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:
Oct. 05, 2021
Filed:
Feb. 27, 2020
Kwansei Gakuin Educational Foundation, Nishinomiya, JP;
SK Materials Jnc Co., Ltd., Gyeonggi-do, KR;
Takuji Hatakeyama, Hyogo, JP;
Yasuhiro Kondo, Chiba, JP;
Keiichi Nakamoto, Chiba, JP;
Motoki Yanai, Chiba, JP;
Kwansei Gakuin Educational Foundation, Hyogo, JP;
SK Materials JNC Co., Ltd., Gyeonggi-do, KR;
Abstract
The objective of the invention is to provide a polycyclic aromatic compound in which solubility to a solvent, film formability, wet coatability, thermal stability, and in-plane orientation are improved. This objective is achieved by a light emission layer-forming composition comprising: as a first component, at least one type of dopant material selected from the group consisting of polycyclic aromatic compounds represented by general formula (A) and polycyclic aromatic oligomer compounds including a plurality of structures represented by general formula (A); as a second component, a specific low-molecular-weight host material; and, as a third component, at least one type of organic solvent. In formula (A), ring A, ring B, and ring C each independently represent an aryl ring or a hetero aryl ring, Yis B, and Xand Xeach independently represent O or N—R wherein at least one of Xand Xis N—R.