Neural device having via-hole connection and using at least one nano-wire

A neural device comprising:

• a nano-wire formed on a base which is formed on a first surface of a substrate;
• and
• an electrode pad formed on a second surface different from the first surface of the substrate, and configured to output an electrical signal gained from a neural fiber through the nano-wire or apply a signal for an electric stimulus to the nano-wire,
• wherein the second surface is a surface having an angle of 170° to 180° between a normal vector of the second surface and a normal vector of the first surface, and the nano-wire and the electrode pad are connected to each other using a through via-hole, and
• wherein the electrode pad is connected to the outside of the neural device through a touch ball.