Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 24, 2015
Patent Application Number
14290070
Date Filed
May 29, 2014
Patent Citations Received
Patent Primary Examiner
Patent abstract
When a bad block is found in a nonvolatile memory array, the block is marked as a bad block so that it is not subsequently used. The block is also reconfigured as a bad block by increasing resistance of vertical NAND strings in the block by increasing threshold voltage of at least some transistors along vertical NAND strings, for example, select transistors or memory cell transistors.
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