Precision high-frequency capacitor formed on semiconductor substrate
    1.
    发明授权
    Precision high-frequency capacitor formed on semiconductor substrate 有权
    精密高频电容器形成于半导体基板上

    公开(公告)号:US08324711B2

    公开(公告)日:2012-12-04

    申请号:US13075752

    申请日:2011-03-30

    IPC分类号: H01L21/02

    摘要: A precision high-frequency capacitor includes a dielectric layer formed on the front side surface of a semiconductor substrate and a first electrode on top of the dielectric layer. The semiconductor substrate is heavily doped and therefore has a low resistivity. A second electrode, insulated from the first electrode, is also formed over the front side surface. In one embodiment, the second electrode is connected by a metal-filled via to a layer of conductive material on the back side of the substrate. In alternative embodiments, the via is omitted and the second electrode is either in electrical contact with the substrate or is formed on top of the dielectric layer, yielding a pair of series-connected capacitors. ESD protection for the capacitor can be provided by a pair of oppositely-directed diodes formed in the substrate and connected in parallel with the capacitor. To increase the capacitance of the capacitor while maintaining a low effective series resistance, each of the electrodes may include a plurality of fingers, which are interdigitated with the fingers of the other electrode. The capacitor is preferably fabricated in a wafer-scale process concurrently with numerous other capacitors on the wafer, and the capacitors are then separated from each other by a conventional dicing technique.

    摘要翻译: 精密高频电容器包括形成在半导体衬底的前侧表面上的电介质层和位于电介质层顶部的第一电极。 半导体衬底是重掺杂的,因此具有低电阻率。 与第一电极绝缘的第二电极也形成在前侧表面上。 在一个实施例中,第二电极通过金属填充的通孔连接到衬底背面上的导电材料层。 在替代实施例中,省略通孔,并且第二电极与衬底电接触或者形成在电介质层的顶部,从而产生一对串联电容器。 电容器的ESD保护可以由形成在衬底中并与电容器并联连接的一对相反方向的二极管提供。 为了在保持低有效串联电阻的同时增加电容器的电容,每个电极可以包括与另一个电极的指状物交叉的多个指状物。 电容器优选与晶片上的许多其它电容器同时地以晶片级工艺制造,然后通过常规的切割技术将电容器彼此分离。

    Precision high-frequency capacitor formed on semiconductor substrate
    2.
    发明授权
    Precision high-frequency capacitor formed on semiconductor substrate 有权
    精密高频电容器形成于半导体基板上

    公开(公告)号:US08004063B2

    公开(公告)日:2011-08-23

    申请号:US11601501

    申请日:2006-11-16

    IPC分类号: H01L29/92

    摘要: A precision high-frequency capacitor includes a dielectric layer formed on the front side surface of a semiconductor substrate and a first electrode on top of the dielectric layer. The semiconductor substrate is heavily doped and therefore has a low resistivity. A second electrode, insulated from the first electrode, is also formed over the front side surface. In one embodiment, the second electrode is connected by a metal-filled via to a layer of conductive material on the back side of the substrate. In alternative embodiments, the via is omitted and the second electrode is either in electrical contact with the substrate or is formed on top of the dielectric layer, yielding a pair of series-connected capacitors. ESD protection for the capacitor can be provided by a pair of oppositely-directed diodes formed in the substrate and connected in parallel with the capacitor. To increase the capacitance of the capacitor while maintaining a low effective series resistance, each of the electrodes may include a plurality of fingers, which are interdigitated with the fingers of the other electrode. The capacitor is preferably fabricated in a wafer-scale process concurrently with numerous other capacitors on the wafer, and the capacitors are then separated from each other by a conventional dicing technique.

    摘要翻译: 精密高频电容器包括形成在半导体衬底的前侧表面上的电介质层和位于电介质层顶部的第一电极。 半导体衬底是重掺杂的,因此具有低电阻率。 与第一电极绝缘的第二电极也形成在前侧表面上。 在一个实施例中,第二电极通过金属填充的通孔连接到衬底背面上的导电材料层。 在替代实施例中,省略通孔,并且第二电极与衬底电接触或者形成在电介质层的顶部,从而产生一对串联电容器。 电容器的ESD保护可以由形成在衬底中并与电容器并联连接的一对相反方向的二极管提供。 为了在保持低有效串联电阻的同时增加电容器的电容,每个电极可以包括与另一个电极的指状物交叉的多个指状物。 电容器优选与晶片上的许多其它电容器同时地以晶片级工艺制造,然后通过常规的切割技术将电容器彼此分离。

    PRECISION HIGH-FREQUENCY CAPACITOR FORMED ON SEMICONDUCTOR SUBSTRATE
    8.
    发明申请
    PRECISION HIGH-FREQUENCY CAPACITOR FORMED ON SEMICONDUCTOR SUBSTRATE 有权
    精密高频电容器在半导体衬底上形成

    公开(公告)号:US20110176247A1

    公开(公告)日:2011-07-21

    申请号:US13075752

    申请日:2011-03-30

    IPC分类号: H02H9/00 H01L21/20 H01L29/92

    摘要: A precision high-frequency capacitor includes a dielectric layer formed on the front side surface of a semiconductor substrate and a first electrode on top of the dielectric layer. The semiconductor substrate is heavily doped and therefore has a low resistivity. A second electrode, insulated from the first electrode, is also formed over the front side surface. In one embodiment, the second electrode is connected by a metal-filled via to a layer of conductive material on the back side of the substrate. In alternative embodiments, the via is omitted and the second electrode is either in electrical contact with the substrate or is formed on top of the dielectric layer, yielding a pair of series-connected capacitors. ESD protection for the capacitor can be provided by a pair of oppositely-directed diodes formed in the substrate and connected in parallel with the capacitor. To increase the capacitance of the capacitor while maintaining a low effective series resistance, each of the electrodes may include a plurality of fingers, which are interdigitated with the fingers of the other electrode. The capacitor is preferably fabricated in a wafer-scale process concurrently with numerous other capacitors on the wafer, and the capacitors are then separated from each other by a conventional dicing technique.

    摘要翻译: 精密高频电容器包括形成在半导体衬底的前侧表面上的电介质层和位于电介质层顶部的第一电极。 半导体衬底是重掺杂的,因此具有低电阻率。 与第一电极绝缘的第二电极也形成在前侧表面上。 在一个实施例中,第二电极通过金属填充的通孔连接到衬底背面上的导电材料层。 在替代实施例中,省略通孔,并且第二电极与衬底电接触或者形成在电介质层的顶部,从而产生一对串联电容器。 电容器的ESD保护可以由形成在衬底中并与电容器并联连接的一对相反方向的二极管提供。 为了在保持低有效串联电阻的同时增加电容器的电容,每个电极可以包括与另一个电极的指状物交叉的多个指状物。 电容器优选与晶片上的许多其它电容器同时地以晶片级工艺制造,然后通过常规的切割技术将电容器彼此分离。

    Precision high-frequency capacitor formed on semiconductor substrate
    9.
    发明申请
    Precision high-frequency capacitor formed on semiconductor substrate 有权
    精密高频电容器形成于半导体基板上

    公开(公告)号:US20100295152A1

    公开(公告)日:2010-11-25

    申请号:US11601501

    申请日:2006-11-16

    IPC分类号: H01L29/92

    摘要: A precision high-frequency capacitor includes a dielectric layer formed on the front side surface of a semiconductor substrate and a first electrode on top of the dielectric layer. The semiconductor substrate is heavily doped and therefore has a low resistivity. A second electrode, insulated from the first electrode, is also formed over the front side surface. In one embodiment, the second electrode is connected by a metal-filled via to a layer of conductive material on the back side of the substrate. In alternative embodiments, the via is omitted and the second electrode is either in electrical contact with the substrate or is formed on top of the dielectric layer, yielding a pair of series-connected capacitors. ESD protection for the capacitor can be provided by a pair of oppositely-directed diodes formed in the substrate and connected in parallel with the capacitor. To increase the capacitance of the capacitor while maintaining a low effective series resistance, each of the electrodes may include a plurality of fingers, which are interdigitated with the fingers of the other electrode. The capacitor is preferably fabricated in a wafer-scale process concurrently with numerous other capacitors on the wafer, and the capacitors are then separated from each other by a conventional dicing technique.

    摘要翻译: 精密高频电容器包括形成在半导体衬底的前侧表面上的电介质层和位于电介质层顶部的第一电极。 半导体衬底是重掺杂的,因此具有低电阻率。 与第一电极绝缘的第二电极也形成在前侧表面上。 在一个实施例中,第二电极通过金属填充的通孔连接到衬底背面上的导电材料层。 在替代实施例中,省略通孔,并且第二电极与衬底电接触或者形成在电介质层的顶部,从而产生一对串联电容器。 电容器的ESD保护可以由形成在衬底中并与电容器并联连接的一对相反方向的二极管提供。 为了在保持低有效串联电阻的同时增加电容器的电容,每个电极可以包括与另一个电极的指状物交叉的多个指状物。 电容器优选与晶片上的许多其它电容器同时地以晶片级工艺制造,然后通过常规的切割技术将电容器彼此分离。