Memory Arrays Comprising Strings Of Memory Cells And Methods Used In Forming A Memory Array Comprising Strings Of Memory Cells
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Dec 9, 2024
filing date -
Dec 9, 2024
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Abstract
A memory array comprising strings of memory cells comprises laterally-spaced memory blocks individually comprising a vertical stack comprising alternating insulative tiers and conductive tiers above a conductor tier. Strings of memory cells comprise channel-material strings that extend through the insulative tiers and the conductive tiers. The channel-material strings directly electrically couple to conductor material of the conductor tier. The insulative tier immediately-above a lowest of the conductive tiers comprises a lower first insulating material and an upper second insulating material above the upper first insulating material. The upper second insulating material is of different composition from that of the lower first insulating material. Intervening material is laterally-between and longitudinally-along immediately-laterally-adjacent of the memory blocks. Other embodiments, including method, are disclosed.
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