COATING METHOD, AND ORGANIC ELECTROLUMINESCENCE ELEMENT

摘要

Disclosed are a coating method of forming a coating with a stable thickness from a coating solution with a low viscosity employing a slit-type die coater and an organic electroluminescence element prepared employing the coating method. The coating method employing a slit-type die coater comprises the steps of allowing a lip tip of the slit-type die coater to bring close to the substrate to form a coating solution bead between the lip tip and the substrate, and coating on the substrate a coating solution ejected from a slit outlet at the lip tip while relatively moving the slit-type die coater and the substrate, thereby forming at least two coating layers in the stripe shape, featured in that the lip tip has at least one groove in the coating region in the coating width direction, and a pressure at the slit outlet of the coating solution of the bead is negative or zero.