Patent ID: 8466513
Filing Date: 2013-06-18
Classification: H01L

Abstract:
1. A semiconductor device comprising: a region of semiconductor material having a major surface; a trench control structure in the region of semiconductor material including a gate dielectric layer adjacent sidewall surfaces of the trench control structure and a gate electrode comprising a first conductive material overlying the gate dielectric layer, where the trench control structure further includes a shield electrode below the gate electrode, where the shield electrode is separated from the region of semiconductor material by a dielectric layer; a body region within the region of semiconductor material and adjacent the trench control structure, where the trench control structure is configured to form a channel region within the body region, where the channel region includes a source end and a drain end; a source region within the body region having a first side adjacent the trench control structure and a second side opposite to the first side; a first feature comprising a material other than the first conductive material within the gate electrode, where the first feature is configured to induce stress within portions of the channel region; and a second feature within the shield electrode, where the second feature is configured to induce stress within a drift region of the semiconductor device.