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:
Mar. 11, 2025
Filed:
Dec. 08, 2022
SK Hynix Inc., Icheon-si, KR;
Hee Youl Lee, Icheon-si, KR;
SK hynix Inc., Icheon-si, KR;
Abstract
Provided herein is a semiconductor memory device and a method of operating the semiconductor memory device. The semiconductor memory device includes a memory block including memory cell strings, a voltage supply circuit configured to apply operating voltages to global drain select lines, global source select lines, and global word lines, and apply an erase voltage to bit lines or to the bit lines and a source line during an erase operation, a pass circuit configured to couple the global drain select lines, global source select lines, and global word lines to local drain select lines, local source select lines, and local word lines in response to a block select signal, and control logic configured to control the voltage supply circuit to apply a first operating voltage to the global drain select lines and thereafter apply a second operating voltage to the global drain select lines.