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    • 2. 发明授权
    • Capacitive position sensing in an electrostatic micromotor
    • 静电微电机中的电容位置检测
    • US07898267B2
    • 2011-03-01
    • US12573027
    • 2009-10-02
    • Bruno MurariUbaldo MastromatteoGiulio Ricotti
    • Bruno MurariUbaldo MastromatteoGiulio Ricotti
    • H02N1/00G01R27/26
    • H02N1/006
    • An electrostatic micromotor is provided with a fixed substrate, a mobile substrate facing the fixed substrate, and electrostatic-interaction elements enabling a relative movement of the mobile substrate with respect to the fixed substrate in a movement direction; the electrostatic micromotor is also provided with a capacitive position-sensing structure configured to enable sensing of a relative position of the mobile substrate with respect to the fixed substrate in the movement direction. The capacitive position-sensing structure is formed by sensing indentation, extending within the mobile substrate from a first surface thereof, and by first sensing electrode, facing, in given operating condition, the sensing indentation.
    • 静电微电机设置有固定基板,面向固定基板的移动基板和静电相互作用元件,其能够使移动基板相对于固定基板在移动方向上相对移动; 静电微型电动机还设置有电容位置感测结构,其被配置为能够在移动方向上感测移动衬底相对于固定衬底的相对位置。 电容式位置检测结构通过感测从移动基板的第一表面延伸的凹陷形成,并且通过第一感测电极,在给定的操作条件下面对感测压痕。
    • 8. 发明授权
    • Micromachined oscillating element, in particular a mirror for optical switches
    • 微机械振荡元件,特别是光开关的反射镜
    • US06927470B2
    • 2005-08-09
    • US10606660
    • 2003-06-25
    • Bruno MurariUbaldo MastromatteoPaolo Ferrari
    • Bruno MurariUbaldo MastromatteoPaolo Ferrari
    • G02B26/00G02B27/09H01L31/0232H01L31/0328
    • G02B27/0994
    • A micromachined device made of semiconductor material is formed by: a semiconductor body; an intermediate layer set on top of the semiconductor body; and a substrate, set on top of the intermediate layer. A cavity extends in the intermediate layer and is delimited laterally by bottom fixed regions, at the top by the substrate, and at the bottom by the semiconductor body. The bottom fixed regions form fixed electrodes, which extend in the intermediate layer towards the inside of the cavity. An oscillating element is formed in the substrate above the cavity and is separated from top fixed regions through trenches, which extend throughout the thickness of the substrate. The oscillating element is formed by an oscillating platform set above the cavity, and by mobile electrodes, which extend towards the top fixed regions in a staggered way with respect to the fixed electrodes. The fixed electrodes and mobile electrodes are thus comb-fingered in plan view but formed on different levels.
    • 由半导体材料制成的微机械加工装置由半导体本体形成, 设置在半导体本体顶部的中间层; 以及设置在中间层顶部的基板。 空腔在中间层中延伸并且由底部固定区域在顶部限定,在顶部由衬底限定,并且在底部由半导体本体限定。 底部固定区域形成固定电极,其在中间层中延伸到空腔的内部。 振荡元件形成在空腔上方的衬底中,并且通过沟槽与顶部固定区域分离,其延伸贯穿衬底的厚度。 振荡元件由设置在空腔上方的振荡平台和通过相对于固定电极以交错方式朝着顶部固定区域延伸的移动电极形成。 因此,固定电极和移动电极在平面图中梳理,但形成在不同的水平上。