MEMS-based method for manufacturing sensor

    公开(公告)号:US09975766B2

    公开(公告)日:2018-05-22

    申请号:US15312146

    申请日:2015-05-05

    CPC classification number: B81C1/00619 B81C1/00 B81C2201/0133 B81C2201/0142

    Abstract: An MEMS-based method for manufacturing a sensor comprises the steps of: forming a shallow channel (120) and a support beam (140) on a front surface of a substrate (100); forming a first epitaxial layer (200) on the front surface of the substrate (100) to seal the shallow channel (120); forming a suspended mesh structure (160) below the first epitaxial layer (200); and forming a deep channel (180) at a position on a back surface of the substrate (100) corresponding to the shallow channel (120), so that the shallow channel (120) is in communication with the deep channel (180). In the Method of manufacturing a MEMS-based sensor, when a shallow channel is formed on a front surface, a support beam of a mass block is formed, so the etching of a channel is easier to control, the process is more precise, and the uniformity and the homogeneity of the formed support beam are better.

    VACUUM-CAVITY-INSULATED FLOW SENSORS
    105.
    发明申请
    VACUUM-CAVITY-INSULATED FLOW SENSORS 有权
    真空绝热流量传感器

    公开(公告)号:US20160054160A1

    公开(公告)日:2016-02-25

    申请号:US14933982

    申请日:2015-11-05

    Applicant: XIANG ZHENG TU

    Inventor: XIANG ZHENG TU

    Abstract: A vacuum-cavity-insulated flow sensor and related fabrication method are described. The sensor comprises a porous silicon wall with numerous vacuum-pores which is created in a silicon substrate, a porous silicon membrane with numerous vacuum-pores which is surrounded and supported by the porous silicon wall, and a cavity with a vacuum-space which is disposed beneath the porous silicon membrane and surrounded by the porous silicon wall. The fabrication method includes porous silicon formation and silicon polishing in HF solution.

    Abstract translation: 描述了真空腔绝缘流量传感器及相关的制造方法。 传感器包括具有许多真空孔的多孔硅壁,其形成于硅衬底中,多孔硅膜具有许多真空孔,该多孔硅膜被多孔硅壁包围和支撑,以及具有真空空间的空腔, 设置在多孔硅膜下方并被多孔硅壁包围。 制造方法包括HF溶液中的多孔硅形成和硅研磨。

    Vacuum cavity-insulated flow sensors
    106.
    发明授权
    Vacuum cavity-insulated flow sensors 有权
    真空腔绝缘流量传感器

    公开(公告)号:US09212940B2

    公开(公告)日:2015-12-15

    申请号:US13607352

    申请日:2012-09-07

    Applicant: Xiang Zheng Tu

    Inventor: Xiang Zheng Tu

    Abstract: A vacuum-cavity-insulated flow sensor and related fabrication method are described. The sensor comprises a porous silicon wall with numerous vacuum-pores which is created in a silicon substrate, a porous silicon membrane with numerous vacuum-pores which is surrounded and supported by the porous silicon wall, and a cavity with a vacuum-space which is disposed beneath the porous silicon membrane and surrounded by the porous silicon wall. The fabrication method includes porous silicon formation and silicon polishing in HF solution.

    Abstract translation: 描述了真空腔绝缘流量传感器及相关的制造方法。 传感器包括具有许多真空孔的多孔硅壁,其形成于硅衬底中,多孔硅膜具有许多真空孔,该多孔硅膜被多孔硅壁包围和支撑,以及具有真空空间的空腔, 设置在多孔硅膜下方并被多孔硅壁包围。 制造方法包括HF溶液中的多孔硅形成和硅研磨。

    Control over hydrogen fluoride levels in oxide etchant
    107.
    发明授权
    Control over hydrogen fluoride levels in oxide etchant 有权
    控制氧化物腐蚀剂中的氟化氢水平

    公开(公告)号:US08945939B2

    公开(公告)日:2015-02-03

    申请号:US14082448

    申请日:2013-11-18

    Applicant: Nalco Company

    Abstract: The invention is directed towards methods and compositions for identifying the amount of hydrofluoric acid in a buffered oxide etching composition. In buffered oxide etching compositions it is very difficult to measure the amount of hydrofluoric acid because it has varying equilibriums and it is toxic so it hard to handle and sample. When used to manufacture microchips however, incorrect amounts of hydrofluoric acid will ruin those chips. The invention utilizes a unique method of spectrographically measuring the hydrofluoric acid when in contact with added chromogenic agents to obtain exact measurements that are accurate, immediate, and safe.

    Abstract translation: 本发明涉及用于鉴定缓冲氧化物蚀刻组合物中氢氟酸的量的方法和组合物。 在缓冲氧化物蚀刻组合物中,非常难以测量氢氟酸的量,因为其具有不同的平衡,并且它是有毒的,因此难以处理和取样。 然而,当用于制造微芯片时,不正确量的氢氟酸会破坏这些芯片。 当与添加的显色剂接触时,本发明利用光谱测量氢氟酸的独特方法,以获得准确,立即和安全的精确测量。

    CONTROL OVER HYDROGEN FLUORIDE LEVELS IN OXIDE ETCHANT
    108.
    发明申请
    CONTROL OVER HYDROGEN FLUORIDE LEVELS IN OXIDE ETCHANT 有权
    控制氧化物中氢氟化物的含量

    公开(公告)号:US20140315320A1

    公开(公告)日:2014-10-23

    申请号:US14322009

    申请日:2014-07-02

    Applicant: Nalco Company

    Abstract: The invention is directed towards methods and compositions for identifying the amount of hydrofluoric acid in a buffered oxide etching composition. In buffered oxide etching compositions it is very difficult to measure the amount of hydrofluoric acid because it has varying equilibriums and it is toxic so it hard to handle and sample. When used to manufacture microchips however, incorrect amounts of hydrofluoric acid will ruin those chips. The invention utilizes a unique method of spectrographically measuring the hydrofluoric acid when in contact with added chromogenic agents to obtain exact measurements that are accurate, immediate, and safe.

    Abstract translation: 本发明涉及用于鉴定缓冲氧化物蚀刻组合物中氢氟酸的量的方法和组合物。 在缓冲氧化物蚀刻组合物中,非常难以测量氢氟酸的量,因为其具有不同的平衡,并且它是有毒的,因此难以处理和取样。 然而,当用于制造微芯片时,不正确量的氢氟酸会破坏这些芯片。 当与添加的显色剂接触时,本发明利用光谱测量氢氟酸的独特方法,以获得准确,立即和安全的精确测量。

    CONTROL OVER HYDROGEN FLUORIDE LEVELS IN OXIDE ETCHANT
    110.
    发明申请
    CONTROL OVER HYDROGEN FLUORIDE LEVELS IN OXIDE ETCHANT 有权
    控制氧化物中氢氟化物的含量

    公开(公告)号:US20130183773A1

    公开(公告)日:2013-07-18

    申请号:US13731296

    申请日:2012-12-31

    Abstract: The invention is directed towards methods and compositions for identifying the amount of hydrofluoric acid in a buffered oxide etching composition. In buffered oxide etching compositions it is very difficult to measure the amount of hydrofluoric acid because it has varying equilibriums and it is toxic so it hard to handle and sample. When used to manufacture microchips however, incorrect amounts of hydrofluoric acid will ruin those chips. The invention utilizes a unique method of spectrographically measuring the hydrofluoric acid when in contact with added chromogenic agents to obtain exact measurements that are accurate, immediate, and safe.

    Abstract translation: 本发明涉及用于鉴定缓冲氧化物蚀刻组合物中氢氟酸的量的方法和组合物。 在缓冲氧化物蚀刻组合物中,非常难以测量氢氟酸的量,因为其具有不同的平衡,并且它是有毒的,因此难以处理和取样。 然而,当用于制造微芯片时,不正确量的氢氟酸会破坏这些芯片。 当与添加的显色剂接触时,本发明利用光谱测量氢氟酸的独特方法,以获得准确,立即和安全的精确测量。

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