Organic electroluminescence device and method of its...

H - Electricity – 05 – B

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H05B 33/14 (2006.01) H01L 51/30 (2006.01) H01L 51/50 (2006.01) H05B 33/10 (2006.01)

Patent

CA 2304585

An organic electroluminescence device the emission luminance of which does not diminish even after long-time drive, and which is durable and practical and is preferably used for, e.g., a display of information equipment. An organic electroluminescence device has a pair of electrodes, i.e., an anode and a cathode, and organic compound layers which include at least an organic light- emitting layer and which are sandwiched between the paired electrodes. The strength of the main peak of the spectrum determined by mass spectrometry of at least one layer of the organic compound layers and the strengths of the sub- peaks meet a specific relationship. A method for manufacturing such a device and an organic EL film are also disclosed.

L'invention concerne un dispositif électroluminescent organique dont la luminance émise ne faiblit pas même après une durée d'utilisation prolongée, ce dispositif étant par ailleurs à la fois durable et pratique, et de préférence utilisé pour l'écran d'un équipement d'information, par exemple. Ce dispositif électroluminescent organique présente deux électrodes, c'est-à-dire une anode et une cathode, ainsi que plusieurs couches d'un composé organique, qui comprennent au moins une couche organique d'émission de lumière et sont placées entre les deux électrodes. L'intensité du pic maximal du spectre déterminé par spectrométrie de masse d'au moins une couche dudit composé organique, et l'intensité des pics inférieurs, sont conformes à un rapport spécifique. L'invention concerne également un procédé de fabrication de ce dispositif, ainsi qu'un film EL organique.

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