Frame-transfer charge-coupled image sensor device having channel sounding regions below light-admitting windows

Claim 1

A charge coupled image sensor device for receiving a radiation image and converting it into an electrical signal, wherein a number of substantially parallel charge transport channels spaced apart from one another are situated in a semiconductor body along a major surface thereof, the body has channel bounding regions which laterally bound the channels along substantially their entire lengths so as to electrically separate them, an electrode system for controlling charge transport in the channels lies on an insulating layer at the major surface and has windows for allowing in particular short-wave light of the radiation image to penetrate into the body and generate charge carriers therein, and a group of first electrodes in the system extends across all of the channels substantially transverse to their longitudinal direction, characterized in that the system includes a group of second electrodes situated apart from one another above the channels, that each second electrode extends along substantially the entire length of a different one of the channels, that the second electrodes together with the first electrodes are not present at the windows, and that the channel bounding regions are situated below substantially the entire areas of the windows.