Micro light-emitting device apparatus

Abstract

A miniature light-emitting element device includes a circuit substrate, a pixel structure layer, a plurality of first reflective structures, and a plurality of optical structures. The pixel structure layer is disposed on the circuit substrate and includes a plurality of miniature light-emitting elements. The first reflective structures are disposed on the side of the pixel structure layer relatively away from the circuit substrate and define a plurality of accommodating spaces with the pixel structure layer. Each accommodating space exposes a light-emitting surface of each miniature light-emitting element. The accommodating spaces include a plurality of first accommodating spaces and a plurality of second accommodating spaces. The optical structures are respectively disposed in the first accommodating spaces. Each first reflective structure has a first height relative to the light-emitting surface, and each optical structure has a second height relative to the light-emitting surface, wherein the second height is greater than the first height.

Claims

1. A miniature light-emitting element device, comprising: A circuit board; A pixel structure layer is disposed on the circuit board and includes multiple micro light-emitting elements; A plurality of first reflective structures are disposed on the side of the pixel structure layer that is relatively far from the circuit substrate, and define a plurality of accommodating spaces with the pixel structure layer. Each accommodating space exposes a light-emitting surface of each micro light-emitting element, and the accommodating spaces include a plurality of first accommodating spaces and a plurality of second accommodating spaces; a plurality of optical structures are disposed in the plurality of first accommodating spaces, wherein each first reflective structure has a first height relative to the light-emitting surface, and each optical structure has a second height relative to the light-emitting surface, and the second height is greater than the first height; and a first filter layer surrounds each optical structure, protruding from a peripheral surface of the first reflective structures, and contacts the peripheral surface of each optical structure.

2. The micro light-emitting element device as described in claim 1, further comprising: Multiple color conversion layers are respectively configured in these second accommodating spaces.

3. The micro light-emitting element device as claimed in claim 2, wherein each color conversion layer has a third height relative to the light-emitting surface, and the second height is greater than the third height.

4. The micro light-emitting element device as claimed in claim 3, wherein the first filter layer is disposed on the color conversion layers.

5. The micro light-emitting element device as claimed in claim 4, wherein the first filter layer has a fourth height relative to the light-emitting surface, and the fourth height is greater than or equal to the second height.

6. The micro light-emitting element device as claimed in claim 4, wherein the first filter layer exposes a top surface of each optical structure relatively far from the circuit board.

7. The micro light-emitting element device as claimed in claim 5, further comprising: A second filter layer is disposed on the color conversion layers and located between the first filter layer and the color conversion layers, wherein the second filter layer surrounds the surrounding surface of each optical structure.

8. The micro light-emitting element device as claimed in claim 7, wherein the second filter layer has a fifth height relative to the light-emitting surface, and the second height of the optical structure is between the fourth height and the fifth height.

9. The micro light-emitting element device as claimed in claim 1, wherein each of the optical structures has a top surface relatively distant from the circuit board, and the top surface is a plane.

10. The micro light-emitting element device as claimed in claim 1, wherein each of the optical structures has a top surface relatively distant from the circuit board, and the top surface is a concave surface.

11. The micro light-emitting element device as claimed in claim 1, wherein the ratio of the second height to the first height is greater than 1.

12. The micro light-emitting element device as claimed in claim 1, wherein each of the optical structures includes a filter material or a color conversion material.

13. The micro light-emitting element device as claimed in claim 1, wherein each of the optical structures has a maximum width, and the light-emitting surface of each of the micro light-emitting elements has a light-emitting width, and the maximum width is greater than the light-emitting width.

14. The micro light-emitting element device as claimed in claim 1, wherein each of the optical structures has a maximum width, and adjacent micro light-emitting elements have a spacing in an extension direction parallel to the circuit substrate, wherein the maximum width of each optical structure is less than or equal to the spacing.

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