Light-emitting device and laser projection apparatus

A light-emitting device, comprising:

• a substrate, comprising:
• a substrate body;
• at least one connection pattern, disposed on the substrate body and including a conductive portion;
• a plurality of interconnection regions, disposed on the substrate body;
• and
• a plurality of groups of first pads, disposed on the substrate body, the plurality of groups of first pads being electrically connected to the conductive portion through the plurality of interconnection regions, and any one group of the plurality of groups of first pads includes two first pads with different polarities;
• and
• a light-emitting assembly, disposed on the at least one connection pattern, and including:
• at least one package, at least one of a side wall and bottom wall of the at least one package being provided with connection wires;
• a conductive structure, disposed on a side of the at least one package facing the substrate and electrically connected to the connection wires and the conductive portion;
• and
• a plurality of types of laser chips, disposed in the at least one package and electrically connected to the connection wires, the plurality of types of laser chips being configured to emit at least two types of laser beams of different colors, laser chips of a same type of the plurality of types of laser chips being electrically connected to the any one group of first pads.