Image display element
An image display element includes pixels, a driving circuit substrate, a microlens, and an inter-pixel partition. The pixels are disposed in an array, each including a micro light emitting element. The driving circuit substrate includes a driving circuit configured to supply a current to the micro light emitting element and cause the micro light emitting element to emit light. The microlens is disposed for each of the pixels. The inter-pixel partition is disposed between the pixels and extends from a light emitting surface of the micro light emitting element to the microlens.
1. An image display element comprising:
pixels disposed in an array, each of the pixels including a micro light emitting element;
a driving circuit substrate including a driving circuit configured to supply a current to the micro light emitting element and to cause the micro light emitting element to emit light;
a microlens disposed for each of the pixels; and
an inter-pixel partition disposed between the pixels and extending from a light emitting surface of the micro light emitting element to the microlens,
wherein an outer edge of each of the microlenses is held by a microlens holder, and
the microlenses of the pixels are connected to each other and integrated by the microlens holder.
2. The image display element according to claim 1 ,
wherein the micro light emitting element, the inter-pixel partition, and the microlens are disposed in this order from a driving circuit substrate side, and
the micro light emitting element emits light in a direction opposite the driving circuit substrate.
3. The image display element according to claim 1 ,
wherein a side surface of the inter-pixel partition reflects the light emitted by the micro light emitting element.
4. The image display element according to claim 1 ,
wherein an optical path, surrounded by the micro light emitting element, the inter-pixel partition, and the microlens, comprises a space.
5. The image display element according to claim 4 ,
wherein the microlens has a convex shape protruding toward a micro light emitting element side.
6. The image display element according to claim 5 ,
wherein a microlens array including the microlens is mechanically held independently from the driving circuit substrate.
7. The image display element according to claim 1 ,
wherein an optical path, surrounded by the micro light emitting element, the inter-pixel partition, and the microlens, is filled with a transparent material.
8. The image display element according to claim 7 ,
wherein the microlens has a planar shape on a micro light emitting element side.
9. The image display element according to claim 1 ,
wherein each of the pixels further includes a plurality of micro light emitting elements, including the micro light emitting element, configured to emit light at mutually different wavelengths, and each of the pixels includes a single one of the microlenses.
10. The image display element according to claim 1 ,
wherein each of the pixel includes pixels further includes:
a plurality of micro light emitting elements, including the micro light emitting element, configured to emit light at mutually different wavelengths, and
a corresponding one of the microlenses for each of the plurality of micro light emitting elements.
11. An image display element comprising:
pixels disposed in an array, each of the pixels including a micro light emitting element;
a driving circuit substrate including a driving circuit configured to supply a current to the micro light emitting element and to cause the micro light emitting element to emit light;
a microlens disposed for each of the pixels; and
a transparent portion disposed between the micro light emitting element and the microlens, wherein
the transparent portion is divided for each of the microlenses, and a space is provided between transparent portions that are adjacent to each other,
an outer edge of each of the microlenses is held by a microlens holder, and
the microlenses of the pixels are connected to each other and integrated by the microlens holder.
12. The image display element according to claim 11 ,
wherein the micro light emitting element, the transparent portion, and the microlens are disposed in this order from a driving circuit substrate side, and
the micro light emitting element emits light in a direction opposite the driving circuit substrate.
13. The image display element according to claim 11 ,
wherein an inter-pixel partition is provided between the transparent portions on a side in contact with an inter-light-emitting-element partition provided between the micro light emitting elements.
14. The image display element according to claim 13 ,
wherein a height of the inter-pixel partition is no less than L×tan θc,
L is a length of each of the pixels in a horizontal direction, and
θc is a critical total reflection angle of the transparent portion.
15. The image display element according to claim 11 ,
wherein a reflective film is provided, at a sidewall of the transparent portion, on a side in contact with an inter-light-emitting-element partition provided between the micro light emitting elements.
16. The image display element according to claim 11 ,
wherein the pixels have a one-to-one correspondence to the microlenses, and a surface of the microlens on a micro light emitting element side is a plane.
17. The image display element according to claim 11 ,
wherein a surface of the microlens holder in a light emission direction is a plane.
18. The image display element according to claim 11 ,
wherein each of the pixels further includes a plurality of micro light emitting elements, including the micro light emitting element, configured to emit light at mutually different wavelengths, and each of the pixels includes a single one of the microlenses.
19. The image display element according to claim 11 ,
wherein each of the pixels further includes:
a plurality of micro light emitting elements, including the micro light emitting element, configured to emit light at mutually different wavelengths, and
a corresponding one of the microlenses for each of the plurality of micro light emitting elements.