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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 12274112 B1

PDFFull Text
Date of Patent:
Apr. 08, 2025

Filed:

Apr. 04, 2023

Electroluminescent display device

Applicant:

Lg Display Co., Ltd., Seoul, KR;

Inventors:

TaeHan Park, Paju-si, KR;

JongSung Kim, Paju-si, KR;

Howon Choi, Paju-si, KR;

Dongyoung Kim, Paju-si, KR;

Assignee:

LG Display Co., Ltd., Seoul, KR;

Attorney:

SEED IP LAW GROUP LLP

Primary Examiner:

Shaun M Campbell

Assistant Examiner:

Aneta B Cieslewicz

Int. Cl.
CPC ...
H10K 50/125 (2023.01); H10K 50/11 (2023.01); H10K 50/14 (2023.01); H10K 50/15 (2023.01); H10K 50/155 (2023.01); H10K 50/19 (2023.01); H10K 50/858 (2023.01); H10K 59/12 (2023.01); H10K 59/122 (2023.01); H10K 59/32 (2023.01); H10K 59/35 (2023.01); H10K 59/38 (2023.01);
U.S. Cl.
CPC ...
H10K 50/125 (2023.02); H10K 50/11 (2023.02); H10K 50/15 (2023.02); H10K 50/19 (2023.02); H10K 50/858 (2023.02); H10K 59/122 (2023.02); H10K 59/32 (2023.02); H10K 59/35 (2023.02); H10K 59/353 (2023.02); H10K 50/14 (2023.02); H10K 50/155 (2023.02); H10K 59/12 (2023.02); H10K 59/38 (2023.02);
Abstract

An electroluminescent display device is disclosed. The electroluminescent display device includes a substrate having thereon a first sub pixel and a second sub pixel, a first electrode in each of the first sub pixel and the second sub pixel on the substrate, an organic layer with P-type polarity or N-type polarity on the first electrode, and a second electrode on the organic layer. The organic layer provided in the first sub pixel and the organic layer provided in the second sub pixel are spaced apart from each other with a doping layer provided in the boundary area between the first sub pixel and the second sub pixel. The doping layer is doped with dopant whose polarity is opposite to that of the organic layer.

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