SEMICONDUCTOR DEVICE HAVING SCREENING ELECTRODE AND METHOD

摘要

PURPOSE: A semiconductor device having a screening electrode and its method are provided to prevent the deterioration of a breakdown voltage property and the increase in the capacitance of a gate to a drain. CONSTITUTION: An n-type region(17) is formed in the upper surface or the major surface(18) of a semiconductor region(11). A body region(31) is formed in a semiconductor layer(14). A current transfer region(33) is formed in the body region. A contact region(36) provides low contact resistance to the body region in the major surface. A first dielectric layer(41) is formed on or around the major surface. A conductive layer(46) is formed on a third dielectric layer(24) and a second dielectric layer(42).