First, basics of CCD image sensor will be shortly reviewed. Second, the super CCD will be presented, and its characteristics are discussed in comparison with a conventional ITCCD. Third, the topics of current developments will be discussed. Hitherto, the main theme of developing CCD image sensor has been on how to reduce the pixel size, especially for DSC applications. Already, the pixel size has become about 2-μm squire, and a pixel number has increased over 5 millions which makes the resolution equal to that of a film camera. Now, the pixel number competition will be on the final stage. The next challenges will be shift to the technologies for enhancing sensitivity, widening dynamic range and making a high frame rate movie from a mega-pixel imager. New technologies for realizing such requirements will be introduced, which are a dual pixel structure for widening the dynamic range and a horizontally signal charge mixing architecture to output a high frame movie.