Relief printing plate and method for producing organic EL device using the same

摘要

A method is provided for forming a uniform light emitting medium layer by a relief printing method without occurrence of printing defects. The method includes producing an organic EL device containing a substrate having thereon a pixel electrode, pixel regions that are demarcated with a partition wall on the pixel electrode, a light emitting medium layer having a light emitting layer containing at least an organic light emitting material on the pixel regions, and a counter electrode facing the pixel electrode. The method can have a step of forming at least one layer constituting the light emitting medium layer by a relief printing method, and the ink used in the relief printing method being transferred from two or more adjacent relief patterns within one of the pixel regions and being integrated by flow thereof to form the light emitting medium layer.

主权项

1. A method for producing an organic EL device including
a substrate having thereon a pixel electrode, a plurality of pixels that are demarcated with a partition wall on the pixel electrode, a light emitting medium layer having a light emitting layer containing at least an organic light emitting material on the pixels, and a counter electrode facing the pixel electrode, the method comprising a step of transferring an ink containing a light emitting medium material and a solvent to the pixels by a relief printing method to form the light emitting medium layer, the ink used in the relief printing method being transferred from two or more adjacent relief patterns within one of the pixels and being integrated by flow thereof to form the light emitting medium layer, wherein, in the relief printing, the ink is onto only the two or more adjacent relief patterns, and the ink is not filled in a groove(s) between the two or more adjacent relief patterns.