Organic Light-Emitting Element, Method for Manufacturing the Organic Light-Emitting Element, Apparatus for Manufacturing the Organic Light-Emitting Element, and Organic Light-Emitting Device Using the Organic Light-Emitting Element

Abstract

An organic light-emitting display device is provided that has prolonged service life, lowered wiring resistance that can lower power consumption, and that is easy to manufacture. In a first embodiment, a moisture capturing layer is provided between an upper electrode and a lower electrode. A second embodiment includes a metal substrate, an organic light-emitting element on the substrate and an upper transparent electrode connected to the substrate through a contact hole. In a third embodiment, a method is provided for forming a first organic compound including a light-emitting layer, heating the first organic compound in vacuo, and forming a second organic compound.

What is claimed is: 
     
         1 . An organic light-emitting display device comprising:
 a light-emitting layer;   an upper electrode and a lower electrode sandwiching the light-emitting layer, wherein one of the upper and lower electrodes comprises a transparent electrode transmitting a light emitted from the light-emitting layer and the other electrode of the upper and lower electrodes comprises a reflective electrode which reflects a light emitted from the light-emitting layer; and   a moisture capturing layer disposed between the upper electrode and the lower electrode.   
     
     
         2 . The organic light-emitting display device according to  claim 1 , wherein the moisture capturing layer is disposed between the light-emitting layer and the upper electrode. 
     
     
         3 . The organic light-emitting display device according to  claim 2 , wherein a blocking layer and an electron transporting layer are disposed between the upper and lower electrodes, and the moisture capturing layer is disposed between the blocking layer and the electron transporting layer. 
     
     
         4 . The organic light-emitting display device according to  claim 2 , wherein the moisture capturing layer is disposed adjacently to the light-emitting layer, and the light-emitting layer is doped with a dopant at a lower concentration on a side adjacent to the moisture capturing layer than on the opposite side. 
     
     
         5 . The organic light-emitting display device according to  claim 2 , wherein the moisture capturing layer is disposed adjacently to the light-emitting layer, and the light-emitting layer has a light-emitting region separated from the moisture capturing layer. 
     
     
         6 . The organic light-emitting display device according to  claim 2 , wherein a blocking layer is disposed between the upper and lower electrodes, the moisture capturing layer is disposed between the light-emitting layer and the blocking layer, and the light-emitting layer contains an electron transporting material. 
     
     
         7 . The organic light-emitting display device according to  claim 2 , wherein a bank surface-treated to be water-repellent is disposed between the upper and lower electrodes. 
     
     
         8 . The organic light-emitting display device according to  claim 2 , wherein a light-emitting dopant dispersed in the light-emitting layer has an asymmetric structure. 
     
     
         9 . The organic light-emitting display device according to  claim 2 , wherein at least one of the materials, that constitute the light-emitting layer, has an asymmetric structure. 
     
     
         10 . The organic light-emitting display device according to  claim 2 , wherein the light-emitting layer contains a high-molecular-weight material. 
     
     
         11 . The organic light-emitting display device according to  claim 2 , wherein a thin, liquid-repellent film is disposed between adjacent pixels. 
     
     
         12 . The organic light-emitting display device according to  claim 1 , wherein the moisture capturing layer contains a metal and/or metal oxide.