Alignment mark for opaque layer
    1.
    发明授权
    Alignment mark for opaque layer 有权
    不透明层的对齐标记

    公开(公告)号:US08324742B2

    公开(公告)日:2012-12-04

    申请号:US12185003

    申请日:2008-08-01

    IPC分类号: H01L23/544 H01L21/76

    摘要: An IC alignment mark in a contact metal layer for use under an opaque layer, and a process for forming the alignment mark, are disclosed. The alignment mark includes contact metal fields, each several microns wide, with an array of PMD pillars in the interior, formed during contact etch, contact metal deposition and selective contact metal removal processes. The pillars are arrayed such that all exposed surfaces of the contact metal are planar. One configuration is a rectangular array in which every other row is laterally offset by one-half of the column spacing. Horizontal dimensions of the pillars are selected to maximize the contact metal fill factor, while providing sufficient adhesion to the underlying substrate during processing. The contact metal is at least 15 nanometers lower than the PMD layer surrounding the alignment mark, as a result of the contact metal removal process.

    摘要翻译: 公开了在不透明层下使用的接触金属层中的IC对准标记和用于形成对准标记的工艺。 对准标记包括几微米宽的接触金属场,在接触蚀刻期间形成的PMD柱阵列,接触金属沉积和选择性接触金属去除过程。 柱子被排列成使得接触金属的所有暴露表面是平面的。 一个配置是矩形阵列,其中每隔一行被横向偏移列间距的一半。 选择柱的水平尺寸以使接触金属填充因子最大化,同时在处理期间向下面的基底提供足够的粘附。 作为接触金属去除过程的结果,接触金属比围绕对准标记的PMD层低至少15纳米。

    ALIGNMENT MARK FOR OPAQUE LAYER
    2.
    发明申请
    ALIGNMENT MARK FOR OPAQUE LAYER 有权
    OPAQUE层的对齐标记

    公开(公告)号:US20090243122A1

    公开(公告)日:2009-10-01

    申请号:US12185003

    申请日:2008-08-01

    IPC分类号: H01L23/544 H01L21/76

    摘要: An IC alignment mark in a contact metal layer for use under an opaque layer, and a process for forming the alignment mark, are disclosed. The alignment mark includes contact metal fields, each several microns wide, with an array of PMD pillars in the interior, formed during contact etch, contact metal deposition and selective contact metal removal processes. The pillars are arrayed such that all exposed surfaces of the contact metal are planar. One configuration is a rectangular array in which every other row is laterally offset by one-half of the column spacing. Horizontal dimensions of the pillars are selected to maximize the contact metal fill factor, while providing sufficient adhesion to the underlying substrate during processing. The contact metal is at least 15 nanometers lower than the PMD layer surrounding the alignment mark, as a result of the contact metal removal process.

    摘要翻译: 公开了在不透明层下使用的接触金属层中的IC对准标记和用于形成对准标记的工艺。 对准标记包括几微米宽的接触金属场,在接触蚀刻期间形成的PMD柱阵列,接触金属沉积和选择性接触金属去除过程。 柱子被排列成使得接触金属的所有暴露表面是平面的。 一个配置是矩形阵列,其中每隔一行被横向偏移列间距的一半。 选择柱的水平尺寸以使接触金属填充因子最大化,同时在处理期间向下面的基底提供足够的粘附。 作为接触金属去除过程的结果,接触金属比围绕对准标记的PMD层低至少15纳米。

    Alignment mark for opaque layer
    3.
    发明授权

    公开(公告)号:US08268696B2

    公开(公告)日:2012-09-18

    申请号:US12964430

    申请日:2010-12-09

    IPC分类号: H01L21/762

    摘要: An IC alignment mark in a contact metal layer for use under an opaque layer, and a process for forming the alignment mark, are disclosed. The alignment mark includes contact metal fields, each several microns wide, with an array of PMD pillars in the interior, formed during contact etch, contact metal deposition and selective contact metal removal processes. The pillars are arrayed such that all exposed surfaces of the contact metal are planar. One configuration is a rectangular array in which every other row is laterally offset by one-half of the column spacing. Horizontal dimensions of the pillars are selected to maximize the contact metal fill factor, while providing sufficient adhesion to the underlying substrate during processing. The contact metal is at least 15 nanometers lower than the PMD layer surrounding the alignment mark, as a result of the contact metal removal process.

    ALIGNMENT MARK FOR OPAQUE LAYER
    4.
    发明申请
    ALIGNMENT MARK FOR OPAQUE LAYER 有权
    OPAQUE层的对齐标记

    公开(公告)号:US20110306176A1

    公开(公告)日:2011-12-15

    申请号:US12964430

    申请日:2010-12-09

    IPC分类号: H01L21/762

    摘要: An IC alignment mark in a contact metal layer for use under an opaque layer, and a process for forming the alignment mark, are disclosed. The alignment mark includes contact metal fields, each several microns wide, with an array of PMD pillars in the interior, formed during contact etch, contact metal deposition and selective contact metal removal processes. The pillars are arrayed such that all exposed surfaces of the contact metal are planar. One configuration is a rectangular array in which every other row is laterally offset by one-half of the column spacing. Horizontal dimensions of the pillars are selected to maximize the contact metal fill factor, while providing sufficient adhesion to the underlying substrate during processing. The contact metal is at least 15 nanometers lower than the PMD layer surrounding the alignment mark, as a result of the contact metal removal process.

    摘要翻译: 公开了在不透明层下使用的接触金属层中的IC对准标记和用于形成对准标记的工艺。 对准标记包括几微米宽的接触金属场,在接触蚀刻,接触金属沉积和选择性接触金属去除过程期间形成在内部的PMD柱阵列。 柱子被排列成使得接触金属的所有暴露表面是平面的。 一个配置是矩形阵列,其中每隔一行被横向偏移列间距的一半。 选择柱的水平尺寸以使接触金属填充因子最大化,同时在处理期间向下面的基底提供足够的粘附。 作为接触金属去除过程的结果,接触金属比围绕对准标记的PMD层低至少15纳米。

    Interleaved Bit Line Architecture for 2T2C Ferroelectric Memories
    7.
    发明申请
    Interleaved Bit Line Architecture for 2T2C Ferroelectric Memories 审中-公开
    2T2C铁电存储器的交错位线架构

    公开(公告)号:US20120307545A1

    公开(公告)日:2012-12-06

    申请号:US13150885

    申请日:2011-06-01

    IPC分类号: G11C11/22

    CPC分类号: G11C11/221

    摘要: A ferroelectric memory with interleaved pairs of ferroelectric memory cells of the two-transistor, two-capacitor (2T2C) type. Each memory cell in a given pair is constructed as first and second portions, each portion including a transistor and a ferroelectric capacitor. Within each pair, a first portion of a second memory cell is physically located between the first and second portions of the first memory cell. As a result, complementary bit lines for adjacent columns are interleaved with one another. Each sense amplifier is associated with a multiplexer, so that the adjacent columns of the interleaved memory cells are supported by a single sense amplifier. Noise coupling among the bit lines is reduced, and the sense amplifiers can be placed along one side of the array, reducing the number of dummy cells required to eliminate edge cell effects.

    摘要翻译: 具有双晶体管,双电容器(2T2C)型的交错成对的铁电存储器单元的铁电存储器。 给定对中的每个存储单元被构造为第一和第二部分,每个部分包括晶体管和铁电电容器。 在每对内,第二存储单元的第一部分物理地位于第一存储单元的第一和第二部分之间。 结果,用于相邻列的互补位线彼此交错。 每个读出放大器与复用器相关联,使得交错存储器单元的相邻列由单个读出放大器支持。 位线之间的噪声耦合减少,并且读出放大器可以沿着阵列的一侧放置,减少了消除边缘单元效应所需的虚拟单元的数量。

    Method for leakage reduction in fabrication of high-density FRAM arrays
    8.
    发明授权
    Method for leakage reduction in fabrication of high-density FRAM arrays 有权
    高密度FRAM阵列制造中泄漏减少的方法

    公开(公告)号:US08093070B2

    公开(公告)日:2012-01-10

    申请号:US11706722

    申请日:2007-02-15

    IPC分类号: H01L21/00

    摘要: A method is provided for fabricating a ferroelectric capacitor structure including a method for etching and cleaning patterned ferroelectric capacitor structures in a semiconductor device. The method comprises etching portions of an upper electrode, etching ferroelectric material, and etching a lower electrode to define a patterned ferroelectric capacitor structure, and etching a portion of a lower electrode diffusion barrier structure. The method further comprises ashing the patterned ferroelectric capacitor structure using a first ashing process, where the ash comprises an oxygen/nitrogen/water-containing ash, performing a wet clean process after the first ashing process, and ashing the patterned ferroelectric capacitor structure using a second ashing process.

    摘要翻译: 提供一种用于制造铁电电容器结构的方法,其包括在半导体器件中蚀刻和清洁图案化的铁电电容器结构的方法。 该方法包括蚀刻上电极的部分,蚀刻铁电材料,并蚀刻下电极以限定图案化的铁电电容器结构,以及蚀刻下电极扩散阻挡结构的一部分。 所述方法还包括使用第一灰化过程灰化所述图案化的铁电电容器结构,其中所述灰分包括含氧/氮/水的灰分,在所述第一灰化处理之后执行湿式清洁处理,以及使用 第二次灰化过程。