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:
Dec. 16, 2014
Filed:
Sep. 20, 2007
Masakazu Egawa, Tochigi, JP;
Masakazu Egawa, Tochigi, JP;
Abstract
The present invention provides a novel organic compound having excellent heat resistance. By using the novel organic compound, a light-emitting element and a light-emitting device which have excellent heat resistance can be provided. A stilbene derivative expressed by the general formula (1) is provided. Since the stilbene derivative expressed by the general formula (1) has high glass transition point, when it is used for a light-emitting element, the light-emitting element, and a light-emitting device using the light-emitting element which have excellent heat resistance can be obtained. Further, since the stilbene derivative expressed by the general formula (1) has good light emission efficiency; therefore, when it is used for a light emitting element, a light emitting element and a light emitting device which consumes less power can be obtained.