Universal Display Corporation (Nasdaq: OLED), enabling energy-efficient displays and lighting with its UniversalPHOLED® technology and materials, today announced OLED technology and material advancements, which include a novel display architecture and a new approach for color tunable phosphorescent white OLED lighting. These advances were highlighted by Universal Display scientists in three separate papers presented earlier today during the 2014 Society for Information Display (SID) International Symposium, Seminar, and Exhibition.
In an invited paper titled “Color Tunable Phosphorescent White-OLED Lighting Panel”, Universal Display’s Dr. Michael Weaver presented data on a new approach of fabricating red-green-blue (RGB) monochrome stripes and controlling each of the stripes with separate current drivers. This new method has the potential to improve white OLED lighting panel performance, manufacturing yield, brightness uniformity and color tunability. The latter is a key benefit of solid-state OLED lighting. The paper was co-authored by Dr. Xin Xu, Dr. Huiqing Pang, Dr. Ruiqing Ma, Dr. Pierre-Luc Boudreault, Dr. Alex Dyatkin, Dr. Sean Xia and Dr. Julie Brown and Acuity Brands’ Dr. Min-Hao Lu.
In this paper, Dr. Weaver discussed the recent demonstration of a 15 cm x 15 cm color tunable white OLED lighting panel based on an RGB monochrome striped architecture. Using this new architecture, a panel efficacy of 63 lumens per Watt (lm/W) with a correlated color temperature (CCT) of 3,000K at 2,500 cd/m 2 was achieved. Additionally, the company has demonstrated an Energy Star all-phosphorescent warm white OLED with 100 lm/W power efficacy and an LT70 lifetime of 60,000 hours at 1,000 cd/m 2. Dr. Weaver also reported a remarkable high R9 warm white WOLED with CRI R9 of 96.
By improving white OLED lighting device performance and tunability, Universal Display’s PHOLED technology and materials have the potential to meet growing demand for tunable white OLED lighting products. A number of UDC’s customers have already previewed these new materials for use in tunable white OLED lighting applications.
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