Nonvolatile memory devices
First Claim
1. A nonvolatile memory device comprising:
- a memory cell array including a plurality of mats, each of the plurality of mats including a plurality of cell strings, wherein;
a first cell string of a first mat of the plurality of mats is connected to a plurality of first word-lines, a first bit-line and a first string selection line,a second cell string of a second mat of the plurality of mats is connected to a plurality of second word-lines, a second bit-line and a second string selection line,the first and second cell strings are located perpendicular to a substrate respectively, andeach of the first and second cell strings includes at least one ground selection transistor, a plurality of memory cells, and at least one string selection transistor coupled in series with each other; and
a row decoder connected to the plurality of first and second word-lines and the first and second string selection lines, and configured to apply corresponding word-line voltages to the plurality of first and second word-lines,wherein the row decoder is configured to;
apply a first voltage to a third word-line among the plurality of first and second word-lines for a first period of time when a first operation of the nonvolatile memory device is performed for only one of the first and second mats, andapply a second voltage to the third word-line for a second period of time longer than the first period of time when the first operation is performed for both of the first and second mats simultaneously.
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Abstract
A nonvolatile memory device includes a memory cell array and a row decoder. The memory cell array includes a plurality of mats. A first cell string of first mat is connected to a plurality of first word-lines, a first bit-line and a first string selection line. A second cell string of second mat is connected to a plurality of second word-lines, a second bit-line and a second string selection line. Each of the first and second cell strings includes a ground selection transistor, memory cells, and a string selection transistor coupled in series. The row decoder applies a first voltage to a third word-line among the plurality of first and second word-lines for a first period of time in a single mat mode and to apply a second voltage to the third word-line for a second period of time longer than the first period of time in a multi-mat mode.
127 Citations
20 Claims
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1. A nonvolatile memory device comprising:
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a memory cell array including a plurality of mats, each of the plurality of mats including a plurality of cell strings, wherein; a first cell string of a first mat of the plurality of mats is connected to a plurality of first word-lines, a first bit-line and a first string selection line, a second cell string of a second mat of the plurality of mats is connected to a plurality of second word-lines, a second bit-line and a second string selection line, the first and second cell strings are located perpendicular to a substrate respectively, and each of the first and second cell strings includes at least one ground selection transistor, a plurality of memory cells, and at least one string selection transistor coupled in series with each other; and a row decoder connected to the plurality of first and second word-lines and the first and second string selection lines, and configured to apply corresponding word-line voltages to the plurality of first and second word-lines, wherein the row decoder is configured to; apply a first voltage to a third word-line among the plurality of first and second word-lines for a first period of time when a first operation of the nonvolatile memory device is performed for only one of the first and second mats, and apply a second voltage to the third word-line for a second period of time longer than the first period of time when the first operation is performed for both of the first and second mats simultaneously. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A nonvolatile memory device comprising:
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a memory cell region including a first metal pad; a peripheral circuit region including a second metal pad and vertically connected to the memory cell region by the first metal pad and the second metal pad; a memory cell array in the memory cell region, the memory cell array including a plurality of mats, each of the plurality of mats including a plurality of cell strings, wherein; a first cell string of a first mat of the plurality of mats is connected to a plurality of first word-lines, a first bit-line and a first string selection line, a second cell string of a second mat of the plurality of mats is connected to a plurality of second word-lines, a second bit-line and a second string selection line, the first and second cell strings are located perpendicular to a substrate respectively, and each of the first and second cell strings includes at least one ground selection transistor, a plurality of memory cells, and at least one string selection transistor coupled in series with each other; and a row decoder in the peripheral circuit region, connected to the plurality of first and second word-lines, the first and second string selection lines, and configured to apply corresponding word-line voltages to the plurality of first and second word-lines, wherein the row decoder is configured to; apply a first voltage to a third word-line among the plurality of first and second word-lines through the first metal pad and the second metal pad for a first period of time when a first operation of the nonvolatile memory device is performed for only one of the first and second mats, and apply a second voltage to the third word-line through the first metal pad and the second metal pad for a second period of time different from the first period of time when the first operation is performed for both of the first and second mats simultaneously. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification