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.:
Date of Patent:
Dec. 09, 2025
Filed:
Aug. 19, 2020
Applicant:
Sharp Kabushiki Kaisha, Sakai, JP;
Inventors:
Bai Zhang, Sakai, JP;
Koji Yasukawa, Sakai, JP;
Tokiyoshi Umeda, Sakai, JP;
Naoki Uetake, Sakai, JP;
Assignee:
SHARP KABUSHIKI KAISHA, Sakai, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10K 50/15 (2023.01); H10K 59/12 (2023.01); H10K 50/16 (2023.01); H10K 50/18 (2023.01); H10K 59/35 (2023.01);
U.S. Cl.
CPC ...
H10K 50/15 (2023.02); H10K 59/1201 (2023.02); H10K 50/16 (2023.02); H10K 50/181 (2023.02); H10K 59/12 (2023.02); H10K 59/35 (2023.02);
Abstract
A display device includes a hole transport layer common to a plurality of light-emitting elements between a light-emitting layer and an anode electrode below thereof in the light-emitting element in each pixel. The hole transport layer includes a hole transport section that transports positive holes to the light-emitting layer, and an adjacent pixel hole blocking section that is formed in a portion between the light-emitting elements in adjacent pixels and blocks transportation of positive holes between the light-emitting elements in adjacent pixels.