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    • 5. 发明申请
    • CMOS COMPATIBLE MEMS MICROPHONE AND METHOD FOR MANUFACTURING THE SAME
    • CMOS兼容MEMS麦克风及其制造方法
    • WO2012012939A1
    • 2012-02-02
    • PCT/CN2010/075514
    • 2010-07-28
    • GOERTEK INC.WANG, Zhe
    • WANG, Zhe
    • B81B7/00B81C1/00H04R7/00
    • H04R31/00B81B2201/0221B81B2201/0257B81B2207/015B81C1/00246B81C2203/0714B81C2203/0735H04R19/005H04R19/04
    • The present invention relates to a CMOS compatible MEMS microphone, comprising: an SOI substrate, wherein a CMOS circuitry is accommodated on its silicon device layer; a microphone diaphragm formed with a part of the silicon device layer, wherein the microphone diaphragm is doped to become conductive; a microphone backplate including CMOS passivation layers with a metal layer sandwiched and a plurality of through holes, provided above the silicon device layer, wherein the plurality of through holes are formed in the portions thereof opposite to the microphone diaphragm, and the metal layer forms an electrode plate of the backplate; a plurality of dimples protruding from the lower surface of the microphone backplate opposite to the diaphragm; and an air gap, provided between the diaphragm and the microphone backplate, wherein a spacer forming a boundary of the air gap is provided outside of the diaphragm or on the edge of the diaphragm; wherein a back hole is formed to be open in substrate underneath the diaphragm so as to allow sound pass through, and the microphone diaphragm is used as an electrode plate to form a variable capacitive sensing element with the electrode plate of the microphone backplate.
    • 本发明涉及一种CMOS兼容MEMS麦克风,包括:SOI衬底,其中CMOS电路容纳在其硅器件层上; 形成有硅器件层的一部分的麦克风隔膜,其中所述麦克风隔膜被掺杂以变成导电; 麦克风背板,其具有夹在金属层上的CMOS钝化层和设置在硅器件层上方的多个通孔,其中多个通孔形成在与麦克风隔膜相对的部分中,并且金属层形成 背板电极板; 从所述麦克风背板的与所述隔膜相对的下表面突出的多个凹坑; 以及设置在隔膜和麦克风背板之间的气隙,其中形成气隙边界的间隔件设置在隔膜的外侧或隔膜的边缘上; 其特征在于,在所述振动板的下方的基板上形成有开放的孔,以使声音通过,所述麦克风隔膜用作电极板,以形成具有所述麦克风背板的电极板的可变电容感测元件。
    • 6. 发明申请
    • MICROFABRICATION METHODS FOR FORMING ROBUST ISOLATION AND PACKAGING
    • 用于形成坚固的隔离和包装的微加工方法
    • WO2008067294A3
    • 2008-11-27
    • PCT/US2007085609
    • 2007-11-27
    • UNIV FLORIDAXIE HUIKAI
    • XIE HUIKAI
    • B81C1/00B81B3/00
    • B81C1/00246B81B3/007B81B3/0081B81C2203/0714B81C2203/0735
    • Provided are electrical single-crystal silicon (SCS) isolation devices and methods for manufacturing the SCS isolation devices. The isolation device can include a trench isolation structure formed using a trench having sidewall dielectrics and a follow-up filling of a metal or a polymer that is conductive or nonconductive. Metals such as a copper can be electroplated to fill the trench to provide robust mechanical support and a thermal conducting path for subsequent fabrication processes. In addition, exemplary embodiments provide a CMOS compatible process for self-packaging the disclosed isolation device or other devices from CMOS processing. In an exemplary embodiment, a backside packaging can be performed on a structured substrate prior to fabricating the active structures from the front side. Following the formation of the active structures (e.g., movable micro-sensors), a front-side packaging can be performed using bonding pads to complete the disclosed self-packaging process.
    • 提供了电单晶硅(SCS)隔离装置和用于制造SCS隔离装置的方法。 隔离装置可以包括使用具有侧壁电介质的沟槽和随后填充导电或不导电的金属或聚合物的沟槽形成的沟槽隔离结构。 可以电镀铜等金属以填充沟槽,从而为随后的制造工艺提供坚固的机械支撑和导热路径。 另外,示例性实施例提供用于将所公开的隔离装置或其他装置自包装进CMOS处理的CMOS兼容工艺。 在示例性实施例中,可以在从正面制造有源结构之前在结构化衬底上执行背面封装。 在形成有源结构(例如,可移动的微型传感器)之后,可使用接合焊盘来执行正面封装以完成所公开的自封装过程。
    • 9. 发明申请
    • MICROELECTRONIC MECHANICAL SYSTEM AND METHODS
    • 微电子机械系统与方法
    • WO2003023849A1
    • 2003-03-20
    • PCT/US2002/027822
    • 2002-08-29
    • SILICON LIGHT MACHINES
    • BRUNER, Mike
    • H01L23/02
    • B81C1/00484B81B2201/0271B81B2203/0136B81C1/00246B81C1/00333B81C2201/0109B81C2201/014B81C2203/0136B81C2203/0735
    • The current invention provides for encapsulated release structures, intermediates thereof and methods for their fabrication. The multi-layer structure has a capping layer (211) that preferably comprises silicon oxide and/or silicon nitride and which is formed over an etch resistant substrate (203). A patterned device layer (206), preferably comprising silicon nitride, is embedded in a sacrificial material (205, 209), preferably comprising polysilicon, and is disposed between the etch resistant substrate (203) and the capping layer (211). Access trenches or holes (219) are formed into the capping layer (211) and the sacrificial material (205, 209) is selectively etched through the access trenches (219) such that portions of the device layer (206) are released from the sacrificial material (205, 209). The etchant preferably comprises a noble gas fluoride N g F 2x (wherein Ng = Xe, Kr or Ar: and where x = 1, 2 or 3). After etching that sacrificial material (205, 209), the access trenches (219) are sealed to encapsulate (241) released portions the device layer (206) between the etch resistant substrate (203) and the capping layer (211). The current invention is particularly useful for fabricating MEMs devices, multiple cavity devices and devices with multiple release features.
    • 本发明提供了包封的释放结构,其中间体及其制备方法。 多层结构具有优选包括氧化硅和/或氮化硅并且形成在耐蚀刻衬底(203)上的覆盖层(211)。 优选地包括氮化硅的图案化器件层(206)嵌入在牺牲材料(205,209)中,优选地包括多晶硅,并且设置在耐蚀刻衬底(203)和覆盖层(211)之间。 进入沟槽或孔(219)形成为覆盖层(211),并且牺牲材料(205,209)通过通路沟槽(219)被选择性蚀刻,使得器件层(206)的部分从牺牲层 材料(205,209)。 蚀刻剂优选包含惰性气体氟化物NgF2x(其中Ng = Xe,Kr或Ar:其中x = 1,2或3)。 在蚀刻该牺牲材料(205,209)之后,密封接入沟槽(219)以将该器件层(206)的封装(241)释放部分封装在耐蚀刻衬底(203)和覆盖层(211)之间。 本发明对于制造具有多个释放特征的MEM器件,多腔器件和器件特别有用。