A report from TheElec claims that Samsung may launch a new blue phosphorescent OLED panel in 2025, although industry observers originally expected a 2024 debut. It seems that the development of new materials for blue sub-pixels is not going well.
Samsung's current display technology implements phosphorescent green and red subpixels, but the blue diodes still use fluorescence. Therefore it cannot be called PHOLED as this is technically incorrect. The new phosphorescent diodes have an internal luminous efficiency of 100%, while blue fluorescent diodes are capped at 25%.
If Samsung could make the right blue phosphorescent diodes, it would have the potential to greatly improve energy efficiency. There's a big caveat to consider, though - blue phosphorescent diodes have about 55% the lifetime of blue fluorescent diodes. That's a pretty big flaw, and it's why some people familiar with the matter don't believe Samsung will be able to put the technology into commercial products before 2025.
Regardless, Samsung will continue its R&D efforts as it becomes the first manufacturer to mass-produce PHOLED panels and potentially gain a huge market advantage in the coming years.