公开(公告)号：US20230164991A1

公开(公告)日：2023-05-25

申请号：US18094906

申请日：2023-01-09

Applicant: Micron Technology, Inc.

Inventor： Jordan D. Greenlee ,  Nancy M. Lomeli ,  John D. Hopkins ,  Jiewei Chen ,  Indra V. Chary ,  Jun Fang ,  Vladimir Samara ,  Kaiming Luo ,  Rita J. Klein ,  Xiao Li ,  Vinayak Shamanna

IPC: H10B41/27 ,  G11C5/06 ,  H01L21/306 ,  G11C16/04 ,  G11C5/02 ,  H10B43/27 ,  H10B43/30

CPC classification number: H10B41/27 ,  G11C5/06 ,  H01L21/30625 ,  G11C16/0408 ,  G11C16/0466 ,  G11C5/025 ,  H10B43/27 ,  H10B43/30

Abstract: Some embodiments include an integrated assembly having a source structure, and having a stack of alternating conductive levels and insulative levels over the source structure. Cell-material-pillars pass through the stack. The cell-material-pillars are arranged within a configuration which includes a first memory-block-region and a second memory-block-region. The cell-material-pillars include channel material which is electrically coupled with the source structure. Memory cells are along the conductive levels and include regions of the cell-material-pillars. A panel is between the first and second memory-block-regions. The panel has a first material configured as a container shape. The container shape defines opposing sides and a bottom of a cavity. The panel has a second material within the cavity. The second material is compositionally different from the first material. Some embodiments include methods of forming integrated assemblies.

公开(公告)号：US20230164985A1

公开(公告)日：2023-05-25

申请号：US17533580

申请日：2021-11-23

Applicant: Micron Technology, Inc.

Inventor： Jordan D. Greenlee ,  Allen McTeer ,  Rita J. Klein ,  John D. Hopkins ,  Nancy M. Lomeli ,  Xiao Li ,  Alyssa N. Scarbrough ,  Jiewei Chen ,  Naiming Liu ,  Shuangqiang Luo ,  Silvia Borsari ,  John Mark Meldrim ,  Shen Hu

IPC: H01L27/11556 ,  H01L27/11524 ,  H01L27/1157 ,  H01L27/11582

CPC classification number: H01L27/11556 ,  H01L27/11524 ,  H01L27/1157 ,  H01L27/11582

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. Strings of memory cells comprise channel-material strings that extend through the insulative tiers and the conductive tiers in the memory blocks. A through-array-via (TAV) region comprises TAV constructions that extend through the insulative tiers and the conductive tiers. The TAV constructions individually comprise a radially-outer insulative lining and a conductive core radially-inward of the insulative lining. The insulative lining comprises a radially-inner insulative material and a radially-outer insulative material that are of different compositions relative one another. The radially-outer insulative material is in radially-outer recesses that are in the first tiers as compared to the second tiers. The radially-inner insulative material extends elevationally along the insulative tiers and the conductive tiers. Other embodiments, including method, are disclosed.

公开(公告)号：US20230148107A1

公开(公告)日：2023-05-11

申请号：US18148662

申请日：2022-12-30

Applicant: Micron Technology, Inc.

Inventor： John D. Hopkins ,  Jordan D. Greenlee ,  Marko Milojevic

IPC: H01L23/532 ,  H10B41/27 ,  H10B41/35 ,  H01L23/522 ,  H01L27/146 ,  H10N70/00 ,  H01L21/762 ,  H04N21/422 ,  H04N21/21 ,  H10B41/30

CPC classification number: H01L23/53209 ,  H01L27/11556 ,  H01L27/11524 ,  H01L23/5226 ,  H01L27/14636 ,  H01L45/1233 ,  H01L21/76264 ,  H04N21/4222 ,  H04N21/21 ,  H01L27/11521 ,  H01H2231/002

Abstract: A microelectronic device comprises pillar structures extending vertically through an isolation material, conductive lines electrically coupled to the pillar structures, contact structures between the pillar structures and the conductive lines, and interconnect structures between the conductive lines and the contact structures. The conductive lines comprise one or more of titanium, ruthenium, aluminum, and molybdenum. The interconnect structures comprise a material composition that is different than one or more of a material composition of the contact structures and a material composition of the conductive lines. Related memory devices, electronic systems, and methods are also described.

公开(公告)号：US11569120B2

公开(公告)日：2023-01-31

申请号：US17228937

申请日：2021-04-13

Applicant: Micron Technology, Inc.

Inventor： Daniel Billingsley ,  Jordan D. Greenlee ,  Yongjun Jeff Hu

IPC: H01L21/762 ,  H01L27/11519 ,  H01L27/11524 ,  H01L27/11565 ,  H01L27/1157 ,  H01L21/311 ,  H01L27/11556 ,  H01L27/11582 ,  H01L21/3115

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. Horizontally-elongated trenches are formed into the stack to form laterally-spaced memory-block regions. Bridge material is formed across the trenches laterally-between and longitudinally-along immediately-laterally-adjacent of the memory-block regions. The bridge material comprises longitudinally-alternating first and second regions. The first regions of the bridge material are ion implanted differently than the second regions of the bridge material to change relative etch rate of one of the first or second regions relative to the other in an etching process. The first and second regions are subjected to the etching process to selectively etch away one of the first and second regions relative to the other to form bridges that extend across the trenches laterally-between and longitudinally-spaced-along the immediately-laterally-adjacent memory-block regions. Other embodiments and structure independent of method are disclosed.

公开(公告)号：US20230021060A1

公开(公告)日：2023-01-19

申请号：US17377949

申请日：2021-07-16

Applicant: Micron Technology, Inc.

Inventor： John D. Hopkins ,  Jordan D. Greenlee ,  Alyssa N. Scarbrough

IPC: G11C16/04 ,  H01L27/11582 ,  H01L27/11565 ,  H01L27/1157 ,  H01L27/11556 ,  H01L27/11519 ,  H01L27/11524

Abstract: A method used in forming a memory array comprising strings of memory cells comprises forming a conductor tier comprising conductor material on a substrate. Laterally-spaced memory-block regions individually comprise a vertical stack comprising alternating first tiers and second tiers are formed directly above the conductor tier. Channel-material strings of memory cells extend through the first tiers and the second tiers. A lower of the first tiers comprises sacrificial material. A horizontally-elongated slot is formed through the first and second tiers to the sacrificial material in individual of the memory-block regions to form laterally-spaced sub-block regions in the individual memory-block regions. The sacrificial material is isotropically etched from the lower first tier through the horizontally-elongated slots. After the isotropic etching, conducting material is formed in the horizontally-elongated slots and in the lower first tier that directly electrically couples together the channel material of individual of the channel-material strings and the conductor material of the conductor tier. After forming the conducting material, horizontally-elongated trenches are formed through the first tiers and the second tiers and that are individually laterally between immediately-adjacent of the memory-block regions. Other embodiments, including structure independent of method, are disclosed.

公开(公告)号：US11476274B2

公开(公告)日：2022-10-18

申请号：US16928345

申请日：2020-07-14

Applicant: Micron Technology, Inc.

Inventor： Daniel Billingsley ,  Jordan D. Greenlee ,  John D. Hopkins ,  Yongjun Jeff Hu

IPC: H01L27/11582 ,  H01L27/11519 ,  H01L27/1157 ,  H01L27/11556 ,  H01L27/11565 ,  H01L27/11524

Abstract: A memory array comprising strings of memory cells comprises an upper stack above a lower stack. The lower stack comprises vertically-alternating lower conductive tiers and lower insulative tiers. The upper stack comprises vertically-alternating upper conductive tiers and upper insulative tiers. An intervening tier is vertically between the upper and lower stacks. The intervening tier is at least predominantly polysilicon and of different composition from compositions of the upper conductive tier and the upper insulative tier immediately-above the intervening tier and of different composition from compositions of the lower conductive tier and the lower insulative tier immediately-below the intervening tier. Channel-material strings of memory cells extend through the upper stack, the intervening tier, and the lower stack. Other structures and methods are disclosed.

公开(公告)号：US20220310525A1

公开(公告)日：2022-09-29

申请号：US17216264

申请日：2021-03-29

Applicant: Micron Technology, Inc.

Inventor： Jordan D. Greenlee ,  Rita J. Klein ,  Everett Allen McTeer ,  John Hopkins

IPC: H01L23/532 ,  H01L23/535 ,  H01L27/11556 ,  H01L27/11582 ,  H01L21/768

Abstract: Some embodiments include apparatuses and methods of forming the apparatuses. One of the apparatuses includes a first dielectric material; a second dielectric material separated from the first dielectric material; a memory cell string including a pillar extending through the first and second dielectric materials, the pillar including a portion between the first and second dielectric materials; and a tungsten material located between the first and second dielectric materials and separated from the portion of the pillar and the first and second dielectric materials by an additional dielectric material. The additional dielectric material has a dielectric constant greater than a dielectric constant of silicon dioxide. The additional dielectric material contacts the portion of the pillar and the tungsten material.

公开(公告)号：US11417682B2

公开(公告)日：2022-08-16

申请号：US17230541

申请日：2021-04-14

Applicant: Micron Technology, Inc.

Inventor： John D. Hopkins ,  Shyam Surthi ,  Jordan D. Greenlee

IPC: H01L27/11582 ,  H01L29/49 ,  H01L29/51 ,  H01L21/28 ,  H01L29/792 ,  H01L29/788 ,  H01L21/02 ,  H01L27/11556

Abstract: Some embodiments include a NAND memory array having a vertical stack of alternating insulative levels and conductive levels. The conductive levels include terminal regions, and include nonterminal regions proximate the terminal regions. The terminal regions are vertically thicker than the nonterminal regions, and are configured as segments which are vertically stacked one atop another and which are vertically spaced from one another. Blocks are adjacent to the segments and have approximately a same vertical thickness as the segments. The blocks include high-k dielectric material, charge-blocking material and charge-storage material. Channel material extends vertically along the stack and is adjacent to the blocks. Some embodiments include integrated assemblies. Some embodiments include methods of forming integrated assemblies.

公开(公告)号：US20220246634A1

公开(公告)日：2022-08-04

申请号：US17162524

申请日：2021-01-29

Applicant: Micron Technology, Inc.

Inventor： Alyssa N. Scarbrough ,  Jordan D. Greenlee ,  John D. Hopkins

IPC: H01L27/11582 ,  H01L27/11524 ,  H01L27/11556 ,  H01L27/11529 ,  H01L27/1157 ,  H01L27/11573

Abstract: Some embodiments include an integrated assembly having a memory region and another region adjacent the memory region. Channel-material-pillars are arranged within the memory region, and conductive posts are arranged within said other region. A source structure is coupled to lower regions of the channel-material-pillars. A panel extends across the memory region and the other region. Doped-semiconductor-material is directly adjacent to the panel within the memory region and the other region. The doped-semiconductor-material is at least part of the source structure within the memory region. Liners are directly adjacent to the conductive posts and laterally surround the conductive posts. The liners are between the conductive posts and the doped-semiconductor-material. Some embodiments include methods of forming integrated assemblies.

公开(公告)号：US20220149067A1

公开(公告)日：2022-05-12

申请号：US17091668

申请日：2020-11-06

Applicant: Micron Technology, Inc.

Inventor： John D. Hopkins ,  Jordan D. Greenlee ,  Nancy M. Lomeli ,  Alyssa N. Scarbrough

IPC: H01L27/11582 ,  H01L27/11556 ,  H01L27/11565 ,  H01L27/1157 ,  H01L27/11524 ,  H01L27/11519

Abstract: A memory array comprises laterally-spaced memory blocks individually comprising a vertical stack comprising alternating insulative tiers and conductive tiers. Channel-material strings of memory cells extend through the insulative tiers and the conductive tiers. Dummy pillars extend through the insulative tiers and the conductive tiers. A lowest of the conductive tiers comprises conducting material and dummy-region material that is aside and of different composition from that of the conducting material. The channel-material strings extend through the conducting material of the lowest conductive tier. The dummy pillars extend through the dummy-region material of the lowest conductive tier. Other embodiments, including method, are disclosed.