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Formation manner of cross direction bipolar transistor and cross direction pnp transistor, bipolar transistor and cross direction pnp transistor
Formation manner of cross direction bipolar transistor and cross direction pnp transistor, bipolar transistor and cross direction pnp transistor
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机译:交叉双极性晶体管和交叉pnp晶体管的形成方式,双极性晶体管和交叉pnp晶体管
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摘要
PURPOSE: To fabricate a bipolar transistor conformable to a method for fabricating an MOS transistor required for fabrication of a BIMOS integrated circuit. ;CONSTITUTION: A first layer 18 of second conductivity type opposite to first conductivity type is formed along the surface of a semiconductor body of first conductivity type and a first region of second conductivity type, opposite to the conductivity type of the first layer, is formed on a part of the first layer. An aperture 42 is made in a second insulation layer 40 on a part of the first region. A third conductive layer 46 is formed in the aperture and on the second insulation layer. Exposed part of the second insulation layer is removed to expose a part of the first layer. A dopant of second conductivity type is buried in the third conductive layer and the exposed part of the first layer to form a second region 58 of first conductivity type around the first region 32. When the dopant is implanted from the third conductive layer into the first region during anneal process, a third region 60 of second conductivity type is formed in the first region.;COPYRIGHT: (C)1993,JPO
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