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:
Feb. 02, 2021
Filed:
Sep. 12, 2019
Sandisk Technologies Llc, Addison, TX (US);
Jianzhi Wu, Milpitas, CA (US);
Xiang Yang, Santa Clara, CA (US);
SanDisk Technologies LLC, Addison, TX (US);
Abstract
An apparatus comprising strings of non-volatile memory cells is disclosed. Each string comprises non-volatile memory cells, an operative select gate, and a dummy select gate. The apparatus comprises a select line connected to the operative select gate of each string, and a dummy line connected to the dummy select gate of each string. The dummy line is an immediate neighbor to the select line. The apparatus comprises a control circuit configured to apply a voltage waveform to the select line while the dummy line is floating. The control circuit is configured to detect a floating voltage on the dummy line while applying the voltage waveform to the select line. The control circuit is configured to determine a condition of the voltage waveform at a target location on the select line based on the floating voltage on the dummy line.