Patent ID: 7847322
Filing Date: 2010-12-07
Classification: H01L

Abstract:
1. A semiconductor memory device comprising: a semiconductor substrate; a first dielectric film provided on the semiconductor substrate; two Fins provided on the first dielectric film and made of a semiconductor material; a second dielectric film provided on first side surfaces among side surfaces of the two Fins, the first side surfaces being inner side surfaces among side surfaces of the two Fins so as to oppose each other; a third dielectric film provided on second side surfaces among side surfaces of the two Fins, the second side surfaces being outer side surfaces among side surfaces of the two Fins; a gate electrode provided between the first side surfaces of the two Fins and provided on the first side surfaces via the second dielectric film; and at least a plate electrode provided on the second side surfaces of the two Fins via the third dielectric film, wherein the gate electrode forms transistors on the first side surfaces and is not provided on the second side surfaces, and the plate electrodes form capacitors on the second side surfaces and are not provided on the first side surfaces, wherein the two Fins, the gate electrode, and the plate electrodes are included in one memory cell.