Volentine, Whitt & Francos, PLLC
Non-volatile memory device, operating method thereof, and storage device including the non-volatile memory device
A memory device includes multiple word lines. A method of operating the memory device includes: performing a first dummy read operation, with respect to first memory cells connected to a first word line among the word lines, by applying a dummy read voltage, having an offset level of a first level, to the first word line; determining, based on a result of the performing of the first dummy read operation, degradation of a threshold voltage distribution of the first memory cells; adjusting an offset level of the dummy read voltage as a second level, based on a result of the determining of the threshold voltage distribution; and performing a second dummy read operation with respect to second memory cells connected to a second word line among the word lines, by applying a dummy read voltage, having the offset level adjusted as the second level, to the second word line among the word lines.
Samsung Electronics Co., Ltd.
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Seung-Jae Chul-Bum Seung-Bum Han-Jun
Lee Kim Kim Lee