Patent ID: 9076760
Filing Date: 2015-07-07
Classification: G06F,H01L

Abstract:
1. A junction field-effect transistor (JFET), comprising: a substrate having a first-type semiconductor surface (semiconductor surface) including a topside surface; a top gate comprising a second-type formed in said semiconductor surface; a first-type drain and a first-type source formed on opposing sides of said top gate in said semiconductor surface; a first deep trench isolation region having an inner first trench wall and an outer first trench wall surrounding said top gate, said drain and said source and extending vertically to a deep trench depth from said topside surface; a second-type sinker formed in said semiconductor surface laterally outside said outer first trench wall, said sinker extending vertically from said topside surface to a second-type deep portion which is both below said deep trench depth and extends laterally inside said inner first trench wall to provide a bottom gate.