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 12696613 B1

Date of Patent:

Jul. 28, 2026

Filed:

Aug. 06, 2021

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

Applicant:

Sharp Kabushiki Kaisha, Sakai City, JP;

Inventor:

Yuma Yaguchi, Sakai City, JP;

Assignee:

SHARP KABUSHIKI KAISHA, Sakai City, JP;

Attorney:

ScienBiziP, P.C.

Primary Examiner:

S M Sohel Imtiaz

Int. Cl.

CPC ...

H10K 50/11 (2023.01); H10K 50/115 (2023.01); H10K 50/155 (2023.01); H10K 50/165 (2023.01); H10K 59/35 (2023.01); H10K 85/10 (2023.01); H10K 59/12 (2023.01);

U.S. Cl.

CPC ...

H10K 50/115 (2023.02); H10K 50/155 (2023.02); H10K 50/165 (2023.02); H10K 59/35 (2023.02); H10K 85/151 (2023.02); H10K 59/1201 (2023.02);

Abstract

A red light-emitting element according to the present disclosure includes a pixel electrode, a red light-emitting layer, and a common electrode in the stated order. The red light-emitting layer includes the following: a first red function region including red nanoparticles and first red ligands; and a second red function region including red nanoparticles and second red ligands different from the first red ligands, and being adjacent to at least a part of the side surface of the first red function region. The volume resistivity of the second red function region is higher than the volume resistivity of the first red function region.

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