logo

For the Inventor, By the Inventor

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 12777844 B1

PDFFull Text
Date of Patent:
Oct. 27, 2026

Filed:

Dec. 09, 2022

Light emitting device and light emitting display device including the same

Applicant:

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

Inventors:

Wook Song, Paju-si, KR;

Sae Mi Park, Paju-si, KR;

Myeong Seon Cho, Paju-si, KR;

Min Hyeong Hwang, Paju-si, KR;

Chun Ki Kim, Paju-si, KR;

Jung Keun Kim, Paju-si, KR;

Byung Soo Kim, Paju-si, KR;

Young Jun Yu, Paju-si, KR;

Sang Beom Kim, Paju-si, KR;

Assignee:

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

Attorney:

Fenwick & West LLP

Primary Examiner:

Geraldina Visconti

Int. Cl.
CPC ...
H10K 85/60 (2023.01); C07C 211/61 (2006.01); C07D 235/08 (2006.01); C07D 235/18 (2006.01); C07D 401/14 (2006.01); C09K 11/06 (2006.01); H10K 50/13 (2023.01); H10K 50/11 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 50/18 (2023.01); H10K 50/19 (2023.01); H10K 59/12 (2023.01); H10K 101/10 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 85/6572 (2023.02); C07C 211/61 (2013.01); C07D 235/08 (2013.01); C07D 235/18 (2013.01); C07D 401/14 (2013.01); C09K 11/06 (2013.01); H10K 50/13 (2023.02); H10K 85/60 (2023.02); H10K 85/615 (2023.02); H10K 85/626 (2023.02); H10K 85/633 (2023.02); H10K 85/654 (2023.02); C07B 2200/05 (2013.01); C07C 2603/18 (2017.05); C07C 2603/97 (2017.05); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1018 (2013.01); H10K 50/11 (2023.02); H10K 50/16 (2023.02); H10K 50/171 (2023.02); H10K 50/18 (2023.02); H10K 50/19 (2023.02); H10K 59/12 (2023.02); H10K 85/624 (2023.02); H10K 2101/10 (2023.02); H10K 2102/351 (2023.02);
Abstract

A light emitting device and a light emitting display device that are capable of improving efficiency, driving voltage, and lifespan by varying the configuration of a layer adjacent to a blue light emitting layer in a blue fluorescent stack contacting a cathode are disclosed. The light emitting device includes stacks between an anode and a cathode, wherein an nstack contacting the cathode is a first blue stack that includes a first hole transport layer, a first electron-blocking layer, a first blue light emitting layer containing a boron-based dopant having an emission peak of 430 nm to 480 nm, a first electron transport layer contacting the first blue light emitting layer, and an electron injection layer having two sides contacting the first electron transport layer and the cathode, respectively, wherein the first electron transport layer contains a mixture of a first material and a second material.

Find Patent Forward Citations

Quick Actions:

Song, Wook. (2026). Light emitting device and light emitting display device including the same (U.S. Patent No. 12777844). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12777844

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…