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 12677535 B1

Date of Patent:

Jul. 07, 2026

Filed:

Mar. 01, 2022

Method for fabricating display device including a plurality of electroluminescence (el) layers with organic el material

Applicant:

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

Inventors:

Shingo Eguchi, Atsugi, JP;

Hideki Uochi, Atsugi, JP;

Assignee:

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

Attorneys:

Eric J. Robinson

Robinson Intellectual Property Law Office, P.C.

Primary Examiner:

Changhyun Yi

Int. Cl.

CPC ...

H10K 59/12 (2023.01); H10K 71/16 (2023.01); H10K 71/60 (2023.01);

U.S. Cl.

CPC ...

H10K 59/1201 (2023.02); H10K 71/166 (2023.02); H10K 71/60 (2023.02);

Abstract

A method for fabricating a novel display device is provided. The method for fabricating the display device includes a step of forming an anode, a first EL layer, a first cathode, and a first layer in this order; a step of forming a first resist mask over the first layer; a step of selectively removing parts of the anode, the first EL layer, the first cathode, and the first layer; a step of removing part of the first resist mask; a step of selectively removing other parts of the first EL layer, the first cathode, and the first layer; and a step of removing the first resist mask. The first resist mask is formed using a multi-tone mask.

Find Patent Forward Citations

Eguchi, Shingo. (2026). Method for fabricating display device including a plurality of electroluminescence (el) layers with organic el material (U.S. Patent No. 12677535). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12677535

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