FORMING ELECTRICALLY INSULATIVE REGIONS

摘要

A method of forming an electrically insulative region from an area of a layer of electrically conductive or semi conductive material, such that electrical current flow within the layer and across said area is at least inhibited. The method comprises: forming at least one electrically insulative feature in said layer to define an insulative perimeter around said area, the or each insulative feature being arranged to at least inhibit electrical current flow within the layer of material; and forming at least one further electrically insulative feature inside said perimeter so as to divide said area into a plurality of parts, said parts being at least partially electrically insulated from each another. Devices incorporating such insulative regions are disclosed, as are different methods for forming the insulative features.