Theoretical and experimental analysis of RGBW display based on OLEDs/PLEDs

Flat panel display (FPD) with a novel RGBW sub-pixel format utilizing organic/polymer light-emitting devices (OLEDs/PLEDs) was analyzed theoretically and experimentally. Using the fitting curves of the OLEDs/PLEDs’ electroluminescent (EL) characteristics, RGBW sub-pixel display is clearly shown to be more energy efficient than traditional RGB sub-pixel display when the calculation is based on uniform luminance color space, especially as the efficiency of the OLEDs/PLEDs is getting higher. The relationship between the area proportion of the primary sub-pixels and the power consumption of the RGBW display panel was also investigated to further reduce the energy waste, and an optimized area proportion of blue and white primaries in RGBW display panel was presented.