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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 12628422 B1

PDFFull Text
Date of Patent:
May. 12, 2026

Filed:

Jan. 05, 2022

Display device and method for fabricating display device

Applicant:

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

Inventors:

Shunpei Yamazaki, Setagaya, JP;

Takayuki Ikeda, Atsugi, JP;

Kenichi Okazaki, Atsugi, JP;

Yasumasa Yamane, Atsugi, JP;

Hajime Kimura, Atsugi, JP;

Tatsuya Onuki, Atsugi, JP;

Assignee:

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

Attorneys:

Eric J. Robinson

Robinson Intellectual Property Law Office, P.C.

Primary Examiner:

Anne M Hines

Assistant Examiner:

Jose M Diaz

Int. Cl.
CPC ...
H10D 86/40 (2025.01); H10K 50/10 (2023.01); H10K 50/17 (2023.01); H10K 59/131 (2023.01); H10K 59/80 (2023.01); H10K 71/16 (2023.01); H10K 71/60 (2023.01);
U.S. Cl.
CPC ...
H10D 86/481 (2025.01); H10K 50/171 (2023.02); H10K 59/131 (2023.02); H10K 71/166 (2023.02); H10K 71/60 (2023.02); H10K 50/10 (2023.02); H10K 59/8731 (2023.02);
Abstract

A high-resolution display device and a fabrication method thereof are provided. The display device includes a first insulating layer; a light-emitting element and a first conductive layer over the first insulating layer; a first layer over the first conductive layer; a second conductive layer over the first layer; a second insulating layer over the light-emitting element, the second conductive layer, and the first insulating layer; and a third conductive layer over the second insulating layer. The light-emitting element includes a fourth conductive layer, a second layer over the fourth conductive layer, a third layer over the second layer, and a fifth conductive layer over the third layer. The third conductive layer includes a region in contact with the second conductive layer through a first opening formed in the second insulating layer and a region in contact with the fifth conductive layer through a second opening formed in the second insulating layer; the second layer contains a light-emitting compound; the first conductive layer and the fourth conductive layer contain the same material; the first layer and the third layer contain the same material; and the second conductive layer and the fifth conductive layer contain the same material.

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