What material did PPG Industries use to develop its low-cost integrated OLED substrate, and how does it differ from current display glasses?

PPG Industries used inexpensive soda-lime 'float' glass to develop its low-cost integrated OLED substrate — a material that is 'significantly cheaper than currently used display glasses.' This substitution represents a fundamental cost-reduction strategy, directly addressing the high material expense associated with conventional OLED substrates, which typically rely on more specialized and costly glass formulations such as alkali-free or borosilicate glass. By leveraging widely manufactured soda-lime float glass — the same type commonly used in windows and basic architectural applications — PPG enables scalable, high-volume production without requiring new or expensive manufacturing infrastructure.

What key technological improvements did PPG incorporate into its new OLED substrate, and what performance gain do they deliver?

PPG incorporated two critical innovations: the development of alternative anodes and scalable light-extraction technologies — both supported by U.S. Department of Energy (DOE) funding — resulting in an efficiency improvement 'by over 30%.' These enhancements work synergistically: the alternative anodes likely reduce electrical resistance and optical losses at the electrode interface, while the light-extraction technologies mitigate total internal reflection and waveguide effects that trap photons within the OLED stack. Together, they significantly boost external quantum efficiency — the ratio of emitted photons to injected electrons — without compromising manufacturability. The emphasis on 'scalable' light-extraction methods underscores PPG’s focus on transitioning from lab-scale prototypes to high-yield, roll-to-roll or sheet-to-sheet industrial processes suitable for rigid general-illumination applications.

PPG Industries Develops a Low-Cost Integrated OLED Substrate

Apr 13, 2026

PPG Industries developed a low-cost integrated OLED substrate using soda-lime glass, achieving over 30% efficiency improvement with DOE funding. The technology targets commercialization for rigid general-illumination OLEDs.

Department of Energy (.gov)

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