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:
Apr. 04, 2006
Filed:
Nov. 22, 2004
Toshinao Yuki, Yamagata-ken, JP;
Kunihiko Shirahata, Yamagata-ken, JP;
Kota Hasebe, Yamagata-ken, JP;
Masaki Murakata, Yamagata-ken, JP;
Toshinao Yuki, Yamagata-ken, JP;
Kunihiko Shirahata, Yamagata-ken, JP;
Kota Hasebe, Yamagata-ken, JP;
Masaki Murakata, Yamagata-ken, JP;
Tohoku Pioneer Corporation, Yamagata-ken, JP;
Abstract
An organic EL display apparatus which can improve the reliability thereof, by avoiding a leak current which occurs after an operating time, without reducing the product yield. The organic EL display apparatus is comprised of an organic EL panel section, and a driving section which has a reverse voltage restriction unit (means for restricting a reverse voltage) for restricting a reverse voltage which is applied when organic EL devices are not lighted. When a breakdown voltage with respect to a preset thickness dof the organic material layer has been V, the reverse voltage restriction unit will not only set the reverse voltage V(to be applied during a non-lighting period) to V<(½)·V, but also restrict the continuous applying time of this reverse voltage Vwithin a preset period.