Cellular power semiconductor device - has draught-board type array of N and P=type cells connected resp. to two areas by pair of conductive sheets

摘要

The network of-conductive zones of two sheets is draught board network of directions parallel with those of a draught board network of n and p-type cells. The network of conductive zones is a network of alternate parallel bands of direction parallel with one of the directions of the network of cells of the draught board. The connection areas are separated by a rectilinear or circularr frontier zone. The patterns of the second frontier zone have an amplitude and pitch which is larger than those of the first frontier zones and are so determined as to make possible the large thicknesses of third and fourth conductive sheets.