However, the cost and complexity of producing such a large OLED panel could still make an OLED iMac an expensive proposition. According to The Elec, LG Display is working on five-stack OLED panels after beginning production of four-stack OLED TV panels in 2025. Apple’s interest in multi-stack OLED technology is reportedly linked to the challenges of using OLED on larger displays for long periods. AdvertisementTwo-stack OLED panels can offer better longevity than traditional single-stack OLED, but they can still suffer from burn-in. But with Apple reportedly continuing to investigate advanced OLED technology, it looks increasingly likely that an OLED iMac is a question of when, rather than if.