Organic electroluminescence device emitting white light

Abstract

An organic electroluminescence device emitting white light which emits white light and exhibits properties sufficient for practical applications, i.e., a high efficiency of light emission and a long life, is provided. The organic electroluminescence device emitting white light comprises a pair of electrodes and a layer of a light emitting medium disposed between the pair of electrodes, wherein the layer of a light emitting medium comprises a light emitting material emitting blue light and a fluorescent compound having at least one structure selected from a fluoranthene skeleton structure, a pentacene skeleton structure and a perylene skeleton structure.

1 - 29 . (canceled)  
     
     
         30 . An organic electroluminescence device which comprises a pair of electrodes and a layer of a light emitting medium disposed between the pair of electrodes, wherein at least one layer in the layer of the light emitting medium comprises a light emitting material emitting blue light and a fluorescent dopant emitting blue light.  
     
     
         31 . An organic electroluminescence device according to  claim 30 , wherein the light emitting material emitting blue light is an anthracene derivative and the fluorescent dopant emitting blue light is a compound having a condensed aromatic ring.  
     
     
         32 . An organic electroluminescence device according to  claim 30 , wherein the light emitting material emitting blue light is an aromatic amine and the fluorescent dopant emitting blue light is a styrylamine.  
     
     
         33 . An organic electroluminescence device according to  claim 30 , wherein the light emitting material emitting blue light is an aromatic amine and the fluorescent dopant emitting blue light is a styryl compound substituted with an amine.  
     
     
         34 . An organic electroluminescence device according to  claim 30 , wherein the light emitting material emitting blue light is an aromatic amine and the fluorescent dopant emitting blue light is a compound having a condensed aromatic ring.  
     
     
         35 . An organic electroluminescence device according to  claim 31 , wherein the anthracene derivative is a compound having a phenylanthracene skeleton structure.  
     
     
         36 . An organic electroluminescence device according to  claim 32 , wherein the aromatic amine is a compound having 2 to 4 nitrogen atoms which are substituted with an aromatic group.  
     
     
         37 . An organic electroluminescence device according to  claim 33 , wherein the aromatic amine is a compound having 2 to 4 nitrogen atoms which are substituted with an aromatic group.  
     
     
         38 . An organic electroluminescence device according to  claim 34 , wherein the aromatic amine is a compound having 2 to 4 nitrogen atoms which are substituted with an aromatic group.  
     
     
         39 . An organic electroluminescence device according to  claim 32 , wherein the aromatic amino is a compound having 2 to 4 nitrogen atoms which are substituted an aromatic group and having at least one alkenyl group.  
     
     
         40 . An organic electroluminescence device according to  claim 33 , wherein the aromatic amino is a compound having 2 to 4 nitrogen atoms which are substituted an aromatic group and having at least one alkenyl group.  
     
     
         41 . An organic electroluminescence device according to  claim 34 , wherein the aromatic amino is a compound having 2 to 4 nitrogen atoms which are substituted an aromatic group and having at least one alkenyl group.  
     
     
         42 . An organic electroluminescence device according to  claim 32 , wherein the styrylamine is a compound represented by general formula [viii] 
       
         
           
           
               
               
           
         
         wherein each of Ar 1″ , Ar 2″  and Ar 3″  independently represents a substituted or unsubstituted aryl group having 6 to 40 carbon atoms, at least one of the groups represented by Ar 1″  to Ar 3″  has a styryl group and p represents an integer of 1 to 3.  
       
     
     
         43 . An organic electroluminescence device according to  claim 33 , wherein the styryl compound substituted with an amine is a compound represented by general formula [ix] 
       
         
           
           
               
               
           
         
         wherein each of Ar 4″  and Ar 5″  independently represents an arylene group having 6 to 30 carbon atoms, E 1  and E 2  each independently represent an aryl group having 6 to 30 carbon atoms, an alkyl group, hydrogen atom or cyano group, q, represents an integer of 1 to 3, and at least one of U and V represents a substituent having an amino group,  
       
     
     
         44 . An organic electroluminescence device according to  claim 31 , wherein the compound having a condensed aromatic ring is a compound represented by general formula [x] 
       
         
           
           
               
               
           
         
         wherein A represents an alkyl group or an alkoxy group having 1 to 16 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted alkylamino group having 6 to 30 carbon atoms, or a substituted or unsubstituted arylamino group having 6 to 30 carbon atoms; B represents a condensed aromatic ring group having 10 to 40 carbon atoms; and r represents an integer of 1 to 4.  
       
     
     
         45 . An organic electroluminescence device according to  claim 34 , wherein the compound having a condensed aromatic ring is a compound represented by general formula [x] 
       
         
           
           
               
               
           
         
         wherein A represents an alkyl group or an alkoxy group having 1 to 16 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted alkylamino group having 6 to 30 carbon atoms, or a substituted or unsubstituted arylamino group having 6 to 30 carbon atoms; B represents a condensed aromatic ring group having 10 to 40 carbon atoms; and r represents an integer of 1 to 4.  
       
     
     
         46 . An organic electroluminescence device according to  claim 44 , wherein A is the substituted or unsubstituted aryl group having 6 to 30 carbon atoms.  
     
     
         47 . An organic electroluminescence device according to  claim 44 , wherein A is the substituted or unsubstituted arylamino group having 6 to 30 carbon atoms.  
     
     
         48 . An organic electroluminescence device according to  claim 44 , wherein A is the substituted or unsubstituted alkylamino group having 6 to 30 carbon atoms.  
     
     
         49 . An organic electroluminescence device according to  claim 45 , wherein A is the substituted or unsubstituted aryl group having 6 to 30 carbon atoms.  
     
     
         50 . An organic electroluminescence device according to  claim 45 , wherein A is the substituted or unsubstituted arylamino group having 6 to 30 carbon atoms.  
     
     
         51 . An organic electroluminescence device according to  claim 45 , wherein A is the substituted or unsubstituted alkylamino group having 6 to 30 carbon atoms.