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:
Apr. 02, 2019
Filed:
Sep. 18, 2013
Udc Ireland Limited, Dublin, IE;
Annemarie Wolleb, Fehren, CH;
Thomas Schaefer, Liestal, CH;
Heinz Wolleb, Fehren, CH;
Ute Heinemeyer, Neustadt, DE;
Nicolle Langer, Lampertheim, DE;
Christian Lennartz, Schifferstadt, DE;
Gerhard Wagenblast, Wachenheim, DE;
Soichi Watanabe, Seoul, KR;
Flavio Luiz Benedito, Ludwigshafen, DE;
Heinz Hottinger, Ettingen, CH;
Oliver Dosenbach, Bad Bellingen, DE;
UDC Ireland Limited, Dublin, IE;
Abstract
The present invention relates to compounds of formula (I), which are characterized in that they substituted by benzimidazo[1,2-a]benzimidazo-5-yl and/or benzimidazo[1,2-a]benzimidazo-2,5-ylene groups and in that at least one of the substituents B, B, B, B, B, B, Band Brepresents N; a process for their production and their use in electronic devices, especially electroluminescent devices. When used as host material for phosphorescent emitters in electroluminescent devices, the compounds of formula I may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices.