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:
Aug. 04, 2020

Filed:

Jun. 26, 2018
Applicant:

Sandisk Technologies Llc, Addison, TX (US);

Inventors:

Xiang Yang, Santa Clara, CA (US);

Dengtao Zhao, Los Gatos, CA (US);

Huai-Yuan Tseng, San Ramon, CA (US);

Deepanshu Dutta, Fremont, CA (US);

Zhongguang Xu, San Jose, CA (US);

Yanli Zhang, San Jose, CA (US);

Jin Liu, Fremont, CA (US);

Assignee:

SANDISK TECHNOLOGIES LLC, Addison, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/56 (2006.01); G11C 16/04 (2006.01); G11C 16/08 (2006.01); G11C 16/14 (2006.01); G11C 16/34 (2006.01); G11C 16/24 (2006.01);
U.S. Cl.
CPC ...
G11C 11/5628 (2013.01); G11C 11/5642 (2013.01); G11C 11/5671 (2013.01); G11C 16/0483 (2013.01); G11C 16/08 (2013.01); G11C 16/14 (2013.01); G11C 16/24 (2013.01); G11C 16/3436 (2013.01);
Abstract

Non-volatile memory strings may include multiple selection devices for coupling memory cell devices to a bit line. Different programming operations may be used to program various individual selection devices in a non-volatile memory cells string. For example, a control circuit may set a threshold voltage of a particular selection device to a value greater than a threshold voltage of another selection device. In another example, the control circuit may program the selection device using an initial sense time. Subsequent to programming the selection device using the initial sense time, the control circuit may program the selection device using a different sense time that is shorter than the initial sense time.


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