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:
Sep. 28, 2010
Filed:
Oct. 31, 2008
Hironori Toyoda, Mobara, JP;
Hajime Murakami, Tokyo, JP;
Shinichi Kato, Mobara, JP;
Masahiro Tanaka, Chiba, JP;
Hironori Toyoda, Mobara, JP;
Hajime Murakami, Tokyo, JP;
Shinichi Kato, Mobara, JP;
Masahiro Tanaka, Chiba, JP;
Hitachi Displays, Ltd., Chiba, JP;
Abstract
An organic electro-luminescence display device emits light by applying a voltage by an image signal between an upper electrode () and a lower electrode which sandwich an organic electro-luminescence layer. The organic electro-luminescence layer comprises an electron transporting layer, a light emitting layer, and a hole transporting layer. The electron transporting layer includes an organic material and cesium, and has a moisture absorbing characteristic. A structure in which the same materials as the electron transporting layer are used and which has a different constituent composition and a greater amount of cesium is used as a desiccant () and placed in a region which does not overlap the organic electro-luminescence layer, to effectively remove moisture inside the organic electro-luminescence display device.