Patent ID: 9287415
Filing Date: 2016-03-15
CPC Classification: H01L

Claim Text:
1. A Schottky bather diode, comprising: an n− type epitaxial layer disposed on a first surface of an n+ type silicon carbide substrate; a first p+ region disposed on the n− type epitaxial layer; an n type epitaxial layer disposed on the n− type epitaxial layer and the first p+ region; a second p+ region disposed on the n type epitaxial layer, and being in contact with the first p+ region; a Schottky electrode disposed on the n type epitaxial layer and the second p+ region; and an ohmic electrode disposed on a second surface of the n+ silicon carbide substrate, wherein the first p+ region has a lattice shape including a plurality of vertical portions and horizontal portions connecting both ends of the respective vertical portions to each other, the vertical portions include a plurality of first portions shaped like a hexagon, a plurality of second portions connecting the respective first portions, and a plurality of third portions connecting the first portions and the plurality of the horizontal portions, and the second portions and the third portions are shaped like a rod.