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:
Dec. 04, 2007
Filed:
Jul. 01, 2005
Applicant:
N. Johan Knall, Sunnyvale, CA (US);
Inventor:
N. Johan Knall, Sunnyvale, CA (US);
Assignee:
Sandisk 3D LLC, Milpitas, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/36 (2006.01); G11C 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A memory array having memory cells each comprising a diode and a phase change material or antifuse is reliably programmed by maintaining all word lines and bit lines connected to unselected memory cells at intermediate voltages and applying voltages to place the diode of a selected cell or cells in a reverse biased state and sufficient to program the phase change material or antifuse. Thus leakage through unselected cells is low so power wasted is small, and assurance is high that no unselected memory cells are disturbed.