Display apparatus
A display apparatus includes a pixel part including a plurality of pixels, and a gate driving circuit. Each of the plurality of pixels is driven in one first scan period and one or more second scan periods during one frame in a driving mode driven at a first driving frequency lower than a maximum driving frequency.
1. A display apparatus comprising a plurality of pixels, each of the plurality of pixels comprising:
a first transistor;
a second transistor connected between a gate of the first transistor and a data line, a gate of the second transistor being connected to a first scan line;
a third transistor connected between the gate of the first transistor and a first voltage line, a gate of the third transistor being connected to a second scan line;
a fourth transistor connected between a second terminal of the first transistor and a second voltage line, a gate of the fourth transistor being connected to a third scan line;
a fifth transistor connected between a first terminal of the first transistor and a third voltage line, a gate of the fifth transistor being connected to a control line;
a first capacitor connected between the gate of the first transistor and the second terminal of the first transistor;
a second capacitor connected between the third voltage line and the second terminal of the first transistor; and
an organic light-emitting diode comprising an anode connected to the second terminal of the first transistor.
2. The display apparatus of claim 1 , wherein
each of the plurality of pixels is driven in one first scan period and at least one second scan period during one frame in a driving mode driven at a first driving frequency lower than a maximum driving frequency,
a third second scan signal is supplied to the third scan line and a control signal is supplied to the control line according to the maximum driving frequency, and
a first scan signal is supplied to the first scan line and a second scan signal is supplied to the second scan line according to the first driving frequency.
3. The display apparatus of claim 2 , wherein in case that the first driving frequency is 1/n of the maximum driving frequency,
each of a number of the first scan signal supplied to the first scan line and a number of the second scan signal supplied to the second scan line is 1,
each of a number of the third second scan signal supplied to the third scan line and a number of the control signal supplied to the control line is n, and
n is a natural number.
4. The display apparatus of claim 2 , wherein a timing in which the third scan signal is supplied to the pixel in the first scan period and a timing in which the third scan signal is supplied to the pixel in the second scan period are substantially identical to each other.
5. The display apparatus of claim 2 , wherein
the first scan period comprises a first non-light-emitting period and a first light-emitting period, and
each of the at least one second scan period comprises a second non-light-emitting period and a second light-emitting period.
6. The display apparatus of claim 5 , wherein
the third scan signal is supplied to the third scan line before and after the first scan signal is supplied to the first scan line in the first non-light-emitting period of the first scan period,
the third scan signal is supplied to the third scan line twice in the second non-light-emitting period of the second scan period, and
a timing in which the third scan signal is supplied to the pixel in the first scan period and a timing in which the third scan signal is supplied to the pixel in the second scan period are substantially identical to each other.
7. The display apparatus of claim 5 , wherein the first scan period comprises:
a first period in which the second scan signal and the third scan signal each have a gate-on voltage level, and the first scan signal and the control signal each have a gate-off voltage level;
a second period in which the first scan signal and the third scan signal each have a gate-off voltage level, and the second scan signal and the control signal each have a gate-on voltage level;
a third period in which the first scan signal has a gate-on voltage level, and the second scan signal, the third scan signal, and the control signal each have a gate-off voltage level; and
a fourth period in which the first scan signal, the second scan signal, and the third scan signal each have a gate-off voltage level, and the control signal has a gate-on voltage level, and
wherein the fourth period is the first light-emitting period.
8. The display apparatus of claim 7 , wherein
the at least one second scan period comprises a fifth period in the second non-light-emitting period, and
in the fifth period, the second scan signal has a gate-on voltage level and the first scan signal, the third scan signal, and the control signal each have a gate-off voltage level.
9. The display apparatus of claim 8 , wherein
the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the first scan period, and
the control signal is shifted from the gate-off voltage level to the gate-on voltage level once in the second scan period.
10. The display apparatus of claim 8 , wherein
the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the first scan period, and
the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the second scan period.
11. The display apparatus of claim 8 , wherein
the first scan period further comprises, between the third period and the fourth period, a sixth period in which the first scan signal, the second scan signal, and the control signal each have the gate-off voltage level, and the third scan signal has the gate-on voltage level, and
the at least one second scan period further comprises, subsequent to the fifth period before the control signal is shifted from the gate-off voltage level to the gate-on voltage level,
a seventh period in which the third scan signal has the gate-on voltage level.
12. The display apparatus of claim 11 , wherein
the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the first scan period, and
the control signal is shifted from the gate-off voltage level to the gate-on voltage level once in the second scan period.
13. The display apparatus of claim 11 , wherein
the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the first scan period, and
the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the second scan period.
14. The display apparatus of claim 8 , wherein each of the plurality of pixels further comprises a third capacitor connected between the anode and a fourth voltage line.
15. The display apparatus of claim 14 , wherein a voltage supplied to the fourth voltage line is a voltage supplied to a cathode of the organic light-emitting diode or a voltage greater than a voltage supplied to the second voltage line.
16. The display apparatus of claim 14 , wherein
the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the first scan period, and
the control signal is shifted from the gate-off voltage level to the gate-on voltage level once in the second scan period.
17. The display apparatus of claim 14 , wherein
the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the first scan period, and
the control signal is shifted from the gate-off voltage level to the gate-on voltage level twice in the second scan period.
18. The display apparatus of claim 14 , wherein
the first scan period further comprises, between the third period and the fourth period, a sixth period in which the first scan signal, the second scan signal, and the control signal each have the gate-off voltage level, and the third scan signal has the gate-on voltage level, and
the at least one second scan period further comprises, subsequent to the fifth period before the control signal is shifted from the gate-off voltage level to the gate-on voltage level,
a seventh period in which the third scan signal has the gate-on voltage level.
19. The display apparatus of claim 18 , wherein
a fourth voltage of a low level is supplied to the fourth voltage line from before a start of the first period to after the sixth period in the first scan period,
the fourth voltage of a low level is supplied to the fourth voltage line from before a start of the fifth period to after the seventh period in the at least one second scan period, and
the fourth voltage of a high level is supplied to the fourth voltage line during the first light-emitting period and the second light-emitting period.
20. The display apparatus of claim 18 , wherein a timing in which the third scan signal is supplied to the pixel in the first scan period and a timing in which the third scan signal is supplied to the pixel in the second scan period are substantially identical to each other.
21. The display apparatus of claim 1 , wherein each of the first transistor to the fifth transistor is an N-channel oxide semiconductor transistor.