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. 24, 2017
Filed:
Feb. 23, 2015
Seiko Epson Corporation, Tokyo, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
Provided are a light emitting element with a high efficiency and a long life that emits light in a near-infrared region, and a light emitting device, authentication device and electronic device that include the light emitting element. A light emitting element () according to one aspect of the invention includes an anode (), a cathode (), and a light emitting layer () that is provided between the anode () and the cathode () and that emits light by conducting current between the anode () and the cathode (). The light emitting layer () includes a pyrromethene-based boron complex as a light emitting material and a tetracene-based material as a host material for retaining the light emitting material.