Patent ID: 6229179
Filing Date: 2001-05-08
Classification: H01L

Abstract:
An intelligent power integrated circuit comprising:a handling substrate of a first conductivity type of a first concentration;a substrate for a power device of a second conductivity type of a second concentration lower than that of the first concentration, the substrate for a power device having a first buffer layer of a third concentration higher than that of the second concentration formed around a surface between the handling substrate and the substrate for a power device, wherein the handling substrate has a second buffer layer of a fourth concentration higher than that of the first concentration around the surface between the handling substrate and the substrate for a power device;a substrate for a control device formed on an insulating layer partially formed on the substrate for a power device; anda control device formed on the substrate for a control device, and a power device vertically formed through the substrate for a power device and the handling substrate.