Nonvolatile semiconductor memory device and data erase method thereof

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9490019
APP PUB NO 20150228347A1
SERIAL NO

14694432

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Abstract

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A nonvolatile semiconductor memory device according to an aspect includes a semiconductor substrate, a memory cell array, memory strings, drain side selection transistors, source side selection transistors, word lines, bit lines, a source line, a drain side selection gate line, a source side selection gate line, and a control circuit. The control circuit applies a first voltage to a selected bit line, thereby executing an erase operation on a selected memory string connected to the selected bit line, and the control circuit applies a second voltage to a non-selected bit line, thereby prohibiting the erase operation for the selected memory string connected to the non-selected bit line. The first voltage is more than the second voltage.

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Patent Owner(s)

  • TOSHIBA MEMORY CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Itagaki, Kiyotaro Naka-gun, JP 27 843

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