logo

For the Inventor, By the Inventor

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 12740231 B1

PDFFull Text
Date of Patent:
Sep. 15, 2026

Filed:

Jan. 19, 2022

Display device

Applicant:

Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;

Inventors:

Shunpei Yamazaki, Setagaya, JP;

Satoshi Seo, Sagamihara, JP;

Kenichi Okazaki, Atsugi, JP;

Assignee:

Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;

Attorneys:

Eric J. Robinson

Robinson Intellectual Property Law Office, P.C.

Primary Examiner:

Christopher M Raabe

Int. Cl.
CPC ...
H10K 50/19 (2023.01); H10K 59/121 (2023.01); H10K 59/131 (2023.01); H10K 59/32 (2023.01); H10K 59/35 (2023.01); H10K 59/80 (2023.01);
U.S. Cl.
CPC ...
H10K 50/19 (2023.02); H10K 59/121 (2023.02); H10K 59/131 (2023.02); H10K 59/32 (2023.02); H10K 59/35 (2023.02); H10K 59/871 (2023.02); H10K 59/8722 (2023.02); H10K 59/8731 (2023.02);
Abstract

A high-resolution display device is provided. A display device having both high display quality and high resolution is provided. The display device includes a plurality of first light-emitting elements and a plurality of second light-emitting elements. The first light-emitting element comprises a first pixel electrode, a first EL layer, a common layer, and a common electrode. The second light-emitting element comprises a second pixel electrode, a second EL layer, the common layer, and the common electrode. The first EL layer and the second EL layer are provided to be apart from each other, and a side surface of the first EL layer and a side surface of the second EL layer are provided to face each other. A first light-emitting unit, a first intermediate layer, and a second light-emitting unit are stacked in the first EL layer. A third light-emitting unit, a second intermediate layer, and a fourth light-emitting unit are stacked in the second EL layer. The first light-emitting unit and the second light-emitting unit each comprise a first light-emitting layer emitting light of a first color, and the third light-emitting unit and the fourth light-emitting unit each comprise a second light-emitting layer emitting light of a second color different from the first color.

Find Patent Forward Citations

Loading…