A one transistor (1T-RAM) bit cell and method for manufacture are
provided. A metal-insulator-metal (MIM) capacitor structure and method of
manufacturing it in an integrated process that includes a finFET
transistor for the 1T-RAM bit cell is provided. In some embodiments, the
finFET transistor and MIM capacitor are formed in a memory region and an
asymmetric processing method is disclosed, which allows planar MOSFET
transistors to be formed in another region of a single device. In some
embodiments, the 1T-RAM cell and additional transistors may be combined
to form a macro cell, multiple macro cells may form an integrated
circuit. The MIM capacitors may include nanoparticles or nanostructures
to increase the effective capacitance. The finFET transistors may be
formed over an insulator. The MIM capacitors may be formed in interlevel
insulator layers above the substrate. The process provided to manufacture
the structure may advantageously use conventional photomasks.