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    • 4. 发明申请
    • ANTI-REFLECTIVE SUB-WAVELENGH STRUCTURES FOR SILICON WAFERS
    • 硅反射反射波浪形结构
    • WO2004099064A1
    • 2004-11-18
    • PCT/US2004/012088
    • 2004-04-19
    • RAYTHEON COMPANY
    • SYLLAIOS, Athanasios, J.GOOCH, Roland, W.SCHIMERT, Thomas, R.MEISSNER, Edward, G.
    • B81B7/00
    • G02B1/118B81B7/00
    • Certain MEMS devices require a vacuum environment in order to obtain maximum performance. The vacuum package also provides protection in an optimal operating environment for the MEMS device. Examples of these MEMS devices are infrared MEMS such as bolometers that in addition may require an optically transparent cover, or lid structure. These devices wafer lids are often coated with an anti-reflective coating to reduce the reflectives properties and increase the optical transmission properties of the device wafer lid. Another method for increasing the optical transmission characteristics of a device wafer lid is to provide a method for etching sub wavelenght structures ( i.e. periodic diffraction structures ) on one or both surfaces of a device wafer lid prior to mating a lid wafer with a device wafer.
    • 某些MEMS器件需要真空环境才能获得最大的性能。 真空封装还在MEMS器件的最佳工作环境中提供保护。 这些MEMS器件的示例是诸如辐射热计的红外MEMS,其另外可能需要光学透明盖或盖结构。 这些装置晶片盖通常涂覆有抗反射涂层以减少反射率特性并增加装置晶片盖的光学透射性能。 用于增加器件晶片盖的光学传输特性的另一种方法是提供一种在将盖晶片与器件晶片配合之前,在器件晶片盖的一个或两个表面上蚀刻次波长结构(即,周期性衍射结构)的方法。