Patent US 4,211,936

A gate electrode which is common to at least two CCD channels is formed with a "window" over one of the channels. A second gate electrode over the first controls the substrate potential of the one channel through the window but has no effect on the substrate potential of the other channel. The structure makes it possible to block or delay the propagation of charge in one channel relative to the other and is useful, for example, in structures for parallel-to-serial charge signal translation and vice versa.