Photosensitive charge-coupled device comprising vertical electrodes

A charge transfer device formed in a semiconductor substrate and comprising an array of electrodes forming rows and columns, said rows corresponding to a charge transfer direction, wherein:

• the electrodes exclusively extend in successive grooves with insulated walls disposed in the substrate thickness and parallel to the charge transfer direction, and
• charge accumulation and transfer regions extend, in a volume delimited by neighbouring electrodes of a same column, in an N-type layer having a thickness substantially equal to the depth of the electrodes.