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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 12193253 B1

PDFFull Text
Date of Patent:
Jan. 07, 2025

Filed:

Jan. 13, 2022

Light emitting device and display apparatus including the same

Applicant:

Samsung Display Co., Ltd., Yongin-si, KR;

Inventors:

Jimyoung Ye, Suwon-si, KR;

Seulong Kim, Cheonan-si, KR;

Hyekyun Lee, Seoul, KR;

Hajin Song, Hwaseong-si, KR;

Jihwan Yoon, Yongin-si, KR;

Dongseob Jeong, Suwon-si, KR;

Jaehoon Hwang, Seoul, KR;

Assignee:

Samsung Display Co., Ltd., Yongin-si, KR;

Attorney:

Lewis Roca Rothgerber Christie LLP

Primary Examiner:

Yu-Hsi D Sun

Int. Cl.
CPC ...
H10K 50/13 (2023.01); H10K 50/11 (2023.01); H10K 50/19 (2023.01); H10K 59/122 (2023.01); H10K 59/38 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01);
U.S. Cl.
CPC ...
H10K 50/131 (2023.02); H10K 50/11 (2023.02); H10K 50/19 (2023.02); H10K 59/122 (2023.02); H10K 59/38 (2023.02); H10K 2101/10 (2023.02); H10K 2101/90 (2023.02);
Abstract

A light emitting devices includes a first electrode, a hole transport region on the first electrode, a first emission layer on the hole transport region, the first emission layer to emit light of a first wavelength, a second emission layer on the hole transport region and to emit light of a second wavelength, an electron transport region on the first and second emission layers, and a second electrode on the electron transport region. The first emission layer includes a first sub-emission layer including a first hole transport host and a first sub-dopant to emit the light of the first wavelength, and a second sub-emission layer including a first electron transport and a second sub-dopant to emit the light of the first wavelength. The second emission layer includes a second hole transport host, a second electron transport host, and a second dopant to emit the light of the second wavelength.

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