Patent ID: 6639259
Filing Date: 2003-10-28
Classification: H01L

Abstract:
A charge-coupled device comprising a semiconductor body (11) having a charge-transport channel, situated at a surface, in the form of a zone (12) of a first conductivity type, which is provided in a well (13) of the opposite, i.e. the second conductivity type, a row of electrodes (9, 10) in the form of conductor tracks being provided above the charge-transport channel, said conductor tracks being separated from the underlying semiconductor body by an intermediate dielectric layer, the row of electrodes comprising at least a first electrode (10b) and an adjacent second electrode (10a) which, viewed in the direction of the charge transport, is situated behind the first electrode, characterized in that the average doping concentration of impurity atoms of the second conductivity type in the well is lower at the location of the second electrode than at the location of the first electrode.