Organic electroluminescent device and the manufacturing method

Abstract

An organic electroluminescence device is provided including a luminescent medium layer, wherein the luminescence medium layer includes plural layers, wherein the plural layers includes a low molecular material layer comprising low molecular material and a high molecular material layer comprising high molecular material, and wherein at least one low molecular material layer is directly formed on at least one high molecular materials layer.

Description

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a sectional view of an organic electroluminescent device of an embodiment of the present invention.

FIG. 2 is a sectional view of an organic electroluminescent display device of passive matrix type of an embodiment of the present invention.

FIG. 3 is a schematic diagram which shows a relief duplicator used in the present invention.

FIG. 4 is a sectional view of an organic electroluminescent device of an embodiment of the present invention.

Claims

1. An organic electroluminescence device including a substrate, a first electrode layer formed on the substrate, a luminescent medium layer formed on the first electrode layer and a second electrode layer formed on the luminescence medium layer, wherein the first electrode layer or the second electrode layer is a transparent electrode or a counter electrode,wherein the luminescence medium layer includes plural layers,wherein the plural layers includes an organic luminescent layer comprising an organic electroluminescence material,wherein the plural layers includes a low molecular material layer comprising a low molecular material and a high molecular material layer comprising a high molecular material, andwherein at least one low molecular material layer is directly formed on at least one high molecular material layer.

2. The organic electroluminescence device according to claim 1, wherein a low molecular material layer is sandwiched between two high molecular material layers.

3. The organic electroluminescence device according to claim 1, wherein the device is a display device.

4. A manufacturing method of an organic electroluminescence device including a substrate, a first electrode layer formed on the substrate, a luminescent medium layer formed on the first electrode layer and a second electrode layer formed on the luminescence medium layer, wherein the first electrode layer or the second electrode layer is a transparent electrode or a counter electrode,wherein the luminescence medium layer includes plural layers,wherein the plural layers includes an organic luminescent layer comprising an organic electroluminescence material,wherein the plural layers includes a low molecular material layer comprising low molecular material and a high molecular material layer comprising a high molecular material, andwherein at least one low molecular material layer is directly formed on at least one high molecular material layer,said method includes forming the low molecular material layer by a wet process.

5. The manufacturing method of an organic electroluminescence device according to claim 4, wherein the wet process comprises relief printing.