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.

Date of Patent:
Oct. 27, 2026

Filed:

Aug. 19, 2024
Applicant:

Sandisk Technologies, Inc., Milpitas, CA (US);

Inventors:

Albert Bor Kai Chen, Milpitas, CA (US);

Longju Liu, Fremont, CA (US);

Jiahui Yuan, Fremont, CA (US);

Anirudh Amarnath, San Jose, CA (US);

Assignee:

Sandisk Technologies, Inc., Milpitas, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 29/12 (2006.01); G11C 7/06 (2006.01); G11C 7/22 (2006.01); G11C 11/407 (2006.01); G11C 11/4091 (2006.01); G11C 11/417 (2006.01); G11C 11/419 (2006.01); G11C 13/00 (2006.01); G11C 16/26 (2006.01); G11C 16/32 (2006.01);
U.S. Cl.
CPC ...
G11C 29/12005 (2013.01); G11C 7/065 (2013.01); G11C 7/22 (2013.01); G11C 11/407 (2013.01); G11C 11/4091 (2013.01); G11C 11/417 (2013.01); G11C 11/419 (2013.01); G11C 13/004 (2013.01); G11C 13/0061 (2013.01); G11C 16/26 (2013.01); G11C 16/32 (2013.01); G11C 29/1201 (2013.01); G11C 29/12015 (2013.01);
Abstract

Technology for multi sense time valley search in NAND memory. The memory cells are sensed multiple times for a single charging of the sense nodes. Also, the voltage to the control gates of the memory cells may be held at the same magnitude for each sensing. Optionally, the control gate voltage may be changed with the memory cells again being sensed multiple times for a single charging of the sense nodes. Each sensing will test for a different Vt in the valley scan. A valley point between two Vt distributions is determined based on the sensing. Substantial time may be saved while still providing for a precise search for the valley point.


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Chen, Albert Bor Kai. (2026). Multi sense time valley search in nand (U.S. Patent No. 12776383). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12776383

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