LINE DRIVERS THAT FIT WITHIN A SPECIFIED LINE PITCH
First Claim
Patent Images
1. A driver set for a cross point memory array comprising:
- a semiconductor substrate;
a plurality of line driver groups formed on the substrate, each line driver group having N line drivers;
a plurality of contiguous conductive lines, each conductive line electrically connected to both a line driver and a row of memory cells, each memory cell being fabricated to a width W;
wherein the line driver group has a width that is not greater than N×
W.
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Abstract
Line drivers that fit within a specified line pitch. One method of placing line drivers completely underneath a cross point array requires splitting the line driver up so that a portion of the line drivers is on a first side of the cross point array and the other portion is on the opposite side. However, using this technique requires that the width of the drivers is no larger than the width of the memory cells that are being driven. This can be accomplished by stacking transistors such that line drivers fit within a specified line pitch, but are as long as is necessary to include all the necessary circuitry.
43 Citations
21 Claims
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1. A driver set for a cross point memory array comprising:
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a semiconductor substrate;
a plurality of line driver groups formed on the substrate, each line driver group having N line drivers;
a plurality of contiguous conductive lines, each conductive line electrically connected to both a line driver and a row of memory cells, each memory cell being fabricated to a width W;
wherein the line driver group has a width that is not greater than N×
W. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. Circuitry for a cross point memory array comprising:
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a plurality of line driver groups that are stacked in a first direction, each line driver group having N line drivers that control N contiguous lines, each line driver being in one of N positions;
a primary decoder that is electrically connected to the plurality of line driver groups and is capable of selecting a single line driver group from the plurality of line driver groups;
a secondary decoder that is electrically connected to the plurality of line driver groups and is capable of selecting all the line drivers that are in a selected position from among the N positions; and
a memory array that is electrically connected to the plurality of line driver groups via the N contiguous lines in each line driver group;
wherein the size of the plurality of line driver groups in the first direction is less than or substantially the same as the size of the memory array in the first direction. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification