Method of producing heat dissipating structure for semiconductor devices
    1.
    发明授权
    Method of producing heat dissipating structure for semiconductor devices 失效
    制造半导体器件散热结构的方法

    公开(公告)号:US06284574B1

    公开(公告)日:2001-09-04

    申请号:US09223979

    申请日:1999-01-04

    IPC分类号: H01L2148

    摘要: A structure and process are described for facilitating the conduction of heat away from a semiconductor device. Thermally conductive planes and columns are incorporated within the back-end structure and around the interconnect outside the chip. A thermally conductive plane is formed by forming a first insulating layer on an underlying layer of the device; forming a recess in the insulating layer; filling the recess with a thermally conductive material to form a lateral heat-dissipating layer; planarizing the heat-dissipating layer to make the top surface thereof coplanar with the unrecessed portion of the insulating layer; and forming a second insulating layer on the first insulating layer and the heat-dissipating layer, thereby embedding the heat-dissipating layer between the first and second insulating layers. The heat-dissipating layer is electrically isolated from the underlying layer of the device, and preferably is electrically grounded.

    摘要翻译: 描述了用于促进远离半导体器件的热传导的结构和工艺。 导热平面和列结合在后端结构中并且围绕芯片外的互连。 导热平面通过在器件的下层上形成第一绝缘层而形成; 在所述绝缘层中形成凹部; 用导热材料填充凹部以形成横向散热层; 使散热层平坦化,使其顶面与绝缘层的未加工部分共面; 以及在所述第一绝缘层和所述散热层上形成第二绝缘层,从而将所述散热层嵌入所述第一绝缘层和所述第二绝缘层之间。 散热层与器件的下层电隔离,优选电接地。

    Low temperature bi-CMOS compatible process for MEMS RF resonators and filters
    5.
    发明申请
    Low temperature bi-CMOS compatible process for MEMS RF resonators and filters 失效
    用于MEMS RF谐振器和滤波器的低温双CMOS兼容工艺

    公开(公告)号:US20090108381A1

    公开(公告)日:2009-04-30

    申请号:US10316254

    申请日:2002-12-10

    IPC分类号: H03H9/24 H01L23/28 H01L21/56

    摘要: A method of formation of a microelectromechanical system (MEMS) resonator or filter which is compatible with integration with any analog, digital, or mixed-signal integrated circuit (IC) process, after or concurrently with the formation of the metal interconnect layers in those processes, by virtue of its materials of composition, processing steps, and temperature of fabrication is presented. The MEMS resonator or filter incorporates a lower metal level, which forms the electrodes of the MEMS resonator or filter, that may be shared with any or none of the existing metal interconnect levels on the IC. It further incorporates a resonating member that is comprised of at least one metal layer for electrical connection and electrostatic actuation, and at least one dielectric layer for structural purposes. The gap between the electrodes and the resonating member is created by the deposition and subsequent removal of a sacrificial layer comprised of a carbon-based material. The method of removal of the sacrificial material is by an oxygen plasma or an anneal in an oxygen containing ambient. A method of vacuum encapsulation of the MEMS resonator or filter is provided through means of a cavity containing the MEMS device, filled with additional sacrificial material, and sealed. Access vias are created through the membrane sealing the cavity; the sacrificial material is removed as stated previously, and the vias are re-sealed in a vacuum coating process.

    摘要翻译: 一种形成微机电系统(MEMS)谐振器或滤波器的方法,其与在任何模拟,数字或混合信号集成电路(IC)工艺中的集成兼容,或者与这些工艺中的金属互连层的形成同时 ,由于其组成材料,加工步骤和制造温度。 MEMS谐振器或滤波器包含形成MEMS谐振器或滤波器的电极的较低金属电平,其可与IC上的现有金属互连电平中的任何一个或任何一个共享。 它还包括谐振元件,该谐振元件由用于电连接和静电驱动的至少一个金属层和至少一个用于结构目的的电介质层组成。 通过沉积并随后去除由碳基材料构成的牺牲层来产生电极和谐振构件之间的间隙。 去除牺牲材料的方法是通过氧等离子体或在含氧环境中的退火。 MEMS谐振器或滤波器的真空封装方法是通过一个包含MEMS器件的空腔的装置提供的,其中填充有额外的牺牲材料并被密封。 通过隔膜密封腔形成通孔; 如先前所述去除牺牲材料,并且在真空涂覆工艺中重新密封通孔。

    Low temperature Bi-CMOS compatible process for MEMS RF resonators and filters
    8.
    发明授权
    Low temperature Bi-CMOS compatible process for MEMS RF resonators and filters 失效
    用于MEMS RF谐振器和滤波器的低温Bi-CMOS兼容工艺

    公开(公告)号:US07943412B2

    公开(公告)日:2011-05-17

    申请号:US10316254

    申请日:2002-12-10

    IPC分类号: H01L21/00

    摘要: A method of formation of a microelectromechanical system (MEMS) resonator or filter which is compatible with integration with any analog, digital, or mixed-signal integrated circuit (IC) process, after or concurrently with the formation of the metal interconnect layers in those processes, by virtue of its materials of composition, processing steps, and temperature of fabrication is presented. The MEMS resonator or filter incorporates a lower metal level, which forms the electrodes of the MEMS resonator or filter, that may be shared with any or none of the existing metal interconnect levels on the IC. It further incorporates a resonating member that is comprised of at least one metal layer for electrical connection and electrostatic actuation, and at least one dielectric layer for structural purposes. The gap between the electrodes and the resonating member is created by the deposition and subsequent removal of a sacrificial layer comprised of a carbon-based material. The method of removal of the sacrificial material is by an oxygen plasma or an anneal in an oxygen containing ambient. A method of vacuum encapsulation of the MEMS resonator or filter is provided through means of a cavity containing the MEMS device, filled with additional sacrificial material, and sealed. Access vias are created through the membrane sealing the cavity; the sacrificial material is removed as stated previously, and the vias are re-sealed in a vacuum coating process.

    摘要翻译: 一种形成微机电系统(MEMS)谐振器或滤波器的方法,其与在任何模拟,数字或混合信号集成电路(IC)工艺中的集成兼容,或者与这些工艺中的金属互连层的形成同时 ,由于其组成材料,加工步骤和制造温度。 MEMS谐振器或滤波器包含形成MEMS谐振器或滤波器的电极的较低金属电平,其可与IC上的现有金属互连电平中的任何一个或任何一个共享。 它还包括谐振元件,该谐振元件由用于电连接和静电驱动的至少一个金属层和至少一个用于结构目的的电介质层组成。 通过沉积并随后去除由碳基材料构成的牺牲层来产生电极和谐振构件之间的间隙。 去除牺牲材料的方法是通过氧等离子体或在含氧环境中的退火。 MEMS谐振器或滤波器的真空封装方法是通过一个包含MEMS器件的空腔的装置提供的,其中填充有额外的牺牲材料并被密封。 通过隔膜密封腔形成通孔; 如先前所述去除牺牲材料,并且在真空涂覆工艺中重新密封通孔。