Scan driver and display device using the same

1. A scan driver comprising:

a plurality of stages coupled to respective scan lines,

wherein a kth (where k is a natural number) stage of the plurality of stages comprises:

a first driver configured to supply a kth scan signal to a first output terminal, based on a first clock signal; and

a second driver configured to supply a kth carry signal not overlapping the kth scan signal to a second output terminal, based on an inverse first clock signal.

2. The scan driver of claim 1 ,

wherein the first driver comprises:

a first output unit configured to supply the kth scan signal to the first output terminal, based on the first clock signal input to a first input terminal, a (k+1)th carry signal input to a fifth input terminal, the kth carry signal, and voltages of a first node and a second node;

a first controller configured to control the voltage of the second node, based on the first clock signal; and

a pull-up unit configured to control the voltage of the first node, based on a (k−1)th carry signal input to a second input terminal, a reset signal input to a fourth input terminal, and the kth carry signal.

3. The scan driver of claim 2 , wherein the first output unit is further configured to generate an internal carry signal having a same waveform as the kth scan signal.

4. The scan driver of claim 3 , wherein the second driver comprises:

a second output unit configured to supply the kth carry signal to the second output terminal, based on the inverse first clock signal input to a third input terminal, the (k+1)th carry signal, and voltages of a third node and a fourth node electrically coupled to the second node; and

a second controller configured to control the voltage of the third node, based on the kth scan signal or the internal carry signal, the reset signal, and the (k+1)th carry signal.

5. The scan driver of claim 4 , wherein the second output unit comprises:

a first transistor coupled between the third input terminal and the second output terminal, the first transistor having a gate electrode coupled to the third node;

a second transistor coupled between the second output terminal and a second power input terminal supplied with a second off voltage, the second transistor having a gate electrode coupled to the fourth node;

a third transistor coupled between the second output terminal and the second power input terminal, the third transistor having a gate electrode coupled to the fifth input terminal; and

a first capacitor coupled between the third node and the second output terminal.

6. The scan driver of claim 4 , wherein the second controller comprises:

a fourth transistor configured to be diode-coupled, and to turn on when the kth scan signal or the internal carry signal is supplied to increase the voltage of the third node to a gate-on voltage;

a fifth transistor coupled between the third node and a second power input terminal supplied with a second off voltage, the fifth transistor having a gate electrode coupled to the fifth input terminal;

a sixth transistor coupled between the third node and the second power input terminal, the sixth transistor having a gate electrode coupled to the fourth node; and

a seventh transistor coupled between the third node and the second power input terminal, the seventh transistor having a gate electrode coupled to the fourth input terminal.

7. The scan driver of claim 3 , wherein the first output unit comprises:

a first transistor coupled between the first input terminal and the first output terminal, the first transistor having a gate electrode coupled to the first node;

a second transistor coupled between the first output terminal and a first power input terminal supplied with a first off voltage, the second transistor having a gate electrode coupled to the second node;

a third transistor coupled between the first output terminal and the first power input terminal, the third transistor having a gate electrode coupled to the second output terminal;

a fourth transistor coupled between the first output terminal and the first power input terminal, the fourth transistor having a gate electrode coupled to the fifth input terminal; and

a first capacitor coupled between the first node and the first output terminal.

8. The scan driver of claim 7 , wherein the first output unit comprises:

a fifth transistor coupled between the first input terminal and a carry terminal to output the internal carry signal, the fifth transistor having a gate electrode coupled to the first node;

a sixth transistor coupled between the carry terminal and a second power input terminal supplied with a second off voltage, the second off voltage being different from the first off voltage, the sixth transistor having a gate electrode coupled to the second output terminal; and

a seventh transistor coupled between the carry terminal and the second power input terminal, the seventh transistor having a gate electrode coupled to the second node.

9. The scan driver of claim 2 , wherein the first controller comprises:

an eighth transistor having a first electrode and a gate electrode, coupled to the first input terminal;

a ninth transistor coupled between a second electrode of the eighth transistor and a second power input terminal supplied with a second off voltage, the ninth transistor having a gate electrode coupled to the first output terminal;

a tenth transistor coupled between the first input terminal and the second node, the tenth transistor having a gate electrode coupled to the second electrode of the eighth transistor; and

an eleventh transistor coupled between the second node and the second power input terminal, the eleventh transistor having a gate electrode coupled to the first output terminal.

10. The scan driver of claim 2 , wherein the pull-up unit comprises:

a twelfth transistor having a gate electrode and a first electrode, coupled to the second input terminal;

a thirteenth transistor coupled between a second electrode of the twelfth transistor and a second power input terminal supplied with a second off voltage, the thirteenth transistor having a gate electrode coupled to the second output terminal;

a fourteenth transistor coupled between the second electrode of the twelfth transistor and the second power input terminal, the fourteenth transistor having a gate electrode coupled to the second node;

a fifteenth transistor coupled between the first node and the second power input terminal, the fifteenth transistor having a gate electrode coupled to the fifth input terminal; and

a sixteenth transistor coupled between the first node and the second power input terminal, the sixteenth transistor having a gate electrode coupled to the fourth input terminal.

11. A display device comprising:

i (where i is a natural number of 2 or more) scan drivers configured to supply scan signals to scan lines;

a plurality of blocks, each of the plurality of blocks comprising 2i scan lines;

a data modifier configured to generate second data by rearranging first data supplied from the outside in units of the blocks; and

a signal generator configured to sequentially or non-sequentially control a supply order of scan signals in units of the blocks, based on the second data,

wherein each of the i scan drivers comprises a plurality of stages, and

wherein at least one of the plurality of stages comprises:

a first driver configured to supply a kth scan signal to a first output terminal, based on a first clock signal; and

a second driver configured to supply a kth carry signal not overlapping the kth scan signal to a second output terminal, based on an inverse first clock signal.

12. The display device of claim 11 , wherein the signal generator is configured to supply a clock signal and an inverse clock signal to each of the i scan drivers, and

wherein high periods of clock signals supplied to the respective i scan drivers do not overlap each other.

13. The display device of claim 12 , wherein the i scan drivers are sequentially coupled to different scan lines in each of the blocks.

14. The display device of claim 13 , wherein the signal generator is further configured to control the supply order of the scan signals in units of the blocks by controlling a supply order of clock signals and inverse clock signals respectively supplied to the i scan drivers.

15. The display device of claim 13 , wherein each of the i scan drivers is configured to sequentially supply scan signals to scan lines coupled thereto.

16. The display device of claim 11 , wherein the first driver comprises:

a first output unit configured to supply the kth scan signal to the first output terminal, based on the first clock signal input to a first input terminal, a (k+1)th carry signal input to a fifth input terminal, the kth carry signal, and voltages of a first node and a second node;

a first controller configured to control the voltage of the second node, based on the first clock signal; and

a pull-up unit configured to control the voltage of the first node, based on a (k−1)th carry signal input to a second input terminal, a reset signal input to a fourth input terminal, and the kth carry signal.

17. The display device of claim 16 , wherein the second driver comprises:

a second output unit configured to supply the kth carry signal to the second output terminal, based on the inverse first clock signal input to a third input terminal, the (k+1)th carry signal, and voltages of a third node and a fourth node electrically coupled to the second node; and

a second controller configured to control the voltage of the third node, based on the kth scan signal, the reset signal, and the (k+1)th carry signal.

18. The display device of claim 17 , wherein the second output unit comprises:

a first transistor coupled between the third input terminal and the second output terminal, the first transistor having a gate electrode coupled to the third node;

a second transistor coupled between the second output terminal and a second power input terminal supplied with a second off voltage, the second transistor having a gate electrode coupled to the fourth node;

a third transistor coupled between the second output terminal and the second power input terminal, the third transistor having a gate electrode coupled to the fifth input terminal; and

a first capacitor coupled between the third node and the second output terminal.

19. The display device of claim 17 , wherein the second controller comprises:

a fourth transistor configured to be diode-coupled, and to turn on when the kth scan signal is supplied to increase the voltage of the third node to a gate-on voltage;

a fifth transistor coupled between the third node and a second power input terminal supplied with a second off voltage, the fifth transistor having a gate electrode coupled to the fifth input terminal;

a sixth transistor coupled between the third node and the second power input terminal, the sixth transistor having a gate electrode coupled to the fourth node; and

a seventh transistor coupled between the third node and the second power input terminal, the seventh transistor having a gate electrode coupled to the fourth input terminal.