Nonvolatile memory device and reading method thereof
First Claim
Patent Images
1. A method of reading a nonvolatile memory device, the method comprising:
- a read operation of reading data of a selected memory cell;
a first read retry operation of performing one or more read operations by changing a selection read voltage applied to the selected memory cell until the read operation succeeds, when it is detected that an error has occurred in the read operation; and
a second read retry operation of performing one or more read operations by changing a non-selection read voltage applied to non-selected memory cells until the read operation succeeds, when it is detected that an error has occurred in the first read retry operation.
1 Assignment
0 Petitions
Accused Products
Abstract
In a method of reading a nonvolatile memory device, the method comprising, a reading operation of reading data of a selected memory cell; and a read retry operation of performing one or more read operations by changing a non-selection read voltage applied to non-selected memory cells until the read operation succeeds, when it is detected that an error has occurred in the operation of reading data.
34 Citations
17 Claims
-
1. A method of reading a nonvolatile memory device, the method comprising:
-
a read operation of reading data of a selected memory cell; a first read retry operation of performing one or more read operations by changing a selection read voltage applied to the selected memory cell until the read operation succeeds, when it is detected that an error has occurred in the read operation; and a second read retry operation of performing one or more read operations by changing a non-selection read voltage applied to non-selected memory cells until the read operation succeeds, when it is detected that an error has occurred in the first read retry operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A nonvolatile memory device, comprising:
-
a memory cell array configured to comprise a plurality of memory cells arranged in intersection portions of word lines and bit lines; and a control logic configured to control a read operation of a selected memory cell among the plurality of memory cells, a first read retry operation of performing one or more read operations by changing a selection read voltage applied to the selected memory cell until the read operation succeeds, when it is detected that an error has occurred in the read operation, and a second read retry operation of performing one or more read operations by changing a non-selection read voltage applied to non-selected memory cells until the read operation succeeds, when it is detected that an error has occurred in the first read retry operation. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
Specification