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. 17, 2026
Filed:
Apr. 15, 2024
Sandisk Technologies, Inc., Milpitas, CA (US);
Sandisk Technologies, Inc., Milpitas, CA (US);
Abstract
Technology for detection of defects in dummy memory holes in a 3D NAND memory structure. Dummy bit lines connected to dummy memory holes are used to detect defects associated with the dummy memory holes. A system may perform a stress test in which a stress voltage is applied to one or more word lines while another voltage (e.g., 0V) is applied to the dummy bit lines. The system may detect defects associated with the dummy memory holes by sensing the dummy bit lines. The dummy bit lines may be electrically connected with each other which reduces the amount of circuitry for providing a voltage to the dummy bit lines and/or sensing the dummy bit lines.