METHOD OF BONDING SEMICONDUCTOR SUBSTRATE AND MEMS DEVICE
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United States of America Patent
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Dec 11, 2009
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Dec 11, 2009
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Abstract
A method of bonding a semiconductor substrate having a substrate 11 formed with a MEMS sensor and a substrate 21 having a bonding portion 30b film-formed by contacting an aluminum containing layer 31 with a germanium layer 32 on either a front surface or a rear surface and formed with an integrated circuit that controls the MEMS sensor, either a front surface or a rear surface of the substrate 11 is put to contact directly on the bonding portion of the substrate 21 to bond by eutectic bonding with pressurization and heating.
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