Apparatus and method of three dimensional conductive lines
First Claim
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1. An inter-tier memory column, comprising:
- a first segment disposed within a first tier of a three-dimensional integrated circuit (3D IC), the first segment comprising a first bit line, a first bit line bar, and a first plurality of memory cells, said first plurality of memory cells electrically connected to said first bit line and said first bit line bar;
a second segment disposed within a second tier of the 3D IC, comprising a second bit line, a second bit line bar, and a second plurality of memory cells, said second plurality of memory cells electrically connected to said second bit line and said second bit line bar; and
wherein said first bit line is electrically connected to said second bit line by a conductive member extending continuously from said first bit line to said second bit line, and said first bit line bar is electrically connected to said second bit line bar by a conductive member extending continuously from said first bit line bar to said second bit line bar.
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Abstract
An apparatus and method of three dimensional conductive lines comprising a first memory column segment in a first tier, a second memory column segment in a second tier, and conductive lines connecting the first memory column segment to the second memory column segment. In some embodiments a conductive line is disposed in the first tier on a first side of the memory column and in the second tier on a second side of the memory column.
21 Citations
14 Claims
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1. An inter-tier memory column, comprising:
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a first segment disposed within a first tier of a three-dimensional integrated circuit (3D IC), the first segment comprising a first bit line, a first bit line bar, and a first plurality of memory cells, said first plurality of memory cells electrically connected to said first bit line and said first bit line bar; a second segment disposed within a second tier of the 3D IC, comprising a second bit line, a second bit line bar, and a second plurality of memory cells, said second plurality of memory cells electrically connected to said second bit line and said second bit line bar; and wherein said first bit line is electrically connected to said second bit line by a conductive member extending continuously from said first bit line to said second bit line, and said first bit line bar is electrically connected to said second bit line bar by a conductive member extending continuously from said first bit line bar to said second bit line bar. - View Dependent Claims (2, 3, 4, 5)
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6. A three-dimensional integrated circuit (3D IC) comprising:
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a first memory cell segment and a second memory cell segment, disposed within a first tier of the 3D IC; a third memory cell segment and a fourth memory cell segment, disposed within a second tier of the 3D IC; wherein each of said first, second, third, and fourth memory cell segments comprise a bit line, a bit line bar, and at least one memory cell electrically connected to said bit line and said bit line bar; and wherein a first conductive member extends continuously from a bit line in the first tier to a bit line in the second tier, and wherein a second conductive member extends continuously from a bit line bar in the first tier to a bit line bar in the second tier. - View Dependent Claims (7, 8, 9, 10)
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11. A three-dimensional integrated circuit (3D IC) comprising:
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a first memory cell segment and a second memory cell segment, disposed within a first tier of the 3D IC; a third memory cell segment and a fourth memory cell segment, disposed within a second tier of the 3D IC; wherein each of said first, second, third, and fourth memory cell segments comprise a bit line, a bit line bar, and at least one memory cell electrically connected to said bit line and said bit line bar; wherein each of said bit lines are aligned parallel to and disposed on a first side of a first longitudinal axis and each of said bit lines bar are aligned parallel to and disposed on a second side of said first longitudinal axis; and wherein a first conductive member extends continuously from a bit line in the first tier to a bit line in the second tier, and wherein a second conductive member extends continuously from a bit line bar in the first tier to a bit line bar in the second tier. - View Dependent Claims (12, 13, 14)
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Specification