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:
Jun. 01, 2021
Filed:
Aug. 28, 2017
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;
Takeyoshi Watabe, Kanagawa, JP;
Satomi Watabe, Kanagawa, JP;
Hideko Yoshizumi, Kanagawa, JP;
Tomoka Hara, Kanagawa, JP;
Yui Yamada, Kanagawa, JP;
Takahiro Ishisone, Kanagawa, JP;
Hiromitsu Kido, Kanagawa, JP;
Kunihiko Suzuki, Kanagawa, JP;
Satoshi Seo, Kanagawa, JP;
Abstract
In a light-emitting element, a layer including an organic compound includes a light-emitting layer; the light-emitting layer includes a tris iridium complex; and on the assumption that there is a rectangle which covers the iridium complex and in which at least one atom of the iridium complex is located over each of four sides when the iridium complex is two-dimensionally seen from a direction of a C3 symmetry axis of the iridium complex, A×B/Cis greater than or equal to 2.5, where A represents a maximum length of a long side of the rectangle, B represents a length of a short side of the rectangle when the length of the long side of the rectangle is A, and C represents a width in the direction of the C3 symmetry axis when the iridium complex is two-dimensionally seen from a normal direction of the C3 symmetry axis.