Leakage detection for three-dimensional NAND memory

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United States of America Patent

PATENT NO 11923032
APP PUB NO 20220399073A1
SERIAL NO

17518284

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Abstract

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The present disclosure provides a circuit for detecting leakage between word lines in a memory device. The circuit includes a first and a second coupling capacitor. A first terminals of the first and second coupling capacitors are connected to a first word line and a second word line, respectively. The first terminals of the first and second coupling capacitors are also connected to a first and a second voltage supply, respectively. The circuit further includes a comparator, wherein a first input of the comparator is connected to a second terminal of the first coupling capacitor and a second input of the comparator is connected to a second terminal of the second coupling capacitor. The comparator is configured to send alarm signal when a differential voltage between the first input and the second input of the comparator is larger than a hysteresis level of the comparator.

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Patent Owner(s)

  • YANGTZE MEMORY TECHNOLOGIES CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Albert I Ming Hubei, CN 1 0
She, Min Hubei, CN 21 139
Yang, Kun Hubei, CN 242 746

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