KR101717986B1 - Organic Light Emitting Display Device - Google Patents

Abstract

The present invention relates to an organic light emitting display device capable of sufficiently securing a threshold voltage compensation period and an initialization period.
The organic light emitting display device according to the exemplary embodiment of the present invention sequentially supplies scanning signals having a width equal to or greater than 2H to the scanning lines to overlap the partial scanning lines and supplies emission control signals to the emission control lines formed in parallel with the scanning lines A scan driver for driving the scan driver; A data driver for supplying a data signal to data lines; And pixels located at intersections of the scan lines and the data lines; Each of the pixels includes an organic light emitting diode having a cathode electrode connected to a second power source; A first transistor for controlling an amount of current supplied from the first power source connected to the first electrode to the organic light emitting diode; A second transistor connected between the gate electrode and the second electrode of the first transistor and turned on when a scan signal is supplied to the current scan line; A third transistor connected between the data line and the second node and turned on when a scan signal is supplied to the next scan line; A first capacitor connected between the gate electrode of the first transistor and the second node; And a fifth transistor for turning on the scan line when the scan signal is supplied to the previous scan line to supply the first voltage to the gate electrode of the first transistor.

Description

[0001] The present invention relates to an organic light emitting display device,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an organic light emitting display, and more particularly, to an organic light emitting display device capable of sufficiently securing a threshold voltage compensation period and an initialization period.

2. Description of the Related Art Recently, various flat panel display devices capable of reducing weight and volume, which are disadvantages of cathode ray tubes (CRTs), have been developed. Examples of flat panel display devices include a liquid crystal display, a field emission display, a plasma display panel, and an organic light emitting display device.

Among the flat panel display devices, the organic light emitting display device displays an image using an organic light emitting diode that generates light by recombination of electrons and holes, and has advantages of fast response speed and low power consumption .

An organic light emitting display includes a plurality of pixels arranged in a matrix at intersections of a plurality of data lines, scan lines, and power supply lines. The pixels are typically composed of an organic light emitting diode, two or more transistors including a driving transistor, and one or more capacitors.

Such an organic light emitting display device has an advantage in that power consumption is small, but the amount of current flowing to the organic light emitting diode changes according to the threshold voltage deviation of the driving transistor included in each of the pixels, thereby causing a display irregularity. That is, the characteristics of the driving transistor are changed according to manufacturing process parameters of the driving transistor included in each of the pixels. In fact, it is impossible to manufacture all the transistors of an organic light emitting display device to have the same characteristics at the present process stage, thereby causing a threshold voltage deviation of the driving transistor.

In order to overcome such a problem, a method of adding a compensation circuit including a plurality of transistors and capacitors to each of the pixels has been proposed. The compensation circuit included in each of the pixels charges the voltage corresponding to the threshold voltage of the driving transistor and accordingly compensates for the deviation of the driving transistor.

Meanwhile, in recent years, a method of driving at a frequency of 120 Hz or more is required in order to eliminate a motion blur phenomenon. However, when the high-speed driving of 120 Hz or more is performed, the threshold voltage charging period of the driving transistor is shortened, thereby making it impossible to compensate the threshold voltage of the driving transistor. Further, in the high-speed driving of 120 Hz or more, the initialization period for initializing the gate electrode of the driving transistor to a predetermined voltage can not be sufficiently secured before the threshold voltage is compensated, thereby making it impossible to perform stable compensation.

Therefore, an object of the present invention is to provide an organic light emitting display device capable of sufficiently securing a threshold voltage compensation period and an initialization period.

The organic light emitting display device according to the exemplary embodiment of the present invention sequentially supplies scanning signals having a width equal to or greater than 2H to the scanning lines to overlap the partial scanning lines and supplies emission control signals to the emission control lines formed in parallel with the scanning lines A scan driver for driving the scan driver; A data driver for supplying a data signal to data lines; And pixels located at intersections of the scan lines and the data lines; Each of the pixels includes an organic light emitting diode having a cathode electrode connected to a second power source; A first transistor for controlling an amount of current supplied from the first power source connected to the first electrode to the organic light emitting diode; A second transistor connected between the gate electrode and the second electrode of the first transistor and turned on when a scan signal is supplied to the current scan line; A third transistor connected between the data line and the second node and turned on when a scan signal is supplied to the next scan line; A first capacitor connected between the gate electrode of the first transistor and the second node; And a fifth transistor for turning on the scan line when the scan signal is supplied to the previous scan line to supply the first voltage to the gate electrode of the first transistor.

A fourth transistor for supplying a second voltage to the second node when a scan signal is supplied to the current scan line; and a fourth transistor connected between the second electrode of the first transistor and the organic light emitting diode, And a sixth transistor which is turned off when a light emission control signal is supplied to the control line. And a second capacitor connected between the second node and the first power supply. And a second capacitor connected between the gate electrode of the first transistor and the first power source. And the fourth transistor is connected between the second node and the first power source. The fourth transistor is connected between the second node and a reference power supply for supplying the second voltage, and the second voltage is a voltage over the data signal.

The fifth transistor is connected to the gate electrode of the first transistor and the anode electrode of the organic light emitting diode. And the fifth transistor is connected between the gate electrode of the first transistor and the second power source. The fifth transistor is connected between a gate electrode of the first transistor and an initial power supply for supplying the first voltage, and the first voltage is lower than the data signal. The current scan line is an i-th (i is a natural number) scan line, the previous scan line is an i-2 scan line, and the next scan line is an (i + 3) scan line. The current emission control line is an i-th emission control line. The scan driver supplies the scan signal for a period of 3H, and the scan signal supplied to the i-th scan line overlaps the scan signal supplied to the (i-1) th scan line for 2H. The scan driver sequentially supplies the emission control signals to the emission control lines, and the emission control signal supplied to the i < th > emission control line overlaps with the scan signals supplied to the i-2 scan line to the (i + 3) . The scan driver supplies the emission control signals to the emission control lines simultaneously during a period in which the scan signals are sequentially supplied to all the scan lines and supplies the emission control signals to the emission control lines after the supply of the scan signals is stopped. . The data driver supplies data signals to the data lines every 1H period.

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According to the organic light emitting display device of the present invention, the threshold voltage compensation period and the initialization period can be set to 2H or longer, respectively, and thus the present invention can be applied to high-speed driving.

1 is a view illustrating an organic light emitting display device according to an embodiment of the present invention.
2 is a circuit diagram showing a first embodiment of the pixel shown in Fig.
3 is a waveform diagram showing a driving method of the first embodiment of the pixel shown in Fig.
4 is a waveform diagram showing a driving method of the second embodiment of the pixel shown in Fig.
5 is a circuit diagram showing a second embodiment of the pixel shown in Fig.
6 is a circuit diagram showing a third embodiment of the pixel shown in Fig.
7 is a circuit diagram showing a fourth embodiment of the pixel shown in Fig.
8 is a graph showing the amount of current corresponding to the data signal voltage of the pixel shown in FIG.
9 is a circuit diagram showing a fifth embodiment of the pixel shown in Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view illustrating an organic light emitting display according to an embodiment of the present invention.

1, an organic light emitting display according to an exemplary embodiment of the present invention includes a plurality of pixels OLEDs disposed at intersections of scan lines S1 to Sn, emission control lines E1 to En, and data lines D1 to Dm, A scan driver 110 for driving the scan lines S1 to Sn and the emission control lines E1 to En and a scan driver 110 for driving the data lines D1 to Dm And a timing controller 150 for controlling the scan driver 110 and the data driver 120. The scan driver 110 and the data driver 120 are controlled by the timing controller 150 and the data driver 120, respectively.

The scan driver 110 receives the scan driving control signal SCS from the timing controller 150. The scan driver 110 receiving the scan driving control signal SCS generates a scan signal and sequentially supplies the generated scan signal to the scan lines S1 to Sn.

Here, the scan driver 110 supplies a scan signal having a width equal to or larger than 2H (where "H" means a horizontal period) while overlapping the scan lines S1 to Sn with the previous scan lines for some periods. For convenience of explanation, it is assumed that the scanning signal has a width of 3H, and the scanning signal supplied to the i-th (i is a natural number) scanning line is overlapped with the scanning signal supplied to the (i-1) do.

The scan driver 110, which receives the scan driving control signal SCS, generates an emission control signal and sequentially supplies the generated emission control signals to the emission control lines E1 to En. Here, the emission control signal supplied to the i < th > emission control line Ei is supplied so as to overlap the scan signals supplied to the i-2 th scan line to the (i + 3) th scan line. On the other hand, the scan signal is set to a voltage (for example, a low voltage) at which the transistor included in the pixel 140 can be turned on, and the emission control signal can be turned on (For example, a high voltage).

The data driver 120 receives the data driving control signal DCS from the timing controller 150. The data driver 120 receiving the data driving control signal DCS supplies the data signals to the data lines D1 to Dm when the scanning signals are supplied.

The timing controller 150 generates a data driving control signal DCS and a scan driving control signal SCS in response to externally supplied synchronization signals. The data driving control signal DCS generated by the timing control unit 150 is supplied to the data driving unit 120 and the scanning driving control signal SCS is supplied to the scan driving unit 110. The timing control unit 150 receives And supplies the data (Data) supplied from the data driver 120 to the data driver 120.

The pixel unit 130 receives the first power ELVDD and the second power ELVSS from the outside and supplies the first power ELVDD and the second power ELVSS to the respective pixels 140. Each of the pixels 140 supplied with the first power ELVDD and the second power ELVSS generates light corresponding to the data signal. Here, the first power ELVDD is set to a higher voltage than the second power ELVSS to supply a predetermined current to the organic light emitting diode.

1, the pixels 140 are connected to one scanning line, whereas the pixels 140 of the present invention are actually connected to three scanning lines. For example, the pixel 140 located on the i-th horizontal line is connected to the i-2th scan line Si-2, the i-th scan line Si, and the (i + 3) th scan line Si + 3.

2 is a view showing a pixel according to the first embodiment of the present invention. In FIG. 2, for the sake of convenience of description, a pixel 140 located at the i-th horizontal line and connected to the m-th data line Dm is shown.

Referring to FIG. 2, the pixel 140 according to the first embodiment of the present invention includes an organic light emitting diode (OLED) and a pixel circuit 142 for controlling the amount of current supplied to the organic light emitting diode (OLED).

The anode electrode of the organic light emitting diode (OLED) is connected to the pixel circuit 142, and the cathode electrode is connected to the second power source ELVSS. The organic light emitting diode OLED generates light having a predetermined luminance corresponding to the current supplied from the pixel circuit 142.

The pixel circuit 142 initializes the gate electrode of the first transistor M1 (i.e., the driving transistor) to a predetermined voltage during a period in which the scanning signal is supplied to the i-2 scanning line, And charges the voltage corresponding to the threshold voltage of the first transistor M1 (i.e., the driving transistor) during the period in which the signal is supplied. Then, the pixel circuit 142 charges the voltage corresponding to the data signal during the period in which the scan signal is supplied to the (i + 3) th scan line. Further, the pixel circuit 142 supplies a current corresponding to the charged voltage to the organic light emitting diode OLED after the supply of the emission control signal to the i < th > emission control line Ei is stopped. To this end, the pixel circuit 142 includes first to sixth transistors M1 to M6, a first capacitor C1, and a second capacitor C2.

A gate electrode of the first transistor M1 is connected to the first node N1, and a first electrode of the first transistor M1 is connected to the first power supply ELVDD. The second electrode of the first transistor M1 is connected to the first electrode of the sixth transistor M6. The first transistor M1 controls the amount of current supplied from the first power source ELVDD to the second power source ELVSS via the organic light emitting diode OLED in response to the voltage applied to the first node N1. do.

The gate electrode of the second transistor M2 is connected to the ith scan line Si, and the first electrode of the second transistor M2 is connected to the second electrode of the first transistor M1. The second electrode of the second transistor M2 is connected to the first node N1. The second transistor M2 is turned on when a scan signal is supplied to the ith scan line Si to electrically connect the gate electrode of the first transistor M1 and the second electrode. In this case, the first transistor M1 is connected in a diode form.

The gate electrode of the third transistor M3 is connected to the (i + 3) th scanning line Si + 3, and the first electrode of the third transistor M3 is connected to the data line Dm. The second electrode of the third transistor M3 is connected to the second node N2. The third transistor M3 is turned on when the scan signal is supplied to the (i + 3) th scan line Si + 3, thereby electrically connecting the data line Dm and the second node N2.

The gate electrode of the fourth transistor M4 is connected to the ith scan line Si, and the first electrode of the fourth transistor M4 is connected to the first power source ELVDD. The second electrode of the fourth transistor M4 is connected to the second node N2. The fourth transistor M4 is turned on when a scan signal is supplied to the ith scan line Si to supply the voltage of the first power source ELVDD to the second node N2.

The gate electrode of the fifth transistor M5 is connected to the i-2 scan line Si-2, and the first electrode of the fifth transistor M5 is connected to the first node N1. The second electrode of the fifth transistor M5 is connected to the anode electrode of the organic light emitting diode OLED (i.e., the third node N3). The fifth transistor M5 is turned on when a scan signal is supplied to the i-2 scan line Si-2 to supply the voltage of the third node N3 to the first node N1.

The gate electrode of the sixth transistor M6 is connected to the i-th emission control line Ei, and the first electrode of the sixth transistor M6 is connected to the second electrode of the first transistor M1. The second electrode of the sixth transistor M6 is connected to the third node N3. The sixth transistor M6 is turned off when the emission control signal is supplied to the ith emission control line Ei, and is turned on in other cases.

The first capacitor C1 is connected between the first node N1 and the second node N2. The first capacitor C1 charges the voltage corresponding to the threshold voltage of the first transistor M1.

The second capacitor C2 is connected between the second node N2 and the first power source ELVDD. The second capacitor C2 charges the voltage corresponding to the data signal.

3 is a waveform diagram showing a driving method according to the first embodiment of the present invention.

Referring to FIG. 3, the emission control signal is supplied to the emission control line Ei during the first period T1 to the fourth period T4. When the emission control signal is supplied to the emission control line Ei, the sixth transistor M6 is turned off.

The scan signal is supplied to the i-2 scan line Si-2 during the first period T1. When the scan signal is supplied to the i-2 scan line Si-2, the fifth transistor M5 is turned on. When the fifth transistor M5 is turned on, the voltage of the third node N3 is supplied to the first node N1. Here, the voltage of the third node N3 is set to the sum of the threshold voltage of the organic light emitting diode OLED and the second power ELVSS. The first period T1 is set as the initialization period for changing the voltage of the first node N1 to the voltage of the third node N3.

And a scan signal is supplied to the i-th scan line Si during the second period T2. When the scan signal is supplied to the ith scan line Si, the second transistor M2 and the fourth transistor M4 are turned on. When the fourth transistor M4 is turned on, the voltage of the first power ELVDD is supplied to the second node N2. When the second transistor M2 is turned on, the first node N1 and the second electrode of the first transistor M1 are electrically connected, thereby setting the first transistor M1 in a diode form.

On the other hand, in the second period T2, the scan signal supplied to the i-2 scan line Si-2 and the scan signal supplied to the i-th scan line Si are overlapped with each other for a period of 1H. In this case, the turn-on time of the second transistor M2, the fourth transistor M4, and the fifth transistor M5 is overlapped during the 1H period, thereby ensuring the reliability of driving.

In more detail, when the second transistor M2 and the fourth transistor M4 are turned on after the fifth transistor M5 is turned off in the high-speed driving, Is displayed. Accordingly, in the present invention, the scanning signals supplied to the i-2 scanning line Si-2 and the scanning signals supplied to the i-th scanning line Si are superimposed so that an image of uniform luminance can be displayed .

In the third period T3, the supply of the scanning signal to the i-2 scanning line Si-2 is stopped. When the supply of the scan signal to the i-2 scan line Si-2 is interrupted, the fifth transistor M5 is turned off. When the fifth transistor M5 is turned off, the voltage of the first node N1 is set to a voltage value obtained by subtracting the threshold voltage of the first transistor M1 from the first power ELVDD. At this time, the first capacitor C1 charges the voltage corresponding to the difference voltage between the second node N2 and the first node N1, that is, the threshold voltage of the first transistor M1.

During the fourth period T4, a scan signal is supplied to the (i + 3) th scan line Si + 3. When the scan signal is supplied to the (i + 3) th scan line Si + 3, the third transistor M3 is turned on. When the third transistor M3 is turned on, the data signal from the data line Dm is supplied to the second node N2. At this time, the second capacitor C2 charges the voltage corresponding to the data signal. On the other hand, since the first node N1 is set to the floating state during the fourth period T4, the first capacitor C1 maintains the charged voltage for the third period T3.

Since the third transistor M3 maintains the turn-on state for the 3H period, the second node N2 receives the data signal corresponding to the (i-2) th horizontal line, the (i-1) Are sequentially supplied. In this case, the data signal corresponding to the current horizontal line is finally supplied to the second node N2, so that stable driving is possible.

During the fifth period T5, the supply of the emission control signal to the i < th > emission control line Ei is stopped and the sixth transistor M6 is turned on. When the sixth transistor M6 is turned on, a current corresponding to a voltage applied from the first transistor M1 to the first node N1 is supplied to the organic light emitting diode OLED. Here, the voltage applied to the first node N1 is set to the threshold voltage of the first transistor M1 and a voltage corresponding to the data signal, thereby supplying the OLED from the first transistor M1 to the organic light emitting diode OLED. Is set independently of the threshold voltage of the first transistor M1.

The initialization periods T1 and T2 in which the gate electrode of the first transistor M1 is initialized are set to 3H and the period T3 in which the threshold voltage is compensated is set to 2H in the present invention. Therefore, in the present invention, even when driving at a frequency of 120 Hz or more, there is an advantage that the threshold voltage of the driving transistor can be sufficiently compensated and driven stably. 3, the third period T3 is set to the 2H period, but the present invention is not limited thereto. Actually, in the present invention, the initialization period and the threshold voltage compensation period can be set for a desired period while setting the width of the scanning signal to 4H or more.

4 is a waveform diagram showing a driving method according to the second embodiment of the present invention.

Referring to FIG. 4, the driving method according to the second embodiment of the present invention supplies a scanning signal of 3H to scan lines S1 to Sn, and a scan signal supplied to the i- Is the same as the driving waveform shown in Fig. 3 in that it overlaps with the scanning signal supplied to the scanning line Si-1 for a period of 2H.

2 in that the emission control signals are supplied simultaneously to the emission control lines E1 to En in the driving method according to the second embodiment of the present invention. 4, the emission control signals are simultaneously supplied to the emission control lines E1 to En during the period in which the scan signals are supplied to the scan lines S1 to Sn so that all the pixels 140 are set to the non-emission state do. Then, after the supply of the scan signals to the scan lines S1 to Sn is stopped, the supply of the emission control signals to the emission control lines E1 to En is stopped. When the supply of the emission control signal to the emission control lines E1 to En is stopped, all the pixels 140 are simultaneously set to the emission state.

That is, in the driving waveform shown in FIG. 4, there is an advantage that light emission and non-emission state of the pixels 140 can be simultaneously controlled and driven by various methods (for example, 3D driving). Also, when the data signal is supplied in a state where the pixels 140 are set in the non-emission state, there is an advantage that the second capacitor C2 can be charged with a desired voltage irrespective of the voltage drop of the first power ELVDD.

5 is a view showing a pixel according to a second embodiment of the present invention. In the description of FIG. 5, the same reference numerals are assigned to the same components as those in FIG. 2, and a detailed description thereof will be omitted.

Referring to FIG. 5, the second electrode of the fifth transistor M5 in the pixel 140 according to the second embodiment of the present invention is connected to the second power source ELVSS. The fifth transistor M5 turns on when the scan signal is supplied to the i-2 scan line Si-2 and supplies the voltage of the second power ELVSS to the first node N1. The other driving methods are the same as those in Fig. 2, and a detailed description thereof will be omitted.

6 is a view showing a pixel according to a third embodiment of the present invention. 6, the same reference numerals are assigned to the same components as those of FIG. 2, and a detailed description thereof will be omitted.

Referring to FIG. 6, the second electrode of the fourth transistor M4 in the pixel 140 according to the third embodiment of the present invention is connected to the reference power source Vref. The fourth transistor M4 is turned on when a scan signal is supplied to the ith scan line Si and supplies a voltage of the reference power source Vref to the second node N2. Here, the reference power supply Vref is set to a predetermined DC voltage, for example, a voltage higher than the data signal.

7 is a view showing a pixel according to a fourth embodiment of the present invention. 7, the same reference numerals are assigned to the same components as those of FIG. 2, and a detailed description thereof will be omitted.

Referring to FIG. 7, the second electrode of the fifth transistor M5 in the pixel 140 according to the fourth exemplary embodiment of the present invention is connected to the initial power source Vint. The fifth transistor M5 is turned on when a scan signal is supplied to the i-2 scan line Si-2 and supplies a voltage of the initial power source Vint to the first node N1. Here, the initial power source Vint is set to a predetermined DC voltage, for example, a voltage lower than the data signal.

8 is a graph showing the amount of current corresponding to the voltage of the data signal of the pixel shown in FIG.

Referring to FIG. 8, in the pixel 140 of the present invention, when a voltage of 0 to 8 V is applied to a voltage of a data signal, the amount of current flowing to the organic light emitting diode OLED is changed by about 25 μA. That is, according to the present invention, a gray level can be expressed by applying a data signal of 0 to 8V, which is advantageous in that it can be driven at a low voltage.

In the above description of the pixels 140, although the second capacitor C2 is shown as being connected between the second node N2 and the first power source ELVDD, the present invention is not limited thereto. For example, the second capacitor C2 may be connected between the first node N1 and the first power source ELVDD as shown in FIG.

In operation, the voltage of the second node N2 is changed when the third transistor M3 is turned on and the data signal is supplied to the second node N2. When the voltage of the second node N2 is changed, the voltage of the first node N1 is also changed by the coupling of the first capacitor C1. At this time, the second capacitor C2 charges the voltage corresponding to the voltage difference between the first node N1 and the first power source ELVDD. 2, the second capacitor C2 charges a voltage corresponding to the voltage difference between the data signal and the first power source ELVDD. In the pixel shown in FIG. 9, the first node N1 And charges the voltage corresponding to the voltage difference of the first power source ELVDD. Since the voltage of the first node N1 is controlled by the voltage of the data signal, the voltage charged in the second capacitor C2 is controlled by the data signal, and accordingly, the amount of current supplied to the organic light emitting diode OLED Is determined by the data signal.

In addition, although the position of the second capacitor C2 is changed in the pixel shown in FIG. 2 for convenience of explanation in FIG. 9, the present invention is not limited thereto. That is, the positions of the second capacitors C2 may be set between the first node N1 and the first power source ELVDD in each of the pixels 140 shown in FIGS.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that various modifications may be made without departing from the scope of the present invention.

110: scan driver 120:
130: pixel portion 140: pixel
142: pixel circuit 150: timing control section

Claims (25)

A scan driver sequentially supplying a scan signal having an odd width of 2H to the scan lines to overlap the scan lines and supplying emission control signals to the emission control lines formed in parallel with the scan lines;
A data driver for supplying a data signal to data lines;
And pixels located at intersections of the scan lines and the data lines;
Each of the pixels
An organic light emitting diode having a cathode electrode connected to a second power source;
A first transistor for controlling an amount of current supplied from the first power source connected to the first electrode to the organic light emitting diode;
A second transistor connected between the gate electrode and the second electrode of the first transistor and turned on when a scan signal is supplied to the current scan line;
A third transistor connected between the data line and the second node and turned on when a scan signal is supplied to the next scan line;
A first capacitor connected between the gate electrode of the first transistor and the second node;
A fifth transistor that is turned on when a scan signal is supplied to the previous scan line and supplies a first voltage to the gate electrode of the first transistor;
A fourth transistor for supplying a second voltage to the second node when a scan signal is supplied to the current scan line,
And a sixth transistor connected between the second electrode of the first transistor and the organic light emitting diode and being turned off when a light emitting control signal is supplied to the current light emitting control line,
Wherein the current scanning line is an i-th (i is a natural number) scanning line, the previous scanning line is an (i-2) th scanning line, and the next scanning line is an (i + 3) th scanning line. delete The method according to claim 1,
And a second capacitor connected between the second node and the first power supply. The method according to claim 1,
And a second capacitor connected between the gate electrode of the first transistor and the first power source. The method according to claim 1,
And the fourth transistor is connected between the second node and the first power source. The method according to claim 1,
Wherein the fourth transistor is connected between the second node and a reference power supply for supplying the second voltage, and the second voltage is a voltage higher than the data signal. The method according to claim 1,
And the fifth transistor is connected to the gate electrode of the first transistor and the anode electrode of the organic light emitting diode. The method according to claim 1,
And the fifth transistor is connected between the gate electrode of the first transistor and the second power source. The method according to claim 1,
Wherein the fifth transistor is connected between a gate electrode of the first transistor and an initial power supply for supplying the first voltage, and the first voltage is lower than the data signal. delete The method according to claim 1,
And the current emission control line is an i-th emission control line. The method according to claim 1,
Wherein the scan driver supplies the scan signal for a period of 3H and the scan signal supplied to the i-th scan line is overlapped with a scan signal supplied to the (i-1) -th scan line for a period of 2H. Device. 12. The method of claim 11,
The scan driver sequentially supplies the emission control signals to the emission control lines, and the emission control signal supplied to the i < th > emission control line overlaps the scan signal supplied to the i-2 scan line to the (i + 3) Wherein the organic electroluminescent display device comprises: The method according to claim 1,
The scan driver supplies the emission control signals to the emission control lines simultaneously during a period in which the scan signals are sequentially supplied to all the scan lines and supplies the emission control signals to the emission control lines after the supply of the scan signals is stopped. Is not supplied to the organic light emitting display device. The method according to claim 1,
And the data driver supplies a data signal to the data lines every 1H period. delete delete delete delete delete delete delete delete delete delete

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