Organic EL element, method for fabricating the same and organic EL display device
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United States of America Patent
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Issued Date -
Aug 17, 2006
app pub date -
Jan 27, 2006
filing date -
Jan 27, 2005
priority date (Note) -
Abandoned
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Abstract
An organic EL element is provided which is capable of restraining chrominance non-uniformity caused by a film thickness distribution of an applied film, of having good display quality, of reducing the driving voltage, and of having interlayer short-circuit endurance. The organic EL element according to one mode of the present invention comprises an anode 11, a cathode 12, and an organic EL layer 13. The organic EL layer comprises a hole injection layer 131 and a hole transport layer 132. The hole injection layer includes organic-thin-film-forming-molecules and dopants oxidizing the organic-thin-film-forming-molecules, the dopants having a reduction potential of 0.5 to 0.85 V with respect to a standard hydrogen electrode, and the hole transport layer having an ionization potential of 8.5.times.10.sup.-19 J (5.3 eV) or below.
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