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Date Announced: 23 Aug 2011
Company also showcases all-phosphorescent white OLED luminaire in under-cabinet application as example of near-term lighting product opportunity.
EWING, N.J.--(BUSINESS WIRE)-- Universal Display Corporation (NASDAQ:PANL - News), enabling energy-efficient displays and lighting with its UniversalPHOLED® technology and materials, today announced advances in the company’s white OLED lighting technology and showcased a potential application using white OLED lighting panels.
The company’s recent achievements further demonstrate the readiness of all-phosphorescent white OLED panels for use in introductory energy-efficient lighting products. The company reported these advances in two papers delivered during the Society of Photo-optical Instrumentation Engineers (SPIE) Optics + Photonics Conference, being held at the San Diego Convention Center in San Diego, CA from August 21 - 25, 2011.
Dr. Vadim Adamovich, Research Team Leader at Universal Display, presented record-breaking operating lifetimes and other performance advances for the company’s white OLED lighting panels in a paper titled “High Performance Phosphorescent White Stacked OLEDs for Solid State Lighting.”
He reported that the company’s 15 x 15 cm2 warm white PHOLED panel, using a stacked OLED (SOLED) architecture, exceeds the U.S. Department of Energy (DOE) commercial panel target of 10,000 hours (at an initial luminance of 3,000 candelas per square meter (cd/m2)) by more than 20%. This milestone is further evidence that white phosphorescent OLEDs have achieved the performance targets required for initial commercial lighting applications.
Typically, the company reports white OLED lighting panel performance based on a simple red-green-blue (RGB) OLED design that uses a minimal number of layers. This SOLED design incorporates more layers as a means to significantly extend device lifetime. The single RGB OLED design should require fewer steps to manufacture, while the stacked OLED design can enhance lifetime performance and is gaining momentum in the industry. Using the all-phosphorescent SOLED design, the company’s 15 x 15 cm2 white OLED lighting panel achieves 90,000 hours (to 70% of an initial luminance of 1,000 cd/m2), a luminous efficacy of 55 lumens per Watt (lm/W) and a color rendering index (CRI) of 86. This corresponds to a similar white SOLED pixel that achieves 120,000 hours (to 70% of an initial luminance of 1,000 cd/m2), 63 lm/W, and a CRI of 83.
Dr. Peter Levermore, Research Scientist at Universal Display, also presented recent advances in a paper titled “Phosphorescent OLEDs for High Efficacy Long Lifetime Solid State Lighting.” During his talk, he showcased an all-phosphorescent, white OLED luminaire designed into an under-cabinet lighting system as an example of an application that white OLED panels are ready to address (refer to the photograph below).
Funded, in part, under a DOE Solid State Lighting program titled “High Efficacy Integrated Under-Cabinet Phosphorescent OLED Lighting Systems,” this prototype exhibits key advantages that OLEDs can offer for lighting. The warm white OLED panels emit uniform, dimmable and energy-efficient light, offering a power efficacy of 70 lm/W when operated at 190 lumens (~1000 cd/m2), and 61 lm/W when at 420 lumens (~2200 cd/m2).
The panels operate at a low voltage of ~4 V and, by comparison to incandescent and other lighting technologies that generate heat during operation, generate minimal heat. In addition, their very thin form factor and modularity create significant design advantages for this and other lighting applications.
“As the lighting market continues to call for more energy-efficient lighting technologies, we continue to demonstrate white OLED innovations using our UniversalPHOLED technology and materials. Through the use of new material systems and panel designs, our team has achieved yet another important milestone toward meeting the full set of solid state lighting performance targets set by the U.S. Department of Energy,” said Steven V. Abramson, President and Chief Executive Officer of Universal Display.
“By demonstrating white OLED luminaires in an under-cabinet application, we are also highlighting the numerous advantages and benefits that white OLED panels offer to this and a variety of other lighting applications. Our recent advances further ready white OLEDs for a variety of near-term specialty lighting applications and also accelerate their commercial potential for general lighting.”
Source: Universal Display Corporation
E-mail: via web site
Web Site: www.universaldisplay.com
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