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. 12, 2025
Filed:
Jul. 25, 2023
Sandisk Technologies Llc, Addison, TX (US);
Naohiro Hosoda, Yokkaichi, JP;
Hiroyuki Ogawa, Nagoya, JP;
Sandisk Technologies, Inc., Milpitas, CA (US);
Abstract
A memory system having an x-direction (bit line direction) divided sub-block mode. Each block is divided in a y-direction and in the x-direction into a number of groups of contiguous NAND strings that are referred to as XY sub-blocks. The memory system performs a memory operation in parallel in multiple XY sub-blocks in a block while inhibiting the memory operation in the other XY sub-blocks in the block. Each XY sub-block for which the memory operation is performed has its NAND strings connected to a different set of contiguous bit lines. In an aspect the memory operation is a program operation with selected memory cells in each of the multiple XY sub-blocks programmed in parallel while inhibiting programming of all memory cells in all other XY sub-blocks in the block. In one aspect, the memory operation is an erase operation.