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:
Jul. 11, 2023
Filed:
Sep. 24, 2020
Universal Display Corporation, Ewing, NJ (US);
Lichang Zeng, Lawrenceville, NJ (US);
Zhiqiang Ji, Ewing, NJ (US);
Eric A. Margulies, Ewing, NJ (US);
Paul M. Lahti, Pennington, NJ (US);
Michael S. Weaver, Ewing, NJ (US);
Universal Display Corporation, Ewing, NJ (US);
Abstract
A compound having the formula Ir(L)(L), having the structure Formula I, is disclosed. In Formula I, each of Z, Z, Z, and Zis CR; X is O, S, or Se; n is an integer from 1 to 3; R, R, R, R, and Reach independently represent mono- to a maximum possible number of substitutions, or no substitution; R, R, R, R, and Rare each independently selected from a variety of substituents; any two substitutions in R, R, R, R, and Rare optionally joined to form a ring; at least one pair of substitutions in R, R, R, R, and Rare joined together to form a bridge structure comprising a backbone structure that forms a fused first ring, which can be further substituted; and the backbone structure is saturated. Organic light emitting devices and consumer products containing the compounds are also disclosed.