Light-emitting element and display device
AssigneeJapan Display Inc.
InventorNobuto MANAGAKI
Life of this patent
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Abstract
Provided is a light-emitting element including a first electrode, a partition wall covering an edge portion of the first electrode, a light-confining layer in contact with a side surface of the partition wall and the first electrode, an electroluminescence layer over the first electrode and in contact with the first electrode and the light-confining layer, and a second electrode over the electroluminescence layer. A refractive index of the light-confining layer is lower than a refractive index of the electroluminescence layer.
Claims18
A light-emitting element comprising:
- a first electrode;
- a partition wall covering an edge portion of the first electrode;
- a light-confining layer in contact with a side surface of the partition wall and the first electrode;
- an electroluminescence layer over the first electrode and in contact with the first electrode and the light-confining layer;
- and
- a second electrode over the electroluminescence layer,
- wherein a refractive index of the light-confining layer is lower than a refractive index of the electroluminescence layer.
A display device comprising:
- a first light-emitting element;
- a second light-emitting element adjacent to the first light-emitting element;
- and
- a partition wall between the first light-emitting element and the second light-emitting element each comprising:
- a first electrode having an edge portion covered by the partition wall;
- a light-confining layer in contact with a side surface of the partition wall and the first electrode;
- an electroluminescence layer over the first electrode and in contact with the first electrode and the light-confining layer;
- and
- a second electrode over the electroluminescence layer,
- wherein a refractive index of the light-confining layer is lower than a refractive index of the electroluminescence layer in each of the first light-emitting element and the second light-emitting element.
A light-emitting element comprising:
- a first electrode;
- a partition wall covering an edge portion of the first electrode;
- a first light-confining layer covering at least a part of a side surface of the partition wall;
- a second light-confining layer between and in contact with the first light-confining layer and the partition wall;
- an electroluminescence layer over the first electrode and in contact with the first electrode and the first light-confining layer;
- and
- a second electrode over the electroluminescence layer,
- wherein a refractive index of the second light-confining layer is lower than a refractive index of the electroluminescence layer and a refractive index of the first light-confining layer.
A display device comprising:
- a first light-emitting element;
- a second light-emitting element adjacent to the first light-emitting element;
- and
- a partition wall between the first light-emitting element and the second light-emitting element each comprising:
- a first electrode having an edge portion covered by the partition wall;
- a first light-confining layer covering at least a part of a side surface of the partition wall;
- a second light-confining layer between and in contact with the first light-confining layer and the partition wall;
- an electroluminescence layer over the first electrode and in contact with the first electrode and the first light-confining layer;
- and
- a second electrode over the electroluminescence layer,
- wherein a refractive index of the second light-confining layer is lower than a refractive index of the electroluminescence layer and a refractive index of the first light-confining layer.
Dependencies are inferred from the claim text.