Abstract: Integrated matrix array the points of which are defined by the intersection of the parallel lines of a first set with the parallel lines of a second set, said points being provided, or not provided, with semiconducting elements which have a first electrode connected to a line of the first set and a second electrode connected to a line of the second set, the array being of the type in which the first electrodes of the elements in each column or row are defined in a common semiconducting region, the second electrodes being provided only in the positions in which a semiconducting element is to be operative, said array being arranged such that:(a) the semiconducting elements in each column or row are partitioned into groups of 2k elements,(b) in each group, the semiconducting layer is partitioned into two portions, the first portion extending from one end of the group up to the position provided with the semiconducting element which is closest to the middle point of the group, and the second portion extending fro