Ultra-large moiré-less autostereoscopic three-dimensional light-emitting-diode displays

Large-scale autostereoscopic three-dimensional (3D) light-emitting-diode (LED) displays can provide high-quality, even immersive, visual experiences. However, the unique structural characteristics of the LED display panel can enhance moiré effects during parallax generation. We present a novel method for quantitatively characterizing the moiré effect in autostereoscopic 3D-LED displays using a model applying geometrical ray tracing and a brightness distribution stack. An optical diffuser (OD) device for moiré reduction and performance balance is designed and the influence of several key device parameters on moiré pattern features are examined in autostereoscopic 3D-LED displays for the first time. Using the obtained optimal parameters, we assembled an ultra-large moiré-less autostereoscopic 3D-LED display prototype, which was experimentally shown to be capable of reducing moiré fringes without noticeable increase in crosstalk or significant reduction in visual quality. Finally, the effects on the moiré and crosstalk effect of altering key influencing factors were examined.