Patent Number: 7,819,716

Title: Organic electroluminescent element and the manufacturing method

Abstract: A manufacturing method of an organic electroluminescent element is provided. The method includes forming an insulator layer between pattern-formed pixel electrodes on a substrate, and forming a hole transport layer by printing hole transport ink, having a hole transport material dissolved in a solvent, on the pixel electrodes between the insulator layers by relief printing, wherein the hole transport ink includes 3,4-polyethylen dihydroxy thiophen (PEDOT), and monohydric alcohol and dihydric alcohol as solvents.

Inventors: Murata; Koji (Tokyo, JP)

Assignee: Toppan Printing Co., Ltd.

International Classification: H01J 9/24 (20060101); H01L 51/56 (20060101)

Expiration Date: 2018-10-26 0:00:00