CMOS technology after reaching the scale limit

Progress of CMOS LSI has been accomplished by the downsizing of MOSFETs. However, it has been expected that the downscaling will reach its limits about the gate length of 5 nm around the year of 2020. 2020 is not too far, but there is no sufficiently clear image for the world after CMOS reaches its scaling limit. This paper will discuss the picture of the CMOS technology in the world after the 2020.