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:
Nov. 08, 2016
Filed:
May. 16, 2016
Sandisk Technologies Llc, Plano, TX (US);
Kenneth Louie, Sunnyvale, CA (US);
Khanh Nguyen, Milpitas, CA (US);
SanDisk Technologies LLC, Plano, TX (US);
Abstract
When performing an erase on a flash type non-volatile memory with a NAND type of structure, techniques are presented for inhibiting erase on selected word lines, select lines of programmable select transistors, or some combination of these. The voltage along the selected control lines are initially ramped up by the level on a corresponding input line, but then have their voltage raised to an erase inhibit level by capacitive coupling with the well structure. The level of these input signals are ramped up with the erase voltage applied to the well structure, but with a delay based upon the coupling ratio between the control line and the well.