There are a number of interesting possibilities in the display field with OLED technology. It was not long ago that HP unveiled the first working prototype of a supposedly The OLED windows are likely to be more energy-efficient than a selection of light bulbs around the room too. It will take a while for this technology to mature and hit the market â or most importantly to become affordable. According to Philips, there are still a number of problems with production, specifically mentioning size constraints and that all OLEDs need to be created in a 'clean' room as even a single particle could destroy an entire screen. Regardless, it certainly looks impressive and is an interesting glimpse into the future of displays.