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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 11737295 B1

PDFFull Text
Date of Patent:
Aug. 22, 2023

Filed:

Aug. 03, 2018

Electroluminescent element and display device

Applicant:

Sharp Kabushiki Kaisha, Sakai, JP;

Inventors:

Tadashi Kobashi, Sakai, JP;

Kenichi Yoshimura, Sakai, JP;

Masashi Kago, Sakai, JP;

Noboru Iwata, Sakai, JP;

Assignee:

SHARP KABUSHIKI KAISHA, Sakai, JP;

Attorney:

ScienBiziP, P.C.

Primary Examiner:

Anthony Ho

Int. Cl.
CPC ...
H01L 51/50 (2006.01); H10K 50/115 (2023.01); C09K 11/08 (2006.01); C09K 11/70 (2006.01); C09K 11/88 (2006.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/818 (2023.01); H10K 50/828 (2023.01); H10K 59/12 (2023.01); B82Y 20/00 (2011.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/115 (2023.02); C09K 11/0883 (2013.01); C09K 11/70 (2013.01); C09K 11/883 (2013.01); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/818 (2023.02); H10K 50/828 (2023.02); H10K 59/12 (2023.02); B82Y 20/00 (2013.01); H10K 2102/3026 (2023.02); H10K 2102/3035 (2023.02); H10K 2102/331 (2023.02); H10K 2102/351 (2023.02);
Abstract

An electroluminescent element according to an aspect of the disclosure includes: a pair of a cathode electrode and an anode electrode; a light-emitting layer provided between the cathode electrode and the anode electrode; an electron transport layer provided between the cathode electrode and the light-emitting layer; and a hole transport layer provided between the anode electrode and the light-emitting layer. The light-emitting layer includes ZnSe-based quantum dots including ZnSe and one of the electron transport layer and the hole transport layer is composed of ZnO particles having an average particle size of 3 nm or greater and 30 nm or less.

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