The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2007
Filed:
Mar. 31, 2004
Zbyslaw R. Owczarczyk, Webster, NY (US);
Christopher T. Brown, Rochester, NY (US);
Viktor V. Jarikov, Rochester, NY (US);
Zbyslaw R. Owczarczyk, Webster, NY (US);
Christopher T. Brown, Rochester, NY (US);
Viktor V. Jarikov, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
An electroluminescent device comprises a light-emitting layer containing a host and a light-emitting material wherein the light-emitting material comprises a boron complex containing boron complexed by two ring nitrogens of a deprotonated bis(aromatic)amine or bis(aromatic)methene ligand wherein the boron complex contains a tertiary amine substituent group. The invention provides a material for a light-emitting layer of an EL device that exhibits improved luminance efficiency.