Semiconductor device

摘要

A semiconductor device is an SOI type field effect transistor in which an active region is isolated and insulated by a transistor for isolation. A contact hole for isolation is formed in a gate dielectric thin film for isolation between a gate electrode of the transistor for isolation and a channel region below the gate electrode. In the semiconductor device thus structured, surplus carriers produced in a channel region below a transfer gate electrode are drawn through channel region and isolation contact hole into isolation gate electrode, thereby preventing such a disadvantageous phenomenon as a kink effect or the like due to a floating-substrate effect.