The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 2025
Filed:
Apr. 25, 2023
Yangtze Memory Technologies Co., Ltd., Wuhan, CN;
Shan Li, Wuhan, CN;
Kaikai You, Wuhan, CN;
Ying Cui, Wuhan, CN;
Jianquan Jia, Wuhan, CN;
Kaiwei Li, Wuhan, CN;
An Zhang, Wuhan, CN;
YANGTZE MEMORY TECHNOLOGIES CO., LTD., Wuhan, CN;
Abstract
In some aspects, a memory device is provided. The memory device includes a plurality of memory strings and a peripheral circuit. One of the memory strings includes memory cells, a select transistor coupled to a select line and a bit line, and a dummy cell coupled to a dummy word line and arranged between the select transistor and the memory cells. The peripheral circuit is coupled to the memory strings and configured to, in a pre-pulse period of a program operation, maintain a first voltage on the select line to retain an on-state of the select transistor and apply a second voltage to the dummy word line to turn off the dummy cell. After applying the second voltage to the dummy word line, the peripheral circuit is further configured to apply a third voltage to the select line to turn off the select transistor.