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:
Jun. 16, 2026
Filed:
Jan. 14, 2022
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Daiki Nakamura, Atsugi, JP;
Sho Kato, Isehara, JP;
Kenichi Okazaki, Atsugi, JP;
Shunpei Yamazaki, Tokyo, JP;
SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Kanagawa-ken, JP;
Abstract
A display device with both high display quality and high resolution is provided. The display device includes a light-emitting element and a connection portion. The connection portion is provided along an outer periphery of a display region where the light-emitting element is provided. The light-emitting element includes a pixel electrode, a first EL layer over the pixel electrode, a second EL layer over the first EL layer, and a common electrode over the second EL layer. The connection portion includes a connection electrode, a second EL layer over the connection electrode, and the common electrode over the second EL layer. The second EL layer includes a first region in contact with the connection electrode and a second region in contact with the common electrode. The area of a region where the first region and the second region overlap with each other in a top view is greater than or equal to 40000 square micrometers. The second EL layer includes a region where the film thickness is greater than or equal to 0.5 nm and less than or equal to 1.5 nm. The second EL layer contains a substance with a high electron-injection property.