Scan driver
A scan driver includes a plurality of stages. A n-th stage among the plurality of stages includes a first input unit controlling a voltage of a first node in response to a previous carry signal, a scan output unit outputting a current scan signal corresponding to a scan clock signal in response to the voltage of the first node, a first switching unit controlling a voltage of a second node in response to the previous carry signal, a sensing output unit outputting a current sensing signal corresponding to a sensing clock signal in response to the voltage of the second node, a carry output unit outputting a current carry signal corresponding to a carry clock signal in response to the voltage of the second node, and a second switching unit controlling the voltage of the second node in response to the sensing clock signal or the carry clock signal.
1. A scan driver comprising:
a plurality of stages, wherein an n-th stage among the plurality of stages comprises:
a first input unit providing a previous carry signal to a first node in response to the previous carry signal;
a first switching unit providing the previous carry signal to a second node in response to the previous carry signal;
a scan output unit outputting a current scan signal corresponding to a scan clock signal in response to a voltage of the first node;
a sensing output unit outputting a current sensing signal corresponding to a sensing clock signal in response to a voltage of the second node; and
a carry output unit outputting a current carry signal corresponding to a carry clock signal in response to the voltage of the second node,
wherein the first switching unit that is distinct and separate from the first input unit provides a current to the second node without passing through the first node; and
wherein the n-th stage further comprises a second switching unit providing the voltage of the second node to a third node in response to the sensing clock signal or the carry clock signal.
2. The scan driver according to claim 1 , wherein the n-th stage further comprises a third switching unit providing the voltage of the first node to the third node in response to the scan clock signal.
3. The scan driver according to claim 1 , wherein the n-th stage further comprises a second input unit providing a voltage of a second power to the first node in response to a next carry signal.
4. The scan driver according to claim 3 , wherein the n-th stage further comprises a first control unit providing a voltage of a first power to a first output terminal outputting the current scan signal in response to the next carry signal.
5. The scan driver according to claim 4 , wherein the n-th stage further comprises a second control unit providing the voltage of the second power to the third node in response to a voltage of a fourth node.
6. The scan driver according to claim 5 , wherein the n-th stage further comprises a third control unit providing the carry clock signal to the fourth node in response to the carry clock signal, or providing the voltage of the second power to the fourth node in response to the current carry signal.
7. The scan driver according to claim 1 , wherein the first input unit includes a first transistor connected between a first input terminal receiving the previous carry signal and the first node, and having a gate electrode connected to the first input terminal.
8. The scan driver according to claim 1 , wherein the scan output unit includes a second transistor connected between a scan clock input terminal receiving the scan clock signal and a first output terminal outputting the current scan signal, and having a gate electrode connected to the first node.
9. The scan driver according to claim 1 , wherein the first switching unit includes a third transistor connected between a first input terminal receiving the previous carry signal and the second node, and having a gate electrode connected to the first input terminal.
10. The scan driver according to claim 1 , wherein the sensing output unit includes a fourth transistor connected between a sensing clock input terminal receiving the sensing clock signal and a second output terminal outputting the current sensing signal, and having a gate electrode connected to the second node.
11. The scan driver according to claim 1 , wherein the carry output unit includes a fifth transistor connected between a carry clock input terminal receiving the carry clock signal and a carry output terminal outputting the current carry signal, and having a gate electrode connected to the second node.
12. The scan driver according to claim 1 , wherein the second switching unit includes a sixth transistor connected between the second node and the third node, and having a gate electrode connected to a sensing clock input terminal receiving the sensing clock signal or a carry clock input terminal receiving the carry clock signal.
13. The scan driver according to claim 2 , wherein the third switching unit includes a seventh transistor connected between the first node and the third node, and having a gate electrode connected to a scan clock input terminal receiving the scan clock signal.
14. The scan driver according to claim 3 , wherein the second input unit includes an eighth transistor connected between the first node and a second power input terminal receiving the second power, and having a gate electrode connected to a second input terminal receiving the next carry signal.
15. The scan driver according to claim 4 , wherein the first control unit includes a ninth transistor connected between a first power input terminal receiving the first power and the first output terminal, and having a gate electrode connected to a second input terminal receiving the next carry signal.
16. The scan driver according to claim 5 , wherein the second control unit includes a tenth transistor connected between a second power input terminal receiving the second power and the third node, and having a gate electrode connected to the fourth node.
17. The scan driver according to claim 6 , wherein the third control unit includes:
an eleventh transistor connected between a carry clock input terminal receiving the carry clock signal and a fifth node, and having a gate electrode connected to the carry clock input terminal;
a twelfth transistor connected between the carry clock input terminal and the fourth node, and having a gate electrode connected to the fifth node; a thirteenth transistor connected between a first power input terminal receiving the first power and the fifth node, and having a gate electrode connected to a carry output terminal outputting the current carry signal; and
a fourteenth transistor connected between a second power input terminal receiving the second power and the fourth node, and having a gate electrode connected to the carry output terminal.
18. A scan driver comprising:
a plurality of stages, wherein an n-th stage among the plurality of stages comprises:
a first input unit providing a previous carry signal to a first node in response to the previous carry signal;
a first switching unit providing the previous carry signal to a second node in response to the previous carry signal;
a scan output unit outputting a current scan signal corresponding to a scan clock signal in response to a voltage of the first node;
a sensing output unit outputting a current sensing signal corresponding to a sensing clock signal in response to a voltage of the second node;
a carry output unit outputting a current carry signal corresponding to a carry clock signal in response to the voltage of the second node;
a second switching unit providing the voltage of the second node to a third node in response to the sensing clock signal or the carry clock signal; and
a third switching unit providing the voltage of the first node to the third node in response to the scan clock signal.