发明申请
US20060234484A1 METHOD AND STRUCTURE FOR ION IMPLANTATION BY ION SCATTERING 审中-公开
离子散射的离子注入方法和结构

METHOD AND STRUCTURE FOR ION IMPLANTATION BY ION SCATTERING
摘要:
A scatter-implant process and device is provided where a bi-level doping pattern is achieved in a single doping step. Additionally, devices having different breakdown voltages can be produced in a single implant process. The scatter-implant is fabricated by scattering implant ions off the edge of a mask, thereby reducing the ion energy causing the ions to doping shallower regions than the non-scattered ions which dope a lower region. By adjusting various parameters of the doping process such as, for example, ion type, ion energy, mask type and geometry, in a position of scattering edge relative to other structure of the device, the scatter-implant can be tuned to achieve certain properties of the semiconductor device. Additionally, circuits can be made using the scatter-implant process where pre-selected portion of the circuit incorporate the scatter-implant region and other portions of the circuit do not rely on the scatter region.
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