Method of manufacturing organic electroluminescent display device and organic electroluminescent display device and display device equipped with organic electroluminescent display device

Abstract

A method of manufacturing an organic electroluminescent display device, an organic electroluminescent display device, and a display device equipped with an organic electroluminescent display device are provided that enable a microlens to be formed without affecting an organic luminescent layer during the manufacturing process and to easily manufacture an organic electroluminescent display device with increased light output efficiency. According to the method, a lens pattern corresponding to a microlens that refracts the light from an organic luminescent layer is formed by performing photolithography treatment on a first transparent resin film formed on a substrate, and the microlens is formed by performing reflow treatment on the lens pattern.

1 . An organic electroluminescent display device, comprising: 
 a transparent substrate;    a switching element controlled by a first electrode and a transparent second electrode intersecting in matrix form;    a surface emitting element wherein a light-emitting state of an organic luminescent layer is controlled by the switching element, the organic luminescent layer being provided between the first electrode and the second electrode; and    a microlens provided between the substrate and the second electrode, the microlens having a convex curved surface facing the second substrate.    
   
   
       2 . The organic electroluminescent display device according to  claim 1 , wherein a diameter of the microlens is from 1 μm to 50 μm.  
   
   
       3 . The organic electroluminescent display device according to  claim 1 , wherein for each organic luminescent layer a plurality of corresponding microlenses is provided.  
   
   
       4 . The organic electroluminescent display device according to  claim 1 , wherein the refractive index of the microlens is from about 1.5 to about 1.8, and the refractive index of the second transparent resin is from about 1.2 to less than about 1.5.  
   
   
       5 . A display device equipped with an organic electroluminescent display device that makes a display through a light-emitting state of a plurality of organic luminescent layers, the organic electroluminescent display device comprising: 
 a transparent substrate;    a switching element controlled by a first electrode and a transparent second electrode intersecting in matrix form;    a surface emitting element wherein a state of the organic luminescent layers is controlled by the switching element, the organic luminescent layers being provided between the first electrode and the second electrode; and    a microlens having a convex curved surface facing the second electrode, the microlens being provided between the substrate and the second electrode.