Researchers at Samsung in Korea and Stanford University in the US have developed and patented a new architecture for OLED displays with resolution up to 10,000 pixels per inch (PPI).Β by Nick Flaherty @ eenewsembedded.com
The design uses adapted an electrode ultra-thin solar panels with a base layer of reflective metal with nanoscale corrugations, called an optical metasurface.
The metasurface can manipulate the reflective properties of light and thereby allow the different colours to resonate in the pixels. These resonances are key to improving the light extraction from the OLEDs.
Compared to OLED displays in today smartphones with resolution of 500PPI, the metaphonic pixel array will be able to provide brighter and better colour accuracy for virtual reality displays.
Weβve taken advantage of the fact that, on the nanoscale, light can flow around objects like water,β said Mark Brongersma, professor of materials science and engineering at Stanford who worked withΒ Won-Jae Joo at the Samsung Advanced Institute of Technology (SAIT).Β βThe field of nanoscale photonics keeps bringing new surprises and now weβre starting to impact real technologies. Our designs worked really well for solar cells and now we have a chance to impact next generation displays,β he said.