Fully electromagnetic wave optic simulation and analyses of the cross-scale reflective 3D OLED pixel configuration

To enhance optical out-coupling and power efficiency of organic light-emitting diode (OLED) displays, a reflective three-dimensional (3D) OLED pixel structure had been reported previously. The multi-scale optical simulation combining wave and ray optics used for optical modeling of such cross-scale structures in the previous work, although more effective in computing time and resources, was not able to treat all detailed emission properties. In this work, by reducing the computing load to a feasible scale via refining the meshing, symmetry simplification and a few other strategies, we successfully conducted the full electromagnetic wave optics simulation of the cross-scale 3D OLED pixel structure and used it to treat all detailed emission properties (either spectrally integrated or wavelength resolved). The reported simulation approach and strategy shall provide a useful guide for handling similar cross-scale numerical electromagnetic wave optics simulation.