Manufacturing method of organic electroluminescence display device

Abstract

A method of manufacture of an organic electroluminescence display device includes (1) a first step of forming a non-affinity region in a surface of an anode provided in each of the pixels arranged on a glass substrate by exposing the glass substrate in a saturated vapor pressure of an organic solvent, (2) a second step of forming an affinity region in a central portion of the anode surface spaced from its edges by irradiating the central portion of the anode surface with ultraviolet light, and (3) a third step of forming polymer material layers which constitute an organic electroluminescent element in each of the pixels in the affinity region by blowing off polymer material solutions onto the affinity region of the anode in the each of the pixels. In this way, it is possible to simplify the steps in, to reduce the cost for, and to improve the productivity of the process of manufacture of the organic electroluminescence display device.

1 . A method of manufacture of an organic electroluminescence display device comprising: 
 a step of patterning a plurality of anodes for each of a plurality of pixels on a light transmitting glass substrate;    a step of forming an outer wall layer by applying a polymer organic material to an outer peripheral portion which surrounds a region where the anodes are formed on the light transmitting glass substrate and by heating and drying the polymer organic material;    a step of forming affinity regions by irradiating ultraviolet rays to pixel center portions, except for electrode surface peripheral portions of the anodes;    a step of forming hole injection layers by blowing off a conductive polymer material solution to the affinity regions and by heating and drying the conductive polymer material solution;    a step of forming light emitting layers by blowing off a polymer light emitting material solution to the hole injection layers and by heating and drying the polymer light emitting material solution;    a step of forming a black insulation layer to peripheral portions of the anodes by injecting an organic black insulation material solution to the inside of the anode forming region, which is surrounded by the outer wall layer, and by heating and drying the organic black insulation material solution;    a step of forming an electron injection layer on the light emitting layer;    a step of forming a cathode on the electron injection layer;    a step of forming a protective film on the cathode; and    a step of sealing the light transmitting glass substrate and another glass substrate by interposing an ultraviolet curing sealing material between a facing surface of the outer wall layer formed on the light transmitting glass substrate and a facing surface of an inner peripheral portion of the another glass substrate having a drying material on an inner surface side thereof.    
   
   
       2 . A method of manufacture of an organic electroluminescence display device comprising: 
 a step of patterning a plurality of anodes for each of a plurality of pixels on a light transmitting glass substrate;    a step of forming an outer wall layer by applying a polymer organic material to an outer peripheral portion which surrounds a region where the anodes are formed on the light transmitting glass substrate and by heating and drying the polymer organic material;    a step of forming non-affinity regions on surfaces of the anodes by exposing the light transmitting glass substrate under a saturated vapor pressure of an organic solvent;    a step of forming affinity regions by irradiating ultraviolet rays to pixel center portions, except for electrode surface peripheral portions of the anodes;    a step of forming hole injection layers by blowing off a conductive polymer material solution to the affinity regions and by heating and drying the conductive polymer material solution;    a step of forming light emitting layers by blowing off a polymer light emitting material solution to the hole injection layers and by heating and drying the polymer light emitting material solution;    a step of forming a black insulation layer to peripheral portions of the anodes by injecting an organic black insulation material solution to the inside of the anode forming region, which is surrounded by the outer wall layer, and by heating and drying the organic black insulation material solution;    a step of forming an electron injection layer on the light emitting layer;    a step of forming cathodes on the electron injection layer;    a step of forming a protective film on the cathodes; and    a step of sealing the light transmitting glass substrate and another glass substrate by interposing an ultraviolet curing sealing material between a facing surface of the outer wall layer formed on the light transmitting glass substrate and a facing surface of an inner peripheral portion of the other glass substrate having a drying material on an inner surface side thereof.    
   
   
       3 . A manufacturing method according to  claim 1 , wherein the concentration of the organic black insulation material solution is larger than the concentration of the polymer light emitting material solution.  
   
   
       4 . A manufacturing method according to  claim 2 , wherein the concentration of the organic black insulation material solution is larger than the concentration of the polymer light emitting material solution.