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    • 1. 发明授权
      US07572661B2 Method for manufacturing a micromechanical sensor element 有权
    • Method for manufacturing a micromechanical sensor element
    • 微机械传感器元件的制造方法
    • US07572661B2
    • 2009-08-11
    • US11223637
    • 2005-09-08
    • Hubert Benzel , Stefan Finkbeiner , Matthias Illing , Frank Schaefer , Simon Armbruster , Gerhard Lammel , Christoph Schelling , Joerg Brasas
    • Hubert Benzel , Stefan Finkbeiner , Matthias Illing , Frank Schaefer , Simon Armbruster , Gerhard Lammel , Christoph Schelling , Joerg Brasas
    • H01L21/00
    • B81C1/00047 , B81B2203/0109 , B81C2201/0115 , B81C2201/0116 , G01L9/0045
    • Described is a method for manufacturing a micromechanical sensor element and a micromechanical sensor element manufactured in particular using such a method which has a hollow space or a cavity and a membrane for detecting a physical variable. Different method steps are performed for manufacturing the sensor element, among other things, a structured etch mask having a plurality of holes or apertures being applied on a semiconductor substrate. Moreover, an etch process is used to create depressions in the semiconductor substrate beneath the holes in the structured etch mask. Anodization of the semiconductor material is subsequently carried out, the anodization taking place preferably starting from the created depressions in the semiconductor substrate. Due to this process, porous areas are created beneath the depressions, a lattice-like structure made of untreated, i.e., non-anodized, substrate material remaining between the porous areas and the depressions. This lattice-like structure extends preferably from the surface of the semiconductor into the depth. The etch mask for creating the depressions may be removed, optionally prior to or subsequent to the anodization. A temperature treatment is carried out for creating the hollow space and the membrane in the semiconductor substrate which forms the sensor element. During this process, the hollow space is created from the at least one area that has been rendered porous beneath a depression and the membrane above the hollow space is created from the lattice-like structure by rearranging the semiconductor material.
    • 描述了一种用于制造微机械传感器元件和微机械传感器元件的方法，特别是使用具有中空空间或空腔和用于检测物理变量的膜的方法制造的微机械传感器元件。 执行用于制造传感器元件的不同的方法步骤，其中包括施加在半导体衬底上的多个孔或孔的结构化蚀刻掩模。 此外，蚀刻工艺用于在结构化蚀刻掩模中的孔下面的半导体衬底中产生凹陷。 随后进行半导体材料的阳极氧化，阳极氧化发生优选从半导体衬底中产生的凹陷开始。 由于该过程，在凹陷下方产生多孔区域，由未处理的，即非阳极氧化的衬底材料制成的格状结构保留在多孔区域和凹陷之间。 这种格子状结构优选地从半导体的表面延伸到深度。 用于产生凹陷的蚀刻掩模可以任选地在阳极氧化之前或之后被去除。 进行温度处理，以形成形成传感器元件的半导体衬底中的中空空间和膜。 在该过程中，中空空间是从至少一个已经在凹陷下方多孔的区域产生的，并且通过重新排列半导体材料，从网格状结构产生中空空间之上的膜。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 2. 发明申请
      US20060063293A1 Micromechanical sensor element 有权
    • Micromechanical sensor element
    • 微机械传感器元件
    • US20060063293A1
    • 2006-03-23
    • US11223637
    • 2005-09-08
    • Hubert Benzel , Stefan Finkbeiner , Matthias Illing , Frank Schaefer , Simon Armbruster , Gerhard Lammel , Christoph Schelling , Joerg Brasas
    • Hubert Benzel , Stefan Finkbeiner , Matthias Illing , Frank Schaefer , Simon Armbruster , Gerhard Lammel , Christoph Schelling , Joerg Brasas
    • H01L21/00
    • B81C1/00047 , B81B2203/0109 , B81C2201/0115 , B81C2201/0116 , G01L9/0045
    • Described is a method for manufacturing a micromechanical sensor element and a micromechanical sensor element manufactured in particular using such a method which has a hollow space or a cavity and a membrane for detecting a physical variable. Different method steps are performed for manufacturing the sensor element, among other things, a structured etch mask having a plurality of holes or apertures being applied on a semiconductor substrate. Moreover, an etch process is used to create depressions in the semiconductor substrate beneath the holes in the structured etch mask. Anodization of the semiconductor material is subsequently carried out, the anodization taking place preferably starting from the created depressions in the semiconductor substrate. Due to this process, porous areas are created beneath the depressions, a lattice-like structure made of untreated, i.e., non-anodized, substrate material remaining between the porous areas and the depressions. This lattice-like structure extends preferably from the surface of the semiconductor into the depth. The etch mask for creating the depressions may be removed, optionally prior to or subsequent to the anodization. A temperature treatment is carried out for creating the hollow space and the membrane in the semiconductor substrate which forms the sensor element. During this process, the hollow space is created from the at least one area that has been rendered porous beneath a depression and the membrane above the hollow space is created from the lattice-like structure by rearranging the semiconductor material.
    • 描述了一种用于制造微机械传感器元件和微机械传感器元件的方法，特别是使用具有中空空间或空腔和用于检测物理变量的膜的方法制造的微机械传感器元件。 执行用于制造传感器元件的不同的方法步骤，其中包括施加在半导体衬底上的多个孔或孔的结构化蚀刻掩模。 此外，蚀刻工艺用于在结构化蚀刻掩模中的孔下面的半导体衬底中产生凹陷。 随后进行半导体材料的阳极氧化，阳极氧化发生优选从半导体衬底中产生的凹陷开始。 由于该过程，在凹陷下方产生多孔区域，由未处理的，即非阳极氧化的衬底材料制成的格状结构保留在多孔区域和凹陷之间。 这种格子状结构优选地从半导体的表面延伸到深度。 用于产生凹陷的蚀刻掩模可以任选地在阳极氧化之前或之后被去除。 进行温度处理，以形成形成传感器元件的半导体衬底中的中空空间和膜。 在该过程中，中空空间是从至少一个已经在凹陷下方多孔的区域产生的，并且通过重新排列半导体材料，从网格状结构产生中空空间之上的膜。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 3. 发明授权
      US07354786B2 Sensor element with trenched cavity 有权
    • Sensor element with trenched cavity
    • 带沟槽的传感器元件
    • US07354786B2
    • 2008-04-08
    • US11223592
    • 2005-09-08
    • Hubert Benzel , Stefan Finkbeiner , Matthias Illing , Frank Schaefer , Simon Armbruster , Gerhard Lammel , Christoph Schelling , Joerg Brasas
    • Hubert Benzel , Stefan Finkbeiner , Matthias Illing , Frank Schaefer , Simon Armbruster , Gerhard Lammel , Christoph Schelling , Joerg Brasas
    • H01L21/00
    • G01L9/0045 , B81B2203/0315 , B81C1/00182 , G01P15/0802
    • A micromechanical sensor element and a method for the production of a micromechanical sensor element that is suitable, for example in a micromechanical component, for detecting a physical quantity. Provision is made for the sensor element to include a substrate, an access hole and a buried cavity, at least one of the access holes and the cavity being produced in the substrate by a trench etching and/or, in particular, an isotropic etching process. The trench etching process includes different trenching (trench etching) steps which may be divided into a first phase and a second phase. Thus, in the first phase, at least one first trenching step is carried out in which, in a predeterminable first time period, material is etched out of the substrate and a depression is produced. In that trenching step, a typical concavity is produced in the wall of the depression. A passivation process is then carried out in that first phase, in which the concavity produced in the walls of the depression by the first trenching step is covered with a passivation material. The first trenching step and the first passivation process may be carried out repeatedly in alternating succession within the first phase, with the result that a typical corrugation is obtained on the walls of the depression so produced. In the second phase of the trench etching process, the cavity is produced through the at least one access hole produced by the depression, by carrying out a second trenching step of a predetermined second time period that is distinctly longer in comparison with the first time period.
    • 微机械传感器元件和用于生产微机械传感器元件的方法，其适用于例如微机械部件中，用于检测物理量。 为传感器元件提供包括基板，进入孔和埋入空腔的设置，通过沟槽蚀刻和/或特别地，各向同性蚀刻工艺在基板中产生至少一个访问孔和空腔 。 沟槽蚀刻工艺包括可分为第一相和第二相的不同的开沟（沟槽蚀刻）步骤。 因此，在第一阶段中，执行至少一个第一开沟步骤，其中在可预定的第一时间段内将材料从衬底中蚀刻出来并产生凹陷。 在挖沟步骤中，在凹陷的壁上产生典型的凹陷。 然后在第一阶段进行钝化处理，其中通过第一开挖步骤在凹陷的壁中产生的凹陷被钝化材料覆盖。 第一开沟步骤和第一钝化工艺可以在第一阶段内连续交替重复进行，结果是在如此制造的凹陷的壁上获得典型的波纹。 在沟槽蚀刻工艺的第二阶段，通过执行与第一时间段相比明显更长的预定第二时间段的第二开沟步骤，通过由凹陷产生的至少一个访问孔产生空腔 。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 4. 发明申请
      US20060057816A1 Sensor element with trenched cavity 有权
    • Sensor element with trenched cavity
    • 带沟槽的传感器元件
    • US20060057816A1
    • 2006-03-16
    • US11223592
    • 2005-09-08
    • Hubert Benzel , Stefan Finkbeiner , Matthias Illing , Frank Schaefer , Simon Armbruster , Gerhard Lammel , Christoph Schelling , Joerg Brasas
    • Hubert Benzel , Stefan Finkbeiner , Matthias Illing , Frank Schaefer , Simon Armbruster , Gerhard Lammel , Christoph Schelling , Joerg Brasas
    • H01L21/76
    • G01L9/0045 , B81B2203/0315 , B81C1/00182 , G01P15/0802
    • A micromechanical sensor element and a method for the production of a micromechanical sensor element that is suitable, for example in a micromechanical component, for detecting a physical quantity. Provision is made for the sensor element to include a substrate, an access hole and a buried cavity, at least one of the access holes and the cavity being produced in the substrate by a trench etching and/or, in particular, an isotropic etching process. The trench etching process includes different trenching (trench etching) steps which may be divided into a first phase and a second phase. Thus, in the first phase, at least one first trenching step is carried out in which, in a predeterminable first time period, material is etched out of the substrate and a depression is produced. In that trenching step, a typical concavity is produced in the wall of the depression. A passivation process is then carried out in that first phase, in which the concavity produced in the walls of the depression by the first trenching step is covered with a passivation material. The first trenching step and the first passivation process may be carried out repeatedly in alternating succession within the first phase, with the result that a typical corrugation is obtained on the walls of the depression so produced. In the second phase of the trench etching process, the cavity is produced through the at least one access hole produced by the depression, by carrying out a second trenching step of a predetermined second time period that is distinctly longer in comparison with the first time period.
    • 微机械传感器元件和用于生产微机械传感器元件的方法，其适用于例如微机械部件中，用于检测物理量。 为传感器元件提供包括基板，进入孔和埋入空腔的设置，通过沟槽蚀刻和/或特别地，各向同性蚀刻工艺在基板中产生至少一个访问孔和空腔 。 沟槽蚀刻工艺包括可分为第一相和第二相的不同的开沟（沟槽蚀刻）步骤。 因此，在第一阶段中，执行至少一个第一开沟步骤，其中在可预定的第一时间段内将材料从衬底中蚀刻出来并产生凹陷。 在挖沟步骤中，在凹陷的壁上产生典型的凹陷。 然后在第一阶段进行钝化处理，其中通过第一开挖步骤在凹陷的壁中产生的凹陷被钝化材料覆盖。 第一开沟步骤和第一钝化工艺可以在第一阶段内连续交替重复进行，结果是在如此制造的凹陷的壁上获得典型的波纹。 在沟槽蚀刻工艺的第二阶段，通过执行与第一时间段相比明显更长的预定第二时间段的第二开沟步骤，通过由凹陷产生的至少一个访问孔产生空腔 。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
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