If you’ve never heard of PHOLED, you’re not alone. The technology is already partially at the core of the best OLED TVs and soon TVs from Samsung and LG could be using it entirely for the subpixels in every OLED display pixel.
The company behind PHOLED is betting on PHOLED being the future. Universal Display Corporation (UDC) has been making PHOLED — which stands for phosphorescent organic light emitting diode — for years and now is expanding its operations. The company just announced the opening of a new PHOLED manufacturing plant in Shannon, Ireland to manufacture more of its signature phosphorescent materials for OLED displays.
While the factory was just officially unveiled to the world, UDC and its partner PPG have been working on this new E.U. factory for a while now. According to Janice K. Mahon SVP, Technology Commercialization & GM, Commercial Sales Business at Universal Display Corporation, the factory has been in development since February 2021 and has already begun production.
UDC could not specify which customers will be serviced by this new plant — LG Display and Samsung Display have recently been tipped to adopt fully PHOLED TV displays in the near future — but Mahon did state that the factory will “service existing and future customers whose display products require UDC’s state-of-the-art, energy-efficient phosphorescent OLED emissive materials” and that PHOLED materials have already started rolling out to display makers. Clearly, UDC expects that PHOLED isn’t going away anytime soon.
What is PHOLED and why does it matter?
Currently, OLED displays already partially use PHOLED technology. An OLED pixel is made up of three subpixels: red, green and blue (RGB), though LG OLED TVs add a fourth white subpixel. These subpixels are either phosphorescent subpixels or fluorescent subpixels — and these aren’t created equal.
The biggest difference? Fluorescent subpixels are significantly less power efficient. In fact, Mahon says fluorescent subpixels are just 25% as efficient as their phosphorescent counterparts.
Most OLED displays already use red and green phosphorescent subpixels developed by UDC. In fact, Mahon says that UDC PHOLED materials are “found in virtually every commercial OLED product around the world.” But everyone still uses fluorescent blue subpixels — largely because UDC is still developing a phosphorescent alternative (Mahon says blue PHOLED is still in R&D).
However, with this new factory in Ireland, UDC could quickly ramp up production of blue PHOLED subpixels to quickly transition the OLED TV market to fully PHOLED displays. And that’s good news because significantly more efficient TVs would be a major upgrade for everyone.
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