Driving scheme for high brightness and fast response panel flash
Driving methods and display systems are described for operating a display panel in flash mode. In an embodiment, the driving method includes time multiplexing between at least two panel operation voltage (V OP ) levels including a first V OP level and a second V OP level across all Vdd input lines to a display area, and emitting a first wavelength range from a first subpixel group during application of the first V OP level across all of the Vdd input lines and emitting a second wavelength range from a second subpixel group during application of the second V OP level across all of the Vdd input lines.
1. A method of driving a display panel in a sequential flash mode comprising:
time multiplexing between at least two panel operation voltage (V OP ) levels including a first V OP level and a second V OP level across all Vdd input lines to a display area;
emitting only a first wavelength range from only a first subpixel group designed for a first color emission during application of the first V OP level across all of the Vdd input lines and emitting only a second wavelength range from only a second subpixel group designed for a second color emission different from the first color during application of the second V OP level across all of the Vdd input lines, such that only the first color corresponding to the first wavelength range is emitted during application of the first V OP level across all of the Vdd input lines and only the second color corresponding to the second wavelength range is emitted during application of the second V OP level across all of the Vdd input lines.
2. The method of claim 1 , wherein the second V OP level is applied across all of the Vdd input lines for a longer period of time than the first V OP level is applied across all of the Vdd input lines.
3. The method of claim 2 , further comprising time multiplexing to a third V OP level between the first V OP level and the second V OP level, wherein the third V OP level is lower than both the first V OP level and the second V OP level.
4. The method of claim 3 , wherein the third V OP level is 0 volts.
5. The method of claim 3 , further comprising updating data content for the second subpixel group during application of the third V OP level and prior to application of the second V OP level.
6. The method of claim 1 , further comprising simultaneously starting refresh of a first plurality of rows within the display area during application of the first V OP level across all of the Vdd input lines.
7. The method of claim 6 , further comprising simultaneously starting refresh of a second plurality of rows within the display area during application of the second V OP level across all of the Vdd input lines.
8. The method of claim 1 , further comprising:
modulating an emission pulse width of the first subpixel group by modulating a pulse length from an emission controller to the first subpixel group.
9. The method of claim 8 , wherein an end of the emission pulse width of first subpixel group corresponds to an end of the pulse length from the emission controller to the first subpixel group.
10. The method of claim 1 , further comprising:
modulating an emission pulse width of the first subpixel group by modulating a current source pulse width to all driving transistors of the first subpixel group.
11. The method of claim 10 , wherein an end of the emission pulse width of the first subpixel group corresponds to an end of a pulse length of the current source pulse width to all of the driving transistors of the first subpixel group.
12. A non-transitory machine-readable medium having executable instructions to cause one or more processing units to perform a method to drive a display panel a sequential flash mode, the method comprising:
time multiplexing between at least two panel operation voltage (V OP ) levels including a first V OP level and a second V OP level across all Vdd input lines to a display area;
emitting only a first wavelength range from only a first subpixel group designed for a first color emission during application of the first V OP level across all of the Vdd input lines and emitting only a second wavelength range from only a second subpixel group designed for a second color emission different from the first color during application of the second V OP level across all of the Vdd input lines, such that only the first color corresponding to the first wavelength range is emitted during application of the first V OP level across all of the Vdd input lines and only the second color corresponding to the second wavelength range is emitted during application of the second V OP level across all of the Vdd input lines.
13. The non-transitory machine-readable readable medium as in claim 12 , further comprising time multiplexing to a third V OP level between the first V OP level and the second V OP level, wherein the third V OP level is lower than both the first V OP level and the second V OP level.
14. The non-transitory machine-readable readable medium as in claim 12 , further comprising simultaneously starting refresh of a first plurality of rows within the display area during application of the first V OP level across all of the Vdd input lines.
15. The non-transitory machine-readable readable medium as in claim 14 , further comprising simultaneously starting refresh of a second plurality of rows within the display area during application of the second V OP level across all of the Vdd input lines.
16. The non-transitory machine-readable readable medium as in claim 12 , further comprising modulating an emission pulse width of the first subpixel group by modulating a pulse length from an emission controller to the first subpixel group.
17. The non-transitory machine-readable readable medium as in claim 12 , further comprising modulating a current source pulse width to all driving transistors of the first subpixel group.