JP2014102976A5

JP2014102976A5 -

Info

Publication number: JP2014102976A5
Application number: JP2012254123A
Authority: JP
Filing date: 2012-11-20
Publication date: 2015-04-30
Anticipated expiration: 2032-11-20

Claims

An element substrate;
An undulation formed on the element substrate and having a height in a direction perpendicular to the upper surface of the element substrate;
An organic electroluminescence element,
The undulating portion has a plurality of inclined surfaces with an acute angle with respect to the upper surface of the element substrate;
The organic electroluminescence display device, wherein the organic electroluminescence element is formed on a region between undulations that is a region between the undulations on the upper surface of the element substrate and on each of the inclined surfaces. .

The organic electroluminescence display device according to claim 1,
The plurality of slopes are
A first slope that is perpendicular to the first direction;
A second slope that is perpendicular to a second direction that is different from the first direction;
The organic electroluminescence element is
A first lower electrode formed on the first slope and a first light emitting layer formed on the first lower electrode;
A second lower electrode formed on the second slope and a second light emitting layer formed on the second lower electrode;
A third lower electrode formed on the region between the undulations and a third light emitting layer formed on the third lower electrode;
Have
The first light-emitting layer, the second light-emitting layer and the third light-emitting layer emit light in different colors,
An organic electroluminescence display device.

The organic electroluminescence display device according to claim 2,
A first bank protruding in the vertical direction and formed at a boundary between the first slope and the upper surface of the element substrate;
A second bank protruding in the vertical direction and formed at a boundary between the second slope and the upper surface of the element substrate;
The vertical direction, which is formed between the first slope and the second slope, is formed on an upper portion of the undulating portion, which is the largest region of the undulating portion, in the vertical direction from the upper surface of the element substrate. A third bank protruding into
An organic electroluminescence display device comprising:

On the element substrate, forming undulations having a plurality of inclined surfaces with an acute angle with respect to the upper surface of the element substrate, spaced apart from each other;
Forming an organic electroluminescent element on the region between the undulating portions, which is a region between the undulating portions of the upper surface of the element substrate, and on each of the inclined surfaces;
Have
In the step of forming the undulations,
Forming a first slope and a second slope facing in a different direction from the first slope;
Forming the organic electroluminescence element,
Forming a first lower electrode, a second lower electrode, and a third lower electrode on the first slope, the second slope, and the region between the undulations, respectively;
A first vapor deposition step of sequentially forming a first light emitting layer and a hole blocking layer on the first lower electrode by vapor deposition from a first vapor deposition direction;
A second vapor deposition step of forming a second light emitting layer on the second lower electrode by vapor deposition from a second vapor deposition direction;
A third vapor deposition step of forming a third light emitting layer on the third lower electrode by vapor deposition from a third vapor deposition direction;
Forming an upper electrode on the first light emitting layer, the second light emitting layer, and the third light emitting layer,
The angle formed by the third deposition direction with the vertical direction of the element substrate is smaller than the angle formed by the first deposition direction with the vertical direction.
The method of manufacturing an organic electroluminescence display device, wherein the first light emitting layer, the second light emitting layer, and the third light emitting layer emit light in different colors.

A substrate,
A first undulation formed on the substrate;
A second undulation formed on the substrate and adjacent to the first undulation;
A region between undulations located between the first undulations and the second undulations;
Of the plurality of slopes of the first undulation portion, a first slope located on the side of the region between the undulation portions,
Of the plurality of slopes of the second undulation part, a second slope located on the side of the region between the undulation parts,
A first lower electrode formed on the first slope;
A second lower electrode formed on the second slope;
A third lower electrode formed on the region between the undulations;
A first light emitting layer covering the first lower electrode;
A second light emitting layer covering the second lower electrode;
A third light emitting layer covering the third lower electrode;
An organic electroluminescence display device comprising: an upper electrode covering at least the first light emitting layer.

The organic electroluminescence display device according to claim 5,
A block layer that covers the first light emitting layer is formed on the first light emitting layer,
The third light emitting layer is formed on the first lower electrode so as to straddle the region between the undulations and the first slope.
The organic electroluminescence display device, wherein the block layer is located between the first light emitting layer and the third light emitting layer.

The organic electroluminescence display device according to claim 6,
Hole transport that covers the first lower electrode, the second lower electrode, and the third lower pole, and that is located over the first slope, the second slope, and the region between the undulations. With layers,
The organic electroluminescence display device, wherein the block layer is a hole block layer that blocks holes injected from the first lower electrode.

The organic electroluminescence display device according to claim 5,
A hole transport layer that covers the first lower electrode, the second lower electrode, and the third lower pole, and is located across the first slope, the second slope, and the region between the undulating portions. An organic electroluminescence display device characterized in that is formed.

The organic electroluminescence display device according to any one of claims 5 to 8,
The upper electrode covers the first light emitting layer, the second light emitting layer, and the third light emitting layer, and straddles the first inclined surface, the second inclined surface, and the region between the undulating portions. An organic electroluminescence display device characterized by being located.

The organic electroluminescence display device according to any one of claims 5 to 9,
An insulating film is disposed under the first undulation and the second undulation,
A first angle formed by the upper surface of the insulating film and the first inclined surface in a region overlapping the first undulating portion, and an upper surface of the insulating film and the second inclined surface formed in a region overlapping the second undulating portion. An organic electroluminescence display device, wherein the second corner is an acute angle.

The organic electroluminescence display device according to any one of claims 5 to 10,
On the side of the first inclined surface of the region between the undulations, a first protrusion that protrudes on the opposite side of the substrate is formed,
On the side of the second inclined surface in the region between the undulations, a second protrusion that protrudes on the opposite side of the substrate is formed,
An organic electroluminescence display device, wherein a third projecting portion projecting to the side opposite to the substrate is formed at an end of the first slope opposite to the region between the undulating portions.

The organic electroluminescence display device according to claim 11,
The first undulation has a third slope different from the first slope,
The third slope is in contact with the end of the first slope;
A fourth lower electrode and a fourth light emitting layer are formed on the third slope,
The organic electroluminescence display device, wherein the third protrusion is positioned between the first light emitting layer and the fourth light emitting layer.

The organic electroluminescence display device according to claim 11 or 12,
The organic electroluminescence display device, wherein the upper electrode covers the first protrusion, the second protrusion, and the third protrusion.