Patent ID: 7579657

Claim:
A semiconductor device with multiple channels comprising: a semiconductor substrate; a pair of conductive regions spaced apart from each other on the semiconductor substrate and having sidewalls that face to each other; a lower insulation layer disposed on the semiconductor substrate between the conductive regions; a channel layer in the form of at least two bridges contacting the lower insulation layer, the at least two bridges being spaced apart from each other in a first direction and connecting the conductive regions with each other in a second direction that is at an angle relative to the first direction; a gate insulation layer on the channel layer; a gate electrode layer on the gate insulation layer and surrounding a portion of the channel layer; and a device isolation layer defining an active region including the conductive regions and the channel layer and is connected with the lower insulation layer in the first direction, wherein the lower insulation layer is separated from the device isolation layer in the second direction by the conductive regions.