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:
Aug. 06, 2024
Filed:
Sep. 08, 2022
Yangtze Memory Technologies Co., Ltd., Wuhan, CN;
Zhipeng Dong, Wuhan, CN;
Ying Huang, Wuhan, CN;
Manxi Wang, Wuhan, CN;
Hongtao Liu, Wuhan, CN;
Ling Chu, Wuhan, CN;
Ke Liang, Wuhan, CN;
YANGTZE MEMORY TECHNOLOGIES CO., LTD., Wuhan, CN;
Abstract
This disclosure provides a memory device, a memory system, and an operation method. The memory device includes a memory array having a plurality of memory blocks and a control circuit coupled to the memory array and used to control the memory array. The control circuit is configured to determine a first average value of threshold voltages of bottom dummy cells in an unused memory block, determine a difference value between the first average value and a first reference value, and judge based on the difference value when bottom dummy cells in the memory block are to be programmed so that the first average value reaches a first threshold.