Patent ID: 8193595

Claim:
A method, comprising: forming a first layer having a first dopant concentration overlying a substrate, the first layer having a first portion that corresponds to an integrated circuit region and a second portion that corresponds to a micro-electromechanical region; doping the second portion of the first layer to have a second dopant concentration; forming a second layer having a third dopant concentration overlying the first layer, the second layer having a first portion that corresponds to the integrated circuit region and a second portion that corresponds to the micro-electromechanical region; doping the second portion of the second layer to have a fourth dopant concentration, the doping of the second portions of the first and second layers including: forming a transitional region that separates the integrated circuit region from the micro-electromechanical region, the transitional region having a width that is greater than or equal to a depth of the second and fourth dopant concentrations; forming a micro-electromechanical structure using the second and fourth dopant concentrations of the micro-electromechanical region of the first and second layers; and forming active components using the third dopant concentration of the integrated circuit region of the second layer.