Light-emitting device, manufacturing method thereof and display module using the same

1. A light-emitting device, comprising:

a carrier comprising a plurality of side surfaces, an insulating layer, an upper conductive layer arranged on the insulating layer, a lower conductive layer arranged under the insulating layer, and a plurality of conductive through holes arranged between and connected to the upper conductive layer and the lower conductive layer;

a plurality of light-emitting units arranged on and electrically connected to the upper conductive layer; and

a transparent unit fully covering the plurality of light-emitting units, and exposing the lower conductive layer;

wherein each conductive through hole is exposed from and sandwiched by two adjacent ones of the plurality of side surfaces.

2. The light-emitting device according to claim 1 , wherein the plurality of conductive through holes is located at corners of the insulating layer.

3. The light-emitting device according to claim 1 , wherein the insulating layer and the transparent unit have two or more surfaces parallel to each other.

4. The light-emitting device according to claim 1 , wherein the transparent unit is arranged to laterally cover the plurality of conductive through holes.

5. The light-emitting device according to claim 1 , wherein the plurality of light-emitting units is configured to emit blue light, red light, and green light.

6. The light-emitting device according to claim 1 , wherein the plurality of light-emitting units is configured to emit a single light.

7. The light-emitting device according to claim 1 , further comprising a wavelength conversion material covering one of the plurality of light-emitting units.

8. The light-emitting device according to claim 1 , further comprising a connecting structure between the plurality of light-emitting units and the upper conductive layer, wherein the connecting structure comprises an electrical connecting portion and a protection portion surrounding the electrical connecting portions.

9. The light-emitting device according to claim 1 , wherein the plurality of light-emitting units and the plurality of conductive through holes are not overlapped with each other in a top view.

10. The light-emitting device according to claim 1 , wherein the plurality of light-emitting units is arranged in a straight line.

11. The light-emitting device according to claim 1 , wherein the upper conductive layer and the lower conductive layer are solely connected to each other by the plurality of conductive through holes.

12. The light-emitting device according to claim 1 , wherein the lower conductive layer comprises a first pad, a second pad, a third pad, and a fourth pad which has a shape different from the first pad.

13. The light-emitting device according to claim 12 , wherein the first pad has an area larger than any of the plurality of light-emitting units in a bottom view.

14. The light-emitting device according to claim 1 , wherein the upper conductive layer comprises a plurality of separate parts which has more quantity than the plurality of light-emitting units.

15. The light-emitting device according to claim 1 , wherein the carrier further comprises a light-absorbing layer arranged on a surface thereof.

16. The light-emitting device according to claim 1 , wherein the transparent unit comprises resin, ceramic, glass or the combination thereof.

17. The light-emitting device according to claim 1 , wherein each of the plurality of light-emitting units has a shape of rectangle in a top view.

18. The light-emitting device according to claim 1 , wherein the plurality of light-emitting units is configured to emit blue light or UV light.