JP2008204792A5 - - Google Patents

Claims (5)

A pixel electrode, an insulating layer to define a light emitting region on the pixel electrode, an organic light emitting medium layer comprising two layers of said laminated on the light-emitting region and at least a hole transporting layer and organic light emitting layer, the organic luminescent medium layer A method for producing an organic electroluminescence element comprising a counter electrode facing the pixel electrode via
In the light emitting region, a hole transport layer is formed by printing an ink in which a hole transport material or an organic light emitting material is dissolved or dispersed in a solvent on a pixel electrode between a convex portion of a relief plate and the insulating layer by a relief printing method. or comprising a step of forming a light emitting layer, where, by providing the time the ink on the relief plate is semi-drying, the production of organic electroluminescent device characterized by increasing the concentration and viscosity of the ink Method. The ink having a solid concentration of 0.5 to 4.0% by weight, a viscosity of 10 to 30 mPa · s, and a vapor pressure of 0.1 to 20 kPa under conditions of a relative humidity of 40 to 50% and a temperature of 23 to 26 ° C. The method for producing an organic electroluminescent element according to claim 1, wherein the half-drying time is 5 to 60 seconds when printing. The method for producing an organic electroluminescent element according to claim 1, wherein the solid content concentration of the ink after the semi-drying is 5 to 30% by weight. The method for producing an organic electroluminescent element according to claim 1, wherein the ink has a viscosity of 30 to 100 mPa · S after the semi-drying. A pixel electrode; an insulating layer defining a light emitting region on the pixel electrode; an organic light emitting medium layer including at least two layers of a hole transport layer and an organic light emitting layer stacked on the light emitting region; and the organic light emitting medium layer 5. In an organic electroluminescence device comprising: a counter electrode facing the pixel electrode through a plurality of electrodes, wherein the organic light emitting medium layer emits light by flowing a current from both electrodes to the organic light emitting medium layer. An organic electroluminescence device formed by using the manufacturing method according to claim 1.