Electro-thermal method to manufacture monocrystalline vertically oriented silicon channels for three-dimensional (3D) NAND memories

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United States of America Patent

PATENT NO 11521985
APP PUB NO 20210249437A1
SERIAL NO

17139823

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Abstract

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A method of forming a multitude of vertical NAND memory cells, includes, in part, forming a multitude of insulating materials on a silicon substrate, forming a trench in the insulating materials to expose a surface of the silicon substrate, depositing a layer of polysilicon along the sidewalls of the trench, filling the trench with oxide, forming a metal layer above the trench, and forming a mono-crystalline channel for the NAND memory cells by applying a voltage between the silicon substrate and the metal layer to cause the polysilicon sidewalls to melt. The melted polysilicon sidewalls is enable to recrystallize into the mono-crystalline channel.

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Patent Owner(s)

  • SYNOPSYS, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Amoroso, Salvatore Glasgow, GB 1 0
Moroz, Victor Mountain View, US 165 4311

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