Ultraviolet (uv) light source and method of manufacturing the same

An ultraviolet (UV) light source comprising:

• an upper housing comprising a plate portion and a sidewall protruding from the plate portion;
• a substrate coupled to the upper housing;
• a light-emitting diode (LED) chip on the substrate and comprising a transparent layer;
• a waterproof coating layer on the substrate and at least a portion of the LED chip;
• and
• a first waterproof layer between the waterproof coating layer and the upper housing,
• wherein at least a portion of an upper surface of the transparent layer is exposed from the waterproof coating layer, such that the LED chip is configured to generate UV light that is directly transferred to a sterilization-target fluid without passing through the waterproof coating layer.

An ultraviolet (UV) light source comprising:

• an upper housing comprising a plate portion and a sidewall protruding from the plate portion;
• a substrate coupled to the upper housing;
• a light-emitting diode (LED) package mounted on an upper surface of the substrate and comprising an LED chip configured to generate UV light;
• a waterproof coating layer on at least a portion of the upper surface of the substrate;
• a first waterproof layer between the substrate and the upper housing;
• and
• a connector connected to the substrate and providing a path for drive power to the LED chip,
• wherein the LED package further comprises:
• a base layer comprising a plate portion, which is overlapped with a lower surface of the LED chip, and a dam portion, which is overlapped with a lateral surface of the LED chip;
• and
• a transparent layer on the dam portion of the base layer, the transparent layer comprising a lower surface facing the LED chip, an upper surface opposite to the lower surface of the transparent layer, and a lateral surface connecting the upper surface of the transparent layer to the lower surface of the transparent layer.