Nonvolatile memory device
First Claim
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1. A nonvolatile memory device comprising:
- first word lines and second word lines;
a first memory block including first sets of memory cells and electrically connected to the first word lines, the memory cells of each first set being disposed at the same level in the device as one another and the first sets of memory cells being stacked vertically one atop another such that the first memory block contains a plurality of memory cells at each of a plurality of different levels arrayed in a vertical direction in the device;
a second memory block including second sets of memory cells and electrically connected to the second word lines, the second memory block adjacent the first memory block in a first horizontal direction, the memory cells of each second set being disposed at the same level in the device as one another and the second sets of memory cells being stacked vertically one atop another such that the second memory block also contains a plurality of memory cells at each of a plurality of levels in the device;
first pass transistors enabling a selection of the first word lines; and
second pass transistors enabling a selection of the second word lines,wherein the first pass transistors and the second pass transistors are disposed beside the memory blocks and are arrayed two-dimensionally, in parallel rows, in a horizontal plane perpendicular to the vertical direction, each of the rows containing a plurality of respective ones of the pass transistors, the rows spaced apart from each other in the first horizontal direction, and each of the rows of the pass transistors extending in a second horizontal direction different from the first horizontal direction,the memory cells of the first and second memory blocks are arrayed in parallel rows spaced from each other in the first horizontal direction, and each of the rows of memory cells containing a plurality of respective ones of the memory cells and extending in the second horizontal direction, andeach of the first pass transistors is located between each of the second pass transistors and the first memory block.
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Abstract
A nonvolatile memory device includes a first memory block connected to first word lines, a second memory block arranged in a direction perpendicular to the first memory block and is connected to second word lines, first pass transistors for enabling the first word lines, and second pass transistors for enabling the second word lines. The first and second pass transistors are arranged in a horizontal direction with respect to the first and second memory blocks.
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Citations
19 Claims
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1. A nonvolatile memory device comprising:
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first word lines and second word lines; a first memory block including first sets of memory cells and electrically connected to the first word lines, the memory cells of each first set being disposed at the same level in the device as one another and the first sets of memory cells being stacked vertically one atop another such that the first memory block contains a plurality of memory cells at each of a plurality of different levels arrayed in a vertical direction in the device; a second memory block including second sets of memory cells and electrically connected to the second word lines, the second memory block adjacent the first memory block in a first horizontal direction, the memory cells of each second set being disposed at the same level in the device as one another and the second sets of memory cells being stacked vertically one atop another such that the second memory block also contains a plurality of memory cells at each of a plurality of levels in the device; first pass transistors enabling a selection of the first word lines; and second pass transistors enabling a selection of the second word lines, wherein the first pass transistors and the second pass transistors are disposed beside the memory blocks and are arrayed two-dimensionally, in parallel rows, in a horizontal plane perpendicular to the vertical direction, each of the rows containing a plurality of respective ones of the pass transistors, the rows spaced apart from each other in the first horizontal direction, and each of the rows of the pass transistors extending in a second horizontal direction different from the first horizontal direction, the memory cells of the first and second memory blocks are arrayed in parallel rows spaced from each other in the first horizontal direction, and each of the rows of memory cells containing a plurality of respective ones of the memory cells and extending in the second horizontal direction, and each of the first pass transistors is located between each of the second pass transistors and the first memory block. - View Dependent Claims (2, 3, 4, 5)
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6. A nonvolatile memory device comprising:
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a plurality of word lines; a group of memory blocks connected to the plurality of word lines, each of the memory blocks including sets of memory cells, the memory cells of each set being disposed at the same level in the device as one another and the sets of memory cells being stacked vertically one atop such that each of the memory blocks contains a plurality of memory cells at each of a plurality of different levels arrayed in a vertical direction in the device; and a plurality of pass transistor units, wherein each of the pass transistor units is disposed beside the group of memory blocks so as to face the group of memory blocks in a horizontal direction, and each of the pass transistor units comprises a plurality of pass transistors, the pass transistors constituting the pass transistor units collectively are disposed in a two-dimensional array in a horizontal plane perpendicular to the vertical direction, and the pass transistor units enable the memory blocks, respectively. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A nonvolatile memory device comprising:
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a memory cell array comprising blocks of cell strings, the blocks disposed side by side in a first direction in a horizontal plane, and each of the cell strings including a stack of respective memory transistors disposed one on another in a vertical direction perpendicular to the horizontal plane, and wherein each of the blocks has a plurality of the memory transistors located at each of a plurality of different levels arrayed in the vertical direction in the memory device, groups of word lines connected to the blocks, respectively, wherein the word lines of each group are electrically connected to the memory transistors of a respective one of the blocks of cell strings; a block gating unit including a plurality of circuits of pass transistors, and wherein each of the circuits of pass transistors is connected to one of the blocks of cell strings, respective ones of the pass transistors of the block gating unit are connected to the groups of word lines, each of the circuits of pass transistors is disposed beside the blocks of cell strings along a second direction extending perpendicular to the first direction and the vertical direction, and all of said pass transistors are disposed at the same level as one another in the memory device as arrayed in rows and columns in the first and second directions, respectively. - View Dependent Claims (16, 17, 18, 19)
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Specification