Apparatus and method for driving display panel in power saving mode

1. An apparatus for display, comprising:

an active region comprising a plurality of light-emitting elements;

a gate scanning driver operatively coupled to the active region and configured to stop a gate scanning signal to the plurality of light-emitting elements for a period, the period comprising at least one frame; and

a light emitting driver operatively coupled to the active region and configured to cause the plurality of light-emitting elements to emit light in the period, wherein

the light emitting driver is configured provide a light emitting enable signal and a light emitting clock signal in the period and in another frame immediately prior to the period;

the light emitting enable signal has a pulse signal in the at least one frame in the period, a width of the pulse signal is different from a width of another pulse signal in the other frame immediately prior to the period; and

a scanning rate of the light emitting enable signal in the period is less than or equal to a scanning rate in the other frame.

2. The apparatus of claim 1 , wherein

the gate scanning signal comprises a gate scanning enable signal and a gate scanning clock signal; and

a scanning rate of at least one of the gate scanning enable signal and the gate scanning clock signal is equal to zero in the period.

3. The apparatus of claim 2 , wherein the scanning rate of each of the gate scanning enable signal and the gate scanning clock signal is equal to zero in the period.

4. The apparatus of claim 1 , further comprising a source driving driver operatively coupled to the active region and configured to provide a data signal to the plurality of light-emitting elements immediately prior to the period and stop providing the data signal in the period.

5. The apparatus of claim 4 , further comprising a capacitor operatively coupled to the plurality of light-emitting elements and configured to, during the period, retain the data signal provided immediately prior to the period.

6. The apparatus of claim 1 , wherein

the light emitting driver is configured to, in the period, provide the light emitting enable signal having a plurality of pulse signals in the at least one frame, a width of a respective pulse signal in a latter frame being different from a width of a respective pulse signal in a prior frame.

7. The apparatus of claim 6 , wherein widths of the pulse signals in the period gradually decrease.

8. The apparatus of claim 6 , wherein widths of the pulse signals in the period gradually increase.

9. The apparatus of claim 6 , wherein a number of the at least one frame is equal to or less than 4.

10. The apparatus of claim 6 , wherein, in the period, the widths of pulse signals change exponentially with time in the at least one frame such that a luminance by the plurality of light-emitting elements in each of the at least one frame is nominally the same.

11. The apparatus of claim 1 , wherein a ratio of the width of a pulse signal to a respective frame length in the other frame immediately prior to the period is different from a ratio of the width of a pulse signal to a respective frame length in the period.

12. An apparatus for display, comprising:

an active region comprising a plurality of light-emitting elements; and

a light emitting driver operatively coupled to the active region and configured to provide a light emitting signal that causes the plurality of light-emitting elements to emit light in a first period and a second period, wherein

the light emitting signal comprises a light emitting enable signal that scans the plurality of light-emitting elements at a first scanning rate in the first period and a second scanning rate in the second period, the first scanning rate being higher than or equal to the second scanning rate; and

of the light emitting enable signal, a width of a pulse signal in a frame in the first period is different from a width of another pulse signal in a frame in the second period.

13. The apparatus of claim 12 , wherein a ratio of the width of the pulse signal to a respective frame length in is different from a ratio of the width of the other pulse signal to a respective frame length.

14. The apparatus of claim 12 , wherein

the second period comprises a plurality of frames, a frame length of each of the frames second period being greater than each frame length in the first period; and

in the second period, the width of a pulse signal in a latter frame is less than the width of a pulse signal in a prior frame.

15. The apparatus of claim 14 , wherein in the second period, widths of pulse signals in the plurality of frames change exponentially such that a luminance corresponding to each of the plurality of frames is nominally e same.

16. A method for driving a plurality of light-emitting elements on a display panel, comprising:

scanning the plurality of light-emitting elements in a first period;

causing the plurality of light-emitting elements to emit light based on a data signal in the first period;

retaining the data signal;

scanning the plurality of light-emitting elements in a second period;

applying, in the second period, a light emitting enable signal to the plurality of light-emitting elements, wherein determining the light emitting enable signal comprises

determining a width of a first pulse signal in a first frame in the second period to be different from a width of another pulse signal in a frame in the first period such that a luminance corresponding to the first frame in the second period and a luminance corresponding to the frame in the first period are nominally the same; and

causing the plurality of light-emitting elements to emit light based on the data signal and the light emitting enable signal; in the second period.

17. The method of claim 16 , further comprising:

applying, in the first period, a gate scanning enable signal and a gate scanning clock signal to the plurality of light-emitting elements; each of the gate scanning enable signal and the gate scanning clock signal having a non-zero scanning rate; and

applying, in the second period, no gate scanning enable signal and no gate scanning clock signal to the plurality of light-emitting elements.

18. The method of claim 16 , wherein determining the light emitting enable signal further comprises:

determining, in the second period, a width of a second pulse signal in a second frame after the first frame such that a luminance corresponding to the second frame and the luminance corresponding to the first frame are nominally the same.