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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 12317670 B1

PDFFull Text
Date of Patent:
May. 27, 2025

Filed:

Apr. 14, 2020

Display device

Applicant:

Sharp Kabushiki Kaisha, Sakai, JP;

Inventor:

Yusuke Sakakibara, Sakai, JP;

Assignee:

SHARP KABUSHIKI KAISHA, Sakai, JP;

Attorney:

ScienBiziP, P.C.

Primary Examiner:

Omar F Mojaddedi

Int. Cl.
CPC ...
H10K 50/15 (2023.01); G09F 9/00 (2006.01); G09F 9/30 (2006.01); G09G 3/20 (2006.01); H10K 50/16 (2023.01); H10K 59/80 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 2102/331 (2023.02);
Abstract

A display device including a light-emitting element including a first electrode, a second electrode, a light-emitting layer, a first charge transport layer having a function of transporting first charge, and a second charge transport layer having a function of transporting second charge, in which the display device includes a first inspection element including a fourth electrode and a third electrode. The first inspection element is a single-charge element including the light-emitting layer and the first charge transport layer that are common to the light-emitting element and making mainly the first charge flow, and the light-emitting element is driven in accordance with characteristics of the first inspection element.

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