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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.:

US 12035551 B1

PDFFull Text
Date of Patent:
Jul. 09, 2024

Filed:

Oct. 21, 2021

Three stack hybrid white oled for enhanced efficiency and lifetime

Applicant:

Universal Display Corporation, Ewing, NJ (US);

Inventors:

Michael Stuart Weaver, Princeton, NJ (US);

Julia J. Brown, Yardley, PA (US);

Assignee:

Universal Display Corporation, Ewing, NJ (US);

Attorney:

Butzel Long

Primary Examiner:

Ismail A Muse

Int. Cl.
CPC ...
H01L 29/08 (2006.01); H01L 35/24 (2006.01); H01L 51/00 (2006.01); H10K 50/13 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 50/18 (2023.01); H10K 50/80 (2023.01); H10K 50/85 (2023.01); H10K 59/32 (2023.01); H10K 50/11 (2023.01); H10K 50/19 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01);
U.S. Cl.
CPC ...
H10K 50/131 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/17 (2023.02); H10K 50/171 (2023.02); H10K 50/18 (2023.02); H10K 50/80 (2023.02); H10K 50/85 (2023.02); H10K 59/32 (2023.02); H10K 50/11 (2023.02); H10K 50/19 (2023.02); H10K 2101/10 (2023.02); H10K 2101/27 (2023.02);
Abstract

OLEDs containing a stacked hybrid architecture including a phosphorescent organic emissive unit and two fluorescent organic emissive units are disclosed. The stacked hybrid architecture includes a plurality of electrodes and a hybrid emissive stacked disposed between at least two of the electrodes. The stack contains at least three emissive units and at least two charge generation layers. At least one of the three emissive units is a phosphorescent organic emissive unit and at least two of the three emissive units are fluorescent organic emissive units. More specifically, the two fluorescent organic emissive units may be blue organic emissive units that emit light from the same or different color regions.

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