Micromechanical component having a diaphragm
    21.
    发明授权
    Micromechanical component having a diaphragm 失效
    具有隔膜的微机械部件

    公开(公告)号:US07495302B2

    公开(公告)日:2009-02-24

    申请号:US11072859

    申请日:2005-03-03

    IPC分类号: H01L27/00

    摘要: A micromechanical component having a diaphragm is provided, the structure of which effectively prevents the penetration of dirt particles into the cavity. A method for manufacturing such a component is also provided. The structure of the component is implemented in a layer structure which includes at least one first sacrificial layer and a layer system over the first sacrificial layer. A cavity is formed in the first sacrificial layer underneath the diaphragm. In the region of the diaphragm between the upper layer and the lower layer of the layer system situated directly above the first sacrificial layer, at least one access channel to the cavity is formed which has at least one opening in the upper layer and at least one opening in the lower layer, the opening in the upper layer and the opening in the lower layer being offset with respect to each other.

    摘要翻译: 提供了具有隔膜的微机械部件,其结构有效地防止了灰尘颗粒进入空腔。 还提供了制造这种部件的方法。 组件的结构以包括至少一个第一牺牲层和第一牺牲层上的层系统的层结构来实现。 在隔膜下方的第一牺牲层中形成空腔。 在位于第一牺牲层正上方的层系统的上层和下层之间的隔膜区域中,形成至少一个到空腔的通道,其在上层中具有至少一个开口,并且至少一个开口 在下层中开口,上层中的开口和下层中的开口相对于彼此偏移。

    Method for manufacturing a micromechanical component, and micromechanical component
    23.
    发明授权
    Method for manufacturing a micromechanical component, and micromechanical component 失效
    微机械部件的制造方法以及微机电部件

    公开(公告)号:US08481427B2

    公开(公告)日:2013-07-09

    申请号:US11921999

    申请日:2006-04-27

    IPC分类号: H01L21/302

    摘要: A micromechanical method for manufacturing a cavity in a substrate, and a micromechanical component manufactured with this method. In this method, in a first step a first layer is produced on or in a substrate. At least one second layer is then applied onto the first layer. An access hole is produced in this second layer. Material of the first layer and of the substrate can be dissolved out through this hole, so that a cavity is produced in the substrate beneath at least a portion of the second layer. This second layer above the cavity can subsequently be used as a membrane. In addition, the possibility also exists of depositing further layers onto the second layer, only the totality of which layers constitutes the membrane. The material of the first layer is selected so that dissolving out the material of the first layer produces a transition edge in the first layer, which edge at is at a predefinable angle between the substrate and the second layer.

    摘要翻译: 用于制造衬底中的空腔的微机械方法和用该方法制造的微机械部件。 在该方法中,在第一步骤中,在衬底上或衬底中产生第一层。 然后将至少一个第二层施加到第一层上。 在该第二层中产生通孔。 可以通过该孔将第一层和基底的材料溶解出来,从而在第二层的至少一部分下面的衬底中产生空腔。 随后可以将空腔上方的第二层用作膜。 此外,还存在将另外的层沉积到第二层上的可能性,仅这些层的总体构成膜。 选择第一层的材料,使得溶解第一层的材料在第一层中产生过渡边缘,该边缘处于基板和第二层之间的预定角度。

    SEMICONDUCTOR COMPONENT HAVING A MICROMECHANICAL MICROPHONE STRUCTURE
    24.
    发明申请
    SEMICONDUCTOR COMPONENT HAVING A MICROMECHANICAL MICROPHONE STRUCTURE 有权
    具有微机电麦克风结构的半导体元件

    公开(公告)号:US20120091545A1

    公开(公告)日:2012-04-19

    申请号:US13262905

    申请日:2010-04-06

    IPC分类号: H01L29/84

    摘要: A simple and cost-effective form of implementing a semiconductor component having a micromechanical microphone structure, including an acoustically active diaphragm as a deflectable electrode of a microphone capacitor, a stationary, acoustically permeable counterelement as a counter electrode of the microphone capacitor, and means for applying a charging voltage between the deflectable electrode and the counter electrode of the microphone capacitor. In order to not impair the functionality of this semiconductor component, even during overload situations in which contact occurs between the diaphragm and the counter electrode, the deflectable electrode and the counter electrode of the microphone capacitor are counter-doped, at least in places, so that they form a diode in the event of contact. In addition, the polarity of the charging voltage between the deflectable electrode and the counter electrode is such that the diode is switched in the blocking direction.

    摘要翻译: 实现具有微机械麦克风结构的半导体部件的简单和成本有效的形式,包括作为麦克风电容器的可偏转电极的声学活动光圈,作为麦克风电容器的对电极的静止的,声学可渗透的反射器,以及用于 在麦克风电容器的可偏转电极和对电极之间施加充电电压。 为了不损害该半导体元件的功能,即使在隔膜和对电极之间发生接触的过载情况下,麦克风电容器的可偏转电极和对电极至少在某些地方相互掺杂 它们在接触的情况下形成二极管。 此外,可偏转电极和对电极之间的充电电压的极性使得二极管在阻挡方向上被切换。

    Micromechanical sensor
    25.
    发明授权
    Micromechanical sensor 有权
    微机械传感器

    公开(公告)号:US07435991B2

    公开(公告)日:2008-10-14

    申请号:US10588838

    申请日:2004-12-20

    IPC分类号: H01L23/58

    摘要: A micromechanical sensor and a method for manufacturing same are described. A secure diaphragm restraint, independent of fluctuations in the cavern etching process due to the process technology, and a free design of the diaphragm are made possible by designing a suitable connection of the diaphragm in an oxide layer created by local oxidation. The micromechanical sensor includes, for example, a substrate, an external oxide layer formed in a laterally external area in the substrate, a diaphragm having multiple perforation holes formed in a laterally internal diaphragm area, a cavern etched in the substrate beneath the diaphragm, whereby the diaphragm is suspended in a suspension area of the external oxide layer which tapers toward connecting points of the diaphragm and the diaphragm is situated in its vertical height between a top side and a bottom side of the external oxide layer.

    摘要翻译: 描述了一种微机械传感器及其制造方法。 通过设计通过局部氧化产生的氧化物层中的隔膜的适当连接,可以实现由于工艺技术而独立于洞穴蚀刻工艺的波动和隔膜的自由设计的安全膜片约束。 微机械传感器包括例如基板,形成在基板的横向外部区域中的外部氧化物层,具有形成在横向内部隔膜区域中的多个穿孔的隔膜,在隔膜下方的基板中蚀刻的基底,由此 隔膜悬挂在外部氧化物层的悬垂区域中,该外部氧化物层朝向隔膜的连接点逐渐变细,并且隔膜位于外部氧化物层的顶侧和底侧之间的垂直高度。