Organic electroluminescence display device

Abstract

The organic electroluminescence display device has a circuit board, an element layer which contains an organic electroluminescence film and a positive electrode and a negative electrode sandwiching the organic electroluminescence film and which is formed on the circuit board, and a sealing film sealing the element layer. The sealing film contains an inorganic layer covering the element layer and an organic layer formed between a part of the element layer and a part of the inorganic layer. The upper surface of the element layer has an inorganic contact area contacting the inorganic layer and an organic contact area contacting the organic layer. The organic contact area is a hollow in the upper surface of the element layer. The area of the upper surface of the organic layer is smaller than the area of the lower surface contacting the inner surface of the hollow.

What is claimed is: 
     
         1 . An organic electroluminescence display device comprising:
 a circuit board;   an element layer which contains an organic electroluminescence film and a positive electrode and a negative electrode sandwiching the organic electroluminescence film and which is formed on the circuit board; and   a sealing film sealing the element layer,   wherein the sealing film contains an inorganic layer covering the element layer and an organic layer formed between a part of the element layer and a part of the inorganic layer;   the upper surface of the element layer has an inorganic contact area contacting the inorganic layer and an organic contact area contacting the organic layer;   the organic contact area is a hollow in the upper surface of the element layer; and   the area of the upper surface of the organic layer is smaller than the area of the lower surface contacting the inner surface of the hollow.   
     
     
         2 . The organic electroluminescence display device of  claim 1 ,
 wherein the positive electrode is two or more pixel electrodes under the organic electroluminescence film and the negative electrode is a common electrode on the organic electroluminescence film.   
     
     
         3 . The organic electroluminescence display device of  claim 2 ,
 wherein the upper surface of the element layer has the inorganic contact area and the organic contact area in an area over each of the pixel electrodes.   
     
     
         4 . The organic electroluminescence display device of claim
 which further has an insulating layer formed between an edge of each of the pixel electrodes and the common electrode,   wherein the upper surface of the element layer has a protruding part along the shape of the insulating layer, and the hollow is formed from a low area which is over each of the pixel electrodes and is adjacent to the protruding part to an area rising to form the protruding part.   
     
     
         5 . The organic electroluminescence display device of  claim 1 ,
 wherein the organic contact area is completely surrounded by the inorganic contact area.