| 摘要 |
<p>The present invention provides a loadless 4T-SRAM configured from a vertical transistor SGT, the loadless 4T-SRAM having a small SRAM cell area. A stick-type memory cell configured by using four MOS transistors, wherein: the MOS transistors are SGTs which are formed on an SOI substrate and of which the drain, gate, and source are arranged in a perpendicular direction; the gate of an access transistor functioning as a wide line is shared by multiple cells that are adjacent to one another in the horizontal direction; and one contact to the wide line is formed per multiple cells. As a consequence, it is possible to provide a CMOS-type loadless 4T-SRAM having an extremely small memory cell area.</p> |
