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    • 8. 发明专利
    • Sensor device, motion sensor, and electronic apparatus
    • 传感器装置,运动传感器和电子装置
    • JP2012079750A
    • 2012-04-19
    • JP2010220798
    • 2010-09-30
    • Seiko Epson Corpセイコーエプソン株式会社
    • CHIBA SEIICHIKOJIMA SHUJITOODA HISAYUKISHINDO AKINORIHANAOKA TERUNAOYAMAZAKI YASUO
    • H01L23/02
    • G01P15/097B81B7/0006G01C19/5783H01L2224/48091H01L2924/00014
    • PROBLEM TO BE SOLVED: To provide a sensor device having stable electrical characteristics by preventing laser beams used for tuning a sensor element from melting a stress relaxation layer.SOLUTION: A sensor device 1 comprises: a first electrode 11 provided on an active surface 10a of a silicon substrate 10; an external connection terminal 12 electrically connected to the first electrode; a stress relaxation layer 15 provided between the silicon substrate and the external connection terminal; a connection terminal 13 provided on the active surface of the silicon substrate; and a vibration gyro element 20 having weight parts 26a, 26b, 27a, 27b, 28a, and 28b as mass adjustment parts. The vibration gyro element is held above the silicon substrate by the connection between a connection electrode and the external connection terminal, and includes a melting protection layer 42 formed between the stress relaxation layer and the mass adjustment parts where they overlap each other in plan view.
    • 要解决的问题:通过防止用于调谐传感器元件的激光束熔化应力松弛层来提供具有稳定电特性的传感器装置。 解决方案:传感器装置1包括:设置在硅衬底10的有源表面10a上的第一电极11; 电连接到第一电极的外部连接端子12; 设置在硅衬底和外部连接端子之间的应力松弛层15; 设置在硅衬底的有源表面上的连接端子13; 具有作为质量调整部的重量部26a,26b,27a,27b,28a,28b的振动陀螺元件20。 振动陀螺元件通过连接电极和外部连接端子之间的连接被保持在硅衬底上,并且包括在应力松弛层和质量调节部分之间形成的熔融保护层42,它们在平面图中彼此重叠。 版权所有(C)2012,JPO&INPIT