Organic EL display panel and its manufacturing method

Abstract

Disclosed is an organic EL display panel comprising: a substrate; a plurality of anode layers laminated on said substrate in a laminating direction and arranged with intervals in a direction perpendicular to the laminating direction; a high polymer layer laminated on said anode layers; an organic EL layer laminated on said high polymer layer; and a plurality of cathode layers laminated on said organic EL layer in a laminating direction and arranged with spaces in a direction perpendicular to the laminating direction, wherein said high polymer layer comprises: an energizing region facing said cathode layers; and a gap region disposed between said adjacent anode layers, wherein said gap region has a conductivity lower than said energizing region. Also, a method for producing the organic EL display panel is disclosed.

What is claimed is:  
     
         1 . An organic EL display panel comprising: 
 a substrate;    a plurality of anode layers laminated on said substrate in a laminating direction and arranged with intervals in a direction perpendicular to the laminating direction;    a high polymer layer laminated on said anode layers;    an organic EL layer laminated on said high polymer layer; and    a plurality of cathode layers laminated on said organic EL layer in a laminating direction and arranged with spaces in a direction perpendicular to the laminating direction,    wherein said high polymer layer comprises: an energizing region facing said cathode layers; and a gap region disposed between said adjacent anode layers,    wherein said gap region has a conductivity lower than said energizing region.    
     
     
         2 . An organic EL display panel according to    claim 1   , wherein said gap region of said high polymer layer is insulative.  
     
     
         3 . An organic EL display panel formed by laminating on a substrate, a plurality of anode layers arranged with intervals in a direction perpendicular to the laminating direction, a conductive high polymer layer, an organic EL layer, and a plurality of cathode layers arranged with spaces in a direction perpendicular to the laminating direction, in this order, 
 wherein said conductive high polymer layer comprises: an energizing region facing the cathode layers; and a gap region disposed between said adjacent anode layers,    wherein said conductive high polymer layer is subjected to a conductivity reducing step of reducing the conductivity of said gap region, after said conductivity high polymer has been laminated on said anode layers.    
     
     
         4 . An organic EL display panel according to    claim 3   , wherein said gap region of said conductive high polymer layer is made insulative by said conductivity reducing step.  
     
     
         5 . An organic EL display panel according to    claim 3    or    4   , wherein said conductive high polymer comprises polyaniline mixed with camphor-sulfonic acid, and said conductivity reducing step is carried out in such a manner that said gap region of said conductive high polymer layer is immersed in an alkaline solution.  
     
     
         6 . An organic EL display panel formed by laminating on a substrate, a plurality of anode layers arranged with intervals in a direction perpendicular to the laminating direction, a non-conductive high polymer layer capable of being imparted conductivity, an organic EL layer, and a plurality of cathode layers arranged with spaces in a direction perpendicular to the laminating direction, in this order, 
 wherein said non-conductive high polymer layer comprises: an energizing region facing said cathode layers; and a gap region disposed between said adjacent anode layers,    wherein said non-conductive high polymer layer is subjected to a conductivity imparting step of reducing the conductivity of the energizing region, after said non-conductivite high polymer layer has been laminated on said anode layers.    
     
     
         7 . An organic EL display panel according to    claim 6   , wherein said non-conductive high polymer layer comprises polyaniline, and said conductivity imparting step is carried out in such a manner that said energizing region is immersed in an acidic solution.  
     
     
         8 . A method of manufacturing an organic EL display panel comprising the steps of: 
 forming a plurality of anode layers so as to be arranged with intervals on a substrate;    laminating a conductive high polymer layer on said substrate so as to cover said plurality of anode layers, wherein said conducting high polymer layer comprises a gap region disposed between said adjacent anode layers;    reducing the conductivity of the gap region;; and    successively laminating an organic EL layer and a cathode layer on said conductive high polymer layer.    
     
     
         9 . A method of manufacturing an organic EL display panel according to    claim 8   , wherein the step of reducing conductivity is to make said gap region insulative.  
     
     
         10 . A method of manufacturing an organic EL display panel according to    claim 8    or    9   , wherein said conductive high polymer layer is polyaniline mixed with camphor-sulfonic acid, and said conductivity reducing step is carried out in such a manner that said gap region of said conductive high polymer layer is immersed in an alkaline solution.  
     
     
         11 . A method of manufacturing an organic EL display panel comprising the steps of: 
 forming a plurality of anode layers so as to be arranged with intervals on a substrate;    laminating a non-conductive high polymer layer capable of being imparted conductivity on said substrate so as to cover said plurality of anode layers, wherein said non-conducting high polymer layer comprises an energizing region facing a plurality of cathode layers;    imparting conductivity to the energizing region of said non-conductive high polymer layer; and    successively laminating an organic EL layer and the cathode layers on said non-conductive high polymer layer.    
     
     
         12 . An organic EL display panel according to    claim 11   , wherein said non-conductive high polymer comprises polyaniline, and said conductivity imparting step is carried out in such a manner that said energizing region are immersed in an acidic solution.