INTEGRATION SYSTEM OF BiCMOS HAVING RAISED EXTERNAL BASE
    1.
    发明专利
    INTEGRATION SYSTEM OF BiCMOS HAVING RAISED EXTERNAL BASE 有权
    带有外部基底的BiCMOS集成系统

    公开(公告)号:JP2004319983A

    公开(公告)日:2004-11-11

    申请号:JP2004085745

    申请日:2004-03-23

    CPC classification number: H01L21/8249 H01L27/0623

    Abstract: PROBLEM TO BE SOLVED: To provide a method for forming a BiCMOS integrated circuit having a raised external base.
    SOLUTION: This method comprises a step for forming a polycrystal silicon layer on the surface of a gate dielectric substance 18 provided on a substrate having a device section 14 in which a bipolar transistor is formed and a device section 16 in which a CMOS transistor is formed. Then, the polycrystal silicon layer is patterned, and a sacrifice polycrystal silicon layer is formed above the device section in which the bipolar transistor is formed and the section around it. Meanwhile, a gate conductor is provided in the device section in which the CMOS transistor is formed at the same time. Then, a spacer 30 is provided around each of the gate conductor. Then a part of the sacrifice polycrystal silicon layer on the bipolar device section is selectively removed to provide an opening in the device section in which the bipolar transistor is formed. Then the bipolar transistor having a raised external base 58 is formed at the opening.
    COPYRIGHT: (C)2005,JPO&NCIPI

    Abstract translation: 要解决的问题:提供一种用于形成具有凸起的外部基底的BiCMOS集成电路的方法。 解决方案:该方法包括在设置在其上形成有双极晶体管的器件部分14的衬底上的栅极电介质18的表面上形成多晶硅层的步骤,以及器件部分16,其中CMOS 形成晶体管。 然后,对多晶硅层进行构图,在形成双极型晶体管的器件部分上方形成牺牲多晶硅层,并在其周围形成截面。 同时,在同时形成CMOS晶体管的器件部分中提供栅极导体。 然后,围绕每个栅极导体设置间隔件30。 然后,选择性地去除双极器件部分上牺牲多晶硅层的一部分,以在其中形成双极晶体管的器件部分中提供开口。 然后在开口处形成具有升高的外部基座58的双极晶体管。 版权所有(C)2005,JPO&NCIPI

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