Patent ID: 7038290
Filing Date: 2006-05-02
Classification: H01L,H01S

Abstract:
1. A solid state semiconductor device comprising: a first solid semiconductor material of one conductivity type, a second solid semiconductor material of an opposite conductivity type, said first and second solid semiconductor materials having respective adjoining regions, and a PN junction between said respective adjoining regions; and an electrically insulating solid material which adjoins said first solid semiconductor material, said second solid semiconductor material, and a lateral edge of said PN junction; said electrically insulating solid material having a top curved interface with a radius of curvature selected from the group consisting of 0.001 cm, 0.01 cm, 0.1 cm, and 1.0 cm; said first solid semiconductor material having a first portion which is above said PN junction and has a thickness which gradually changes with closeness in a lateral direction to said lateral edge of said PN junction; said second solid semiconductor material having a first portion which is underneath said PN junction and has a thickness which gradually changes with closeness in a lateral direction to said lateral edge of said PN junction direction; and said electrically insulating material having a first portion which is laterally spaced from said PN junction and has a thickness which gradually decreases with closeness in a lateral direction to said lateral edge of said PN junction.