Electronical device

An electronic device comprising:

• a substrate;
• a first semiconductor layer disposed on the substrate and comprising a group III-V semiconductor compound;
• a second semiconductor layer covering at least a part of the first semiconductor layer and comprising the group III-V semiconductor compound;
• a source electrode and a drain electrode disposed on the first semiconductor layer and spaced apart horizontally from each other;
• a gate electrode disposed on the second semiconductor layer and between the source electrode and the drain electrode;
• and
• a field plate contacting the source electrode and extending towards the drain electrode, wherein as the field plate becomes closer to the drain electrode, the field plate becomes farther away from the substrate,
• wherein the field plate comprises a first horizontal part contacting the source electrode, a second horizontal part spaced apart from the first horizontal part vertically and horizontally, and a connection part connecting the first and second horizontal parts, and
• wherein the connection part comprises a third horizontal part disposed between the first and second horizontal parts, a first vertical part connecting the first and third horizontal parts, and a second vertical part connecting the second and third horizontal parts.