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:
Jan. 24, 2023
Filed:
Nov. 08, 2017
Udc Ireland Limited, Dublin, IE;
Koji Takaku, Kanagawa, JP;
Yasunori Yonekuta, Kanagawa, JP;
Wataru Sotoyama, Kanagawa, JP;
Katsuyuki Youfu, Kanagawa, JP;
Yuki Hirai, Kanagawa, JP;
Tetsu Kitamura, Kanagawa, JP;
Toru Watanabe, Kanagawa, JP;
Tianhua Ouyang, Kanagawa, JP;
UDC IRELAND LIMITED, Dublin, IE;
Abstract
The disclosure relates to organic electroluminescent elements, compounds for use in the elements, and devices using the elements, which include a compound represented by the following General Formula (1): where Rto Rand Rto Reach independently represents a hydrogen atom, which may be a deuterium atom, or a substituent with a Hammett substituent constant σvalue of −0.15 or more, R, Rand Reach independently represents a hydrogen atom or a substituent, Lrepresents a divalent linking group, DGrepresents a donor group, and n1 represents 1 or 2, and where Rto R, Rto R, L, and DGare not bound to each other to form a ring.