Display module

Abstract

A display module to prevent the leakage current generated between a first electrode layer and a second electrode layer that constitute a pixel via an organic light emitting layer and obtains uniform luminance. An interlayer insulation layer is provided between an edge of a first electrode layer and an organic light emitting layer that constitute the pixel and the distance between the edge and a second electrode layer is secured sufficiently. Further, the interlayer insulation layer ILI is coated with a resin material having fluidity, and flatness is improved as a whole. An aperture that accommodates the organic light emitting layer is formed in this interlayer insulation layer and the coated organic light emitting layer is formed in uniform thickness and through a necessary and sufficient spread.

1 . A display module, comprising: 
 a TFT,    a first insulation layer provided on a source electrode of the PFT,    a first electrode layer connected to the source electrode, provided on the first insulation layer:    a second insulation layer formed on the first insulation layer and the first electrode layer, said second insulation layer being provided with an aperture on the first electrode layer,    a second electrode layer formed on the first electrode and the second insulation layer: and    an organic light emitting layer formed in the aperture,    wherein the second insulation layer includes an inner wall at the aperture, said inner wall having a convex surface on an edge of the first electrode layer, and    wherein the convex surface is located between the organic light emitting layer and the edge of the first electrode layer.    
   
   
       2 . A display module, comprising: 
 a TFT:    a first insulation layer provided on a source electrode of the TFT:    a first electrode layer connected by the source electrode, provided on the first insulation layer:    a second insulation layer formed on the first insulation layer and the first electrode layer, and said second insulation layer being provided with an aperture on the first electrode layer:    a second electrode layer formed on the first electrode and the second insulation layer, and    an organic light emitting layer formed in the aperture:    wherein the second insulation layer includes an inner wall at the aperture, said inner wall having a convex surface in a sectional view of the inner wall on an edge of the first electrode layer, and    wherein the organic light emitting layer and the edge of the first electrode layer are isolated from one another by the inner wall.    
   
   
       3 . The display module according to  claim 1 , 
 wherein the aperture is formed in bypassed regions from a pixel circuit and a wire.    
   
   
       4 . The display module according to  claim 1 , 
 wherein the second insulation layer is formed by being coated with a resin.    
   
   
       5 . The display according to  claim 4 , 
 wherein the second insulation layer is formed by being coated with an acrylic resin.    
   
   
       6 . The display module according to claims  1 , 
 wherein the second insulation layer is formed by covering all edges of the first electrode layer in the aperture.    
   
   
       7 . The display module according to  claim 1 , wherein the first electrode is formed using ITO.  
   
   
       8 . The display module according to  claim 1 , wherein the organic light emitting layer is formed in the aperture of the second insulation layer by using an inkjet system, a mask printing system or a spin coating system.  
   
   
       9 . A display module, comprising: 
 a substrate    a plurality of pixel regions each comprising an organic light emitting device arranged in the shape of a matrix,    an active element connected to the organic light emitting elements through a passivation film formed thereon,    an organic light emitting device comprising a first electrode comprised of a metal thin film, an organic light emitting layer formed on the first electrode, and a second electrode formed on the organic light emitting layer;    an interlayer insulation layer formed between the first electrode and the second electrode of the organic light emitting element, respectively, and including an aperture in which the organic light emitting layer is held.    
   
   
       10 . The display module according to  claim 2 , 
 wherein the aperture is formed in bypassed regions from a pixel circuit and a wire.    
   
   
       11 . The display module according to  claim 2 , 
 wherein the second insulation layer is formed by being coated with a resin.    
   
   
       12 . The display module according to claims  2 , 
 wherein the second insulation layer is formed by covering all edges of the first electrode layer in the aperture.    
   
   
       13 . The display module according to  claim 2 , wherein the first electrode is formed using ITO.  
   
   
       14 . The display module according to  claim 2 , wherein the organic light emitting layer is formed in the aperture of the second insulation layer by using an inkjet system, a mask printing system or a spin coating system.