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. 17, 2012
Filed:
May. 18, 2006
Sukekazu Aratani, Hitachiota, JP;
Hajime Murakami, Tokyo, JP;
Masao Shimizu, Hitachi, JP;
Kazuhito Masuda, Hitachi, JP;
Sukekazu Aratani, Hitachiota, JP;
Hajime Murakami, Tokyo, JP;
Masao Shimizu, Hitachi, JP;
Kazuhito Masuda, Hitachi, JP;
Hitachi Displays, Ltd., Chiba, JP;
Panasonic Liquid Crystal Display Co., Ltd., Hyogo-ken, JP;
Abstract
The present invention is intended to provide a top emission type organic light emitting display device which prevents the organic film from being oxidized during the formation of the upper transparent electrode and can emit light at a low voltage. The top emission type organic light emitting display device includes: a substrate; an organic light emitting layer; and upper and lower electrodes sandwiching the organic light emitting layer, where the lower electrode is arranged between the substrate and the organic light emitting layer, the upper electrode is arranged on the opposite side of the substrate with respect to the lower electrode, light emitted from the organic light emitting layer is taken out from the upper electrode side, and an organic layer which is mainly composed of an organic material having a heterocyclic group containing one or more nitrogen atoms, is included between the organic light emitting layer and the upper electrode.