Patent ID: 8829548

Claim:
A light emitting device package comprising: an undoped semiconductor substrate having first and second surfaces opposed to each other; first and second conductive vias penetrating the undoped semiconductor substrate such that they connect the first and second surfaces; a light emitting device mounted on one region of the first surface and electrically connected to the first and second conductive vias, respectively; a bi-directional Zener diode formed by doping an impurity on the second surface of the undoped semiconductor substrate and having a Zener breakdown voltage in both directions; first and second external electrodes disposed on the second surface of the undoped semiconductor substrate such that they connect the first and second conductive vias to both ends of the bi-directional Zener diode region, respectively; and first and second surface electrodes disposed on the first surface of the undoped semiconductor substrate and electrically connecting the light emitting device to each of the first and second conductive vias, wherein each of the first and second conductive vias are formed of sequentially laminated layers of metals, wherein the first surface of the undoped semiconductor substrate includes a recess portion having sloped side walls therein, and the first and second surface electrodes extend along the side walls of the recess portion, and wherein each of the first and second conductive vias is formed of layers of aluminum (Al), titanium (Ti), platinum (Pt), and titanium (Ti) that are sequentially laminated in the order Al/Ti/Pt/Ti.