Organic EL element and method of manufacturing the same, organic EL display device using the element, organic EL material, and surface emission device and liquid crystal display device using the material

Abstract

In an organic EL element, an organic EL layer is interposed between anodes and cathodes formed on a substrate. Each of the cathodes is made of a first conductive film that comes into contact with the organic EL layer and a second conductive film that constitutes a laminated structure together with the first conductive film. The first conductive film contains any one of an alkaline metal and an alkaline earth metal. The second conductive film contains any one of at least one type metal selected from a group consisting of Ru (ruthenium), Rh (rhodium), Ir (iridium), Os (osmium) and Re (rhenium) and its oxide.

1 - 3 . (canceled)  
     
     
         4 . An organic EL element manufacturing method comprising the steps of: 
 forming an anode on a substrate;    forming an organic EL layer on said anodes;    forming a first conductive film, that contains any one of an alkaline metal and an alkaline earth metal, on said organic EL layer; and    forming a second conductive film laminated on said first conductive film and containing a metal that is able to prevent entering of an oxygen and a moisture into said first conductive film when said metal is oxidized.    
     
     
         5 . An organic EL element manufacturing method according to  claim 4 , wherein said second conductive film contains any one of at least one type metal selected from a group consisting of Ru (ruthenium), Rh (rhodium), Ir (iridium), Os (osmium) and Re (rhenium) and its oxide.  
     
     
         6 . An organic EL element manufacturing method according to  claim 4 , wherein said second conductive film is formed of any one of a TiN film and a laminated film made of TiN and Ti.  
     
     
         7 - 8 . (canceled)  
     
     
         9 . An organic EL element manufacturing method comprising the steps of: 
 forming an anode on a substrate;    forming a buffer layer, which contains at least one type metal selected from a group consisting of Ru, Mo, and V, on said anode;    oxidizing a surface of said buffer layer;    forming an organic EL layer on said buffer layer; and    forming a cathode.    
     
     
         10 . An organic EL element manufacturing method according to  claim 9 , wherein said cathode contains any one of an alkaline metal and an alkaline earth metal.  
     
     
         11 . (canceled)  
     
     
         12 . An organic EL display device manufacturing method comprising the steps of: 
 forming a first electrode on a substrate;    forming an organic EL layer formed of organic EL material, in which a conjugate length of polymer is changed in response to light irradiation, on said first electrode;    irradiating partially a light onto said organic EL layer to change said conjugate length; and    forming a second electrode on said organic EL layer.    
     
     
         13 - 19 . (canceled)