Three dimensional hexagonal matrix memory array
First Claim
Patent Images
1. A nonvolatile memory device, comprising:
- a plurality of nonvolatile memory cells arranged in a substantially hexagonal pattern,wherein the nonvolatile memory cells are arranged in a plurality of subarrays which are substantially parallelogram shaped and have a non-square corner,wherein each subarray among the plurality of subarrays includes a plurality of nonvolatile memory cells arranged in a substantially hexagonal pattern;
wherein each of the plurality of subarrays has parallel sides that extend along a first direction and a non-parallel side that adjoins a respective driver circuit block for driving the subarray;
wherein the driver circuit blocks for the plurality of subarrays have a staggered layout such that a layout of each driver circuit block is shifted along the first direction from a horizontal line that is perpendicular to the first direction and passes through the non-square corner by a respective lateral offset distance; and
the lateral offset distances differ among one another among an entire set of driver circuit blocks that drive the plurality of subarrays.
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Abstract
A nonvolatile memory device includes a plurality of nonvolatile memory cells arranged in a substantially hexagonal pattern. The nonvolatile memory cells may be pillar shaped non-volatile memory cells which can be patterned using triple or quadruple exposure lithography or by using a self-assembling layer.
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Citations
20 Claims
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1. A nonvolatile memory device, comprising:
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a plurality of nonvolatile memory cells arranged in a substantially hexagonal pattern, wherein the nonvolatile memory cells are arranged in a plurality of subarrays which are substantially parallelogram shaped and have a non-square corner, wherein each subarray among the plurality of subarrays includes a plurality of nonvolatile memory cells arranged in a substantially hexagonal pattern; wherein each of the plurality of subarrays has parallel sides that extend along a first direction and a non-parallel side that adjoins a respective driver circuit block for driving the subarray; wherein the driver circuit blocks for the plurality of subarrays have a staggered layout such that a layout of each driver circuit block is shifted along the first direction from a horizontal line that is perpendicular to the first direction and passes through the non-square corner by a respective lateral offset distance; and the lateral offset distances differ among one another among an entire set of driver circuit blocks that drive the plurality of subarrays. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15)
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12. A nonvolatile memory device, comprising:
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a monolithic, three dimensional array of nonvolatile memory cells located over a silicon substrate and comprising a plurality of nonvolatile memory cells arranged in a substantially hexagonal pattern; and an integrated circuit comprising a driver circuit for the array of nonvolatile memory cells located in the silicon substrate or on a surface of the silicon substrate, and wherein the nonvolatile memory cells are arranged in a plurality of subarrays which are substantially parallelogram shaped and have a non-square corner; wherein each subarray among the plurality of subarrays includes a plurality of nonvolatile memory cells arranged in a substantially hexagonal pattern; wherein each of the plurality of subarrays has parallel sides that extend along a first direction and a non-parallel side that adjoins a respective driver circuit block for driving the subarray; wherein the driver circuit blocks for the plurality of subarrays have a staggered layout such that a layout of each driver circuit block is shifted along the first direction from a horizontal line that is perpendicular to the first direction and passes through the non-square corner by a respective lateral offset distance; and the lateral offset distances differ among one another among an entire set of driver circuit blocks that drive the plurality of subarrays. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification