Patent · US Expired

Materials for electroluminescent devices

US7157155B2 · kind B2 · utility

2Cited by

7References

19Claims

0Family size

Assignee

University of Hong Kong · CN

Inventors

Chi-Ming Che · Hong Kong, CN
Iona Hiu Tung Sham · Hong Kong, CN

Key dates

Filing date	Jan 9, 2004
Grant date	Jan 2, 2007
Priority date	—
Expiry date	Jan 5, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S428/917
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Materials containing one or more borazine rings are employed as materials for electroluminescent devices. The compounds have molecular structures represented by the following formula:in which R1–R6 are independently a metal; a whole or part of an optionally substituted borazine ring; hydrogen; halogen; hydroxyl; optionally substituted alkyl, cycloalkyl, aryl, acyl, alkoxy, acyloxy, amino, acylamino, aralkyl, cyano, carboxyl, thio, vinyl, styryl, aminocarbonyl, carbamoyl, aryloxycarbonyl, phenoxycarbonyl, or alkoxycarbonyl, as well as recognized donor and acceptor groups. The compounds have high thermal stability as well as hole and electron mobilities.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.