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.:
Date of Patent:
Dec. 16, 2025
Filed:
Sep. 30, 2020
Lg Display Co., Ltd., Seoul, KR;
Rohm and Haas Electronic Materials Korea Ltd., Cheonan-si, KR;
Dohan Kim, Goyang-si, KR;
Hyeseung Kang, Seoul, KR;
Kyoung-Jin Park, Hwaseong-si, KR;
Ji-Song Jun, Hwaseong-si, KR;
Chi-Sik Kim, Hwaseong-si, KR;
LG DISPLAY CO., LTD., Seoul, KR;
ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD., Cheonan-si, KR;
Abstract
Disclosed herein is an organic light emitting diode device. The organic light emitting diode device includes an anode, a cathode and a light emitting layer. The light emitting layer has a structure where a blue light emitter and a red/green simultaneous light emitter are stacked. The red/green simultaneous light emitter has a structure where a red light emitter and a green light emitter are stacked. The red light emitter includes a red host compound, and in some embodiments, the red host compound includes a spirobisfluorene-based compound where an aryl amino group is substituted. The green light emitter includes a green host compound, and the green host compound includes a mixture of a first green host compound and a second green host compound. In some embodiments, the first green host compound includes a biscarbazole-based compound and the second green host compound includes an indolocarbazole-based compound.