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A giant leap in OLED technology called 'PHOLED' is only a few years out, with Apple suppliers Samsung & LG Display at the forefront

1 X cover blue PHOLED FOR FUTURE DISPLAYS(Click on image to Greatly Enlarge)

Display technology is rapidly advancing and widely diversifying. Apple is switching to OLED big time for the iPhone 15 and future iPads and MacBooks. A report posted this week pointed to Apple preparing to actually manufacture microLED displays, likely for the Apple Watch Ultra. The report from Nikkei Asia surmised that it would eventually move to iPhone displays, which is a bit of stretch at best. Also in the news this week was Samsung securing advanced OLEDoS display technology for future Apple XR Headsets. Beyond OLEDoS delivering 3000-4000ppi, is LEDoS delivering up to 7,000ppi.   

Other possible display technology that could one day work into Apple's supply chain is FOLED for foldable devices and, more importantly, Blue PHOLED which LG and Samsung are now investigating for next-gen OLED displays. It's a display technology that would appeal to Apple for its energy efficiency alone. "Changing the blue OLED from fluorescence to phosphorescence can increase the luminous efficiency by 4 times."

3 X PHOLED(Click on image to Enlarge)

PHOLED-based displays could start rolling out for 2025 OLED TVs. At present, all OLED displays from Samsung and LG for Apple iPhones use technology patented by Universal Display Corporation (UDC) headquartered in New Jersey with International Offices in China, Hong Kong, Japan, South Korea, Taiwan and Ireland where they just opened a new state-of-the-art OLED manufacturing site this past week. UDC will manufacture UniversalPHOLED materials at this new facility.

Universal Display's SVP CTO, Julie Brown explains the background and basics of UniversalPHOLED Phosphorescent OLED Technology in the YouTube video presented below.


The breakthrough for Blue PHOLED was publicized back in 2015 in an IEEE Spectrum report, with the work on this technology sponsored by UDC and the U.S. Air Force. At the time, lead author Jaesang Lee, an electrical engineer at the University of Michigan, Ann Arbor stated that "A combination of high brightness and deep blue color is quite revolutionary." The actual breakthrough was announced back in 2005.

For those interested in learning about next-generation OLED displays that Apple will likely adopt from Samsung and LG Displays over time, check out UDC's overview of the technology covering UniversalPHOLED Materials; What is Phosphorescent OLED (PHOLED)?; UniversalPHOLED Materials Portfolio; From Design to Manufacturing; Design for Environment and more.     

It was made known in a report from Electronic Times Internet news (etnews) in Korea last month that OLED material specialist Universal Display (UDC) had announced that it plans to launch a blue phosphor material next year. UDC Vice President Mike Hack told etnews: "We achieved the initial specification target of the blue phosphor device last year, and we plan to start mass production from 2024."

4 X  Michael Hack  VP of UDC

At present, OLED displays use red and green as phosphor elements, and blue as fluorescent devices. Phosphorescence has an efficiency of converting electrical energy into light close to 100%, while fluorescence is only 25%.

Improving blue has been a challenge for the display industry, and it is understood that UDC is approaching the commercialization of blue phosphor materials.

"By changing the blue OLED from fluorescence to phosphorescence, the luminous efficiency can be increased by four times," he explained, "It will be possible to improve the efficiency of the overall product such as the battery, and the performance and brightness of the display will also improve."

Hack added that "The specific application schedule will be decided by (customers) Samsung Display and LG Display."

Once LG and Samsung officially announce that they're adopting this technology for TVs and smart devices like smartphones in the 2024-2026 timeline, the rumor mill will then kick in with various predictions about it's arrival and which OEMs will be first to adopt PHOLED displays.

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