Organic light emitting diode display and method for driving the same

1. An organic light emitting diode display comprising:

a display panel including a plurality of pixels, the plurality of pixels including a first set of display lines arranged in rows extending from a gate driver, each display line coupled to a corresponding line of pixels, and the first set of display lines including a first display line and a second display line;

an input terminal receiving a power voltage for driving each of the plurality of pixels via power lines connected to each pixel;

a display panel driver including a data driver and the gate driver, configured to drive signal lines of the display panel; and

a timing controller configured to divide one frame into a plurality of subframes including at least a first subframe and a second subframe subsequent to the first subframe and control an operation of the display panel driver to address the plurality of pixels at each of the subframes, wherein a first amount of time for addressing the first set of display lines for the first subframe is greater than a second amount of time for addressing the first set of display lines for the second subframe when the first display line is farther away from the input terminal than the second display line, and the second amount of time is greater than the first amount of time when the second display line is farther away from the input terminal than the first display line.

2. The organic light emitting diode display according to claim 1 , wherein each subframe in the plurality of subframes corresponds to a bit of data of an input image.

3. The organic light emitting diode display of claim 2 , wherein a most significant bit (MSB) of the data of the input image is mapped to the first subframe and a least significant bit (LSB) of the data of the input image is mapped to a last subframe of the plurality of subframes.

4. The organic light emitting diode display according to claim 1 , wherein the input terminal of the power lines is closer to the upper side of the display panel than the lower side of the display panel, wherein data addressing is sequentially performed from the upper side to the lower side of the display panel in a sequential line manner, and wherein the second amount of time is greater than the first amount of time.

5. The organic light emitting diode display according to claim 1 , wherein the input terminal of the power lines is closer to the lower side of the display panel than the upper side of the display panel, wherein data addressing is sequentially performed from the upper side to the lower side of the display panel in a sequential line manner, and wherein the first amount of time is greater than the second amount of time.

6. The organic light emitting diode display according to claim 1 , wherein the timing controller includes a multiplexer configured to receive a plurality of gate shift clocks having different pulse periods and selectively outputs one of the plurality of gate shift clocks to the display panel driver at start timing of each subframe.

7. The organic light emitting diode display according to claim 1 , wherein a dummy subframe is further arranged after a last subframe in the one frame, and

wherein a length of the dummy subframe at an upper display line of the display panel is different from a length of the dummy subframe at a lower display line of the display panel.

8. The organic light emitting diode display according to claim 7 , wherein the display panel driver applies a data voltage, which causes the pixels not to emit light, to the display panel during the dummy subframe.

9. The organic light emitting diode display of claim 1 , wherein an emission time interval of the first display line for the first subframe is longer than an emission time interval of the second display line for the first subframe when the first display line is farther away from the input terminal than the second display line, and wherein the emission time interval of the second display line for the first subframe is longer than the emission time interval of the first display line for the first subframe when the second display line is farther away from the input terminal than the first display line.

10. A method for driving an organic light emitting diode display including a display panel including a plurality of pixels and a display panel driver including a data driver and a gate driver driving signal lines of the display panel, the method comprising:

receiving a power voltage at an input terminal for driving each of the plurality of pixels via power lines connected to each pixel;

dividing one frame into a plurality of subframes including a first subframe and a second subframe subsequent to the first subframe; and

controlling an operation of the display panel driver to address the plurality of pixels at each subframe for inputting image data,

wherein a first amount of time for addressing a first set of display lines arranged in rows extending from the gate driver for the first subframe is greater than a second amount of time for addressing the first set of display lines for the second subframe when a first display line in the first set of display lines is farther away from the input terminal than a second display line in the first set of display lines, and the second amount of time is greater than the first amount of time when the second display line is farther away from the input terminal than the first display line, wherein each display line is coupled to a corresponding line of pixels.

11. The method according to claim 10 , wherein each subframe in the plurality of subframes corresponds to a bit of the input image data.

12. The method according to claim 11 , wherein a most significant bit (MSB) of the input image data is mapped to the first subframe and a least significant bit (LSB) of the data of the input image is mapped to a last subframe of the plurality of subframes.

13. The method according to claim 10 , wherein the input terminal of the power lines is closer to the upper side of the display panel than the lower side of the display panel, wherein data addressing is sequentially performed from the upper side to the lower side of the display panel in a sequential line manner, and wherein the second amount of time is greater than the first amount of time.

14. The method according to claim 10 , wherein the input terminal of the power lines is closer to the lower side of the display panel than the upper side of the display panel, wherein data addressing is sequentially performed from the upper side to the lower side of the display panel in a sequential line manner, and wherein the first amount of time is greater than the second amount of time.

15. The method according to claim 10 , wherein the controlling of the operation of the display panel driver includes receiving a plurality of gate shift clocks having different pulse periods and selectively outputting one of the plurality of gate shift clocks to the display panel driver at start timing of each subframe.

16. The method according to claim 10 , wherein a dummy subframe is further arranged after a last subframe in the one frame, and

wherein a length of the dummy subframe at an upper display line of the display panel is different from a length of the dummy subframe at a lower display line of the display panel.

17. The method according to claim 16 , further comprising applying a data voltage, which causes the pixels not to emit light, to the display panel during the dummy subframe.

18. The method of claim 10 , wherein an emission time interval of the first display line for the first subframe is longer than an emission time interval of the second display line for the first subframe when the first display line is farther away from the input terminal than the second display line, and wherein the emission time interval of the second display line for the first subframe is longer than the emission time interval of the first display line for the first subframe when the second display line is farther away from the input terminal than the first display line.

19. A display device comprising:

a display panel including a plurality of pixels configured to emit light, the plurality of pixels including a first display line of pixels and a second display line of pixels, arranged in rows extending from a gate driver, each display line coupled to a corresponding line of pixels;

an input terminal receiving a power voltage for driving each of the plurality of pixels via power lines connected to each pixel, wherein the input terminal is closer to the first display line of pixels than to the second display line of pixels;

a display panel driver including a data driver and the gate driver configured to drive signal lines of the display panel; and

a timing controller configured to control an operation of the display panel driver to address the plurality of pixels at each subframe among a plurality of subframes for inputting image data, wherein an emission time interval of the first display line of pixels for at least one subframe is shorter than an emission time interval of the second display line of pixels for the at least one subframe.