Light emitting diode with two alternative mounting sides for mounting on circuit board

A light emitting diode (LED) comprising:

• a substrate;
• a first electrode and a second electrode sandwiching the substrate therebetween;
• an LED chip electrically connected to the first electrode and the second electrode, respectively;
• and
• a reflector covering a top surface of the substrate, a top surface of the first electrode and a top surface of the second electrode,
• wherein an electrically conductive first retaining wall is provided on an edge of the first electrode with the first electrode and the first retaining wall integrally formed as a single monolithic piece, a second retaining wall is provided on an edge of the second electrode with the second electrode and the second retaining wall integrally formed as a single monolithic piece, the first retaining wall and the second retaining wall are located at a same side of the LED, and side faces of the first electrode and the second electrode are exposed from the reflector;
• wherein outer surfaces of the first retaining wall and the second retaining wall are exposed out of the reflector, respectively;
• and
• wherein the outer surface of the first retaining wall is coplanar with the corresponding side surface of the first electrode, and the outer surface of the second retaining wall is coplanar with the corresponding side surface of the second electrode.

A circuit board assembly comprising:

• a circuit board;
• and
• a light-emitting diode (LED), comprising:
• a substrate;
• a first electrode and a second electrode sandwiching the substrate therebetween;
• an LED chip electrically connected to the first electrode and the second electrode;
• a reflector located on the first electrode and the second electrode and surrounding the LED chip;
• a first retaining wall mounted on an edge of the first electrode, the first retaining wall being made of electrically conductive material;
• and
• a second retaining wall mounted on an edge of the second electrode, the second retaining wall being made of electrically conductive material;
• the first retaining wall and the second retaining wall being at a same side of the LED, outer faces of the first retaining wall and the second retaining wall being exposed out of the reflector and facing and electrically connected to the circuit board;
• wherein the outer surface of the first retaining wall is coplanar with a corresponding side surface of the first electrode, and the outer surface of the second retaining wall is coplanar with a corresponding side surface of the second electrode.