Illumination device
An illumination device includes a supporting base, and a light-emitting element inserted in the supporting base. The light-emitting element includes a substrate having a supporting surface and a side surface, a light-emitting chip disposed on the supporting surface, and a first wavelength conversion layer covering the light-emitting chip and only a portion of the supporting surface without covering the side surface.
1. An illumination device, comprising:
a supporting base;
a support;
a first light-emitting element inclined to the supporting base and inserted into a space sandwiched by the supporting base and the support, the first light-emitting element comprising:
a substrate having a support surface and a side surface
a first LED structure disposed on the support surface;
a first connecting conductor disposed on the support surface and extended to an edge of the substrate to form a contact sheet; and
a first wavelength conversion layer covering the first LED structure and only a portion of the support surface without covering the side surface;
a bonding layer disposed between the support and the first light emitting element; and
a second light-emitting element inclined to the supporting base;
wherein the first light-emitting element and the second light-emitting element are arranged to point to different directions.
2. The illumination device of claim 1 , wherein the first LED structure is coupled to the first connecting conductor by a wire.
3. The illumination device of claim 1 , wherein the first light-emitting element further comprises a second connecting conductor formed on the support surface, the first connecting conductor and the second connecting conductor are respectively disposed on opposite sides of the substrate.
4. The illumination device of claim 1 , wherein the first light emitting element is electrically coupled to the supporting base.
5. The illumination device of claim 1 , wherein an angle between the first light emitting element and the supporting base ranges from 30 degrees to 150 degrees.
6. The illumination device of claim 1 , wherein the first light-emitting element further comprises a main surface opposite to the support surface, and a second wavelength conversion layer covering the main surface.
7. The illumination device of claim 6 , wherein the first wavelength conversion layer and the second wavelength conversion layer have different areas.
8. The illumination device of claim 6 , wherein the second wavelength conversion layer does not cover the side surface.
9. The illumination device of claim 1 , further comprising a lamp housing enclosing the first light-emitting element and the second light-emitting element.
10. The illumination device of claim 2 , wherein the wire is not extended beyond the substrate.
11. The illumination device of claim 1 , wherein the first light-emitting element further comprises a main surface opposite to the support surface, and the bonding layer is disposed on the main surface.
12. The illumination device of claim 1 , wherein the first connecting conductor and the bonding layer have different areas.
13. The illumination device of claim 1 , wherein the first wavelength conversion layer has a portion directly contacted to the support surface.
14. The illumination device of claim 1 , wherein the first light-emitting element has a second LED structure disposed on the support surface, the first wavelength conversion layer fully covering the first LED structure, the second LED structure, and a gap between the first LED structure and the second LED structure.
15. The illumination device of claim 1 , wherein the supporting base, the support, and the substrate are partially overlapped with each other in a cross-sectional view.
16. The illumination device of claim 1 , wherein the second light-emitting element comprises a second substrate, and a plurality of third LED structures disposed on the second substrate.
17. The illumination device of claim 2 , wherein the wire is fully covered by the first wavelength conversion layer.