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. 08, 2015
Filed:
Nov. 15, 2011
Junya Tamaki, Chiba, JP;
Nobuhiko Sato, Mobara, JP;
Masami Iseki, Mobara, JP;
Kouji Ikeda, Chiba, JP;
Masahiro Tamura, Mobara, JP;
Takeshi Izumida, Mobara, JP;
Naoki Tokuda, Mobara, JP;
Junya Tamaki, Chiba, JP;
Nobuhiko Sato, Mobara, JP;
Masami Iseki, Mobara, JP;
Kouji Ikeda, Chiba, JP;
Masahiro Tamura, Mobara, JP;
Takeshi Izumida, Mobara, JP;
Naoki Tokuda, Mobara, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Hitachi Displays, Ltd., Mobara-shi, JP;
Abstract
An organic EL displaying apparatus which suppresses a defective display caused by a leak current at a time when an emission period controlling transistor is off is provided. The organic EL displaying apparatus comprises a plurality of pixels each of which includes an organic EL element, a power supply line, a driving transistor and the emission period controlling transistor, a data line, and a control line. In this apparatus, in a certain one of the pixels, a resistance RILM between source and drain electrodes of the emission period controlling transistor in an off state of the emission period controlling transistor, and a resistance RDr between source and drain electrodes of the driving transistor in a state that a minimum gradation displaying data voltage has been applied to a gate electrode of the driving transistor satisfy RILM≧RDr.