CMOS integrated circuits with bonded layers containing functional electronic devices

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United States of America Patent

PATENT NO 8716805
SERIAL NO

12237152

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Abstract

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A complementary metal oxide semiconductor (CMOS) circuit having integrated functional devices such as nanowires, carbon nanotubes, magnetic memory cells, phase change memory cells, ferroelectric memory cells or the like. The functional devices are integrated with the CMOS circuit. The functional devices are bonded (e.g. by direct bonding, anodic bonding, or diffusion bonding) to a top surface of the CMOS circuit. The functional devices are fabricated and processed on a carrier wafer, and an attachment layer (e.g. SiO2) is deposited over the functional devices. Then, the CMOS circuit and attachment layer are bonded. The carrier wafer is removed (e.g. by etching). The functional devices remain attached to the CMOS circuit via the attachment layer. Apertures are etched through the attachment layer to provide a path for electrical connections between the CMOS circuit and the functional devices.

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Patent Owner(s)

  • TOSHIBA AMERICA RESEARCH, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujita, Shinobu Tokyo, JP 110 1382

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