Organic element for electroluminescent devices

Details Organic element for electroluminescent devices Organic element for electroluminescent devices

2006-12-12

2006-12-12

Garrett, Dawn (Department: 1774)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000, C257S098000, C257S102000, C257S103000

Reexamination Certificate

active

07147938

ABSTRACT:
An electroluminescent device includes a light-emitting layer containing a host material and:(a) a compound of Formula (1):in-line-formulae description="In-line Formulae" end="lead"?X1—Ar1—C(R1)═C(R2)—Ar2  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein:Ar1represents a divalent aromatic group;Ar2represents an aromatic group;X1represents at least one electron-donating group;R1and R2independently represent hydrogen or a substituent; and(b) a light-emitting boron complex having an absorption spectrum that overlaps with the emission spectrum of compound (1). The device serves to improve luminance efficiency while maintaining good color purity.

REFERENCES:
patent: 5536949 (1996-07-01), Hosokawa et al.
patent: 2003/0198829 (2003-10-01), Hoag et al.
patent: 2003/0201415 (2003-10-01), Hoag et al.
patent: 02/20694 (2002-03-01), None
M. J. Helber et al, “Organic Element for Electroluminescent Devices”, U.S. Appl. No. 10/769,492 (D-87137) filed Dec. 30, 2004.
M. J. Helber et al, “Organic Element for Electroluminescent Deives”, U.S. Appl. No. 10/768,289 (D-87138) filed Jan. 30, 2004.
M. J. Helber et al., “Organic Element for Electroluminescent Devices”, U.S. Appl. No. 10/768,776 (D-87483) filed Jan. 30, 2004.

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