Light emitting device and optical transceiver module

Abstract

A light-emitting device includes a first substrate, a first light-emitting element, a second substrate, a second light-emitting element, a first lens, and a second lens. The first light-emitting elements are disposed on the first substrate, with a first gap between any two adjacent first light-emitting elements. The second substrate is disposed on the first light-emitting elements. The second light-emitting elements are disposed on the second substrate, with a second gap between any two adjacent second light-emitting elements. In the normal direction of the first substrate, the second light-emitting elements overlap with the first gap, and the first light-emitting elements overlap with the second gap. The first lens is located between the first substrate and the second substrate, and in the normal direction of the first substrate, the first lens overlaps with the first light-emitting element. The second lens is located on the second light-emitting elements, and in the normal direction of the first substrate, the second lens overlaps with the second light-emitting element.

Claims

1. A light-emitting device, comprising: First substrate; A plurality of first light-emitting elements are disposed on the first substrate, and a first interval is provided between any two adjacent first light-emitting elements; A second substrate is disposed on the first light-emitting elements; a plurality of second light-emitting elements are disposed on the second substrate, and a second gap is provided between any two adjacent second light-emitting elements, wherein the second light-emitting elements overlap with the first gaps in a normal direction of the first substrate, and the first light-emitting elements overlap with the second gaps; a plurality of first lenses are located between the first substrate and the second substrate, wherein the first lenses overlap with the first light-emitting elements in the normal direction of the first substrate; and a plurality of second lenses are located on the second light-emitting elements, wherein the second lenses overlap with the second light-emitting elements in the normal direction of the first substrate.

2. The light-emitting device as claimed in claim 1, wherein the light-emitting device has a plurality of pixel units arranged in an array, and the first light-emitting elements and the second light-emitting elements are respectively disposed in the pixel units, wherein there is a pixel spacing between the centers of any two adjacent pixel units, and the ratio of the diameter of each first lens to the pixel spacing and the ratio of the diameter of each second lens to the pixel spacing are not greater than 1.

3. The light-emitting device as described in claim 1 further includes: Multiple light-shielding members are disposed on the surface of the second substrate facing the first substrate, wherein the light-shielding members overlap with the second light-emitting elements respectively in the normal direction of the first substrate.

4. The light-emitting device as described in claim 1, further comprising: Multiple electrical connectors are disposed between the first substrate and the second substrate and are alternately arranged with the first light-emitting elements. The first substrate has multiple first conductive vias, and the second substrate has multiple second conductive vias. The second conductive vias are electrically connected to the first conductive vias via the electrical connectors, and the second conductive vias are electrically connected to the second light-emitting elements.

5. The light-emitting device as claimed in claim 4, wherein the first substrate further has a plurality of third conductive vias, and the third conductive vias are respectively electrically connected to the first light-emitting elements.

6. The light-emitting device as claimed in claim 1, wherein the first lenses are disposed on the first substrate and respectively cover the first light-emitting elements, and the second lenses are disposed on the second substrate and respectively cover the second light-emitting elements.

7. The light-emitting device as described in claim 6 further includes: Multiple sub-lenses are disposed on the second substrate and arranged alternately with the second lenses.

8. The light-emitting device as described in claim 1, further comprising: A third substrate is disposed on the second light-emitting elements, wherein the second lenses are disposed on the surface of the third substrate facing the second substrate, and the first lenses are disposed on the surface of the second substrate facing the first substrate.

9. The light-emitting device as described in claim 8, further comprising: Multiple sub-lenses are disposed on the surface of the third substrate facing the second substrate and are arranged alternately with the second lenses.

10. An optical transmission module, comprising: The light-emitting device as described in any one of claims 1 to 9; And a plurality of optical fiber elements are disposed on the light-emitting device, wherein, in the normal direction of the first substrate, the optical fiber elements overlap with the first lenses and the second lenses respectively.

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