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    • 33. 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。
    • 34. 发明申请
    • CMOS-COMPATIBLE MEM SWITCHES AND METHOD OF MAKING
    • CMOS兼容元件开关及其制造方法
    • WO0135433A3
    • 2001-12-27
    • PCT/US0023197
    • 2000-08-23
    • HRL LAB LLC
    • CHOW LAP-WAIHSU TSUNG-YUANHYMAN DANIEL JLOO ROBERT YOUYANG PAULSCHAFFNER JAMES HSCHMITZ ADELESCHWARTZ ROBERT N
    • B81B3/00B81C1/00H01H1/021H01H1/58H01H49/00H01H59/00H01H50/00
    • B81C1/00246B81B2201/014B81C2201/014B81C2203/0714B81C2203/0735H01H1/58H01H59/0009H01H2001/0057
    • A microelectromechanical (MEM) switch is fabricated inexpensively by using processing steps which are standard for fabricating multiple metal layer integrated circuits, such as CMOS. The exact steps may be adjusted to be compatible with the process of a particular foundry, resulting in a device which is both low cost and readily integrable with other circuits. The processing steps include making contacts for the MEM switch from metal plugs which are ordinarily used as viasto connect metal layers which are separated by a dielectric layer. Such contact vias are formed on either side of a sacrificial metallization area, and then the interconnect metallization is removed from between the contact vias, leaving them separated. Dielectric surrounding the contacts is etched back so that they protrude towards each other. Thus, when the contacts are moved towards each other by actuating the MEM switch, they connect firmly without obstruction. Tungsten is typically used to form vias in CMOS processes, and it makes an excellent contact material, but other via metals may also be employed as contacts. Interconnect metallization may be employed for other structural and interconnect needs of the MEM switch, and is preferably standard for the foundry and process used. Various metals and dielectric materials may be used to create the switches, but in a preferred embodiment the interconnect metal layers are aluminum and the dielectric material is SiO2, materials which are fully compatible with standard four-layer CMOS fabrication processes.
    • 通过使用标准制造多个金属层集成电路(如CMOS)的处理步骤,廉价地制造了微机电(MEM)开关。 可以将精确的步骤调整为与特定代工厂的过程兼容,从而导致低成本且易于与其他电路集成的装置。 处理步骤包括从通常用作通过电介质层分离的永久连接的金属层的金属插头形成用于MEM开关的触点。 这种接触通孔形成在牺牲金属化区域的任一侧,然后从接触通孔之间移除互连金属化,使它们分开。 围绕触点的介质被回蚀,使得它们彼此突出。 因此,当通过致动MEM开关使触点彼此移动时,它们牢固地连接而不阻塞。 钨通常用于在CMOS工艺中形成通孔,并且它制成优良的接触材料,但也可以使用其它通孔金属作为接触。 互连金属化可以用于MEM开关的其他结构和互连需求,并且优选地是用于所使用的铸造和工艺的标准。 可以使用各种金属和介电材料来制造开关,但是在优选实施例中,互连金属层是铝,并且介电材料是SiO 2,与标准四层CMOS制造工艺完全兼容的材料。
    • 37. 发明申请
    • METHOD FOR PRODUCING A MICROELECTROMECHANICAL DEVICE AND MICROELECTROMECHANICAL DEVICE
    • 一种用于生产微机电装置和微机电器件
    • WO2011117181A3
    • 2012-04-26
    • PCT/EP2011054220
    • 2011-03-21
    • ELMOS SEMICONDUCTOR AGTEN-HAVE ARND
    • TEN-HAVE ARND
    • B81C1/00G01L9/00
    • G01L1/16B81B2201/0264B81B2207/015B81C1/00246B81C1/00626B81C2203/0735G01L9/0047G01L9/0054G01L9/0098H01L27/20H01L29/66075
    • The invention relates to a method for producing a microelectromechanical device in a material substrate suitable for producing integrated electronic components, in particular a semiconductor substrate, wherein a material substrate (12, 14, 16) is provided on which at least one surface structure (26) is to be formed during production of the device. An electronic component (30) is formed in the material substrate (12, 14, 16) using process steps of a conventional method for producing integrated electronic components. A device component (44) defining the position of the electronic component (30) and/or required for the function of the electronic component (30) is selectively formed on the material substrate (12, 14, 16) from an etching stop material acting as an etching stop in case of etching of the material substrate (12, 14, 16) and/or in case of etching of a material layer (52) disposed on the material substrate (12, 14, 16). When the device component (44) of the electronic component (30) is implemented, a boundary region (48) is also formed on the material substrate (12, 14, 16) along at least a partial section of an edge of the surface structure (26), wherein said boundary region bounds said partial section. The material substrate (12, 14, 16) thus implemented is selectively etched for forming the surface structure (26), in that the edge of the bounding region (48) defines the position of the surface structure (26) to be implemented on the material substrate (12, 14, 16).
    • 在一种用于在适合于生产集成电子元件材料基板的制造一个微机电装置,特别是半导体衬底的过程中,提供的材料衬底(12,14,16)的制造装置(26)的期间,在至少一个表面结构来形成。 在材料衬底(12,14,16)的电子部件(30)使用常规方法的工艺步骤用于制造集成电子元件形成。 在材料衬底(12,14,16)是有选择地将电子部件(30)和/或电子部件的所需的结构部件(44)的操作(30)的限定的位置由一个(在蚀刻材料基板12的情况下, 14,16)和/或布置在蚀刻(在形成在每一种情况下作为腐蚀材料衬底12,14,16)材料层(52)停止第一蚀刻停止材料的情况下。 对于这种蚀刻停止材料是在形成将电子部件(30)的结构部件(44)也沿着该表面结构的边缘的至少一个局部部分的材料衬底(12,14,16)(26)上形成有该部分节边界约束区(48) , 由此形成的材料基板(12,14,16)被选择性地限定的边界区域(48)的表面的位置的一个边缘蚀刻以形成用于形成表面结构(26)的材料衬底(12,14,16)上的结构(26)。
    • 38. 发明申请
    • VERFAHREN ZUR HERSTELLUNG EINER MIKROELEKTROMECHANISCHEN VORRICHTUNG UND MIKROELEKTROMECHANISCHE VORRICHTUNG
    • 一种用于生产微机电装置和微机电器件
    • WO2011117181A2
    • 2011-09-29
    • PCT/EP2011/054220
    • 2011-03-21
    • ELMOS SEMICONDUCTOR AGTEN-HAVE, Arnd
    • TEN-HAVE, Arnd
    • B81C1/00
    • G01L1/16B81B2201/0264B81B2207/015B81C1/00246B81C1/00626B81C2203/0735G01L9/0047G01L9/0054G01L9/0098H01L27/20H01L29/66075
    • Bei Verfahren zur Herstellung einer mikroelektromechanischen Vorrichtung in einem für die Herstellung integrierter elektronischer Bauteile geeigneten Materialsubstrat, insbesondere Halbleitersubstrat, wird ein Materialsubstrat (12,14,16) bereitgestellt, auf dem während der Herstellung der Vorrichtung mindestens eine Oberflächenstruktur (26) auszubilden ist. In dem Materialsubstrat (12,14, 16) wird unter Verwendung von Prozessschritten eines herkömmlichen Verfahrens zur Herstellung integrierter elektronischer Bauteile ein elektronisches Bauteil (30) ausgebildet. Auf dem Materialsubstrat (12,14,16) wird selektiv eine die Lage des elektronischen Bauteils (30) definierende und/oder für die Funktion des elektronischen Bauteils (30) erforderliche Bauteilkomponente (44) aus einem im Falle eines Ätzens des Materialsubstrats (12, 14,16) und/oder im Falle eines Ätzens einer auf dem Materialsubstrat (12,14,16) angeordneten Materialschicht (52) jeweils als Ätzstopp wirkendes erstes Ätzstopp-Material ausgebildet. Aus diesem Ätzstopp-Material wird bei Ausbildung der Bauteilkomponente (44) des elektronischen Bauteils (30) auch auf dem Materialsubstrat (12,14,16) längs zumindest eines Teilabschnitts eines Randes der Oberflächenstruktur (26) ein diesen Teilabschnitt begrenzendes Begrenzungsgebiet (48) ausgebildet. Das so ausgebildete Materialsubstrat (12,14, 16) wird zur Bildung der Oberflächenstruktur (26) selektiv geätzt, indem ein Rand des Begrenzungsgebiets (48) die Position der auszubildenden Oberflächenstruktur (26) auf dem Materialsubstrat (12,14,16) definiert.
    • 在一种用于在适合于生产集成电子元件材料基板的制造一个微机电装置,特别是半导体衬底的过程中,提供的材料衬底(12,14,16)的制造装置(26)的期间,在至少一个表面结构来形成。 在材料衬底(12,14,16)的电子部件(30)使用常规方法的工艺步骤用于制造集成电子元件形成。 在材料衬底(12,14,16)是有选择地将电子部件(30)和/或电子部件的所需的结构部件(44)的操作(30)的限定的位置由一个(在蚀刻材料基板12的情况下, 14,16)和/或布置在蚀刻(在形成在每一种情况下作为腐蚀材料衬底12,14,16)材料层(52)停止第一蚀刻停止材料的情况下。 对于这种蚀刻停止材料是在形成将电子部件(30)的结构部件(44)也沿着该表面结构的边缘的至少一个局部部分的材料衬底(12,14,16)(26)上形成有该部分节边界约束区(48) , 由此形成的材料基板(12,14,16)被选择性地限定的边界区域(48)的表面的位置的一个边缘蚀刻以形成用于形成表面结构(26)的材料衬底(12,14,16)上的结构(26)。