MOS varactor using isolation well
    32.
    发明授权
    MOS varactor using isolation well 有权
    MOS变容管使用隔离井

    公开(公告)号:US07714412B2

    公开(公告)日:2010-05-11

    申请号:US10711144

    申请日:2004-08-27

    CPC classification number: H01L29/93 H01L29/94

    Abstract: The present invention provides a varactor that has increased tunability and a high quality factor Q as well as a method of fabricating the varactor. The method of the present invention can be integrated into a conventional CMOS processing scheme or into a conventional BiCMOS processing scheme. The method includes providing a structure that includes a semiconductor substrate of a first conductivity type and optionally a subcollector or isolation well (i.e., doped region) of a second conductivity type located below an upper region of the substrate, the first conductivity type is different from said second conductivity type. Next, a plurality of isolation regions are formed in the upper region of the substrate and then a well region is formed in the upper region of the substrate. In some cases, the doped region is formed at this point of the inventive process. The well region includes outer well regions of the second conductivity type and an inner well region of the first conductivity type. Each well of said well region is separated at an upper surface by an isolation region. A field effect transistor having at least a gate conductor of the first conductivity type is then formed above the inner well region.

    Abstract translation: 本发明提供一种具有增加的可调性和高品质因数Q的变容二极管以及制造变容二极管的方法。 本发明的方法可以集成到常规的CMOS处理方案中,或者被整合到常规的BiCMOS处理方案中。 该方法包括提供包括第一导电类型的半导体衬底和位于衬底的上部区域下方的第二导电类型的子集电极或隔离阱(即,掺杂区)的结构,第一导电类型不同于 所述第二导电类型。 接下来,在基板的上部区域形成多个隔离区域,然后在基板的上部区域形成阱区域。 在一些情况下,在本发明方法的这一点形成掺杂区域。 阱区包括第二导电类型的外阱区和第一导电类型的内阱区。 所述阱区的每个阱在上表面被隔离区分开。 然后形成至少具有第一导电类型的栅极导体的场效应晶体管,并在内部阱区域的上方形成。

    Semiconductor-insulator-silicide capacitor
    34.
    发明授权
    Semiconductor-insulator-silicide capacitor 失效
    半导体绝缘体硅化物电容器

    公开(公告)号:US07479439B2

    公开(公告)日:2009-01-20

    申请号:US11737844

    申请日:2007-04-20

    CPC classification number: H01L29/94

    Abstract: A semiconductor-insulator-silicide (SIS) capacitor is formed by depositing a thin silicon containing layer on a salicide mask dielectric layer, followed by lithographic patterning of the stack and metallization of the thin silicon containing layer and other exposed semiconductor portions of a semiconductor substrate. The thin silicon containing layer is fully reacted during metallization and consequently converted to a silicide alloy layer, which is a first electrode of a capacitor. The salicide mask dielectric layer is the capacitor dielectric. The second electrode of the capacitor may be a doped polycrystalline silicon containing layer, a doped single crystalline semiconductor region, or another doped polycrystalline silicon containing layer disposed on the doped polycrystalline silicon containing layer. The SIS insulator may further comprise other dielectric layers and conductive layers to increase capacitance per area.

    Abstract translation: 半导体绝缘体硅化物(SIS)电容器是通过在硅化物掩模介电层上沉积薄硅层而形成的,随后叠层的平版印刷图案化以及薄硅层和半导体衬底的其它暴露的半导体部分的金属化 。 含硅薄层在金属化期间完全反应,因此转化为硅化物合金层,其是电容器的第一电极。 硅化物掩模介电层是电容器电介质。 电容器的第二电极可以是掺杂的多晶硅含硅层,掺杂的单晶半导体区域或设置在掺杂的多晶硅含硅层上的另一掺杂的多晶硅含硅层。 SIS绝缘体还可以包括其它电介质层和导电层,以增加每面积的电容。

    Resistor tuning
    37.
    发明授权
    Resistor tuning 有权
    电阻调谐

    公开(公告)号:US07239006B2

    公开(公告)日:2007-07-03

    申请号:US10709115

    申请日:2004-04-14

    CPC classification number: H01C17/267

    Abstract: A structure for resistors and the method for tuning the same. The resistor comprises an electrically conducting region coupled to a liner region. Both the electrically conducting region and the liner region are electrically coupled to first and second contact regions. A voltage difference is applied between the first and second contact regions. As a result, a current flows between the first and second contact regions in the electrically conducting region. The voltage difference and the materials of the electrically conducting region and the liner region are such that electromigration occurs only in the electrically conducting region. As a result, a void region within the electrically conducting region expands in the direction of the flow of the charged particles constituting the current. Because the resistor loses a conducting portion of the electrically conducting region to the void region, the resistance of the resistor is increased (i.e., tuned).

    Abstract translation: 电阻器结构及其调谐方法。 电阻器包括耦合到衬垫区域的导电区域。 导电区域和衬里区域都电耦合到第一和第二接触区域。 在第一和第二接触区域之间施加电压差。 结果,电流在导电区域中的第一和第二接触区域之间流动。 导电区域和衬垫区域的电压差和材料使得电迁移仅在导电区域中发生。 结果,导电区域内的空隙区域在构成电流的带电粒子的流动方向上膨胀。 因为电阻器将导电区域的导电部分损失到空隙区域,电阻器的电阻增加(即调谐)。

    Precision polysilicon resistor process
    39.
    发明授权
    Precision polysilicon resistor process 有权
    精密多晶硅电阻工艺

    公开(公告)号:US07112535B2

    公开(公告)日:2006-09-26

    申请号:US10605439

    申请日:2003-09-30

    CPC classification number: H01L27/0738 H01L27/0802 H01L28/20

    Abstract: A process is disclosed for fabricating precision polysilicon resistors which more precisely control the tolerance of the sheet resistivity of the produced polysilicon resistors. The process generally includes performing an emitter/FET activation rapid thermal anneal (RTA) on a wafer having partially formed polysilicon resistors, followed by steps of depositing a protective dielectric layer on the polysilicon, implanting a dopant through the protective dielectric layer into the polysilicon to define the resistance of the polysilicon resistors, and forming a silicide.

    Abstract translation: 公开了一种制造精密多晶硅电阻器的方法,其更精确地控制所产生的多晶硅电阻器的薄层电阻率的公差。 该方法通常包括在具有部分形成的多晶硅电阻器的晶片上执行发射极/ FET激活快速热退火(RTA),随后是在多晶硅上沉积保护性介电层的步骤,将掺杂剂通过保护电介质层注入到多晶硅中 限定多晶硅电阻器的电阻,并形成硅化物。

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