公开(公告)号：US20220109000A1

公开(公告)日：2022-04-07

申请号：US17062222

申请日：2020-10-02

Applicant: Micron Technology, Inc.

Inventor： Haitao Liu ,  Kunal R. Parekh

IPC: H01L27/11582 ,  H01L29/47 ,  H01L21/285 ,  H01L27/11556 ,  H01L27/11529 ,  H01L27/11573

Abstract: A microelectronic device comprises a stack structure, cell pillar structures, an active body structure, digit line structures, and control logic devices. The stack structure comprises vertically neighboring tiers, each of the vertically neighboring tiers comprising a conductive structure and an insulative structure vertically neighboring the conductive structure. The cell pillar structures vertically extend through the stack structure and each comprise a channel material and an outer material stack horizontally interposed between the channel material and the stack structure. The active body structure vertically overlies the stack structure and is in contact with the channel material of the cell pillar structures. The active body structure comprises a metal material having a work function greater than or equal to about 4.7 electronvolts. The digit line structures vertically underlie the stack structure and are coupled to the cell pillar structures. Memory devices, electronic systems, and methods of forming a microelectronic device are also described.

公开(公告)号：US11239252B2

公开(公告)日：2022-02-01

申请号：US16907967

申请日：2020-06-22

Applicant: Micron Technology, Inc.

Inventor： Justin B. Dorhout ,  Fei Wang ,  Chet E. Carter ,  Ian Laboriante ,  John D. Hopkins ,  Kunal Shrotri ,  Ryan Meyer ,  Vinayak Shamanna ,  Kunal R. Parekh ,  Martin C. Roberts ,  Matthew Park

IPC: H01L29/792 ,  H01L27/11582 ,  H01L27/1157 ,  H01L23/528 ,  H01L23/532

Abstract: Some embodiments include an integrated structure having vertically-stacked conductive levels alternating with dielectric levels. A layer over the conductive levels includes silicon, nitrogen, and one or more of carbon, oxygen, boron and phosphorus. In some embodiments the vertically-stacked conductive levels are wordline levels within a NAND memory array. Some embodiments include an integrated structure having vertically-stacked conductive levels alternating with dielectric levels. Vertically-stacked NAND memory cells are along the conductive levels within a memory array region. A staircase region is proximate the memory array region. The staircase region has electrical contacts in one-to-one correspondence with the conductive levels. A layer is over the memory array region and over the staircase region. The layer includes silicon, nitrogen, and one or more of carbon, oxygen, boron and phosphorus.

公开(公告)号：US20220020736A1

公开(公告)日：2022-01-20

申请号：US16932098

申请日：2020-07-17

Applicant: Micron Technology, Inc.

Inventor： Aaron S. Yip ,  Kunal R. Parekh ,  Akira Goda

IPC: H01L25/18 ,  H01L25/065 ,  H01L23/00 ,  H01L25/00

Abstract: A microelectronic device comprises a first die comprising a memory array region comprising a stack structure comprising vertically alternating conductive structures and insulative structures, and vertically extending strings of memory cells within the stack structure. The first die further comprises first control logic region comprising a first control logic devices including at least a word line driver. The microelectronic device further comprise a second die attached to the first die, the second die comprising a second control logic region comprising second control logic devices including at least one page buffer device configured to effectuate a portion of control operations of the vertically extending string of memory cells. Related microelectronic devices, electronic systems, and methods are also described.

公开(公告)号：US20210398967A1

公开(公告)日：2021-12-23

申请号：US16905734

申请日：2020-06-18

Applicant: Micron Technology, Inc.

Inventor： Kunal R. Parekh

IPC: H01L25/00 ,  H01L27/11582 ,  H01L27/11556

Abstract: A method of forming a microelectronic device comprises forming a source material around substantially an entire periphery of a base material, and removing the source material from lateral sides of the base material while maintaining the source material over an upper surface and a lower surface of the base material. Related methods and base structures for microelectronic devices are also described.

公开(公告)号：US20210217730A1

公开(公告)日：2021-07-15

申请号：US16742485

申请日：2020-01-14

Applicant: Micron Technology, Inc.

Inventor： Kunal R. Parekh ,  Paolo Tessariol ,  Akira Goda

IPC: H01L25/065 ,  H01L23/48 ,  H01L23/482 ,  H01L25/00 ,  H01L21/768 ,  H01L23/00

Abstract: A microelectronic device comprises a memory array region, a control logic region, and an additional control logic region. The memory array region comprises a stack structure comprising vertically alternating conductive structures and insulating structures, and vertically extending strings of memory cells within the stack structure. The control logic region underlies the stack structure and comprises control logic devices configured to effectuate a portion of control operations for the vertically extending strings of memory cells. The additional control logic region overlies the stack structure and comprises additional control logic devices configured to effectuate an additional portion of the control operations for the vertically extending strings of memory cells. Methods of forming a microelectronic device, and additional microelectronic devices and electronic systems are also described.

公开(公告)号：US20210057264A1

公开(公告)日：2021-02-25

申请号：US16983559

申请日：2020-08-03

Applicant: Micron Technology, Inc.

Inventor： Kyle K. Kirby ,  Kunal R. Parekh

IPC: H01L21/74 ,  H01L21/768 ,  H01L21/8234 ,  H01L23/48 ,  H01L27/108 ,  H01L23/498 ,  H01L29/78 ,  H01L21/265 ,  H01L29/66

Abstract: Semiconductor devices are described that have a metal interconnect extending vertically through a portion of the device to the back side of a semiconductor substrate. A top region of the metal interconnect is located vertically below a horizontal plane containing a metal routing layer. Method of fabricating the semiconductor device can include etching a via into a semiconductor substrate, filling the via with a metal material, forming a metal routing layer subsequent to filling the via, and removing a portion of a bottom of the semiconductor substrate to expose a bottom region of the metal filled via.

公开(公告)号：US10756111B2

公开(公告)日：2020-08-25

申请号：US16439278

申请日：2019-06-12

Applicant: Micron Technology, Inc.

Inventor： Kunal R. Parekh

IPC: H01L27/11582 ,  H01L27/11556 ,  H01L29/06 ,  H01L21/02 ,  H01L21/768 ,  H01L21/762

Abstract: Some embodiments include an integrated assembly having a conductive structure which includes a semiconductor material over a metal-containing material. A stack of alternating conductive levels and insulative levels is over the conductive structure. A partition extends through the stack. The partition has wall regions, and has corner regions where two or more wall regions meet. The conductive structure includes a first portion which extends directly under the corner regions, and includes a second portion which is directly under the wall regions and is not directly under the corner regions. The first portion has a first thickness of the semiconductor material and the second portion has a second thickness of the semiconductor material. The first thickness is greater than the second thickness. Some embodiments include methods of forming integrated assemblies.

公开(公告)号：US10720446B2

公开(公告)日：2020-07-21

申请号：US16158039

申请日：2018-10-11

Applicant: Micron Technology, Inc.

Inventor： Justin B. Dorhout ,  Fei Wang ,  Chet E. Carter ,  Ian Laboriante ,  John D. Hopkins ,  Kunal Shrotri ,  Ryan Meyer ,  Vinayak Shamanna ,  Kunal R. Parekh ,  Martin C. Roberts ,  Matthew Park

IPC: H01L27/11582 ,  H01L27/1157 ,  H01L23/528 ,  H01L23/532

Abstract: Some embodiments include an integrated structure having vertically-stacked conductive levels alternating with dielectric levels. A layer over the conductive levels includes silicon, nitrogen, and one or more of carbon, oxygen, boron and phosphorus. In some embodiments the vertically-stacked conductive levels are wordline levels within a NAND memory array. Some embodiments include an integrated structure having vertically-stacked conductive levels alternating with dielectric levels. Vertically-stacked NAND memory cells are along the conductive levels within a memory array region. A staircase region is proximate the memory array region. The staircase region has electrical contacts in one-to-one correspondence with the conductive levels. A layer is over the memory array region and over the staircase region. The layer includes silicon, nitrogen, and one or more of carbon, oxygen, boron and phosphorus.

公开(公告)号：US20190229127A1

公开(公告)日：2019-07-25

申请号：US16372563

申请日：2019-04-02

Applicant: Micron Technology, Inc.

Inventor： Justin B. Dorhout ,  Kunal R. Parekh ,  Matthew Park ,  Joseph Neil Greeley ,  Chet E. Carter ,  Martin C. Roberts ,  Indra V. Chary ,  Vinayak Shamanna ,  Ryan Meyer ,  Paolo Tessariol

IPC: H01L27/11556 ,  H01L27/11573 ,  H01L27/11519 ,  H01L27/11565 ,  H01L27/11582

CPC classification number: H01L27/11556 ,  H01L27/11519 ,  H01L27/11565 ,  H01L27/11573 ,  H01L27/11582

Abstract: An array of elevationally-extending strings of memory cells, where the memory cells individually comprise a programmable charge storage transistor, comprises a substrate comprising a first region containing memory cells and a second region not containing memory cells laterally of the first region. The first region comprises vertically-alternating tiers of insulative material and control gate material. The second region comprises vertically-alternating tiers of different composition insulating materials laterally of the first region. A channel pillar comprising semiconductive channel material extends elevationally through multiple of the vertically-alternating tiers within the first region. Tunnel insulator, programmable charge storage material, and control gate blocking insulator are between the channel pillar and the control gate material of individual of the tiers of the control gate material within the first region. Conductive vias extend elevationally through the vertically-alternating tiers in the second region. An elevationally-extending wall is laterally between the first and second regions. The wall comprises the programmable charge storage material and the semiconductive channel material. Other embodiments and aspects, including method, are disclosed.

公开(公告)号：US10256249B2

公开(公告)日：2019-04-09

申请号：US15651719

申请日：2017-07-17

Applicant: Micron Technology, Inc.

Inventor： Justin B. Dorhout ,  David Daycock ,  Kunal R. Parekh ,  Martin C. Roberts ,  Yushi Hu

IPC: H01L27/115 ,  H01L27/11582 ,  H01L29/66 ,  H01L29/78 ,  H01L29/76

Abstract: Some embodiments include an integrated structure having a conductive material, a select device gate material over the conductive material, and vertically-stacked conductive levels over the select device gate material. Vertically-extending monolithic channel material is adjacent the select device gate material and the conductive levels. The monolithic channel material contains a lower segment adjacent the select device gate material and an upper segment adjacent the conductive levels. A first vertically-extending region is between the lower segment of the monolithic channel material and the select device gate material. The first vertically-extending region contains a first material. A second vertically-extending region is between the upper segment of the monolithic channel material and the conductive levels. The second vertically-extending region contains a material which is different in composition from the first material.