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:
May. 17, 2022
Filed:
Aug. 02, 2019
Lg Display Co., Ltd., Seoul, KR;
Heejun Park, Paju-si, KR;
Seonkeun Yoo, Gunpo-si, KR;
Sangbeom Kim, Paju-si, KR;
Soyoung Jang, Seoul, KR;
Jicheol Shin, Seoul, KR;
LG DISPLAY CO., LTD., Seoul, KR;
Abstract
The present invention provides a novel compound of an amine derivative including a spiro compound. The novel compound has excellent hole transport characteristics. Thus, when the novel compound is applied to a hole transport layer, an auxiliary hole transport layer and an electron blocking layer of an organic light-emitting device, the device realizes low driving voltage, high efficiency, high thermal stability and long life-span. Further, when the novel compound is applied as a blue light-emitting material, the device realizes a low driving voltage and high efficiency.