| US 7,491,450 B2 | ||
| Organic electroluminescent device | ||
| Keiji Okinaka, Kanagawa (Japan); Akihito Saitoh, Kanagawa (Japan); Koichi Suzuki, Kanagawa (Japan); Akihiro Senoo, Kanagawa (Japan); and Kazunori Ueno, Kanagawa (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Jun. 25, 2004, as Appl. No. 10/875,242. | ||
| Claims priority of application No. 2003-184262 (JP), filed on Jun. 27, 2003; and application No. 2004-149953 (JP), filed on May 20, 2004. | ||
| Prior Publication US 2004/0265632 A1, Dec. 30, 2004 | ||
| Int. Cl. H01L 51/50 (2006.01) | ||
| U.S. Cl. 428—690 [428/917; 313/504; 313/506] | 3 Claims |
| 1. An organic electroluminescent device comprising:
a pair of electrodes consisting of an anode and a cathode; and
one or more organic-compound-containing layers sandwiched between the pair of electrodes, wherein
among the organic-compound-containing layers, at least one layer having a light-emitting region contains a first compound
represented by the following general formula [1] and a second compound having a band gap larger than a band gap of the first
compound:
 where each substituent Ar represents one selected independently from the following units [2] to [4]
 Y1 and Y2 each represent one selected independently from the group consisting of substituted or unsubstituted alkyl group, substituted
or unsubstituted aralkyl group, substituted or unsubstituted aryl group, and substituted or unsubstituted heterocyclic group,
wherein Y1 and Y2 may be identical with or different from each other, wherein Y1 and Y2 may be linked together to form a ring, wherein Y1 on different substituents Ar representing unit [2] (if two substituents Ar represent unit [2]) may be identical with or different
from each other, wherein Y2 on different substituents Ar representing unit [2] (if two substituents Ar represent unit [2]) may be identical with or different
from each other;
X1 represents one selected from the group consisting of a hydrogen atom, a heavy hydrogen atom, a halogen atom, substituted or
unsubstituted alkyl group, substituted or unsubstituted alkenyl group, substituted or unsubstituted alkynyl group, substituted
or unsubstituted aralkyl group, substituted or unsubstituted alkoxy group, substituted or unsubstituted sulfide group, substituted
or unsubstituted aryl group, substituted or unsubstituted heterocyclic group, substituted silyl group, and substituted boranyl
group, wherein X1 on different substituents Ar representing unit [3] (if two substituents Ar represent unit [3]) may be identical with or different
from each other;
each R1 represents one selected independently from the group consisting of a hydrogen atom, a heavy hydrogen atom, a halogen atom,
substituted or unsubstituted alkyl group, substituted or unsubstituted aryl group, substituted or unsubstituted alkoxy group,
and substituted or unsubstituted amino group, wherein R1 on different positions of a substituent Ar representing unit [2] may be identical with or different from each other, wherein
R1 on different substituents Ar representing unit [2] (if two substituents Ar represent unit [2]) may be identical with or different
from each other;
each R2 represents one selected independently from the group consisting of a hydrogen atom, a heavy hydrogen atom, a halogen atom,
substituted or unsubstituted alkyl group, substituted or unsubstituted aryl group, substituted or unsubstituted alkoxy group,
and substituted or unsubstituted amino group, wherein R2 on different positions of a substituent Ar representing unit [3] may be identical with or different from each other, wherein
R2 on different substituents Ar representing unit [3] (if two substituents Ar represent unit [3]) may be identical with or different
from each other;
R3 represents one selected from the group consisting of a hydrogen atom, a heavy hydrogen atom, a halogen atom, substituted or
unsubstituted alkyl group, and substituted or unsubstituted alkoxy group; and
one or two substituents Ar represent unit [2], provided that if one substituent Ar represents unit [2], the other two substituents
Ar both represent unit [3], and if two substituents Ar represent unit [2], the other one substitutent Ar represents unit [3]
or unit [4].
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