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. 05, 2016
Filed:
Nov. 08, 2013
Universal Display Corporation, Ewing, NJ (US);
Jui-Yi Tsai, Newtown, PA (US);
Chuanjun Xia, Lawrenceville, NJ (US);
Miguel A. Esteruelas, Zaragoza, ES;
Enrique Oñate Rodriguez, Zaragoza, ES;
Tamara Bolano, Zaragoza, ES;
Adrian U. Palacios, Zaragoza, ES;
UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US);
Abstract
A novel emitter compound having the formula Os(L)(L)(L) and a novel method of making such compounds are disclosed. In the formula Os(L)(L)(L), each of L, L, and Lis independently a bidentate ligand. The method includes (a) reacting a precursor of ligand Lwith an osmium precursor to form a first intermediate product that has the ligand Lcoordinated to the osmium, wherein the osmium precursor has the formula OsH(PR), wherein x is an integer from 2 to 6 and y is an integer from 2 to 5, and R is selected from the group consisting of aryl, alkyl and cycloalkyl; (b) reacting the first intermediate product with a reducing agent to form a Os(II) second intermediate product; (c) reacting the second intermediate product with a coordinating solvent to form a third intermediate product; and (d) reacting a mixture of ligands Land Lwith said third intermediate product.