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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 12077700 B1

PDFFull Text
Date of Patent:
Sep. 03, 2024

Filed:

Apr. 04, 2019

Top-emitting printed display with quantum dots and thermally activated delayed fluorescence molecules

Applicant:

Kyulux, Inc., Fukuoka, JP;

Inventors:

Stuart Stubbs, Manchester, GB;

Chris Brown, Natick, MA (US);

Assignee:

KYULUX, INC., Fukuoka, JP;

Attorney:

BROWDY AND NEIMARK, PLLC

Primary Examiner:

Nicole M Buie-Hatcher

Int. Cl.
CPC ...
C09K 11/02 (2006.01); C09K 11/06 (2006.01); C09K 11/08 (2006.01); C09K 11/70 (2006.01); H10K 50/11 (2023.01); H10K 50/115 (2023.01); H10K 50/15 (2023.01); H10K 50/18 (2023.01); H10K 85/60 (2023.01); H10K 102/00 (2023.01); H10K 50/818 (2023.01); H10K 50/828 (2023.01); H10K 50/852 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01); H10K 101/20 (2023.01);
U.S. Cl.
CPC ...
C09K 11/70 (2013.01); C09K 11/02 (2013.01); C09K 11/06 (2013.01); C09K 11/0883 (2013.01); H10K 85/6572 (2023.02); C09K 2211/1007 (2013.01); C09K 2211/1018 (2013.01); H10K 50/11 (2023.02); H10K 50/115 (2023.02); H10K 50/15 (2023.02); H10K 50/18 (2023.02); H10K 50/818 (2023.02); H10K 50/828 (2023.02); H10K 50/852 (2023.02); H10K 2101/10 (2023.02); H10K 2101/20 (2023.02); H10K 2101/90 (2023.02); H10K 2102/3026 (2023.02); H10K 2102/351 (2023.02);
Abstract

An emissive layer of a top-emitting (TE) printed display comprises a combination of solution-processable nanocrystal quantum dots, thermally activated delayed fluorescent molecules, and a suitable host material along with both electron and hole charge transport materials sandwiched into a microcavity between a reflective bottom electrode and a transparent or semi-transparent top electrode. The electrodes may be reflective metals and the thickness of the emissive layers and charge transport layers may be tuned according to the required resonant wavelength along with the thickness of the top semi-transparent electrode to optimize the resonant condition and maximize the light output.

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