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. 20, 2020
Filed:
Oct. 25, 2016
Sumitomo Chemical Company, Limited, Tokyo, JP;
Kohei Asada, Tsukuba, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A method for driving a light emitting device is provided. The light emitting device includes an anode, a cathode, a light emitting layer disposed between the anode and the cathode, and a hole transporting layer disposed between the anode and the light emitting layer. The hole transporting layer includes a cross-linked body of a crosslinkable material. According to the method, the light emitting device is driven by pulse voltage in which a first voltage not lower than the light emission start voltage of the light emitting device and a second voltage lower than the light emission start voltage of the light emitting device are alternately switched. A light emitting apparatus equipped with the light emitting device and a driving apparatus which drives the light emitting device by pulse voltage is also provided.