Organic light emitting display device including emission driver and driving method thereof

1. An organic light emitting display device comprising:

a display panel;

a timing controller configured to receive a vertical sync signal, a horizontal sync signal, and input data signal, the input data signal comprising image data and reference data generated prior to the image data in a frame, and the timing controller configured to receive the image data when the vertical sync signal is activated, to receive the reference data corresponding to the image data when the vertical sync signal is deactivated, and to generate an emission control signal in accordance with emission duty information of the reference data, the emission control signal being configured to control an emission time of the frame;

an emission driver configured to supply first and second emission powers to the entire display panel, and to control a duration of a period during which a potential difference between the first and second emission powers is greater than or equal to a reference value in accordance with the emission control signal; and

a data driver configured to apply a plurality of data output voltages to a plurality of data lines coupled to the display panel,

wherein the reference data includes gray level information for corresponding image data and the emission duty information,

wherein the emission duty information is determined independently of the gray level information,

wherein the timing controller is configured to convert a gray level value of the image data to converted image data in accordance with the gray level information of the reference data,

wherein the data output voltages correspond to the converted image data, and

wherein the timing controller is configured to control a gray level range of the image data in accordance with the gray level information, and is configured to convert the gray level value of the image data in proportion to a control amount of the gray level range.

2. The organic light emitting display device of claim 1 , wherein the timing controller is configured to receive, when the vertical sync signal is deactivated, start notification data for indicating a start of the reference data and end notification data for indicating an end of the reference data.

3. The organic light emitting display device of claim 2 , wherein the timing controller is configured to block, when the vertical sync signal is deactivated, data received before the start notification data is received and after the end notification data is received.

4. The organic light emitting display device of claim 1 , wherein the vertical sync signal is activated after being deactivated for each frame.

5. The organic light emitting display device of claim 1 , wherein the first emission power is maintained at a first potential, and the second emission power swings between the first potential and a second potential, the second potential being lower than the first potential.

6. An organic light emitting display device comprising:

a display panel coupled to a plurality of data lines;

a timing controller configured to receive an input data signal comprising image data of one frame and first and second reference data corresponding to the image data during one period of a vertical sync signal, to convert a gray level value of the image data to generate converted image data in accordance with the first reference data, and to generate an emission control signal in accordance with the second reference data, the emission control signal being configured to control an emission time of the one frame;

a data driver configured to apply a plurality of data output voltages corresponding to the converted image data to the data lines; and

an emission driver configured to supply first and second emission powers to the display panel, and to control a duration of a period when a potential difference between the first and second emission powers is greater than or equal to a reference value in accordance with the emission control signal,

wherein the duration of the period is the emission time of the one frame,

wherein the timing controller receives the first and second reference data prior to the image data in one frame,

wherein the first reference data includes gray level information for corresponding image data, and the second reference data includes emission duty information,

wherein the emission duty information is determined independently of the gray level information, and

wherein the timing controller is configured to convert the gray level value of the image data in accordance with a gray level range of the image data which is controlled in accordance with the first reference data.

7. The organic light emitting display device of claim 6 , wherein the timing controller is configured

to receive the image data during an active period of the vertical sync signal, and

to receive the first and second reference data during an inactive period of the vertical sync signal.

8. The organic light emitting display device of claim 6 , wherein the potential difference occurs due to a swing of a potential of the first emission power or a swing of a potential of the second emission power.

9. The organic light emitting display device of claim 6 , wherein the input data signal comprises start notification data for indicating a start of the reference data, and end notification data for indicating an end of the reference data.

10. A method of driving organic light emitting display device, the method comprising:

receiving an input data signal comprising image data of a frame and reference data corresponding to the image data, and wherein the reference data is received prior to the image data;

generating an emission control signal in accordance with emission duty information of the reference data, the emission control signal being configured to control an emission time of the frame;

controlling a duration of a period when a potential difference between first and second emission powers is greater than or equal to a reference value in accordance with the emission control signal;

supplying the first and second emission powers to a display panel;

wherein the reference data including gray level information for corresponding image data and the emission duty information,

wherein the emission duty information is determined independently of the gray level information,

converting a gray level value of the image data to generate converted image data in accordance with the gray level information of the reference data; and

applying a plurality of data output voltages corresponding to the converted image data to the display panel,

wherein the generating of the converted image data comprises:

controlling a gray level range of the image data in accordance with the gray level information; and

converting the gray level value of the image data in accordance with a control amount of the gray level range.

11. The method of claim 10 , wherein during the receiving of the input data signal, the image data is received while a vertical sync signal is activated, and the reference data is received while the vertical sync signal is deactivated.

12. The method of claim 11 , wherein during the receiving of the input data signal,

the input data signal comprises start notification data for indicating a start of the reference data, and end notification data for indicating an end of the reference data.

13. The method of claim 10 , wherein in the controlling the duration of the period, the potential difference occurs due to a swing of the first emission power or a swing of the second emission power.