LG Display unlocks blue PHOLED tech

Historically, blue OLEDs have been a nightmare for engineers. They burn out faster, drain more power, and are notoriously difficult to stabilize due to their high-energy, short-wavelength emissions. While red and green phosphorescent OLEDs have long been in commercial use, blue has stubbornly remained fluorescent, offering lower efficiency and higher power demands.

Now LG Display, in collaboration with Universal Display Corporation (UDC), has cracked the code. The company’s new hybrid Tandem OLED stack places a blue fluorescent emitter below a blue phosphorescent one. The result is a display that cuts power consumption by about 15 percent without sacrificing lifespan, achieving a rare balance of efficiency and stability that has eluded OLED researchers for years.

LG’s dual-stack approach is not just a technical workaround, it is a manufacturing-ready solution. The company has already verified its viability on real production lines and filed patents in both South Korea and the United States. A prototype will debut at SID Display Week 2025 in San Jose, with small and mid-size panels aimed at smartphones, tablets, and eventually AI PCs and AR/VR devices.

For years, insiders expected Samsung to win this race, with rumors swirling around a debut in the Galaxy Z Fold 7. But LG got there first, and this might be the OLED revolution that makes your next screen brighter, thinner, and far more efficient.

While LG Display breaks new ground in OLED science, its sibling company LG Electronics is quietly leaning on TCL to stay competitive. LG’s latest QNED evo TVs, aimed at reclaiming lost ground from Samsung and Hisense, are built using MiniLED panels manufactured by TCL, the very rival that’s rapidly expanding its global footprint. In fact, after LG sold its final LCD factory to TCL, much of its new panel supply is now sourced straight from China.

(Source)

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