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 11839145 B1

PDFFull Text
Date of Patent:
Dec. 05, 2023

Filed:

Jul. 07, 2020

Organic light emitting diode

Applicant:

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

Inventors:

Jimyoung Ye, Suwon-si, KR;

Hyomin Ko, Suwon-si, KR;

Assignee:

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

Attorney:

H.C. Park & Associates, PLC

Primary Examiner:

Anthony Ho

Int. Cl.
CPC ...
H01L 51/50 (2006.01); H10K 85/60 (2023.01); C09K 11/06 (2006.01); C07D 209/86 (2006.01); C07D 401/12 (2006.01); C07D 409/14 (2006.01); C07C 211/06 (2006.01); H10K 50/155 (2023.01); H10K 50/15 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 85/615 (2023.02); C07C 211/06 (2013.01); C07D 209/86 (2013.01); C07D 401/12 (2013.01); C07D 409/14 (2013.01); C09K 11/06 (2013.01); H10K 85/626 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/6572 (2023.02); C07C 2603/18 (2017.05); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1018 (2013.01); H10K 50/155 (2023.02); H10K 50/156 (2023.02); H10K 85/624 (2023.02); H10K 85/654 (2023.02); H10K 85/655 (2023.02); H10K 2102/351 (2023.02);
Abstract

An organic light emitting diode includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region. The hole transport region includes a first hole transport layer which is directly disposed on the lower portion of the emission layer and has a first refractive index, and a second hole transport layer which is disposed on the lower portion of the first hole transport layer and has a second refractive index, thereby exhibiting an improved luminous efficiency characteristic.

Find Patent Forward Citations

Loading…