Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
April 25, 2023
0Patent Application Number
168837210
Date Filed
May 26, 2020
0Patent Primary Examiner
CPC Code
A semiconductor memory device includes a first source layer, a second source layer on the first source layer, a stack structure over the second source layer, and a common source line penetrating the stack structure. The second source layer includes a protective layer in contact with the common source line and a conductive layer surrounding the protective layer.
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