Light-emitting device and manufacturing method thereof
A light-emitting device includes a substrate, a light-emitting component, a translucent layer, an adhesive layer, a reflective layer and translucent encapsulant. The light-emitting component is disposed on the substrate. The adhesive layer is formed between the light-emitting component and the translucent layer. The reflective layer is formed above the substrate and covering a lateral surface of the light-emitting component, a lateral surface of the adhesive layer and a lateral surface of the translucent layer. The translucent encapsulant is formed on the substrate and encapsulating the light-emitting component, the translucent layer and the reflective layer.
1. A light-emitting device, comprises:
a substrate;
a light-emitting component coupled to the substrate;
a wavelength conversion layer comprising a high-density phosphor layer and a low-density phosphor layer;
an adhesive layer adhering the wavelength conversion layer directly to an upper surface of the light-emitting component and covering a portion of a lateral surface of the light-emitting component, wherein the high-density phosphor layer faces to the upper surface of the light-emitting component;
a reflective layer formed above the substrate and covering the light-emitting component, the adhesive layer and the wavelength conversion layer to expose an upper surface of the wavelength conversion layer, wherein a curved surface of the reflective layer is inclined to the lateral surface of the light-emitting component and reflects a light emitted from the light-emitting component back into the high-density phosphor layer; and
a dome-shaped lens layer formed on the substrate and encapsulating the light-emitting component, the wavelength conversion layer, the adhesive layer and the reflective layer.
2. The light-emitting device according to claim 1 , wherein the dome-shaped lens layer encapsulates a lateral surface of an electrode of the light-emitting component.
3. The light-emitting device according to claim 1 , wherein the dome-shaped lens layer is spaced from the substrate.
4. The light-emitting device according to claim 1 , wherein the light-emitting device has a flat lateral surface comprising the dome-shaped lens layer and the substrate.
5. The light-emitting device according to claim 3 , wherein the reflective layer has a lower portion disposed between the dome-shaped lens and the substrate.
6. The light-emitting device according to claim 1 , wherein the reflective layer is spaced from the substrate.
7. The light-emitting device according to claim 5 , wherein the light-emitting device has a flat lateral surface comprising the dome-shaped lens layer, the reflective layer and the substrate.
8. The light-emitting device according to claim 6 , wherein the light-emitting component has a body and electrodes disposed on a bottom surface thereof, and a bottom surface of the reflective layer is not lower than the bottom surface of the body of the light-emitting component.
9. The light-emitting device according to claim 1 , wherein the dome-shaped lens layer comprises resin containing phosphor particles.
10. The light-emitting device according to claim 1 , wherein a thickness of the low-density phosphor layer is larger than a thickness of the high-density phosphor layer.
11. The light-emitting device according to claim 1 , wherein an upper surface of the reflective layer and the upper surface of the wavelength conversion layer are coplanar.