August 10, 2005—Universal Display has demonstrated a white OLED lighting panel with a record power efficiency of 30 lumens per watt (lm/W) using the company’s PHOLED phosphorescent OLED technology, the company said. During the demonstration at the recent International Society for Optical Engineering Symposia and Exhibition, Universal Display claimed it is the first to achieve 30 lumens per watt white OLED.
Universal Display explains that the “record-breaking” white OLED performance is based on a novel panel design that consists of an array of red, green, and blue colored stripes. Adjusting the intensity of each primary color generates infinite shades of white color typically characterized by color temperature and color rendering index.
Power efficiencies of the 6″ x 6″ prototype panel were measured at color temperatures between 2,900 and 5,700 degrees Kelvin (K). The record 30 lm/W OLED power efficiency was achieved at a color temperature of 4,000K, which is comparable to the color temperature and power efficiency of a cool fluorescent lamp. By comparison, explains Universal Display, typical incandescent light bulbs emit light at around 14-20 lm/W with a color temperature of 2,900 K.
The record performance of this OLED panel is also based on the company’s proprietary PHOLED technology that enables very high efficiency of the constituent red, green, and blue stripes. The work was partially funded by a US Department of Energy Small Business Innovation Research grant.
Universal Display is a world leader in developing and commercializing innovative OLED technologies and materials for use in the electronic flat panel display, lighting, and other opto-electronic markets.
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