Patent ID: 8803277

Claim:
An electronic device, comprising: a semiconductor layer having a first conductivity type and having a first surface; a primary junction in the semiconductor layer at the first surface thereof; a lightly doped region adjacent the primary junction and having a second conductivity type that is opposite the first conductivity type, the lightly doped region not extending beyond an area defined by the first surface; and a junction termination structure in the lightly doped region, wherein the junction termination structure has, when viewed in a plane of the first surface, an upper boundary, a side boundary, and a corner region between the upper boundary and the side boundary; wherein the lightly doped region extends in a first direction away from the primary junction and normal to a point on the upper boundary by a first distance that is smaller than a second distance by which the lightly doped region extends in a second direction away from the primary junction and normal to a point on the corner region.