Patent ID: 6498368
Filing Date: 2002-12-24
Classification: H01L

Abstract:
A semiconductor device which obstructs current flow between a first terminal and a second terminal by forming a space-charge area extending through a part of a semiconductor chip when a voltage is impressed between said first terminal and said second terminal:wherein the substrate main face of said semiconductor chip is positioned on the (110) face, a couple of opposed side edges out of four side edges of said semiconductor chip are positioned on the {111} face perpendicular to the (110) face, and a voltage holding area is formed within said semiconductor chip, comprised of first regions of a first conduction type electrically connected to said second terminal and second regions of a second conduction type electrically connected to said first terminal, said first and second regions being arranged alternately and adjacently; wherein the boundary between said first regions of the first conduction type and said second regions of the second conduction type has the shape extending in the [110] axis direction; and wherein positive and negative space-charge regions are formed arranged alternately in said voltage holding area comprised of said first regions of the first conduction type and said second regions of the second conduction type when the current flow between said first terminal and said second terminal is obstructed.