Semi-conductor device having double-gate and method for setting synapse weight of target semi-conductor device within neural network

A method for setting a synapse weight of a target semiconductor device in a synapse array including a plurality of semiconductor devices, the method comprising:

• controlling a potential difference between a first gate and a second gate of the target semiconductor device to form an electric field for tunneling of electric charge in the target semiconductor device that has a preset weight through tunneling;
• controlling a voltage of a second gate of another semiconductor device to prevent tunneling of electric charge in the other semiconductor device, the another semiconductor device sharing a first gate line between the first gate of the target semiconductor device and a control circuit;
• and
• controlling a voltage of a first gate of other semiconductor device to prevent tunneling of electric charge in the another semiconductor device, the other semiconductor device sharing a second gate line between the second gate of the target semiconductor device and the control circuit.