公开(公告)号：US10608005B2

公开(公告)日：2020-03-31

申请号：US14171656

申请日：2014-02-03

Applicant: MICRON TECHNOLOGY, INC.

Inventor： Ronald A. Weimer ,  Kyu S. Min ,  Thomas M. Graettinger ,  Durai Vishak Nirmal Ramaswamy

IPC: H01L27/115 ,  H01L27/11568

Abstract: Methods and devices are disclosed, such as those involving memory cell devices with improved charge retention characteristics. In one or more embodiments, a memory cell is provided having an active area defined by sidewalls of neighboring trenches. A layer of dielectric material is blanket deposited over the memory cell, and etched to form spacers on sidewalls of the active area. Dielectric material is formed over the active area, a charge trapping structure is formed over the dielectric material over the active area, and a control gate is formed over the charge trapping structure. In some embodiments, the charge trapping structure includes nanodots. In some embodiments, the width of the spacers is between about 130% and about 170% of the thickness of the dielectric material separating the charge trapping material and an upper surface of the active area.

公开(公告)号：US09397210B2

公开(公告)日：2016-07-19

申请号：US14043943

申请日：2013-10-02

Applicant: Micron Technology, Inc.

Inventor： James Mathew ,  Gordon Haller ,  Ronald A. Weimer ,  John Hopkins ,  Vinayak K. Shamanna ,  Sanjeev Sapra

IPC: H01L27/115 ,  H01L29/78 ,  H01L21/764

CPC classification number: H01L29/78 ,  H01L21/764 ,  H01L27/11524 ,  H01L27/1157

Abstract: A memory array has first and second memory cells over a semiconductor and an isolation region extending into the semiconductor. The isolation region includes an air gap between charge-storage structures of the first and second memory cells and a thickness of dielectric over the air gap and contained between the first and second memory cells.

Abstract translation: 存储器阵列具有半导体上的第一和第二存储器单元以及延伸到半导体中的隔离区。 隔离区包括第一和第二存储单元的电荷存储结构之间的气隙和气隙上的电介质的厚度，并且包含在第一和第二存储单元之间。

公开(公告)号：US11257838B2

公开(公告)日：2022-02-22

申请号：US16803867

申请日：2020-02-27

Applicant: Micron Technology, Inc.

Inventor： Ronald A. Weimer ,  Kyu S. Min ,  Thomas M. Graettinger ,  Durai Vishak Nirmal Ramaswamy

IPC: H01L27/11568 ,  H01L27/115

Abstract: Methods and devices are disclosed, such as those involving memory cell devices with improved charge retention characteristics. In one or more embodiments, a memory cell is provided having an active area defined by sidewalls of neighboring trenches. A layer of dielectric material is blanket deposited over the memory cell, and etched to form spacers on sidewalls of the active area. Dielectric material is formed over the active area, a charge trapping structure is formed over the dielectric material over the active area, and a control gate is formed over the charge trapping structure. In some embodiments, the charge trapping structure includes nanodots. In some embodiments, the width of the spacers is between about 130% and about 170% of the thickness of the dielectric material separating the charge trapping material and an upper surface of the active area.

公开(公告)号：US20140027832A1

公开(公告)日：2014-01-30

申请号：US14043943

申请日：2013-10-02

Applicant: Micron Technology, Inc.

Inventor： James Mathew ,  Gordon Haller ,  Ronald A. Weimer ,  John Hopkins ,  Vinayak K. Shamanna ,  Sanjeev Sapra

IPC: H01L29/78

CPC classification number: H01L29/78 ,  H01L21/764 ,  H01L27/11524 ,  H01L27/1157

Abstract: A memory array has first and second memory cells over a semiconductor and an isolation region extending into the semiconductor. The isolation region includes an air gap between charge-storage structures of the first and second memory cells and a thickness of dielectric over the air gap and contained between the first and second memory cells.

Abstract translation: 存储器阵列具有半导体上的第一和第二存储器单元以及延伸到半导体中的隔离区。 隔离区包括第一和第二存储单元的电荷存储结构之间的气隙和气隙上的电介质的厚度，并且包含在第一和第二存储单元之间。

公开(公告)号：US20130166057A1

公开(公告)日：2013-06-27

申请号：US13775878

申请日：2013-02-25

Applicant: Micron Technology, Inc.

Inventor： Lingyi A. Zheng ,  Trung T. Doan ,  Lyle D. Breiner ,  Er-Xuan Ping ,  Kevin L. Beaman ,  Ronald A. Weimer ,  Cem Basceri ,  David J. Kubista

IPC: G05B19/00

CPC classification number: H01L28/40 ,  H01L21/3141 ,  H01L27/10852 ,  H01L28/60 ,  H01L28/84

Abstract: The present disclosure provides small scale capacitors (e.g., DRAM capacitors) and methods of forming such capacitors. One exemplary implementation provides a method of fabricating a capacitor that includes sequentially forming a first electrode, a dielectric layer, and a second electrode. At least one of the electrodes may be formed by a) reacting two precursors to deposit a first conductive layer at a first deposition rate, and b) depositing a second conductive layer at a second, lower deposition rate by depositing a precursor layer of one precursor at least one monolayer thick and exposing that precursor layer to another precursor to form a nanolayer reaction product. The second conductive layer may be in contact with the dielectric layer and have a thickness of no greater than about 50 Å.

Abstract translation: 本公开提供小尺寸电容器（例如，DRAM电容器）以及形成这种电容器的方法。 一个示例性实施例提供了一种制造电容器的方法，该电容器包括顺序地形成第一电极，电介质层和第二电极。 可以通过以下方式形成至少一个电极：a）使两个前体反应以第一沉积速率沉积第一导电层，以及b）通过沉积一个前体的前体层以第二较低沉积速率沉积第二导电层 至少一层单层，并将该前体层暴露于另一种前体以形成纳米层反应产物。 第二导电层可以与介电层接触并具有不大于约的厚度。