Organic electroluminescent element, material for positive...

Details Organic electroluminescent element, material for positive... Organic electroluminescent element, material for positive...

2007-07-31

2007-07-31

Garrett, Dawn L. (Department: 1774)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000

Reexamination Certificate

active

11192353

ABSTRACT:
The present invention relates to highly reliable organic EL elements that can provide higher luminance with lower voltage and exhibit lower leak current at negative biases and appropriate diode properties. The organic EL element comprises a positive hole injecting layer, and a perfluoropolyether compound is incorporated into the positive hole injecting layer. Preferably, the perfluoropolyether compound is expressed by formula (1) or (2),in-line-formulae description="In-line Formulae" end="lead"?R1—Rf—R2  formula (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?Rf—R3  formula (2)in-line-formulae description="In-line Formulae" end="tail"?in which, R1, R2, and R3represents one of a hydrogen atom, a fluorine atom, and a substituted group; Rf represents the perfluoropolyether skeleton expressed by the formula (3),in which, R4and R5represent general formula —CpF2p+1; n, m, x, and y are each an integer.

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JPO abstract and computer generated translation of JP 200-056980 published Feb. 2002.
C.W. Tang, et al., “Organic electroluminescent diodes”, Applied Physics Letters, vol. 51,913, Jun. 9, 1987.
C. W. Tang, et al., “Electroluminescence of doped organic thin films”, Journal of Applied Physics, vol. 65(9), pp. 3610-3616, May 10, 1989.

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