Invention Grant
- Patent Title: Memory array comprising strings of memory cells and method used in forming a memory array comprising strings of memory cells
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Application No.: US17006634Application Date: 2020-08-28
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Publication No.: US11683932B2Publication Date: 2023-06-20
- Inventor: John D. Hopkins , Alyssa N. Scarbrough
- Applicant: Micron Technology, Inc.
- Applicant Address: US ID Boise
- Assignee: Micron Technology, Inc.
- Current Assignee: Micron Technology, Inc.
- Current Assignee Address: US ID Boise
- Agency: Wells St. John P.S.
- Main IPC: H01L27/11582
- IPC: H01L27/11582 ; H10B41/27 ; H10B41/10 ; H10B43/10 ; H10B43/27
Abstract:
A method used in forming a memory array comprising strings of memory cells comprises forming a stack comprising vertically-alternating first tiers and second tiers. The stack comprises laterally-spaced memory-block regions that have horizontally-elongated trenches there-between. Channel openings extend through the first tiers and the second tiers in the memory-block regions. Channel material of channel-material strings is formed in the channel openings and the channel material is formed in the horizontally-elongated trenches. The channel material is removed from the horizontally-elongated trenches and the channel material of the channel-material strings is left in the channel openings. After removing the channel material from the horizontally-elongated trenches, intervening material is formed in the horizontally-elongated trenches laterally-between and longitudinally-along immediately-laterally-adjacent of the memory-block regions. Other embodiments, including structure independent of method, are disclosed.
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