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:
Nov. 17, 2015
Filed:
Nov. 20, 2012
Universal Display Corporation, Ewing, NJ (US);
Raymond Kwong, Shatin, HK;
Chuanjun Xia, Lawrenceville, NJ (US);
Jason Brooks, Philadelphia, PA (US);
Siu Tung Lam, Apleichau, HK;
Chi Hang Lee, Chaiwan, HK;
UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US);
Abstract
Novel devices containing organic compounds containing electron donor and acceptor characteristics and that act as emissive dopants are provided. The energy ratio obtained by dividing the T1 energy of the emissive dopant by ΔEfor the same emissive dopant is at least 0.7 and the first emissive dopant has an energy difference calculated by subtracting the T1 energy of the first emissive dopant from ΔEfor the first emissive dopant and the energy difference is at smaller than or equal to 1.00 eV for the novel compounds. The compounds exhibit delayed fluorescence properties when incorporated into OLED devices.