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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 12207551 B1

PDFFull Text
Date of Patent:
Jan. 21, 2025

Filed:

May. 10, 2022

Band edge emission enhanced organic light emitting diode utilizing chiral liquid crystalline emitter

Applicant:

Red Bank Technologies Llc, Red Bank, NJ (US);

Inventors:

Gene C. Koch, Corvallis, OR (US);

John N. Magno, St. James, NY (US);

Assignee:

Red Bank Technologies LLC, Red Bank, NJ (US);

Attorney:

Kolisch Hartwell, P.C.

Primary Examiner:

Syed I Gheyas

Int. Cl.
CPC ...
H10K 85/00 (2023.01); C09K 19/34 (2006.01); C09K 19/38 (2006.01); C09K 19/54 (2006.01); C09K 19/58 (2006.01); G02F 1/1334 (2006.01); H10K 50/11 (2023.01); H10K 50/84 (2023.01); H10K 71/00 (2023.01); C09K 19/04 (2006.01); G02F 1/137 (2006.01); H10K 50/858 (2023.01); H10K 85/10 (2023.01);
U.S. Cl.
CPC ...
H10K 85/731 (2023.02); C09K 19/3477 (2013.01); C09K 19/3491 (2013.01); C09K 19/3857 (2013.01); C09K 19/3861 (2013.01); C09K 19/544 (2013.01); C09K 19/586 (2013.01); G02F 1/1334 (2013.01); H10K 50/11 (2023.02); H10K 50/84 (2023.02); H10K 71/00 (2023.02); C09K 2019/0437 (2013.01); C09K 2019/0448 (2013.01); G02F 1/13756 (2021.01); H10K 50/858 (2023.02); H10K 85/10 (2023.02);
Abstract

Disclosed herein is a light emitting device and method of manufacturing such a device comprised of a series of photopolymerizable, chiral liquid crystalline layers that can be solvent cast on a substrate. The mixture of chiral materials in each successive layer may be blended in such a way that each layer has the same chiral pitch. Further the chiral materials in each layer may also be blended so that the ordinary and extraordinary refractive indices in each layer match the other layers such that the complete assembly of layers will optically function as a single relatively thick layer of chiral liquid crystal. The chiral nematic material in each layer can spontaneously adopt a helical structure with a helical pitch. The light emitting layers of the light emitting device can further comprise electroluminescent material that emits light into the band edge light propagation modes of the photonic crystal.

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