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    • 3. 发明申请
    • FILM ACTUATOR BASED MEMS DEVICE AND METHOD
    • 基于FILM执行器的MEMS器件及方法
    • WO2005023699A1
    • 2005-03-17
    • PCT/IB2004/051732
    • 2004-09-09
    • NORDIA INNOVATION ABOBERHAMMER, JoachimSTEMME, Göran
    • OBERHAMMER, JoachimSTEMME, Göran
    • B81B3/00
    • H01H59/0009H01G5/18H01G5/40H01H2059/0045H01H2059/0072Y10T29/49105
    • The present invention discloses a Micro-Electro-Mechanical systems (MEMS) device suitable for use in a range of applications from DC, such as switching electrical signal lines, to RF applications such as tunable capacitors and switches. In an embodiment of the invention, the device comprises a bottom substrate and a top substrate separated at a fixed distance from each other. Disposed between the substrates is a flexible S-shaped membrane having an electrode or an electrically conducting electrode layer with one end attached to the top substrate and the other end in contact with the bottom substrate. An electrically conducting contact block is attached to the underside of the membrane actuator for short­ circuiting a signal line when the switch is in the closed position. When a voltage is applied between the membrane and an electrode layer on the bottom substrate, the membrane is induced by electrostatic force to deflect in a rolling wave-like motion such that the contact block is displaced into contact with the signal line. The device can be actively opened when a voltage is applied between the membrane actuator and a electrode layer on the top substrate causing the contact block to displace upward breaking contact with the signal line. The MEMS switching device is applicable for use in a switch matrix board for automatically switching telephone lines or in RF applications in the form of a tunable capacitor.
    • 本发明公开了适用于从诸如切换电信号线的DC到可变电容器和开关等RF应用的一系列应用的微机电系统(MEMS)装置。 在本发明的一个实施例中,该装置包括底部基板和彼此隔开固定距离的顶部基板。 设置在基板之间的是具有电极或导电电极层的柔性S形膜,其一端连接到顶部基板,另一端与底部基板接触。 当开关处于闭合位置时,导电接触块附接到膜致动器的下侧,以使信号线短路。 当在膜和底部基板上的电极层之间施加电压时,通过静电力诱导膜以滚动波状的运动偏转,使得接触块移位成与信号线接触。 当膜致动器和顶部基板上的电极层之间施加电压时,该装置可以被主动地打开,导致接触块向上移动与信号线的断开接触。 MEMS开关器件适用于用于自动切换电话线或以可调电容器形式的RF应用的开关矩阵板。
    • 5. 发明申请
    • METHOD OF FABRICATING MICRO-ELECTROMECHANICAL SWITCHES ON CMOS COMPATIBLE SUBSTRATES
    • 在CMOS兼容基板上制作微电子开关的方法
    • WO2003054938A1
    • 2003-07-03
    • PCT/US2002/036088
    • 2002-11-07
    • INTERNATIONAL BUSINESS MACHINES CORPORATION
    • VOLANT, Richard, P.BISSON, John, C.COTE, Donna, R.DALTON, Timothy, J.GROVES, Robert, A.PETRARCA, Kevin, S.STEIN, Kenneth, J.SUBBANNA, Seshadri
    • H01L21/20
    • B81C1/00246B81B2201/016B81B2201/018B81B2203/0127B81B2207/07B81C1/00611B81C2201/0122B81C2203/0735H01G5/40H01H59/0009
    • A method of fabricating micro-electromechanical switches (MEMS) using a process starting with a copper damascene interconnect layer, made of metal conductors inlaid in a dielectric (150). All, or portions, of the interconnects are recessed to a degree sufficient to provide a capacitive air gap when the switch is in the closed state, as well as provide space for a protective layer of, for example, Ta/TaN. The metal structures defined within the area specified for the switch act as actuator electrodes to pull down the movable beam (160) and provide one or more paths for the switched signal to traverse. The advantage of an air gap is that air is not subject to charge storage or trapping that can cause reliability and voltage drift problems. Instead of recessing the electrodes to provide a gap, one may just add dielectric on or around the electrode. The next layer is another dielectric layer which is deposited to the desired thickness of the gap formed between the moveable beam (160) that forms the switching device. Vias are fabricated through this dielectric to provide connections between the metal interconnect layer and the next metal layer which will also contain the switchable beam. The via layer is then patterned and etched to provide a cavity area which contains the lower activation electrodes as well as the signal paths. The cavity is then back-filled with a sacrificial release material.
    • 一种使用由铜镶嵌互连层开始的工艺来制造微机电开关(MEMS)的方法,由介于电介质(150)中的金属导体制成。 当开关处于闭合状态时,互连件的全部或部分凹陷到足以提供电容气隙的程度,以及为例如Ta / TaN的保护层提供空间。 在为开关指定的区域内限定的金属结构用作致动器电极以下拉可移动光束(160)并且提供用于切换信号穿过的一个或多个路径。 气隙的优点是空气不会受到可能导致可靠性和电压漂移问题的电荷储存或捕集。 代替使电极凹陷以提供间隙,可以仅在电极上或周围添加电介质。 下一层是沉积到形成开关装置的可移动梁(160)之间形成的间隙的所需厚度的另一介电层。 通过该电介质制造通孔以提供金属互连层和还包含可切换光束的下一个金属层之间的连接。 然后对通孔层进行图案化和蚀刻以提供包含下部激活电极以及信号路径的空腔区域。 然后用牺牲脱模材料填充空腔。