MICRO-ELECTRO-MECHANICAL SYSTEM MICROPHONE CHIP WITH AN EXPANDED BACK CHAMBER
    1.
    发明申请
    MICRO-ELECTRO-MECHANICAL SYSTEM MICROPHONE CHIP WITH AN EXPANDED BACK CHAMBER 审中-公开
    微电子机械系统麦克风芯片与扩展的后室

    公开(公告)号:US20130101143A1

    公开(公告)日:2013-04-25

    申请号:US13278558

    申请日:2011-10-21

    IPC分类号: H04R1/00

    摘要: A MEMS microphone chip with an expanded chamber comprises a base plate, and the base plate has a main chamber and a secondary chamber. The secondary chamber is formed beside the main chamber, and is connected to the main chamber. A vibration membrane is suspended above the main chamber for receiving external sound waves, and the vibration membrane vibrates in corresponding to the chambers. The MEMS microphone chip has a higher sensitivity because of the expanded chamber, and therefore has a more ideal audio frequency response curve.

    摘要翻译: 具有扩展室的MEMS麦克风芯片包括基板,并且基板具有主室和次室。 副室形成在主室旁边,并连接到主室。 振动膜悬挂在主室上方,用于接收外部声波,振动膜相应于腔室振动。 由于扩大的腔室,MEMS麦克风芯片具有更高的灵敏度,因此具有更理想的音频响应曲线。

    Micro-electro-mechanical system microphone chip with expanded back chamber
    2.
    发明授权
    Micro-electro-mechanical system microphone chip with expanded back chamber 失效
    微机电系统麦克风芯片具有扩展后室

    公开(公告)号:US08687827B2

    公开(公告)日:2014-04-01

    申请号:US13482350

    申请日:2012-05-29

    IPC分类号: H04R25/00 H01L29/84

    摘要: A MEMS microphone chip with an expanded back chamber includes a first chip unit and a second chip unit. The first chip unit has a first substrate, a vibration membrane layer is formed above an end of the first substrate, and a space is formed below the vibration membrane layer of the first substrate, so that the vibration membrane layer is suspended above the first substrate to vibrate. The second chip unit has a second substrate to couple with another end of the first substrate, and a groove is formed in the second substrate with a width larger than that of the space; when the first substrate and the second substrate are coupled together, the groove and the space are connected together to act as the back chamber of the vibration membrane layer.

    摘要翻译: 具有扩展后室的MEMS麦克风芯片包括第一芯片单元和第二芯片单元。 第一芯片单元具有第一基板,在第一基板的端部的上方形成振动膜层,在第一基板的振动膜层的下方形成有空间,使得振动膜层悬挂在第一基板的上方 振动 第二芯片单元具有与第一基板的另一端连接的第二基板,并且在第二基板中形成宽度大于该空间的宽度的槽; 当第一基板和第二基板联接在一起时,槽和空间连接在一起以用作振动膜层的后室。

    INTEGRATED LEAN BURN STABILIZERS
    3.
    发明申请
    INTEGRATED LEAN BURN STABILIZERS 审中-公开
    集成精准碾压稳定器

    公开(公告)号:US20130263820A1

    公开(公告)日:2013-10-10

    申请号:US13858474

    申请日:2013-04-08

    IPC分类号: F02B17/00

    摘要: An integrated lean burn stabilizer (ILBS) for initiating combustion in an internal combustion engine by generating and introducing active free radicals into a combustion chamber is provided. Engines equipped with the ILBS can achieve a fuel efficient clean combustion processes with a lean and/or diluted mixture otherwise incapable of auto ignition and provide a controlled start of combustion, in conjunction with early in-cylinder direct injection, late diesel-like in-cylinder direct injection, and mixed fuel functions allowing control of the composition and stratification of the mixture. Controlled aspects of the fuel mixture include the equivalent ratio and fuel reactivity combinations inside the main combustion chamber, thereby allowing the start of combustion and duration of combustion inside the main combustion chamber be optimized for maximum cycle efficiency and specific power output while minimizing emissions. The early direct injection function of ILBS can also address the potential issue of homogeneity of port injected low-volatility fuel mixture entering the combustion chamber.

    摘要翻译: 提供了一种用于通过产生和将活性自由基引入燃烧室中来在内燃机中引发燃烧的综合稀燃稳定器(ILBS)。 装备有ILBS的发动机可以实现具有稀薄和/或稀释混合物的燃料效率高的清洁燃烧过程,否则不能自动点火,并提供控制的燃烧开始,以及早期的缸内直接喷射, 气缸直接喷射和混合燃料功能,从而控制混合物的组成和分层。 燃料混合物的受控方面包括主燃烧室内的当量比和燃料反应性组合,从而允许主燃烧室内的燃烧开始和燃烧持续时间被最优化,以最大化循环效率和特定功率输出同时最小化排放。 ILBS的早期直接喷射功能还可以解决进入燃烧室的端口喷射的低挥发性燃料混合物的均匀性的潜在问题。

    MICRO-ELECTRO-MECHANICAL MICROPHONE AND MICRO-ELECTRO-MECHANICAL MICROPHONE CHIP INTEGRATED WITH FILTER
    4.
    发明申请
    MICRO-ELECTRO-MECHANICAL MICROPHONE AND MICRO-ELECTRO-MECHANICAL MICROPHONE CHIP INTEGRATED WITH FILTER 审中-公开
    微机电麦克风和微电子机械麦克风与滤芯一体化

    公开(公告)号:US20130075835A1

    公开(公告)日:2013-03-28

    申请号:US13241956

    申请日:2011-09-23

    IPC分类号: H01L29/84

    CPC分类号: H04R1/04 H04R2201/003

    摘要: A microelectromechanical microphone comprises a shell body, a microelectromechanical microphone chip and an integrated circuit. The shell body having a cavity and an opening, sound from outside enters into the cavity from the opening. The microelectromechanical microphone chip and the integrated circuit are disposed on a circuit layout inside the cavity. A filter is integrated with the microelectromechanical microphone chip at an appropriate location. Sound entered from the opening into the cavity is received by the microelectromechanical microphone chip, then the sound or audio signals are converted to electrical signals through the filter and the integrated circuit, to be transmitted to external electronic devices.

    摘要翻译: 微机电麦克风包括壳体,微电机麦克风芯片和集成电路。 具有空腔和开口的壳体,从外部的声音从开口进入空腔。 微电机麦克风芯片和集成电路设置在腔内的电路布局上。 滤波器在适当的位置与微机电麦克风芯片集成。 从开口进入空腔的声音由微机电麦克风芯片接收,然后声音或音频信号通过滤波器和集成电路转换为电信号,传输到外部电子设备。