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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 12402492 B1

PDFFull Text
Date of Patent:
Aug. 26, 2025

Filed:

Oct. 07, 2023

Organic electroluminescent device including thin film encapsulation structure and method for producing same

Applicant:

Sakai Display Products Corporation, Sakai, JP;

Inventors:

Katsuhiko Kishimoto, Sakai, JP;

Yozo Narutaki, Sakai, JP;

Assignee:

SAKAI DISPLAY PRODUCTS CORPORATION, Sakai, JP;

Attorney:

ScienBiziP, P.C.

Primary Examiner:

Eric W Jones

Int. Cl.
CPC ...
H10K 50/844 (2023.01); H10K 59/121 (2023.01); H10K 59/124 (2023.01); H10K 59/131 (2023.01); H10K 59/80 (2023.01); H10K 71/00 (2023.01);
U.S. Cl.
CPC ...
H10K 59/124 (2023.02); H10K 50/844 (2023.02); H10K 59/1213 (2023.02); H10K 59/873 (2023.02); H10K 71/00 (2023.02); H10K 59/131 (2023.02);
Abstract

An organic EL device has a substrate, a drive circuit layer, a first inorganic protective layer, an organic planarizing layer, an organic EL element layer, and a TFE structure including a first inorganic barrier layer. When viewed from a normal line of the substrate, the organic planarizing layer is formed within a region where the first inorganic protective layer is formed, while an organic EL element is disposed within a region where the organic planarizing layer is formed. In a portion where the first inorganic protective layer and the first inorganic barrier layer are in direct contact with each other on a lead-out line of the drive circuit layer, the first inorganic barrier layer includes, in a cross-section parallel to a line width direction of the lead-out line, a lateral face having a taper angle of less than 90°.

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