Light bulb

A light bulb, comprising:

• a base;
• a plurality of optoelectronic units, each optoelectronic unit comprising:
• a light-emitting structure comprising a side surface, a first semiconductor layer, a second semiconductor layer, and a light-emitting layer formed between the first semiconductor layer and the second semiconductor layer;
• and
• a first bonding pad and a second bonding pad formed on a top side of the light-emitting structure;
• a plurality of conductive elements spaced apart from each other, wherein each conductive element comprises a bottom surface directly connecting the first bonding pad of one optoelectronic unit and the second bonding pad of another optoelectronic unit without covering the side surfaces of the one and another optoelectronic units, and a top surface opposite to the bottom surface;
• a transparent structure continuously covering the plurality of optoelectronic units and the plurality of conductive elements without covering the top surface of the each conductive element;
• and
• a light tube configured to accommodate the plurality of optoelectronic units, the plurality of conductive elements, and the transparent structure, and comprising a plurality of openings facing a same direction, the light tube being connected to the base.