Display device and driving method thereof
A display device includes: a first pixel connected to a first data line and a first scan line; a second pixel connected to the first data line and a second scan line; a first scan driver connected to a first scan start line and the first scan line; and a second scan driver connected to a second scan start line and the second scan line. In a first frame period, the second scan start line is to be suppled with a second scan start signal having a turn-on level, after a first period elapses after a first scan start signal having a turn-on level is supplied to the first scan start line. In a second frame period, a difference between a time at which the first scan start signal having the turn-on level is supplied and a time at which the second scan start signal having the turn-on level is supplied corresponds to a second period. The second period is shorter than the first period.
1. A display device comprising:
a first scan driver connected to a first scan start line and first scan lines;
a second scan driver connected to a second scan start line and second scan lines; and
pixels connected to the first scan lines and the second scan lines,
wherein a pixel of the pixels comprises:
a first transistor;
a second transistor comprising a first electrode connected to a data line, a second electrode connected to a first electrode of the first transistor, and a gate electrode connected to a respective one of the first scan lines; and
a third transistor comprising a first electrode connected to a gate electrode of the first transistor, a second electrode connected to a second electrode of the first transistor, and a gate electrode connected to a respective one of the second scan lines,
wherein, in a first period of a low frequency driving mode, the second scan start line is to be supplied with a second scan start signal having a turn-on level and a first scan start signal having a turn-on level is to be supplied to the first scan start line,
wherein, in a second period of the low frequency driving mode, the second scan start line is to be supplied with the second scan start signal maintaining a turn-off level and the first scan start signal having the turn-on level is to be supplied to the first scan start line, and
wherein the second period is after the first period.
2. The display device of claim 1 ,
wherein the second transistor is a poly-silicon transistor, and
wherein the third transistor is an oxide semiconductor transistor.
3. The display device of claim 1 ,
wherein the pixel further comprises:
a light emitting diode;
a fourth transistor comprising a first electrode connected to the gate electrode of the first transistor, a second electrode connected to an initialization line, and a gate electrode connected to a third scan line;
a fifth transistor comprising a first electrode connected to a first power line, a second electrode connected to the first electrode of the first transistor, and a gate electrode connected to an emission line;
a sixth transistor comprising a first electrode connected to the second electrode of the first transistor, a second electrode connected to an anode of the light emitting diode, and a gate electrode connected to the emission line; and
a seventh transistor comprising a first electrode connected to the initialization line, a second electrode connected to the anode of the light emitting diode, and gate electrode connected to a fourth scan line.
4. The display device of claim 3 ,
wherein the first, second, fifth, sixth, and seventh transistors are poly-silicon transistors, and
wherein the third and fourth transistors are oxide semiconductor transistors.
5. The display device of claim 3 , further comprising:
a third scan driver connected to a third scan start line and third scan lines comprising the third scan line; and
a fourth scan driver connected to a fourth scan start line and fourth scan lines comprising the fourth scan line.
6. The display device of claim 1
wherein, in the first period, a first scan clock signal supplied to the first scan driver has a first cycle, and
wherein, in the second period, the first scan clock signal has a second cycle longer than the first cycle.
7. The display device of claim 6 , wherein, in the first period, a second scan clock signal supplied to the second scan driver has the first cycle, and
wherein, in the second period, the second scan clock signal maintains the turn-off level.
8. The display device of claim 7 , further comprising:
a first emission driver connected to a first emission stop line and first emission lines; and
a second emission driver connected to a second emission stop line and second emission lines,
wherein each of the pixels further comprises a transistor connected to a respective one of the first emission lines and or of the second emission lines,
wherein, in the first period, the second emission stop line is to be supplied with a second emission stop signal having a turn-off level, after a third period elapses after a first emission stop signal having a turn-off level is supplied to the first emission stop line,
wherein, in the second period, a difference between a time at which the first emission stop signal having the turn-off level is supplied and a time at which the second emission stop signal having the turn-off level is supplied corresponds to a fourth period, and
wherein the fourth period is shorter than the third period.
9. The display device of claim 8 ,
wherein, in the first period, a first emission clock signal supplied to the first emission driver has a third cycle,
wherein, in the second period, the first emission clock signal has a fourth cycle longer than the third cycle.
10. The display device of claim 9 ,
wherein, in the first period, a second emission clock signal supplied to the second emission driver has the third cycle,
wherein, in the second period, the second emission clock signal has the fourth cycle.