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    • 13. 发明授权
    • Microelectromechanical device manufacturing process
    • 微机电装置制造工艺
    • US06337027B1
    • 2002-01-08
    • US09410166
    • 1999-09-30
    • Kurt D. Humphrey
    • Kurt D. Humphrey
    • H01L2100
    • B81C1/00928B81C1/00849B81C2201/0138B81C2201/019
    • The present invention relates to micro electromechanical systems (MEMS) devices and more specifically to a process for manufacturing MEMS devices having at least one suspended structural element. The present invention seeks to provide an improved method for manufacture of MEMS devices having improved safety and increased yield and throughput compared to conventional EDP immersion process techniques. MEMS devices are made using a modified dissolution process that removes, in a selective etch step, inactive silicon to release an active silicon device from a sacrificial substrate. The present invention uses a selective etchant in conjunction with a commercial spray acid processing tool to provide a dissolution process with improved throughput, improved repeatable and uniform etch rates and reduction in the number of processing steps and chemical containment for improved safety. When the etch process is complete, the solvent spray is turned off and a spray of de-ionized water is directed onto composite structure to remove residual solvent without causing suspended elements to adhere to the support substrate.
    • 本发明涉及微机电系统(MEMS)装置,更具体地涉及一种用于制造具有至少一个悬挂结构元件的MEMS装置的方法。 本发明寻求提供一种用于制造具有改进的安全性并且与常规EDP浸渍工艺技术相比增加的产量和产量的MEMS装置的改进方法。 使用改进的溶解过程制造MEMS器件,其在选择性蚀刻步骤中去除非活性硅以从牺牲衬底释放活性硅器件。 本发明使用选择性蚀刻剂与商业喷雾酸处理工具结合,以提供具有改善的生产量,改进的可重复和均匀蚀刻速率的溶解过程以及减少加工步骤和化学容纳物以提高安全性。 当蚀刻过程完成时,关闭溶剂喷雾,并将去离子水的喷雾引导到复合结构上以除去残留的溶剂,而不会使悬浮的元素粘附到载体基底上。