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Article | REF: R620 V1

Display. Visualization - OLED displays

Authors: Christophe FÉRY, Philippe LE ROY

Publication date: June 10, 2005

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3. Reliability

The most common definition of lifetime is the time T 1/2 after which the initial luminance L 0 (arbitrarily chosen equal to 100 cd/m 2 ) is halved, at constant operating voltage. It has been shown empirically that this lifetime is related to L 0 and therefore to the initial current density :

L 0 × T 1/2 = Cte

Although the lifetime of organic electroluminescent devices is still a key issue for the industrialization of displays, considerable progress has been made (from a few minutes to several thousand...

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