Voltage supply amplitude modulation driving outlier microLEDs

1. A method of generating an image on a display, the method comprising:

providing, by a power supply, an alternating current voltage (V LED ) having a minimum voltage (V MIN ) and a maximum voltage (V MAX );

identifying, by a controller, a micro light emitting diode (uLED) having a forward voltage (V f ) greater than the V MIN ; and

altering, by the controller, a time of a rising edge of a pulse width modulation (PWM) on time of the uLED such that the V f of the uLED is less than the V LED for the PWM on time.

2. The method of claim 1 , further comprising further identifying, by the controller, that the PWM on time of the uLED overlaps with a time at which the V LED is less than the V f before altering the time of the rising edge.

3. The method of claim 2 , further comprising identifying, by the controller, that an amount of time the V f is less than the V LED is less than the PWM on time.

4. The method of claim 3 , further comprising, by the controller in response to identification of the amount of time, reducing the PWM on time and increasing a peak current of a pixel driver at a uLED driver of the uLED.

5. The method of claim 3 , further comprising causing, by the controller in response to identification of the amount of time, the V MAX and the V MIN to increase in magnitude while maintaining a same frequency.

6. The method of claim 2 , wherein identifying that the PWM on time of the uLED overlaps with the time at which the V LED is less than the V f includes determining respective times corresponding to a rising edge and a falling edge of the PWM on time based on a duty cycle of the uLED.

7. The method of claim 6 , wherein identifying the PWM on time of the uLED overlaps with the time at which the V LED is less than the V f includes using a frequency and a reference time indicating a time at which the V LED equals the V MAX or the V MIN to identify one of the time of the rising edge or the falling edge overlaps with the time at which the V LED is less than the V f .

8. The method of claim 1 , further comprising modifying a drive current of the uLED with the V f greater than the V MIN such that an average drive current of the uLED is driven to a target average power.

9. A display comprising:

a power supply configured to provide an alternating current voltage (V LED ) with a minimum voltage (V MIN ) and a maximum voltage (V MAX) ;

a micro light emitting diode (uLED) display including uLEDs;

uLED drivers coupled to respective ones of the uLEDs; and

a controller configured to:

identify a uLED of the uLEDs with a forward voltage (V f ) greater than the V MIN ; and

in response to identification of the uLED, alter a time of a rising edge of a pulse width modulation (PWM) on time of the uLED such that the V f of the uLED is less than the V LED for the PWM on time.

10. The display of claim 9 , wherein the controller is further configured to identify that the PWM on time of the uLED overlaps with a time at which the V LED is less than the V f before altering the time of the rising edge.

11. The display of claim 9 , wherein the controller is further configured to identify that an amount of time the V f is less than the V LED is less than the PWM on time.

12. The display of claim 11 , wherein, in response to identification of the amount of time, the controller is further configured to reduce the PWM on time and increase a peak current of a pixel driver at a uLED driver, among the uLED drivers, of the uLED.

13. The display of claim 11 , wherein in response to identification of the amount of time, the controller is further configured to cause the V MAX and the V MIN to increase in magnitude while maintaining a same frequency.

14. The display of claim 10 , wherein identification by the controller that the PWM on time of the uLED overlaps with the time at which the V LED is less than the V f includes the controller being configured to determine respective times corresponding to a rising edge and a falling edge of the PWM on time based on a duty cycle of the uLED.

15. The display of claim 14 , wherein identification by the controller that the PWM on time of the uLED overlaps with the time at which the V LED is less than the V f includes the controller being configured to use a frequency and a reference time indicating a time at which the V LED equals the V MAX or the V MIN to identify one of the time of the rising edge or the falling edge overlaps with the time at which the V LED is less than the V f .

16. A non-transitory machine-readable medium including instructions that, when executed by a machine, cause the machine to perform operations comprising:

providing, by a power supply, an alternating current voltage (V LED ) having a minimum voltage (V MIN ) and a maximum voltage (V MAX );

identifying, by a controller, a micro light emitting diode (uLED) having a forward voltage (V f ) greater than the V MIN ; and

altering, by the controller, a time of a rising edge of a pulse width modulation (PWM) on time of the uLED such that the V f of the uLED is less than the V LED for the PWM on time.

17. The non-transitory machine-readable medium of claim 16 , wherein the operations further comprise further identifying, by the controller, that the PWM on time of the uLED overlaps with a time at which the V LED is less than the V f before altering the time of the rising edge.

18. The non-transitory machine-readable medium of claim 16 , wherein the operations further comprise identifying that an amount of time the V f is less than the V LED is less than the PWM on time.

19. The non-transitory machine-readable medium of claim 18 , wherein the operations further comprise, in response to identification of the amount of time, reducing the PWM on time and increasing a peak current of a pixel driver at a uLED driver of the uLED.

20. The non-transitory machine-readable medium of claim 18 , wherein the operations further comprise causing, in response to identification of the amount of time, the V MAX and the V MIN to increase in magnitude while maintaining a same frequency.