Monochrome LED displays, such as those used for augmented reality (AR) applications, can be unpleasant to view because of the single color used, which is often quite saturated. Approaches to address the issue with the use of phosphors or of LEDs of multiple colors are ineffective or impractical. This disclosure describes techniques to widen the spectrum of colors displayed via monochrome LED displays by occasionally spiking the voltage driving the LED to a higher level. The result is a display appearance that is less saturated and softer.
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Muldoon, Ian Rickard, "Widening the Spectrum for Monochrome LED Displays with Occasional Voltage Spikes", Technical Disclosure Commons, (August 24, 2022)