NHK has theorized a way to fix an OLED exposure issue with iOLED.
The National Broadcasting Corporation of Japan, NHK, is troubled by one aspect of OLED. But rather than introduce a problem, NHK has theorized a solution.
OLED pixels, when exposed to open air, can suffer a quick and severe degradation of brightness. In one example from NHK, the OLED pixels fell to 50% of original brightness in just 100 days. Naturally, part of the current challenge for OLED production is to prevent this kind of open air exposure by ensuring that OLED products are correctly sealed.
In contrast, NHK's solution is a two-step shift in OLED design. First the cathode layer needs to be covered with a new material that is less susceptible to moisture and oxygen. This new cathode layer then needs to exchange position with the anode layer in order to display correctly. This exchange in positions is referred to as an inversion, for which NHK has dubbed the design iOLED.
NHK has promised to release full report on its findings at the end of the month, at which time critical analysis by engineers the world can be applied.
Author: Brian Hoss