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. 14, 2010
Filed:
Aug. 21, 2008
Junji Kido, Yamagata-ken, JP;
Hitoshi Nakada, Yamagata-ken, JP;
Teruo Tohma, Yamagata-ken, JP;
Ryuji Murayama, Yamagata-ken, JP;
Toshinao Yuki, Yamagata-ken, JP;
Junji Kido, Yamagata-ken, JP;
Hitoshi Nakada, Yamagata-ken, JP;
Teruo Tohma, Yamagata-ken, JP;
Ryuji Murayama, Yamagata-ken, JP;
Toshinao Yuki, Yamagata-ken, JP;
Tohoku Pioneer Corporation, Yamagata-ken, JP;
Junji Kido, Yamagata-ken, JP;
Abstract
The new organic electroluminescent display device has a carrier-transporting layer and/or an organic luminous layer composed of a nematic liquid crystal or a liquid crystal dispersing a carrier-transporting low-molecule therein. When the organic luminous layer is to be bestowed with faculty as a liquid crystal, it is made of a nematic liquid crystal. Both the carrier-transporting layer and the organic luminous layer may be bestowed with faculty as a liquid crystal. Since the liquid crystal is incorporated in the carrier-transporting layer and/or the organic luminous layer, the display device can be driven as a liquid crystal display device in a dark place by charging with a voltage lower than a light emission initiating potential. Of course, it is driven as an electroluminescent display device when it is charged with a voltage higher than the light emission initiating potential. Use of an electroluminescent liquid crystal as a organic luminous layer enables omission of a carrier-transporting layer.