KR100698702B1 - Organic Light Emitting Display and Driving Method Thereof - Google Patents

Abstract

An organic light emitting display device and a driving method thereof are provided to reduce power consumption and an electromagnetic interference by generating second data using analog voltages stored in respective pixels and displaying a still image using the second data. An organic light emitting display device includes plural pixels(140), a scan driver(110), a data driver(120), and a timing controller(150). The pixels are arranged to be connected to the scan and data lines. The scan driver sequentially supplies scan signals to the scan lines. The data driver supplies a first data signal, which is generated by first data from the timing controller, to the data lines, when moving pictures are displayed. When a still image is displayed, the data driver generates second data by using voltages stored in the pixels, and supplies a second data signal, which is generated by using the second data, to the data lines. The timing controller controls the scan and data drivers.

Description

Organic Light Emitting Display and Driving Method Thereof

1 is a diagram illustrating a conventional organic light emitting display device having a memory circuit.

2 is a diagram illustrating an organic light emitting display device according to an exemplary embodiment of the present invention.

3 is a waveform diagram illustrating driving waveforms of the scan driver and the data driver illustrated in FIG. 2.

4A and 4B are diagrams illustrating the pixel illustrated in FIG. 2.

FIG. 5 is a diagram schematically illustrating one channel of the data driver illustrated in FIG. 2.

FIG. 6 is a diagram illustrating an operation process of the switches illustrated in FIG. 5 when displaying a still image.

<Explanation of symbols for the main parts of the drawings>

2140: pixel 4: memory circuit

10: pixel area 20,122: latch

30,123: DAC 40,124: Amplifier

50,121 input line 110: scan driver

120: data driver 125: ADC

130: pixel portion 142: pixel circuit

150: timing controller

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic light emitting display device and a driving method thereof, and more particularly, to an organic light emitting display device and a driving method thereof in which a storage capacitor included in each pixel can be utilized as a memory.

Recently, various flat panel displays have been developed to reduce weight and volume, which are disadvantages of cathode ray tubes. The flat panel display includes a liquid crystal display, a field emission display, a plasma display panel, and an organic light emitting display.

Among flat panel displays, an organic light emitting display device displays an image using an organic light emitting diode that generates light by recombination of electrons and holes. Such an organic light emitting display device has an advantage of having a fast response speed and driving with low power consumption.

Currently, a method of adding a memory circuit to each pixel of the organic light emitting display is being studied. That is, a memory circuit is added to each pixel, and a still image or the like is expressed using data stored in the memory circuit. For example, when an organic light emitting display device is applied to a mobile phone, a background screen or the like is expressed using data stored in a memory circuit. As such, when the background image is expressed by using the data stored in the memory circuit, since the data is not supplied to the data driver, electromagnetic waves and the like can be reduced and power consumption can be reduced.

1 is a view schematically showing a conventional organic light emitting display device having a memory circuit. In FIG. 1, circuits and pixels connected to an m-th data line Dm and an n-th scan line Sn are illustrated for convenience of description.

Referring to FIG. 1, a conventional organic light emitting display device includes a pixel 2 and a memory circuit 4 formed in a pixel region 10, and a data connected between a data line Dm and an input line 50. The first switch SW1, the second switch SW2, the digital analog converter (DAC) 30 and the latch 20, the first node N1 and the input line 50 ), And an amplifier 40 and a third switch SW3 connected between each other, and a fourth switch SW4 connected between the data line Dm and the latch 20.

The pixel region 10 is positioned at each intersection of the scan line Sn and the data line Dm. In each of the pixel regions 10, a pixel 2 and a memory circuit 4 are formed. The pixel 2 is composed of at least one capacitor, transistor, and organic light emitting diode, not shown. Such a pixel 2 is selected when the scan signal is supplied to the scan line Sn and charges a voltage corresponding to the data signal supplied to the data line Dm. The pixel 2 generates light having a predetermined brightness by supplying a current corresponding to the charged voltage to the organic light emitting diode.

The memory circuit 4 is composed of a plurality of transistors to store predetermined bits of digital data. For example, the memory circuit 4 stores i (i is a positive integer) bit of digital data.

The latch 20 temporarily stores data supplied from the input line 50, and supplies the stored data to the DAC 30. The DAC 30 converts the digital data supplied from the latch 20 into an analog voltage to generate a data signal, and supplies the generated data signal to the pixel 2.

The amplifier 40 plays a role of transferring data supplied from the memory circuit 4 to the latch 20. The first switch SW1 to the fourth switch SW4 are driven to display a predetermined image on the pixel 2 while being turned on or turned off.

In detail, the fourth switch SW4 is turned on before the organic light emitting display device is driven. After the fourth switch SW4 is turned on, predetermined data is input from the input terminal 50. Here, predetermined data input while the fourth switch SW4 is turned on is used as data for displaying a still image. Data input to the input terminal 50 is supplied to the memory circuit 4 via the latch 20, the fourth switch SW4, and the data line Dm. Then, the memory circuit 4 receives i-bit digital data and stores it.

After data is stored in the memory circuit 4, the first switch SW1 and the second switch SW2 are turned on, and the third switch SW3 and the fourth switch SW4 are turned off. . Thereafter, the data corresponding to the image to be displayed is supplied to the input terminal 50. Data supplied to the input terminal 50 is supplied to the DAC 30 via the latch 20.

The DAC 30 supplied with data generates an analog voltage corresponding to the bit value of the data, and generates the pixel through the second switch SW2 and the first switch SW1. It is supplied to (2). Then, the pixel 2 generates light of a predetermined luminance in response to the data signal. In fact, when the organic light emitting display device displays a moving image or the like, the pixel 2 generates light having a predetermined luminance in response to a data signal generated by data supplied from the outside.

Thereafter, when displaying a still image or the like, the supply of the data signal to the input terminal 50 is stopped. At this time, the second switch SW2 is turned off, the third switch SW3 is turned on, and data stored in the memory circuit 4 is supplied to the latch 20 via the amplifier 40. After the data stored in the memory circuit 4 is stored in the latch 20, the third switch SW3 is turned off and the second switch SW2 is turned on.

Data stored in the latch 20 is supplied to the DAC 30. The DAC 30 receiving the data generates an analog voltage corresponding to the bit value of the data, and uses the generated analog voltage as a data signal via the second switch SW2 and the first switch SW1. 2) is supplied. Then, the pixel 2 displays a predetermined image in response to the data signal supplied thereto. That is, when displaying a still image, a data signal is generated using the data stored in the memory circuit 4, and the image is displayed using this data signal.

When displaying a still image or the like in this manner, since data is not supplied to the input terminal 50, electromagnetic waves and the like can be reduced. In addition, since data is not supplied to the input terminal 50, power consumption may be reduced. However, the conventional organic light emitting display device has a disadvantage in that an additional memory circuit 4 must be installed in each pixel area 10.

In fact, when the memory circuit 4 is mounted for each pixel 2, there is a problem that the wiring for inputting and outputting data increases, thereby increasing the pixel region 10. In addition, due to the transistors included in each of the memory circuits 4, the pixel region 10 is further increased, which makes it difficult to apply the high resolution.

Accordingly, an object of the present invention is to provide an organic light emitting display device and a method of driving the same, which enable the storage capacitor included in each of the pixels to be used as a memory.

In order to achieve the above object, an organic light emitting display device according to an exemplary embodiment of the present invention includes: a plurality of pixels positioned to be connected to scan lines and data lines; A scan driver for sequentially supplying scan signals to the scan lines; When displaying a moving picture, the first data signal generated by the first data supplied from the timing controller is supplied to the data lines, and when the still image is displayed, the second data are generated using the voltage values stored in the pixels. A data driver for supplying a second data signal generated using the second data to the data lines; And a timing controller for controlling the scan driver and the data driver.

Preferably, the scan driver sets the width of the scan signal supplied when displaying the moving picture and the width of the scan signal supplied when displaying the still image differently. The data driver is provided for each channel and the latch for temporarily storing the first data supplied from the input terminal, the digital-analog converter for generating a data signal using the first data stored in the latch and A second switch and a first switch connected between the digital-analog converter and the data line, an analog-digital converter connected between the common terminal of the first switch and the second switch and the input terminal; And a third switch connected between the analog-digital converter and the input terminal, a third power source connected to the common terminal, and a fourth switch connected between the third power source and the common terminal.

According to an embodiment of the present invention, a method of driving an organic light emitting display device generates a data signal using first data supplied from the outside, and displays a video by supplying the generated data signal to a pixel via a data line. A first step; And generating a second data by using the voltage stored in the pixel, converting the second data into a data signal, and supplying the second data to the pixel.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 to 6 that can be easily implemented by those skilled in the art.

2 is a diagram illustrating an organic light emitting display device according to an exemplary embodiment of the present invention.

Referring to FIG. 2, an organic light emitting display device according to an exemplary embodiment of the present invention includes a pixel portion including a plurality of pixels 140 connected to scan lines S1 to Sn and data lines D1 to Dm. 130, the scan driver 110 for driving the scan lines S1 to Sn, the data driver 120 for driving the data lines D1 to Dm, the scan driver 110 and the data driver 120. ), A timing controller 150 for controlling.

The timing controller 150 generates a data drive control signal DCS and a scan drive control signal SCS in response to external synchronization signals. The data driving control signal DCS generated by the timing controller 150 is supplied to the data driver 120, and the scan driving control signal SCS is supplied to the scan driver 110. The timing controller 150 supplies the data Data supplied from the outside to the data driver 120.

Here, the timing controller 150 supplies data Data corresponding to the video when the video is displayed in the pixel unit 130. When the video is displayed on the timing controller 150 and the still image is displayed on the pixel unit 130, data corresponding to the still image is supplied. In this case, the timing controller 150 supplies data of one frame corresponding to the still image to the data driver 120 only once. To this end, the timing controller 150 may include a frame memory in which one frame of still image data may be stored.

Meanwhile, the timing controller 150 should determine whether the image displayed on the pixel unit 130 is a moving picture or a still image in order to control whether data is supplied. For example, when the organic light emitting display device is used in a mobile phone, the timing controller 150 may determine to display a still image (background screen) before a key is input from the user. In fact, since a method of determining a moving picture or a still image in the timing controller 150 is variously known, a detailed description thereof will be omitted.

The data driver 120 generates a data signal DS corresponding to the data supplied from the timing controller 150 as shown in FIG. 3, and converts the generated data signal DS into the data lines D1 to Dm. Supply. Here, when the still image is displayed on the pixel unit 130, the data driver 120 supplies a data signal to the pixels 130 by using the still image data supplied from the data driver 120, thereby providing a still image of one frame. Is displayed. Thereafter, the data driver 120 generates digital data using the analog voltage stored in the pixels 140, and generates a data signal using the generated digital data. Then, the generated data signal is supplied to the pixels 140 again to display a still image.

The scan driver 110 sequentially supplies scan signals to the scan lines S1 to Sn. When the scan signals are sequentially supplied to the scan lines S1 to Sn, the pixels 140 are sequentially selected for each line, and the selected pixels 140 are supplied with the data signals supplied from the data lines D1 to Dm. . Meanwhile, as illustrated in FIG. 3, the scan driver 110 sets the width of the scan signal differently when displaying a moving image and when displaying a still image. In other words, the width T2 of the scan signal is set to be wider than that of displaying the video (T1) so that the analog voltage stored in the pixels 140 can be supplied to the data driver 120 when displaying the still image. .

The pixel unit 130 receives the first power source ELVDD and the second power source ELVSS from the outside and supplies the same to the pixels 140. Each of the pixels 140 supplied with the first power source ELVDD and the second power source ELVSS receives a data signal when a scan signal is supplied, and displays an image having a predetermined luminance in response to the supplied data signal.

4A is a diagram schematically illustrating a structure of a pixel illustrated in FIG. 2. In FIG. 4A, for convenience of description, the pixel 140 connected to the m-th data line Dm and the n-th scan line Sn is illustrated.

Referring to FIG. 4A, the pixel 140 of the present invention includes a first transistor M1, a storage capacitor Cst, a pixel circuit 142, and an 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 brightness in correspondence with the amount of current supplied from the pixel circuit 142.

The gate electrode of the first transistor M1 is connected to the scan line Sn, and the first electrode is connected to the data line Dm. The second electrode of the first transistor M1 is connected to one terminal of the storage capacitor Cst. The first transistor M1 is turned on when the scan signal is supplied to the scan line Sn. When the first transistor M1 is turned on, the data signal supplied to the data line Dm is transmitted to one terminal of the storage capacitor Cst. Meanwhile, the first electrode is set to any one of a source electrode and a drain electrode, and the second electrode is set to an electrode different from the first electrode. For example, when the first electrode is set as the source electrode, the second electrode is set as the drain electrode.

The storage capacitor Cst charges a predetermined voltage in response to the data signal supplied when the first transistor M1 is turned on. In practice, the storage capacitor Cst charges a voltage corresponding to the difference between the data signal and the first power source ELVDD.

The pixel circuit 142 controls the amount of current supplied to the organic light emitting diode OLED in response to the voltage value charged in the storage capacitor Cst. To this end, the pixel circuit 142 includes at least one transistor. For example, the pixel circuit 142 may include a second transistor M2 as shown in FIG. 4B. In this case, the second transistor M2 supplies a current corresponding to the voltage value charged in the storage capacitor Cst to the organic light emitting diode OLED so that light of a predetermined luminance is generated in the organic light emitting diode OLED. do. Meanwhile, in the present invention, the structure of the pixel circuit 142 may be set to various structures currently known. For example, the pixel circuit 142 may further include transistors so that the threshold voltage of the second transistor M2 can be compensated for.

5 is a diagram schematically illustrating a structure of a data driver connected to a pixel. In FIG. 5, a channel structure of the data driver 120 connected to the m th data line Dm will be illustrated for convenience of description. In addition, Cline illustrated in FIG. 5 is an equivalent representation of the parasitic capacitor of the data line Dm.

Referring to FIG. 5, the data driver 120 includes a first switch SW1, a second switch SW2, a DAC 123, and a latch 122 connected between the data line Dm and the input line 121. And an amplifier 124 and an analog-to-digital converter connected between the first node N1, which is a common terminal between the first switch SW1 and the second switch SW2, and the input line 121. 125 and a third switch SW3, and a fourth switch SW4 connected between the first node N1 and the third power supply VDD.

The switches SW1 to SW4, the latch 122, the DAC 123, the amplifier 124, and the ADC 125 shown in FIG. 5 are provided for each channel, that is, each of the data lines D1 to Dm. On the other hand, the data driver 120 further includes a shift register (not shown). In addition, a buffer (not shown) may be additionally installed between the DAC 123 and the second switch SW2.

The latch 122 temporarily stores the first data data1 supplied from the input line 121 and supplies the stored first data data1 to the DAC 123. The DAC 123 generates a data signal by converting the first data data1 supplied from the latch 122 into an analog voltage, and supplies the generated data signal to the pixel 140.

The amplifier 124 amplifies the analog voltage supplied from the pixel 4 and supplies it to the ADC 125. The ADC 125 converts the analog voltage supplied from the amplifier 124 into a digital signal. In practice, the ADC 125 generates the second data data2 corresponding to the voltage value of the analog voltage.

The third power source VDD is used to initialize the voltage value of the data line Dm when the fourth switch SW4 is turned on. In other words, when the fourth switch SW4 is turned on, the voltage charged in the parasitic capacitor Cline of the data line Dm is changed to the voltage value of the third power source VDD regardless of the previous value. Here, the voltage value of the third power source VDD may be variously set so that the voltage value of the data line Dm can be initialized. For example, the voltage value of the third power source VDD may be set to ground GND.

Referring to the operation process, when the video is first displayed, the first switch SW1 and the second switch SW2 are turned on, and the third switch SW3 and the fourth switch SW4 are turned off. Then, the DAC 123 and the data Dm are electrically connected. Thereafter, the first data data1 is supplied to the input terminal 121.

The first data data1 supplied to the input terminal 121 is supplied to the DAC 123 via the latch 122. The DAC 123 supplied with the first data data1 generates a data signal corresponding to the bit value of the first data data1 and supplies the generated data signal to the data line Dm. The data signal supplied to the data line Dm is supplied to the pixel 140 receiving the scan signal, thereby charging the voltage corresponding to the data signal to the storage capacitor Cst. Then, the pixel circuit 142 controls the amount of current supplied to the organic light emitting diode OLED in response to the voltage charged in the storage capacitor Cst to generate light having a predetermined brightness.

In practice, this process is repeated every time the scan signal is supplied to each of the first scan line S1 to the nth scan line Sn, as shown in FIG. 3. Then, each time the scan signal is supplied, a data signal corresponding to the first data is generated, and accordingly, a predetermined image is displayed on the pixel unit 130.

Meanwhile, in the present invention, when displaying a still image after displaying the moving image, first data data1 corresponding to the still image is supplied. In fact, the first data data1 corresponding to one frame corresponding to the still image to be displayed is supplied, and a voltage corresponding to the still image is charged in each of the pixels 140.

Thereafter, as illustrated in FIG. 3, a scan signal having a predetermined width T2 is sequentially supplied to correspond to the still image. Meanwhile, while the switches SW1 to SW3 are selectively turned on and off during the period in which the scan signal of the still image is supplied, the second data data2 is generated using the voltage stored in the pixel 140.

5 and 6, the first switch SW1, the second switch SW2, and the fourth switch during the first period T11 before the scan signal is supplied to the scan line Sn. SW4 is turned on and the third switch SW3 is turned off. When the first switch SW1, the second switch SW2, and the fourth switch SW4 are turned on, the voltage value of the parasitic capacitor Cline is changed by the voltage value of the third power source VDD. In other words, the parasitic capacitor Cline is changed to the voltage value of the third power source VDD regardless of the voltage value of the previous data signal.

The first switch SW1, the second switch SW2, and the fourth switch SW4 are turned off during the second period T12. The first transistor M1 is turned on by the scan signal supplied to the scan line Sn. Then, charge sharing occurs between the parasitic capacitor Cline and the storage capacitor Cst, thereby changing the voltage charged in the parasitic capacitor Cline and the voltage charged in the storage capacitor Cst. Here, since the voltage value charged in the parasitic capacitor Cline is always set to the voltage value of the third power supply VDD, the voltage changed during the second period T12 is determined by the voltage charged in the storage capacitor Cst. do.

The first switch SW1 and the third switch SW3 are turned on for the third period T13, and the second switch SW2 and the fourth switch SW4 are maintained in the turned off state. When the first switch SW1 and the third switch SW3 are turned on, the voltage charged in the storage capacitor Cst is supplied to the amplifier 124. The amplifier 124 supplied with the voltage charged in the storage capacitor Cst amplifies the voltage supplied thereto and supplies it to the ADC 125. Here, the amplifier 124 may be omitted as a means for amplifying the voltage.

The ADC 125 supplied with the voltage from the amplifier 124 generates the second data data2 using the analog voltage value supplied thereto. In practice, the ADC 125 generates the second data data2 having a predetermined bit value based on the voltage value of the analog voltage and supplies the second data data2 to the latch 122. The latch 122 temporarily stores the second data data2 and supplies the stored second data data2 to the DAC 123. The DAC 123 converts the second data data2 supplied thereto to an analog voltage to generate a data signal DS.

The first switch SW1 maintains a turn-on state and the fourth switch SW4 maintains a turn-off state for the fourth period T14. The second switch SW2 is turned on and the third switch SW3 is turned off. Then, the data signal DS generated by the DAC 123 is supplied to the storage capacitor Cst via the data line Dm and the first transistor M1. Then, the voltage corresponding to the data signal DS is charged in the storage capacitor Cst, and is supplied to the organic light emitting diode OLED corresponding to the charged voltage to display a predetermined still image.

In fact, in the present invention, when the scan signal is supplied to each of the scan lines S1 to Sn, the still image is displayed while repeating the first to fourth periods T11 to T14. In other words, in the present invention, the second data data2 is generated using the analog voltage stored in the pixels 140, and the still image is displayed using the generated second data data2. As such, when the still image is displayed by using the voltage stored in the pixels 140, since only one frame of still image data is supplied from the outside, electromagnetic waves and power consumption may be reduced. In addition, in the present invention, since a circuit is not additionally mounted on the pixel 140 for displaying a still image, the pixel configuration is not changed and wiring is not increased.

On the other hand, when displaying a still image, the width of the scanning signal is set wider than when displaying a moving image. Here, when displaying the still image, the frequency of the frame can be lowered and driven so that the desired still image can be stably displayed even when the width of the scan signal is set wide.

The above detailed description and drawings are merely exemplary of the present invention, but are used only for the purpose of illustrating the present invention and are not intended to limit the scope of the present invention as defined in the meaning or claims. Accordingly, those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical protection scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

As described above, according to the organic light emitting display device and a driving method thereof, the second data is generated using the analog voltage stored in each pixel, and the still image is generated using the generated second data. Because of this, power consumption, electromagnetic waves, and the like can be reduced. In addition, since a circuit for storing still image data is not formed in the pixels, the size of the pixels can be prevented from increasing. In addition, since an additional circuit is not formed in the pixel, there is an advantage in that the original pixel structure is used and wiring is not increased.

Claims (15)

A plurality of pixels positioned to be connected to the scan lines and the data lines; A scan driver for sequentially supplying scan signals to the scan lines; When displaying a moving picture, the first data signal generated by the first data supplied from the timing controller is supplied to the data lines, and when the still image is displayed, the second data are generated using the voltage values stored in the pixels. A data driver for supplying a second data signal generated using the second data to the data lines; And a timing controller for controlling the scan driver and the data driver. The method of claim 1, And the scan driver sets a width of the scan signal supplied when the moving image is displayed and a width of the scan signal supplied when the still image is displayed. The method of claim 2, And a width of a scan signal supplied when the still image is displayed to be wider than a width of the scan signal supplied when the moving image is displayed. The method of claim 1, The timing controller supplies the first data to the data driver when the video is displayed, and supplies the first data for one frame to the data driver when the still image is displayed. Light emitting display. The method of claim 4, wherein Each of the pixels An organic light emitting diode; A first transistor connected between the scan line and the data line and turned on when the scan signal is supplied; A storage capacitor connected between the first transistor and a first power source and configured to charge a voltage corresponding to the data signal; And a pixel circuit connected between the first power supply and the organic light emitting diode and configured to supply a current corresponding to the voltage stored in the storage capacitor to the second power supply via the organic light emitting diode. Light emitting display. The method of claim 5, The data driver A latch provided for each channel and temporarily storing the first data supplied from an input terminal; A digital-to-analog converter for generating a data signal using the first data stored in the latch; A second switch and a first switch connected between the digital-analog converter and the data line; An analog-digital converter connected between the common terminal of the first switch and the second switch and the input terminal; A third switch connected between the analog-digital converter and the input terminal; A third power supply connected to the common terminal; And a fourth switch connected between the third power supply and the common terminal. The method of claim 6, And the first switch and the second switch are turned on so that the data signal generated by the first data is supplied to the pixel when the first data is supplied from the timing controller. Light emitting display. The method of claim 6, When the still image is displayed, a parasitic capacitor is turned on and equivalently formed on the data line during the first period before the scan signal is supplied to a specific scan line. And charging the voltage of the third power supply to the organic light emitting display device. The method of claim 8, After the first period, the first to fourth switches are turned off during a second period during which a scan signal is supplied to the specific scan line, thereby charging the voltages of the storage capacitor and the parasitic capacitor. An organic light emitting display device, characterized in that for sharing. The method of claim 9, The first switch and the third switch are turned on, and the second switch and the fourth switch are turned off and charged in the storage capacitor during a third period after a second period of the period in which the scan signal is supplied. And a second voltage is supplied to the analog-digital converter to generate the second data. The method of claim 10, The first switch and the second switch are turned on, and the third switch and the fourth switch are turned off during the fourth period after the third period of the period in which the scan signal is supplied, to use the second data. And a data signal generated by the digital-analog converter is supplied to the pixel. The method of claim 6, And an amplifier positioned between the common terminal and the analog-digital converter to amplify a voltage supplied from the pixel. Generating a data signal using first data supplied from the outside and displaying the moving image by supplying the generated data signal to the pixel via the data line; And generating a second data by using the voltage stored in the pixel, and converting the second data into a data signal and supplying the second data to the pixel to display a still image. Driving method. The method of claim 13, And supplying the data signal generated by the first data of one frame corresponding to the still image to the pixels when the still image is displayed after the moving image is displayed in the step 1. A method of driving an organic light emitting display device. The method of claim 13, The second step is Charging a predetermined voltage to a parasitic capacitor that is equivalently formed on the data line; Charge-sharing voltages of the storage capacitor and the parasitic capacitor included in the pixel; Generating second data using the voltage of the storage capacitor; And generating the data signal by using the second data and supplying the generated data signal to the pixels.

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