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 12733334 B1

Date of Patent:

Sep. 08, 2026

Filed:

Jul. 13, 2021

Light-emitting element, display device, and method for manufacturing light-emitting element

Applicant:

Sharp Kabushiki Kaisha, Sakai City, JP;

Inventors:

Kota Adachi, Sakai City, JP;

Yasushi Asaoka, Sakai City, JP;

Assignee:

SHARP KABUSHIKI KAISHA, Sakai City, JP;

Attorney:

ScienBiziP, P.C.

Primary Examiner:

Shahan Ur Rahaman

Int. Cl.

CPC ...

H10K 50/15 (2023.01); H10K 50/115 (2023.01); H10K 85/10 (2023.01); H10K 101/00 (2023.01); H10K 101/30 (2023.01);

U.S. Cl.

CPC ...

H10K 50/15 (2023.02); H10K 50/115 (2023.02); H10K 85/111 (2023.02); H10K 85/115 (2023.02); H10K 85/151 (2023.02); H10K 2101/30 (2023.02); H10K 2101/80 (2023.02);

Abstract

A light-emitting element includes: a first electrode; a second electrode; a light-emitting layer positioned between the first electrode and the second electrode, and containing quantum dots and a first hole transport material; and a hole transport layer positioned between the first electrode and the light emitting layer, and containing a second hole transport material solubility of which to a solvent in which the quantum dots are soluble is lower than solubility of the first hole transport material. A difference in ionization potential between the second hole transport material and the first hole transport material is smaller than a difference in ionization potential between the second hole transport material and the quantum dots.

Find Patent Forward Citations

Adachi, Kota. (2026). Light-emitting element, display device, and method for manufacturing light-emitting element (U.S. Patent No. 12733334). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12733334

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