

Referring to FIG. 5, a plurality of touch electrodes TE, which is one of the touch sensor metals, may be disposed on the sealing layer L14.

This structure is called TOE (Touch Sensor on Encapsulation Layer) structure.

As described above, by designing the organic light emitting diode display panel 110 in a COE structure, the efficiency of light emission can be increased, and a circular polarizer can be eliminated as the case may be. By using the TOE structure, it is possible to implement the organic light emitting display panel 110 having a touch screen capable of providing a touch sensing function without a problem with the display function, and without complicating the panel manufacturing process, The organic light emitting display panel 110 may include a touch screen.

The touch sensor metal used for touch sensing may further include a plurality of touch lines TL for electrically connecting a plurality of touch electrodes TE to a touch driving circuit in addition to a plurality of touch electrodes TE .

The plurality of touch lines TL may also be located on the sealing layer L14.

As described above, since the touch line TL for electrically connecting the touch driving circuit and the touch electrode TE is disposed on the sealing layer L14, signal transmission for the touch driving and the touch sensing process is performed Can be effectively performed.

6 is a view illustrating an M-TOE (Multiple Touch Sensor Metal Layer on Encapsulation Layer) structure of the organic light emitting display panel 110 according to the present embodiments.

Referring to FIG. 6, the touch sensor metal may include a plurality of touch electrodes TE and a plurality of touch lines TL.

The plurality of touch electrodes TE and the plurality of touch lines TL may be arranged in different layers.

A plurality of touch lines TL are arranged in a first touch sensor metal layer TSML1 and a plurality of touch electrodes TE are arranged in a second touch sensor metal layer TSML2, As shown in FIG.

Conversely, a plurality of touch lines TL may be disposed in the second touch sensor metal layer TSML2, and a plurality of touch electrodes TE may be disposed in the first touch sensor metal layer TSML1.

The plurality of touch lines TL are electrically connected to the plurality of touch electrodes TE in a one-to-one correspondence.

Therefore, each of the plurality of touch lines TL is electrically connected to the corresponding touch electrode TE through the contact hole passing through the insulating layer, but is electrically connected to the other touch electrode TE They are electrically disconnected and not connected.

As described above, a plurality of touch electrodes TE and a plurality of touch lines TL are disposed on the encapsulation layer L14, but the touch sensor on encapsulation layer (TOE) disposed on the different touch sensor metal layers TSML and TSML2, The structure is called M-TOE (Multiple Touch Sensor Metal Layer on Encapsulation Layer) structure.

As described above, by designing the OLED display panel 110 in the M-TOE structure, the touch electrode TE and the touch line TL, which should not be electrically connected to each other, can be correctly disconnected.

Hereinafter, two examples of the mixed structure of the COE structure and the M-TOE structure when the organic light emitting display panel 110 according to the present embodiments has the COE structure and the M-TOE structure will be described.

7 is a view showing a first mixed structure of the COE structure and the M-TOE structure in the organic light emitting display panel 110 according to the present embodiments.

Referring to FIG. 7, a first touch sensor metal layer TSML1 having a first touch sensor metal, which may be a plurality of touch lines TL, and a second touch sensor metal, The second touch sensor metal layer TSML2 present is separated by the insulating layer IL.

Of course, each touch line TL is electrically connected to the corresponding touch electrode TE through a contact hole (present in the bridge portion) passing through the insulating layer IL.

The first touch sensor metal layer TSML1, the insulating layer IL, and the second touch sensor metal layer TSML2 form a built-in touch screen panel.

The touch sensor metal layer TSML1, the insulating layer IL and the second touch sensor metal layer TSML2 may be disposed between the sealing layer L14 and the color filter layer CFL.

That is, the sealing layer L14, the built-in touch screen panels TSML1, IL, and TSML2, and the color filter layer CFL may be stacked in this order.

As described above, since the color filter layer CFL is formed outside the built-in touch screen panels TSML1, IL and TSML2, the color-converted light from the color filter layer CFL is embedded in the built-in touch screen panels TSML1, IL, It is possible to prevent the distortion of the image. That is, the influence of the touch sensor structure on the display performance can be reduced.

8 is a cross-sectional view of a first mixed structure of the COE structure and the M-TOE structure in the organic light emitting display panel 110 according to the present embodiments.

Referring to FIG. 8, an overcoat layer (OCL) may be further disposed between the encapsulation layer L14 and the color filter layer CFL patterned with a plurality of color filters CF.

In the color filter layer CFL, a color filter CF of a corresponding color may be arranged for each sub-pixel region.

For example, when sub-pixels emitting red light, sub-pixels emitting green light, and sub-pixels emitting blue light are arranged in the organic light emitting display panel 110, a color filter (CFL) CF_R), a green color filter CF_G, and a blue color filter CF_B.

A black matrix (BM) may exist between adjacent two sub-pixels.

Referring to FIG. 8, a plurality of touch electrodes TE may be disposed between the encapsulation layer L14 and the overcoat layer OCL.

FIG. 8 shows one touch electrode TE of the mesh type positioned closest to the touch pad TP and one touch electrode TE electrically connected to the one touch electrode TE of the mesh type through the contact hole at the bridge portion. (TL).

The positions of the openings of the mesh-type touch electrode TE shown in Fig. 8 correspond to the positions of the light emitting regions of the respective sub pixels.

The position of the emission region of each subpixel corresponds to the position of the first electrode E1 of each subpixel and can correspond to the position of the color filter CF corresponding to each subpixel.

8, a first touch sensor metal layer TSML1 on which a plurality of touch lines TL are arranged, an insulating layer IL, a second touch sensor metal layer on which a plurality of touch electrodes TE are disposed, (TSML2) may be disposed between the encapsulation layer L14 and the overcoat layer OCL.

That is, the built-in touch screen panel composed of the first touch sensor metal layer TSML1, the insulating layer IL and the second touch sensor metal layer TSML2 is disposed between the sealing layer L14 and the overcoat layer OCL .

More specifically, a plurality of touch lines TL are disposed on the first touch sensor metal layer TSML1 on the sealing layer L14. An insulating layer IL is disposed on the first touch sensor metal layer TSML1. A plurality of touch electrodes TE are disposed on the second touch sensor metal layer TSML2 on the insulating layer IL.

An overcoat layer (OCL) is disposed on the second touch sensor metal layer (TSML2).

Referring to FIG. 8, a touch pad TP, which is electrically connected to a touch driving circuit, may exist in the first touch sensor metal layer TSML1 at an end of each of the plurality of touch lines TL.

FIG. 9 is a diagram illustrating steps of fabricating a first mixed structure of the COE structure and the M-TOE structure in the organic light emitting display panel 110 according to the present embodiments.

Referring to FIG. 9, after the encapsulation layer L14 is formed to have the structure as shown in FIG. 3, a built-in touch screen panel may be formed on the encapsulation layer L14.

That is, the touch line TL is disposed on the first touch sensor metal layer TSML1 on the sealing layer L14.

The end of the touch line TL may serve as a touch pad TP to which the touch driving circuit is electrically connected.

An insulating layer IL is disposed on the first touch sensor metal layer TSML1 and a plurality of touch electrodes TE are disposed on the second touch sensor metal layer TSML2.

Then, the encapsulation layer L14 with the built-in touch screen panel formed thereon is covered with the overcoat layer OCL.

At this time, a portion of the touch sensor metal (TE, TL, TP) constituting the built-in touch screen panel corresponding to the touch pad TP is exposed for connection with the touch driving circuit.

Then, a black matrix BM is formed on the overcoat layer OCL at each subpixel boundary point.

Then, the color filter CF corresponding to the sub pixel emission region is patterned.

The overcoat layer OCL is formed on the touch sensor metal such as the touch line TL, the touch pad TP and the touch electrode TE as described above, , TL) can be protected.

10 is a diagram illustrating a second mixed structure of the COE structure and the M-TOE structure in the organic light emitting display panel 110 according to the present embodiments.

Referring to FIG. 10, a touch sensor metal including a plurality of touch electrodes TE and a plurality of touch lines TL may be disposed on the color filter layer CFL.

That is, the sealing layer L14, the color filter layer CFL, and the touch sensor metals TE, TL, and TP may be stacked in this order.

More specifically, the first touch sensor metal layer TSML1 on which a plurality of touch lines TL are disposed is present on the color filter layer CFL on the encapsulation layer L14.

The insulating layer IL is present on the first touch sensor metal layer TSML1 on which a plurality of touch lines TL are arranged and the second touch sensor metal layer TSML2 ).

The second touch sensor metal layer TSML2 on which the first touch sensor metal layer TSML1, the insulating layer IL and the plurality of touch electrodes TE are disposed, on which a plurality of touch lines TL are arranged, And corresponds to a built-in touch screen panel built in the light emitting display panel 110. FIG.

As described above, by forming the touch sensor metal (for example, the touch electrode TE) close to the outermost periphery after forming all of the patterns related to the display function such as the sealing layer L14 and the color filter layer CFL, The distance between the touch pointer TE and the touch electrode TE is shortened, and the capacitance between the pointer and the touch electrode TE can be increased. Therefore, it can help to accurately determine the touch position and whether or not to touch.

11 is a cross-sectional view of a second mixed structure of the COE structure and the M-TOE structure in the organic light emitting display panel 110 according to the present embodiments.

Referring to FIG. 11, an overcoat layer (OCL) may further be disposed on the color filter layer CFL on which a plurality of color filters CF are patterned, on the sealing layer L14.

In the color filter layer CFL, a color filter CF of a corresponding color may be arranged for each sub-pixel region.

For example, when sub-pixels emitting red light, sub-pixels emitting green light, and sub-pixels emitting blue light are arranged in the organic light emitting display panel 110, a color filter (CFL) CF_R), a green color filter CF_G, and a blue color filter CF_B.

A black matrix (BM) may exist between adjacent two sub-pixels.

Referring to Fig. 11, as described above, the overcoat layer OCL is disposed on the color filter CF.

The touch sensor metal including a plurality of touch electrodes TE, a plurality of touch lines TL, and a plurality of touch pads TP may be disposed on the overcoat layer OCL.

More specifically, a first touch sensor metal layer TSML1 on which a plurality of touch lines TL are arranged, an insulating layer IL, a second touch sensor metal layer on which a plurality of touch electrodes TE are disposed, (TSML2) may be disposed on the overcoat layer (OCL).

A touch pad TP connected to each touch line TL or a part of each touch line TL is also present in the first touch sensor metal layer TSML1.

The touch electrode TE existing in the second touch sensor metal layer TSML2 is electrically connected to the touch line TLE existing in the first touch sensor metal layer TSML1 through the contact hole in the bridge portion .

FIG. 11 shows one touch electrode TE of the mesh type positioned closest to the touch pad TP and one touch electrode TE electrically connected to the one touch electrode TE of the mesh type through the contact hole at the bridge portion. (TL).

The positions of the openings of the mesh-type touch electrode TE shown in Fig. 11 correspond to the positions of the light emitting regions of the respective sub pixels.

The position of the emission region of each subpixel corresponds to the position of the first electrode E1 of each subpixel and can correspond to the position of the color filter CF corresponding to each subpixel.

FIG. 12 is a diagram illustrating steps of fabricating a second mixed structure of the COE structure and the M-TOE structure in the organic light emitting display panel 110 according to the present embodiments.

Referring to FIG. 12, after the encapsulation layer L14 is formed to have the structure shown in FIG. 3, a black matrix BM is formed on the encapsulation layer L14 at each subpixel boundary point.

Then, the color filter CF corresponding to the sub pixel emission region is patterned.

The overcoat layer OCL covers the encapsulation layer L14 patterned with the color filter CF and the black matrix BM.

Thereafter, a built-in touch screen panel can be formed on the overcoat layer OCL.

A touch electrode TE, a touch line TL, and a touch pad TP corresponding to a touch sensor metal constituting a built-in touch screen panel may be formed on the overcoat layer OCL.

More specifically, the touch line TL is located in the first touch sensor metal layer TSML1 on the overcoat layer OCL, the insulating layer IL is present on the first touch sensor metal layer TSML1, The touch electrode TE is positioned on the second touch sensor metal layer TSML2 on the touch panel IL.

The touch electrode TE located in the second touch sensor metal layer TSML2 may be electrically connected to the touch line TL located in the first touch sensor metal layer TSML1 through the contact hole in the bridge region.

A touch pad TP connected to the touch line TL or a touch pad TP corresponding to a part of the touch line TL exists in the first touch sensor metal layer TSML1.

As described above, by forming the overcoat layer OCL on the color filter layer CFL and forming the touch sensor metal TE, TL, TP on the color filter layer CFL, You can protect the following patterns. The touch electrode TE and the touch line TL are electrically influenced by other electrodes under the overcoat layer OCL and voltage wiring or signal line due to the overcoat layer OCL You can block it.

FIG. 13 is a plan view of the organic light emitting display panel 110 in which the touch screen panel is embedded in the touch screen built-in organic light emitting display device 100 according to the present embodiments.

13, the touch screen built-in organic light emitting diode display 100 according to the present embodiment includes an organic light emitting display panel 110 having a plurality of touch electrodes TE and a plurality of touch wirings TL, And a touch driving circuit 150 that outputs a touch driving signal to the touch electrode TE.

The plurality of touch electrodes TE may be divided and disposed in the organic light emitting display panel 110 and connected to the touch driving circuit 150 through the touch wiring TL.

The touch wiring TL is a wiring for applying a TX signal output from the touch driving circuit 150 to the touch electrode TE and a wiring for transmitting the RX signal from the touch electrode TE to the touch driving circuit 150 Lt; / RTI >

The touch wiring TL for transmitting the TX signal can be arranged in a direction parallel to the gate line GL arranged in the organic light emitting display panel 110 and the touch wiring TL for transmitting the RX signal can be arranged in the organic light emitting display And may be disposed in a direction crossing the gate line GL disposed on the panel 110. [

The touch driving circuit 150 sequentially outputs TX signals to the plurality of touch electrodes TE in the touch sensing period.

When the user touches the organic light emitting display panel 110 in the state that the TX signal is applied to the touch electrode TE, the capacitance of the touch electrode TE is changed.

The touch driving circuit 150 senses the capacitance change of the touch electrode TE using the RX signal received from the touch electrode TE and senses the touch of the user with respect to the organic light emitting display panel 110. [

Since the organic light emitting display panel 110 performs the display driving and the touch sensing, the touch driving signal is applied while the scan signal is applied to the gate line GL disposed in the organic light emitting display panel 110, .

In this case, the touch sensing signal may include noise due to the gate line GL to which the scan signal is applied. If noise is included in the touch sensing signal, the accuracy of the touch sensing may be reduced.

FIG. 14 shows the timing of signals output for display driving and touch sensing in the organic light emitting display 100 with a touch screen built-in according to the present embodiments.

Referring to FIG. 14, a scan signal for driving a display is sequentially output to a gate line GL disposed in the organic light emitting display panel 110.

Then, a TX signal for touch sensing is sequentially applied to the organic light emitting display panel 110 through the touch wiring TL arranged in parallel with the gate line GL.

Therefore, when the scan signal for driving the gate line GL and the TX signal for driving the touch electrode TE are overlapped with each other, the gate signal is applied to the gate line GL to which the scan signal is applied There is a problem that the noise caused by the noise is included.

The present embodiments are directed to an organic light emitting diode (OLED) display device 100 capable of performing display driving and touch recognition, using a touch sensing signal that does not include noise due to driving of a gate line GL, It provides a way to sense touch.

FIGS. 15 and 16 are views for explaining a method of performing display driving and touch sensing in the organic light emitting display device 100 with a built-in touch screen according to the present embodiments.

FIG. 15 shows a timing at which the organic light emitting display 100 with the touch screen built-in according to the present embodiments performs the display driving and the touch sensing. FIG. 15 shows one image frame period including the active period and the blank period.

Referring to 1501 in FIG. 15, there is a blank interval between an active period and an active period in which display driving is performed in one image frame period.

In this case, in order to perform touch sensing, a touch driving signal may be applied to the touch electrode TE in the active period in which the display driving is performed, and the touch sensing may be performed.

When the display driving and the touch sensing are simultaneously performed, there is a problem that the noise due to the driving of the gate line may include the touch sensing signal as described above.

Accordingly, the touch-screen built-in organic light emitting diode display 100 according to the exemplary embodiments of the present invention provides a method of dividing a period for performing display driving and a period for performing touch sensing.

Referring to 1502 in FIG. 15, the touch sensing can be performed by time-sharing a section performing display drive in an active section and a section performing touch sensing among one image frame section.

In the example of 1502, the display driving period and the touch sensing period are alternated, but the active period may be divided to perform the display driving and the touch sensing.

The gate driver 120 of the OLED display 100 sequentially outputs a scan signal to the gate line GL disposed in the organic light emitting display panel 110 in the display driving period. Then, the touch driving circuit 150 does not output the touch driving signal in the section in which the scan signal is outputted.

When the touch sensing period is reached after the display driving period, the gate driver 120 does not output a scan signal and the touch driving circuit 150 outputs a touch driving signal to the touch electrode TE.

At this time, the touch driving circuit 150 may output the touch driving signal to the touch electrode TE disposed in the region where the gate line GL to which the scan signal is applied in the previous display driving period.

That is, the display driving section and the touch sensing section are time-divided to perform display driving and touch sensing, and scan signals or touch driving signals are sequentially applied to the respective regions of the organic light emitting display panel 110 in each section.

Meanwhile, the touch screen built-in organic light emitting diode display 100 according to the present invention uses a blank interval after the active period in performing touch sensing.

As shown in 1502, the display driving and the touch sensing are alternately performed in the active period, and the blank interval is a period in which the scan signal for the display driving is not applied, so that the touch sensing is performed.

Accordingly, the touch sensing can be performed without being affected by the noise caused by the driving of the gate line GL, and the accuracy and efficiency of the touch sensing can be improved by utilizing the blank interval of the image frame interval.

At this time, the organic light emitting display 100 performs the characteristic value sensing of the subpixels in order to compensate the deterioration of the circuit elements included in the subpixels, and the characteristic value sensing of the subpixels can be performed in the blank interval after the active period.

Therefore, when the touch sensing is performed using the blank interval, a period in which the scan signal is applied for sensing / compensating the characteristic value of the sub-pixel may be overlapped with the touch sensing interval. In this case, . ≪ / RTI >

The present embodiments utilize the blank interval in performing the touch sensing by the OLED display 100 and time-division the touch sensing period by considering the characteristic value sensing / compensation period of the subpixel of the OLED display 100, Sensing is performed.

Referring to 1503 of FIG. 15, the display driving and the touch sensing are alternately performed in different time intervals in the active period of the video frame period.

In the blank period, the touch sensing is performed because the scan signal for driving the display is not applied. In the blank period, the touch sensing is performed by dividing the time interval in which the scan signal for sensing the characteristic value of the subpixel is applied and the time interval .

Accordingly, in the OLED display 100, the display driving period and the touch sensing period are time-divided by performing the display driving and the touch sensing, so that the noise due to the driving of the gate line GL to the touch sensing signal .

In addition, a touch sensing is performed in a blank interval in which a scan signal for display driving is not output during an image frame interval, and a period in which a scan signal for sensing / compensating a sub pixel's characteristic value is output in a blank interval. So that the accuracy and efficiency of the touch sensing can be improved.

16 illustrates an example of a method of performing display driving, touch sensing, and sensing / compensation of characteristic values of subpixels in the touch-screen built-in organic light emitting diode display 100 according to the present embodiments.

Referring to FIG. 16, the touch screen built-in organic light emitting display 100 according to the present embodiment divides the organic light emitting display panel 110 into a first area and a second area, and displays the display driving area and the touch sensing area And performs display driving and touch sensing by time division.

The gate driver 120 of the organic light emitting diode display 100 sequentially applies the scan signals to the gate lines GL arranged in the first region of the organic light emitting display panel 110 in the display driving period of the active period of the image frame period .

The touch driving circuit 150 sequentially applies the touch driving signal to the touch electrodes TE arranged in the first area in the touch sensing period after the scan signals are sequentially output to the gate line GL arranged in the first area, .

When the touch driving circuit 150 outputs a touch driving signal to the touch electrode TE disposed in the first area, the gate driver 120 supplies the touch driving signal to the first electrode of the organic light emitting display panel 110, And sequentially outputs a scan signal to the gate line GL.

Therefore, by distinguishing the timing at which the gate line GL is driven and the timing at which the touch driving signal is applied with the touch electrode TE, noise caused by driving the gate line GL is prevented from affecting the touch sensing signal .

After the gate driver 120 sequentially outputs the scan signals to the gate line GL disposed in the second area, the touch driving circuit 150 applies the touch driving signal TE to the touch electrodes TE arranged in the second area, And may output a touch driving signal in a blank interval after the active period.

At this time, since the scan signal for sensing / compensating the characteristic value of the subpixel is applied in the blank section, the touch driving signal is outputted in the section distinguished from the section in which the scan signal is applied in the blank section.

As an example, a scan signal for application of a sensing data voltage for sensing a characteristic value of a subpixel in a blank section may be output.

In FIG. 16, the characteristic values of subpixels arranged in the entire area of the organic light emitting display panel 110 are sensed. However, only characteristic values of subpixels arranged in some areas may be sensed.

When the scan signal for applying the sensing data voltage passes, the touch driving circuit 150 sequentially outputs the touch driving signal to the touch electrode TE arranged in the second area.

Since the scan signal for compensation according to the characteristic value sensing of the subpixel may be applied in the last section of the blank section, the touch driving circuit 150 applies the first scan signal for sensing the characteristic value of the subpixel in the blank interval And outputs a touch driving signal in a section between the section and the section in which the second scan signal is applied.

Therefore, according to the embodiments, a touch driving signal is output using the blank interval of the image frame period, touch sensing is enabled, and a touch signal is divided into a touch signal Sensing is performed.

Thus, it is possible to prevent the touch sensing signal in the blank section from being affected by the noise due to the driving of the gate line GL.

17 shows an example of timing in which the touch-screen built-in organic light emitting diode display 100 performs display drive, touch sensing, and sensing / compensation of the characteristic value sensing / compensation of the subpixel by time division.

17, 1080 gate lines GL are arranged in the organic light emitting display panel 110 and 30 touch wirings TL are arranged in a direction parallel to the gate lines GL will be.

The gate driver 120 sequentially applies the scan signals from the first gate line GL to the 540th gate line GL arranged at the upper end of the organic light emitting display panel 110 in the display driving period of the active period of the image frame period .

The touch driving circuit 150 outputs the scan signal from the first touch wiring TL connected to the touch electrode TE disposed at the upper end of the organic light emitting display panel 110 to the 15th And sequentially applies a TX signal to the touch wiring TL.

When the touch driver circuit 150 outputs the TX signal by the 15th touch wiring line TL, the gate driver 120 supplies the TX signal to the 541st gate line (not shown) disposed at the lower end of the OLED display panel 110 in the display driving period of the active section, And sequentially outputs the scan signals from the gate line GL to the 1080th gate line GL.

In the blank interval after the active period, the touch driving circuit 150 can apply the TX signal from the 16th touch wiring TL.

At this time, since a scan signal for sensing / compensating the characteristic value of the subpixel is output in the blank section, the touch driving circuit 150 outputs the first scan signal and the second scan signal for sensing / compensating the characteristic value of the subpixel in the blank section, A TX signal is applied from the 16th touch wiring line TL to the 30th touch wiring line TL.

Accordingly, in the present embodiment, touch sensing is performed in an interval that is different from a period in which a scan signal for sensing / compensating the characteristic value of a subpixel is applied in a blank interval, so that in the active interval and the blank interval, It is possible to prevent the noise caused by the driving from deteriorating the accuracy of the touch sensing signal.

FIG. 18 shows a process of driving the touch-screen-integrated organic light emitting display 100 according to the present embodiments.

Referring to FIG. 18, the gate driver 120 of the touch-screen-integrated organic light emitting diode display 100 according to the present exemplary embodiment displays the first And sequentially outputs the scan signals to the gate lines GL arranged in the area (S1800).

The touch driving circuit 150 sequentially outputs the touch driving signal to the touch electrode TE arranged in the first area before the second section which is the display driving section when the first section has elapsed (S1810).

The gate driver 120 sequentially outputs the scan signals to the gate line GL disposed in the second region of the OLED display panel 110 in the second period of the active period in operation S1820, And outputs a scan signal for characteristic value sensing (S1830).

The touch driving circuit 150 sequentially outputs the touch driving signals to the touch electrodes TE disposed in the second area of the organic light emitting display panel 110 after the scan signals for sensing the characteristic values of the sub pixels are output in the blank interval (S1840).

According to the present exemplary embodiments, it is possible to provide a structure capable of incorporating a touch screen panel on the organic light emitting display panel 110, thereby minimizing an increase in thickness of the organic light emitting display device 100, 100) can be easily manufactured.

In addition, in the touch-screen-integrated organic light emitting diode display device 100, the display driving period and the touch sensing period are time-divided by performing display driving and touch sensing, so that noise due to the driving of the gate line GL affects the touch sensing signal ≪ / RTI >

In addition, by utilizing the blank period in which the scan signal for driving the display is not applied as the touch sensing period, the display driving and the touch sensing can be efficiently performed in a time-sharing manner.

In addition, touch sensing is performed by distinguishing a period in which a scan signal for sensing / compensating characteristic values of a subpixel is applied in a blank interval, so that touch sensing in a blank interval is not affected by noise due to driving of the gate line GL So that the accuracy of the touch sensing can be improved in the active section and the blank section.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. In addition, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Touch-screen integrated organic light emitting display
110: organic light emitting display panel 120: gate driver
130: Data driver 140: Controller
150: Touch driving circuit

Claims (17)

An organic light emitting display panel having a plurality of gate lines, a plurality of touch electrodes, and a plurality of touch lines connected to the plurality of touch electrodes;
A scan signal for driving display of subpixels arranged in the organic light emitting display panel in an active period of one image frame section is outputted and a scan signal for deterioration sensing of the subpixel is output in a blank section of the image frame section A gate driver; And
A touch driving circuit for outputting a touch driving signal to the plurality of touch electrodes during a period during which the scan signal is not output from the gate driver in the active period and the blank period,
The organic light emitting display device comprising:
The method according to claim 1,
The touch-
When a first period in which a scan signal for driving the display of the subpixels is output in the active period elapses, a scan signal for driving the display of the subpixel is output before the scan signal is outputted in the first period, And outputs the touch driving signal to the touch electrode disposed in a region where the applied gate line is disposed.
The method according to claim 1,
The touch-
When a last period in which the scan signal for driving the display of the subpixels in the active period elapses, a scan signal for the deterioration sensing of the subpixel is output in the blank interval, And outputs the touch driving signal to the touch electrode disposed in a region where the gate line is disposed.
The method according to claim 1,
The touch-
A touch screen for outputting the touch driving signal in a section between a period in which a first scan signal for the deterioration sensing of the subpixel is output and a period in which a second scan signal for sensing deterioration of the subpixel is output, A built-in organic light emitting display.
The method according to claim 1,
The touch-
A touch screen for sequentially applying a TX signal through the touch wiring arranged in parallel with the gate line in a section for outputting the touch driving signal and simultaneously receiving an RX signal through the touch wiring arranged crossing the gate line, A built-in organic light emitting display.
The method according to claim 1,
The organic light emitting display panel includes:
An encapsulating layer,
Further comprising a color filter layer located on the sealing layer,
Wherein the plurality of touch electrodes are positioned on the sealing layer.
The method according to claim 6,
Wherein the plurality of touch electrodes comprise:
And a color filter layer disposed between the sealing layer and the color filter layer.
8. The method of claim 7,
Further comprising an overcoat layer disposed between the encapsulation layer and the color filter layer,
Wherein the plurality of touch electrodes comprise:
Wherein the organic light emitting display device is disposed between the encapsulation layer and the overcoat layer.
The method according to claim 6,
Wherein the plurality of touch electrodes comprise:
Wherein the organic light emitting display device is disposed on the color filter layer.
10. The method of claim 9,
Further comprising an overcoat layer disposed on the color filter layer,
Wherein the plurality of touch electrodes comprise:
And the organic light emitting display device is disposed between the color filter layer and the overcoat layer.
Outputting a scan signal for driving display of subpixels arranged in a first area of the organic light emitting display panel in an active period of one image frame section;
Outputting a touch driving signal to a touch electrode arranged in the first area when a section for outputting the scan signal has elapsed;
And outputs a scan signal for driving a display of subpixels arranged in a second region of the organic light emitting display panel in the active period when a section for outputting the touch driving signal has elapsed, Outputting a scan signal for sensing deterioration of a pixel; And
And outputting a touch driving signal to the touch electrode disposed in the second region when a section for outputting the scan signal in the blank region has elapsed
And a driving circuit for driving the organic light emitting diode.
12. The method of claim 11,
Wherein the step of outputting the touch driving signal to the touch electrode disposed in the second area comprises:
A touch screen for outputting the touch driving signal in a section between a period in which a first scan signal for the deterioration sensing of the subpixel is output and a period in which a second scan signal for sensing deterioration of the subpixel is output, A method of driving a built-in organic light emitting display device.
12. The method of claim 11,
The method comprising: outputting a touch driving signal to a touch electrode disposed in the first area; and outputting a touch driving signal to the touch electrode disposed in the second area,
Sequentially outputting a TX signal through a touch wiring arranged in parallel with a gate line to which the scan signal is applied; And
And simultaneously receiving an RX signal through a touch wiring disposed in an intersection with the gate line during a period in which the TX signal is output.
A plurality of touch electrodes disposed on the organic light emitting display panel during a period in which a scan signal for display drive or deterioration sensing of subpixels arranged in the organic light emitting display panel is not output in an active section and a blank section of one image frame section, A TX signal output unit for outputting a TX signal;
An RX signal receiving unit receiving an RX signal from the plurality of touch electrodes in a section in which the TX signal is output; And
A touch sensing unit for sensing a touch on the organic light emitting display panel using the received RX signal,
And a touch panel.
15. The method of claim 14,
The TX signal output unit includes:
When a first period in which a scan signal for driving the display of the subpixels is output in the active period elapses, a scan signal for driving the display of the subpixel is output before the scan signal is outputted in the first period, And outputs the TX signal to the touch electrode disposed in an area where the applied gate line is disposed.
15. The method of claim 14,
The TX signal output unit includes:
When a last period in which the scan signal for driving the display of the subpixels in the active period elapses, a scan signal for the deterioration sensing of the subpixel is output in the blank interval, And outputs the TX signal to the touch electrode disposed in a region where the gate line is disposed.
15. The method of claim 14,
The TX signal output unit includes:
A touch driving circuit for outputting the TX signal in a section between a period during which the first scan signal for the deterioration sensing of the subpixel is outputted and a period during which the second scan signal for detecting deterioration of the subpixel is outputted, .

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