Patent ID: 8680617

Claim:
An SOI device comprising: an FET region comprising an SOI layer, the FET region having a gate on the SOI layer; an STI region having a first STI layer separating the SOI device from an adjacent SOI device, the first STI layer having a first thickness and extending entirely through the SOI layer, the first STI layer at a first level with respect to a bottom of the SOI layer; a body contact region between the FET region and STI region, the body contact region having an extension of the SOI layer and an overlying second STI layer in the body contact region having a second thickness; and a body contact in contact with the SOI extension, the body contact extending through the second STI layer and the body contact stopping on the SOI extension; wherein the SOI layer and the second STI layer are at a second level with respect to the bottom of the SOI layer and the gate is partially extending from the SOI layer over the second STI layer and being at the same level over the second STI layer as over the SOI layer; wherein the first level is different than the second level; wherein the first thickness is different than the second thickness and wherein the first and second layers of STI form a contiguous, split-level STI.