Systems and methods for operating pixels in a display to mitigate image flicker
Circuits for programming a circuit with decreased programming time are provided. Such circuits include a storage device such as a capacitor for storing display information and for ensuring a driving device such as a driving transistor drives a light emitting device according to the display information. The present disclosure provides driving schemes for decreasing flickering perceived while displaying video content by introducing idle phases in between in emission phases to increase the effective refresh rate of a display. Driving schemes are also disclosed for reducing the effects of cross-talk by ensuring that programming information is refreshed in a display array that utilizes a driver connected to multiple data lines via a multiplexer.
1. A method of operating a display system, the display system having a plurality of pixel circuits, including a first group of pixel circuits and a second group of pixel circuits, the method comprising:
during a first interval of a single frame, programming the first group of pixel circuits with display information;
during two distinct emission intervals of the single frame and subsequent to the first interval, driving the first group of pixel circuits to emit light according to the display information; and
during a second interval of the single frame subsequent to one of the two distinct emission intervals and prior to the other of the two distinct emission intervals, programming the second group of said pixel circuits with display information.
2. The method according to claim 1 , further comprising:
ceasing to drive the first group of pixel circuits during the second interval; and
during at least one interval of the single frame, driving the second group of pixel circuits to emit light according to the display information.
3. The method according to claim 1 , further comprising:
during the one of the two distinct emission intervals, driving the second group of pixel circuits so as not to emit light.
4. The method according to claim 1 , further comprising:
during the one of the two distinct emission intervals, driving the second group of pixel circuits to emit light according to display information the second group of pixel circuits were programmed with during a previous frame.
5. The method according to claim 1 , wherein the single frame has a plurality of alternating emission and non-emission intervals, and the emission intervals each have a duration substantially equal to a duration of each non-emission interval.
6. The method according to claim 1 , wherein the first group of pixel circuits comprises a first half of said plurality of pixel circuits and said second group of pixel circuits comprises a second half of said plurality of pixel circuits.
7. The method according to claim 6 , wherein the first group of pixel circuits comprises odd rows of the plurality of pixel circuits and the second group of pixel circuits comprises even rows of the plurality of pixel circuits.
8. The method according to claim 1 , wherein the first interval and the second interval are separated only by the one of the two distinct emission intervals.
9. The method according to claim 1 , wherein the first interval occurs in the first half of the single frame and the second interval occurs in the second half of the single frame.
10. The method according to claim 1 , wherein the first interval and the second interval occur in a same half of the single frame.
11. The method according to claim 1 , further comprising:
programming a third group of said plurality of pixel circuits during a third interval of the single frame; and
programming a fourth group of said plurality of pixel circuits during a fourth interval of the single frame,
each of the first, second, third, and fourth intervals being distinct and non-overlapping within the single frame.
12. A display system comprising:
a plurality of pixel circuits arranged to form a display panel, including a first group of pixel circuits and a second group of pixel circuits;
a controller for controlling the programming and emission of said pixel circuits in successive frames, the controller configured to:
during a first interval of a single frame, program the first group of pixel circuits with display information;
during two distinct emission intervals of the single frame and subsequent to the first interval, drive the first group of pixel circuits to emit light according to the display information;
during a second interval of the single frame subsequent to one of the two distinct emission intervals and prior to the other of the two distinct emission interval, program the second group of pixel circuits with display information.
13. The display system according to claim 12 , wherein the controller is further configured to:
cease to drive the first group of pixel circuits during the second interval; and
during at least one interval of the single frame, drive the second group of pixel circuits to emit light according to the display information.
14. The display system according to claim 12 , wherein the controller is further configured to:
during the one of the two distinct emission intervals, drive the second group of pixel circuits so as not to emit light.
15. The display system according to claim 12 , wherein the controller is further configured to:
during the one of the two distinct emission intervals, drive the second group of pixel circuits to emit light according to display information the second group of pixel circuits were programmed with during a previous frame.
16. The display system according to claim 12 , wherein the single frame has a plurality of alternating emission and non-emission intervals, and the emission intervals each have a duration substantially equal to a duration of each non-emission interval.
17. The display system according to claim 12 , wherein the first group of pixel circuits comprises a first half of said plurality of pixel circuits and said second group of pixel circuits comprises a second half of said plurality of pixel circuits.
18. The display system according to claim 17 , wherein the first group of pixel circuits comprises odd rows of the plurality of pixel circuits and the second group of pixel circuits comprises even rows of the plurality of pixel circuits.
19. The display system according to claim 12 , wherein the first interval and the second interval are separated only by the one of the two distinct emission intervals.
20. The display system according to claim 12 , wherein the first interval occurs in the first half of the single frame and the second interval occurs in the second half of the single frame.
21. The display system according to claim 12 , wherein the first interval and the second interval occur in a same half of the single frame.
22. The display system according to claim 12 , wherein the controller is further configured to:
program a third group of said plurality of pixel circuits during a third interval of the single frame; and
program a fourth group of said plurality of pixel circuits during a fourth interval of the single frame,
each of the first, second, third, and fourth intervals being distinct and non-overlapping within the single frame.