Patent ID: 6403427
Filing Date: 2002-06-11
Classification: H01L

Abstract:
A method of fabricating an integrated circuit device, comprising the steps of:forming a substantially monocrystalline semiconductor substrate having a surface; forming from the substantially monocrystalline semiconductor substrate, a modified substantially monocrystalline substrate having a body region and a protruding region, the protruding region having a first portion extending from the body region with respect to a first dimension to a first position from the body region and a second portion extending from the first portion with respect to the first dimension to at least a second position from the body region, the second position from the body region being greater than the first position from the body region with respect to the first dimension, forming an electrical isolation region overlying the body region and laterally extending from the first portion of the protruding region with respect to a second dimension, the second dimension substantially perpendicular to the first dimension, the electrical isolation region extending away from the body region to the first position with respect to the first dimension; and forming an additional semiconductor region overlying the body region and extending away from electrical isolation region with respect to the first dimension to at least the second position and laterally adjoining the second portion of the protruding region.