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:
Feb. 12, 2013
Filed:
Jul. 27, 2009
Nobuhiro Ide, Katano, JP;
Norihiro Ito, Suita, JP;
Hiroya Tsuji, Kyoto, JP;
Yuko Matsuhisa, Moriguchi, JP;
Nobuhiro Ide, Katano, JP;
Norihiro Ito, Suita, JP;
Hiroya Tsuji, Kyoto, JP;
Yuko Matsuhisa, Moriguchi, JP;
Panasonic Corporation, Kadoma-shi, JP;
Abstract
[Problem] The present invention aims to provide an electroluminescence device with an improved intermediate layer, for achieving a superior durability and sustainability performance thereof. [Solution] The present invention refers to organic electroluminescence devices having a plurality of light emitting layersbetween an anodeand a cathodewith the intermediate layerbeing interposed between two of the light emitting layers. The intermediate layercomprises one layerselected from a group consisting of a charge transfer complex layer made of a charge transfer complex, a metal layer made of a metal having a work function of 3.7 eV or less, and a metal compound layer made of a compound of the metal; an electrically conductive material-containing light transmissive layer; a charge transport organic material layerformed of a charge transport organic material; and a hole injection material layerformed of a hole injection material, which are superimposed in this order. The charge transport material layeris formed to have a thickness in a range of 0.5 nm to 30 nm.