Method for manufacturing organic EL device, organic EL device, and electronic apparatus

Abstract

The present invention provides reduced production cost in a method for manufacturing an organic EL device including a step of forming a light-emitting layer having a predetermined pattern by an ink-jet method. The method achieves this objective by not forming a bank which surrounds an area in a substrate surface other than an area at which a light-emitting layer is formed. A solution-repellent treatment is performed so that a droplet of a liquid containing a light-emitting material has a contact angle of 15° to 90° with respect to the substrate surface immediately before formation of the light-emitting layer. Accordingly, a fluorine containing layer (a layer composed of a material containing fluorine) is formed. Between a step of forming the light-emitting layer and a step of forming a cathode, a step of forming a hole blocking layer over the entire surface of the substrate is performed.

1 . A method for manufacturing an organic EL device having at least a first electrode layer, a light-emitting layer, and a second electrode layer are sequentially formed above a substrate, and the light-emitting layer is formed by supplying a liquid containing a light-emitting material to a light-emitting area above the substrate surface, the method comprising: 
 performing a solution-repellent treatment so that a droplet of the liquid has a contact angle of 15° to 90° with respect to the substrate surface immediately before the formation of the light-emitting layer; and    supplying the liquid to a predetermined position above the substrate surface to which the solution-repellent treatment is applied.    
     
     
         2 . The method for manufacturing an organic EL device according to  claim 1 , formation of the light-emitting layer being performed in a plurality of the light-emitting areas above the substrate surface by an ink-jet method.  
     
     
         3 . The method for manufacturing an organic EL device according to  claim 1 , the solution-repellent treatment being a plasma treatment using a fluorocarbon gas.  
     
     
         4 . The method for manufacturing an organic EL device according to  claim 1 , the solution-repellent treatment being performed by applying a fluorinated alkyl coupling agent.  
     
     
         5 . The method for manufacturing an organic EL device according to  claim 1 , further comprising performing a treatment that injects oxygen radicals into the substrate surface immediately before the solution-repellent treatment.  
     
     
         6 . The method for manufacturing an organic EL device according to  claim 1 , further comprising forming a hole blocking layer, which allows electrons but not holes to pass therethrough, in the light-emitting areas and therebetween above the substrate.  
     
     
         7 . The method for manufacturing an organic EL device according to  claim 6 , further comprising forming an electron blocking layer, which allows holes but not electrons to pass therethrough, in the light-emitting areas and therebetween above the substrate.  
     
     
         8 . The method for manufacturing an organic EL device according to  claim 1 , the first electrode layer being an anode, the second electrode layer being a cathode, and the solution-repellent treatment being performed in the light-emitting areas and therebetween on the substrate immediately before formation of the light-emitting layer.  
     
     
         9 . The method for manufacturing an organic EL device according to  claim 1 , the first electrode layer being an anode and the second electrode layer being a cathode, and further comprising forming a hole blocking layer, which allows electrons but not holes to pass therethrough, in the light-emitting areas and therebetween above the substrate after the formation of the light-emitting layers.  
     
     
         10 . The method for manufacturing an organic EL device according to  claim 9 , the hole blocking layer being a metal fluoride layer comprising at least one of an alkali metal fluoride and an alkali earth fluoride.  
     
     
         11 . The method for manufacturing an organic EL device according to  claim 8 , further comprising forming a hole injection/transport layer above the anodes, and performing a fluorination treatment on the hole injection/transport layer.  
     
     
         12 . A method for manufacturing an organic EL device having a plurality of light-emitting areas above a substrate, the method comprising: 
 forming first electrode layers by patterning above the substrate in the areas at which the light-emitting areas are to be formed;    forming a hole injection/transport layer above the first electrode layers and between the first electrode layers;    forming a light-emitting layer above the hole injection/transport layer in the areas at which the light-emitting areas are to be formed;    forming a hole blocking layer, which allows electrons but not holes to pass therethrough, in the light-emitting areas and therebetween including areas above the light-emitting layers; and    forming a second electrode layer above the hole blocking layer.    
     
     
         13 . The method for manufacturing an organic EL device according to  claim 12 , further comprising forming an electron blocking layer, which allows holes but not electrons to pass therethrough, between the hole injection/transport layer and the light-emitting layer and in the light-emitting areas and therebetween.  
     
     
         14 . The method for manufacturing an organic EL device according to  claim 12 , formation of the light-emitting layer being performed by an ink-jet method.  
     
     
         15 . The method for manufacturing an organic EL device according to  claim 12 , formation of the light-emitting layer being performed by a deposition method.  
     
     
         16 . The method for manufacturing an organic EL device according to  claim 12 , the hole blocking layer being a metal fluoride layer including at least one of an alkali metal fluoride and an alkali earth fluoride.