Organic electroluminescent element and the manufacturing method
AssigneeToppan Printing Co., Ltd.
InventorKoji Murata
Life of this patent
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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.
Claims6
A manufacturing method of an organic electroluminescent element including pixel electrodes, cathode(s) and an organic luminescent medium layer including an organic luminescent layer and an hole transport layer,
- said method including
- forming an insulator layer between pattern shaped pixel electrodes on a substrate, and forming a hole transport layer on the pixel electrodes between insulator layers by relief printing hole transport ink,
- wherein said hole transport ink includes 3,4-polyethylen dihydroxy thiophen (PEDOT), monohydric alcohol and dihydric alcohol, and
- wherein a total of the weight fraction of the monohydric alcohol and the dihydric alcohol in the hole transport ink is 5%-50%.
An organic electroluminescent element including pixel electrodes, cathode(s) and an organic luminescent medium layer including an organic luminescent layer and a hole transport layer,
- said element includes
- an insulator layer between pattern shaped pixel electrodes on a substrate, and
- a hole transport layer on the pixel electrodes between insulator layers,
- wherein the hole transport layer is formed by relief printing hole transport ink,
- wherein the hole transport ink includes 3,4-polyethylen dihydroxy thiophen (PEDOT), monohydric alcohol and dihydric alcohol, and
- wherein a total of the weight fraction of the monohydric alcohol and the dihydric alcohol in the hole transport ink is 5%-50%.
Dependencies are inferred from the claim text.