Organic electroluminescent display device and manufacturing method of organic electroluminescent display device

Abstract

The present invention provides a top-emission-type organic EL display device. In a top-emission-type organic EL display device which includes organic EL elements each of which is formed by stacking a reflective lower electrode, a function layer and a light-transmissive upper electrode in order, the upper electrode contains a plurality of fine particles which are made of a material different from a material of the upper electrode. The fine particles are preferably made of silica. A portion of the upper electrode may be provided below the fine particles and a portion of the upper electrode may be provided above the fine particles.

Description

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a conceptual cross-sectional view of an organic EL display device;

FIG. 2 is a plan view of the organic EL display device;

FIG. 3 is a manufacturing flow chart of a sealing substrate;

FIG. 4 is a flow chart for forming organic EL elements on a TFT substrate;

FIG. 5 is a view showing a sealing step;

FIG. 6 is a schematic cross-sectional view of an organic EL display device;

FIG. 7 is a schematic cross-sectional view of an organic EL display device;

FIG. 8 is a schematic cross-sectional view of an organic EL display device; and

FIG. 9 is a schematic cross-sectional view of an organic EL display device.

Claims

1. An organic EL display device of top emission type which includes organic EL elements each of which is formed by stacking a reflective lower electrode, a function layer and a light-transmissive upper electrode in order, wherein the upper electrode contains a plurality of fine particles which are made of a material different from a material of the upper electrode.

2. An organic EL display device according to claim 1, wherein the fine particles are made of silica.

3. An organic EL display device according to claim 1, wherein a portion of the upper electrode is provided below the fine particles, and a portion of the upper electrode is also provided above the fine particles.

4. An organic EL display device according to claim 1, wherein a sealing substrate which seals the organic EL elements by way of a space is provided outside the upper electrodes of the organic EL elements.

5. An organic EL display device according to claim 2, wherein a sealing substrate which seals the organic EL elements by way of a space is provided outside the upper electrodes of the organic EL elements.

6. A manufacturing method of an organic EL display device of top emission type which includes organic EL elements each of which is formed by stacking reflective lower electrodes, a function layer and light-transmissive upper electrodes in order, wherein fine particles which are made of a material different from a material of the upper electrode are formed after forming a portion of the upper electrodes and, thereafter, remaining upper electrodes are formed.