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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 12495663 B1

PDFFull Text
Date of Patent:
Dec. 09, 2025

Filed:

Jul. 01, 2022

Flexible electroluminescent devices

Applicant:

Shoei Chemical Inc., Tokyo, JP;

Inventors:

Donald A. Zehnder, San Carlos, CA (US);

Dylan C. Hamilton, Oakland, CA (US);

Ruiqing Ma, Morristown, NJ (US);

Jesse R. Manders, Mountain View, CA (US);

Assignee:

SHOEI CHEMICAL INC., Tokyo, JP;

Attorney:

Alleman Hall & Tuttle LLP

Primary Examiner:

Maliheh Malek

Int. Cl.
CPC ...
H10K 77/10 (2023.01); H10H 20/811 (2025.01); H10H 20/812 (2025.01); H10H 20/84 (2025.01); H10K 50/115 (2023.01); H10K 50/125 (2023.01); H10K 50/844 (2023.01); H10K 102/00 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 59/35 (2023.01);
U.S. Cl.
CPC ...
H10K 50/115 (2023.02); H10K 50/125 (2023.02); H10K 50/844 (2023.02); H10H 20/811 (2025.01); H10H 20/812 (2025.01); H10H 20/84 (2025.01); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/171 (2023.02); H10K 59/35 (2023.02); H10K 77/111 (2023.02); H10K 2102/311 (2023.02);
Abstract

Embodiments of a flexible electroluminescent (EL) device are described. An EL device includes a device stack and a flexible substrate configured to support the device stack. The device stack can include a anode and a cathode, a quantum dot (QD) film positioned between the anode and the cathode and configured to produce light having a first peak wavelength. The device stack further includes a patterned insulating layer disposed on the anode and configured to form electrically active regions in the device stack and to control emission of the light from the EL device through the electrically active regions. The EL device further includes an encapsulation layer disposed on the cathode.

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