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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 12777842 B1

PDFFull Text
Date of Patent:
Oct. 27, 2026

Filed:

Dec. 12, 2022

Light emitting device and light emitting display including the same

Applicant:

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

Inventors:

Wook Song, Paju-si, KR;

Min Hyeong Hwang, Paju-si, KR;

Myeong Seon Cho, Paju-si, KR;

Chun Ki Kim, Paju-si, KR;

Sae Mi Park, Paju-si, KR;

Young Jun Yu, Paju-si, KR;

Jung Keun Kim, Paju-si, KR;

Byung Soo Kim, Paju-si, KR;

Sang Beom Kim, Paju-si, KR;

Assignee:

LG DISPLAY CO., LTD., Seoul, KR;

Attorney:

Morgan, Lewis & Bockius LLP

Primary Examiner:

Geraldina Visconti

Int. Cl.
CPC ...
H10K 85/60 (2023.01); H10K 59/35 (2023.01); H10K 50/16 (2023.01); H10K 50/18 (2023.01); H10K 59/12 (2023.01);
U.S. Cl.
CPC ...
H10K 85/654 (2023.02); H10K 59/35 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/6572 (2023.02); H10K 50/16 (2023.02); H10K 50/18 (2023.02); H10K 59/12 (2023.02); H10K 85/624 (2023.02); H10K 85/6574 (2023.02);
Abstract

A light emitting device and a light emitting display including the same. The light emitting device includes an anode and a cathode facing each other, a first stack and a second stack disposed between the anode and the cathode, the first stack including a first electron transport layer comprising a first material represented by Formula 1, a first blue light emitting layer containing a boron-based compound emitting light having a wavelength of 430 nm to 480 nm, and a first electron-blocking layer including a second material including a spirofluorene group, and at least one hydrogen atom on at least one side of the spirofluorene group is substituted by deuterium, and the second stack including at least two phosphorescent light emitting layers emitting light having a longer wavelength than that of the light emitted by the first blue light emitting layer, and a charge generation layer.

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Song, Wook. (2026). Light emitting device and light emitting display including the same (U.S. Patent No. 12777842). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12777842

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