I know what OLED is, but loss of screen rigidity, or simply using a different material than a traditional OLED display may cause artifacts in the picture quality. If your flexible OLED is stored in the retracted position for a few weeks, and you come home and extend it, will it retain any of the curvature from being stored? As the linked video stated, no one really knows at this point if there are any trade-offs in order to incorporate a retractable screen just yet, but I wouldn't be surprised if there's a least a few minor flaws that perhaps don't mean anything to the average consumer, but would be a non-starter for videophile/audiophile customers (the ones paying $15K+ for higher end A/V equipment)