Light-emitting device and light-emitting apparatus comprising the same
The present application discloses a light-emitting device comprising a light-emitting unit and a flexible carrier supporting the light-emitting unit. The light-emitting unit comprises a LED chip, a first reflective layer on the LED chip and an optical diffusion layer formed between the first reflective layer and the LED chip.
1. A method of manufacturing a light-emitting device, comprising:
providing a carrier;
providing a plurality of light-emitting packages arranged on and electrically connected to the carrier, wherein the plurality of light-emitting packages comprises a first light-emitting package and a second light-emitting package, the first light-emitting package comprises a first light-emitting chip and a first encapsulating layer covering the first light-emitting chip, and the second light-emitting package comprises a second light-emitting chip and a second encapsulating layer covering the second light-emitting chip and separated from the first encapsulating layer;
providing a covering sheet separated from the plurality of light-emitting packages, wherein the covering sheet is uncured and has a uniform thickness;
arranging the covering sheet, which is uncured, to cover the plurality of light-emitting packages; and
curing the covering sheet covering the plurality of light-emitting packages,
wherein, after the curing step, the covering sheet remains to directly contact the carrier, and has a topmost surface which is substantially flat across the plurality of light-emitting packages.
2. The method of claim 1 , further comprising a step of arranging an adhesive layer under the carrier.
3. The method of claim 1 , wherein the first light-emitting chip has a first lateral surface and a first top surface, the first encapsulating layer directly contacts the first lateral surface and the first top surface.
4. The method of claim 1 , wherein the covering sheet directly contacts the first encapsulating layer and the second encapsulating layer without reaching the first light-emitting chip.
5. The method of claim 1 , wherein the first encapsulating layer includes a wavelength conversion layer.
6. The method of claim 1 , wherein the first encapsulating layer includes a light-transmitting material.
7. The method of claim 1 , wherein the carrier comprises a flexible material.
8. The method of claim 1 , wherein the first encapsulating layer has a first side surface, the first side surface is substantially perpendicular to the carrier.
9. The method of claim 1 , wherein the covering sheet includes silicone or epoxy.
10. The method of claim 1 , wherein the first light-emitting package and the second light-emitting package are separated from each other by a gap, and the covering sheet is configured to fill into the gap and directly contact the carrier, the first encapsulating layer, and the second encapsulating layer after the curing step.
11. The method of claim 1 , wherein, in the step of providing the covering sheet, the covering sheet is configured to substantially contact the first light-emitting package and the second light-emitting package at the same time.
12. The method of claim 1 , wherein, after the curing step, the covering sheet has a uniform height measured from the carrier.