| 摘要 |
<p>The present invention relates to a method for recovering an organic light emitting material. The method for recovering an organic light emitting material of the present invention comprises: a vacuum deposition step of an organic light emitting layer in a process for preparing an organic light emitting display device; continuously dipping not a substrate but a deposition apparatus such as a deposition preventive plate, a mask, a crucible and the like in an eluate under an optimum condition to dissolve and extract a deposited organic light emitting material, and thus collect an entire amount of the same; separating and purifying the same with an adsorption resin; recrystallizing the same; and purifying the same by evaporation. According to recover method of the present invention, it is possible to save on processing costs by purifying and recovering an expensive organic light emitting material, which is thrown out after vacuum deposition, in a high purity of 99.9 % or more, and recovering and reusing 60 %(w/w) of the collected amount or more, thereby lowering costs.</p> |
