Published On: Wed, Jun 24th, 2009

DuPont’s OLED technology achieves one million hours lifetime

DuPont, a science-based products and service company, announced this Monday (June 22) the development of its new, proprietary “Gen-3″ solution-based organic light emitting diode (OLED) materials technology that can last a record lifetime of more than 1 million hours – equivalent to over 100 years of constant use.

The milestone achievement for the Gen-3 green OLED material has led to substantial performance gains for printable OLED light-emitting materials, while two new Gen-3 solution blue materials also have been developed that set new standards for longevity and color. These OLED materials can meet or exceed the performance of today’s vapor deposited materials, and are paving the way for manufacturers to develop future low-cost OLED displays for use in mobile devices, notebook PCs and televisions.

Although green material lifetimes already exceed those of red and blue, the significance is that in a display, green contributes more to the white brightness. The longer lifetime also can lead to an increase in total display lifetime.

Historically, performance of blue light-emitting materials has been the most challenging, however, DuPont Gen 3 solution blue materials are demonstrating significant performance gains. One of the blue materials has demonstrated a lifetime of 38,000 hours, which is one of the longest blue OLED material lifetimes publicly reported. A second material has been developed with exceptionally deep blue color coordinates, with a lifetime of approximately 41,000 hours. As commonly reported in the industry, materials lifetimes refers to the time for the luminance to decrease to half the initial value starting from 1,000 cd/m2, as estimated from accelerated tests.