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:
Feb. 23, 2021
Filed:
Feb. 07, 2020
Universal Display Corporation, Ewing, NJ (US);
Chuanjun Xia, Lawrenceville, NJ (US);
Jui-Yi Tsai, Newtown, PA (US);
Beatriz Eguillor Armendariz, Saragossa, ES;
Miguel A. Esteruelas Rodrigo, Saragossa, ES;
Roberto Gomez Alabau, Saragossa, ES;
Montserrat Olivan Esco, Saragossa, ES;
Enrique Onate Rodriguez, Saragossa, ES;
UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US);
Abstract
A method of making an osmium(II) complex having Formula I, L-Os-L, wherein Land Lare independently a biscarbene tridentate ligand, wherein Land Lcan be same or different is disclosed. The method includes (a) reacting a precursor of ligand Lwith an osmium precursor to form an intermediate product, wherein the osmium precursor having 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; and (b) reacting a precursor of ligand Lwith said intermediate product.