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Electronic device, resonator, oscillator and method for manufacturing electronic device

Image Number 7 for United States Patent #8129804.

An electronic device includes a substrate, a functional structural body formed on the substrate and a covering structure for defining a cavity part having the functional structural body disposed therein, wherein the covering structure is provided with a side wall provided on the substrate and comprising an interlayer insulating layer surrounding the cavity part and a wiring layer; a first covering layer covering an upper portion of the cavity part and having an opening penetrating through the cavity part and composed of a laminated structure including a corrosion-resistant layer; and a second covering layer for closing the opening.

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