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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 11856809 B1

PDFFull Text
Date of Patent:
Dec. 26, 2023

Filed:

Jan. 31, 2020

Method of screening for electron transport material and hole blocking material used in organic light emitting device

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Ji Hye Kim, Daejeon, KR;

Sung Kil Hong, Daejeon, KR;

Minseung Chun, Daejeon, KR;

Yeon Hwan Kim, Daejeon, KR;

Jae Tak Lee, Daejeon, KR;

Assignee:

LG CHEM, LTD., Seoul, KR;

Attorney:

Bryan Cave Leighton Paisner LLP

Primary Examiner:

Joseph C Nicely

Int. Cl.
CPC ...
H10K 50/16 (2023.01); H10K 71/70 (2023.01); H10K 71/00 (2023.01); H10K 85/60 (2023.01); H10K 50/18 (2023.01); H10K 101/50 (2023.01);
U.S. Cl.
CPC ...
H10K 50/16 (2023.02); H10K 71/00 (2023.02); H10K 71/70 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/654 (2023.02); H10K 85/6574 (2023.02); H10K 50/18 (2023.02); H10K 85/615 (2023.02); H10K 85/6572 (2023.02); H10K 2101/50 (2023.02);
Abstract

A method of screening for an electron transport material included in an electron transport layer of an organic light emitting device and a method of screening for a hole blocking material included in a hole blocking layer of the organic light emitting device, the method using a heterogeneous electron transfer rate constant (K) value to select the electron transport material and an electron donating rate constant kto select the hole blocking material, thereby capable of realizing the organic light emitting device having an excellent balance between luminous efficiency and lifetime.

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