TDI, Time Delayed Integration, line scan cameras are used for application which require higher sensitivity. It uses multiple line scan stages up to provide up to 256 times higher sensitivity while a standard line scan camera scans only one time. However, they also have some disadvantages because of the conventional sensor structure's limit. To improve TDI line scanning performance, Vieworks has developed hybrid TDI line scan sensor. The Hybrid TDI sensor with CCD pixel structure implemented by using CMOS technology allows ultra-high-speed image captures with up to 256 times greater sensitivity. It is the first concept of TDI line scan sensor and Vieworks named it VTDI (Vieworks TDI).