In this photograph, it is possible to confirm that the SOI layer is very thin by using the gate metal as a comparison. We developed the advanced fabrication technology and process technology that makes this possible. Expansion into Digital Devices We will verify the fundamental characteristics that would result if we use this transistor in a digital CMOS device. Figure 3 compares the power supply voltage dependency of the minimum operating cycle time for a processor manufactured using this process with that of an equivalent device. Compared to bulk CMOS devices, SOI-CMOS devices can have reduced power supply voltage while maintaining operating performance, and can greatly reduce power consumption. The reduction of junction capacitance in SOI structure transistors prominently appears as a performance comparison. We have already developed low power consumption 256 kb SRAM using the above characteristics and will expand it as mixed logic components.