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:
May. 21, 2019
Filed:
Oct. 31, 2018
SK Hynix Inc., Icheon-si, Gyeonggi-do, KR;
Sung Ho Kim, Cheongju-si, KR;
Min Sang Park, Cheongju-si, KR;
Yong Seok Suh, Daegu, KR;
Kyong Taek Lee, Sejong-si, KR;
Gil Bok Choi, Daejeon, KR;
SK hynix Inc., Icheon-si, Gyeonggi-do, KR;
Abstract
Provided herein may be a semiconductor memory device that may include a plurality of memory blocks configured to share bit lines and a common source line, a voltage generation circuit configured to apply an erase voltage to the common source line, and operation voltages to word lines and select lines of the plurality of memory blocks during an erase operation, a read and write circuit configured to check a program and erase status of an unselected memory block of the plurality of memory blocks during the erase operation, and a control logic configured to control the voltage generation circuit so that the operation voltages applied to select lines of a selected memory block are controlled in accordance with a result of checking the program and erase status of the unselected memory block during the erase operation.