Patent ID: 9065028
Filing Date: 2015-06-23
Classification: H01L

Abstract:
1. A light emitting diode (LED) package comprising: a substrate comprising a top surface and a bottom surface at opposite sides thereof; a first electrode and a second electrode spaced from the first electrode, the first and second electrodes respectively penetrating downwardly through the substrate from the top surface to the bottom surface, top ends of the first and second electrodes being exposed at the top surface of the substrate, and bottom ends of the first and second electrodes being exposed at the bottom surface of the substrate; an LED die mounted on the top surface of the substrate and being electrically connected to the first and second electrodes by flip-chip technology; an encapsulation layer formed on the top surface of the substrate to encapsulate the LED die therein; and a moisture barrier layer attached on the bottom thereof to cover at least a part of a joint of the first electrode and/or the second electrode and the substrate; wherein each of the first and second electrodes has a top face and a bottom face at opposite sides thereof, the top faces of the first and second electrodes being exposed at the top surface of the substrate, the bottom faces of the first and second electrodes being exposed at the bottom surface of the substrate, and the top faces of the first and second electrodes being coplanar with the top surface of the substrate; and wherein each of the first and second electrodes comprises an elongated head portion and a tapered branch portion extending downwardly from a central region of the bottom of the head portion, and a first step formed between the elongated head portion and the tapered branch portion of the first electrode and a second step formed between the elongated head portion and the tapered branch portion of the second electrode are respectively embedded in the substrate.