Use of pedestals to fabricate contact openings
    1.
    发明授权
    Use of pedestals to fabricate contact openings 失效
    使用基座制作接触孔

    公开(公告)号:US07300745B2

    公开(公告)日:2007-11-27

    申请号:US10772520

    申请日:2004-02-04

    IPC分类号: H01L29/66 H01L21/336

    摘要: Nonvolatile memory wordlines (160) are formed as sidewall spacers on sidewalls of control gate structures (280). Each control gate structure may contain floating and control gates (120, 140), or some other elements. Pedestals (340) are formed adjacent to the control gate structures before the conductive layer (160) for the wordlines is deposited. The pedestals will facilitate formation of the contact openings (330.1) that will be etched in an overlying dielectric (310) to form contacts to the wordlines. The pedestals can be dummy structures. A pedestal can physically contact two wordlines.

    摘要翻译: 非易失性存储器字线(160)形成为控制栅极结构(280)的侧壁上的侧壁间隔物。 每个控制栅极结构可以包含浮动和控制栅极(120,140)或一些其它元件。 在用于字线的导电层(160)被沉积之前,基座(340)形成为与控制栅极结构相邻。 基座将有助于形成将在上覆电介质(310)中蚀刻的接触开口(330.1),以形成与字线的接触。 基座可以是虚拟结构。 基座可以物理接触两个字线。

    Use of multiple etching steps to reduce lateral etch undercut
    3.
    发明申请
    Use of multiple etching steps to reduce lateral etch undercut 有权
    使用多个蚀刻步骤来减少横向蚀刻底切

    公开(公告)号:US20050170646A1

    公开(公告)日:2005-08-04

    申请号:US10772932

    申请日:2004-02-04

    摘要: In integrated circuit fabrication, an etch is used that has a lateral component. For example, the etch may be isotropic. Before the isotropic etch of a layer (160), another etch of the same layer is performed. This other etch can be anisotropic. This etch attacks a portion (160X2) of the layer adjacent to the feature to be formed by the isotropic etch. That portion is entirely or partially removed by the anisotropic etch. Then the isotropic etch mask (420) is formed to extend beyond the feature over the location of the portion subjected to the anisotropic etch. If that portion was removed entirely, then the isotropic etch mask may completely seal off the feature to be formed on the side of that portion, so the lateral etching will not occur. If that portion was removed only partially, then the lateral undercut will be impeded because the passage to the feature under the isotropic etch mask will be narrowed.

    摘要翻译: 在集成电路制造中,使用具有侧向分量的蚀刻。 例如,蚀刻可以是各向同性的。 在层(160)的各向同性蚀刻之前,执行相同层的另一蚀刻。 这种其他蚀刻可以是各向异性的。 该蚀刻攻击通过各向同性蚀刻形成的与特征相邻的层的部分(160×2)。 该部分被各向异性蚀刻完全或部分地去除。 然后,各向同性蚀刻掩模(420)被形成为延伸超过经过各向异性蚀刻的部分的位置的特征。 如果完全去除该部分,则各向同性蚀刻掩模可以完全密封要在该部分侧面上形成的特征,因此不会发生横向蚀刻。 如果该部分仅部分被去除,则横向底切将被阻碍,因为在各向同性蚀刻掩模下的特征的通过将变窄。

    Use of multiple etching steps to reduce lateral etch undercut
    4.
    发明申请
    Use of multiple etching steps to reduce lateral etch undercut 审中-公开
    使用多个蚀刻步骤来减少横向蚀刻底切

    公开(公告)号:US20060211255A1

    公开(公告)日:2006-09-21

    申请号:US11432222

    申请日:2006-05-10

    IPC分类号: H01L21/302

    摘要: In integrated circuit fabrication, an etch is used that has a lateral component. For example, the etch may be isotropic. Before the isotropic etch of a layer (160), another etch of the same layer is performed. This other etch can be anisotropic. This etch attacks a portion (160X2) of the layer adjacent to the feature to be formed by the isotropic etch. That portion is entirely or partially removed by the anisotropic etch. Then the isotropic etch mask (420) is formed to extend beyond the feature over the location of the portion subjected to the anisotropic etch. If that portion was removed entirely, then the isotropic etch mask may completely seal off the feature to be formed on the side of that portion, so the lateral etching will not occur. If that portion was removed only partially, then the lateral undercut will be impeded because the passage to the feature under the isotropic etch mask will be narrowed.

    摘要翻译: 在集成电路制造中,使用具有侧向分量的蚀刻。 例如,蚀刻可以是各向同性的。 在层(160)的各向同性蚀刻之前,执行相同层的另一蚀刻。 这种其他蚀刻可以是各向异性的。 该蚀刻攻击通过各向同性蚀刻形成的与特征相邻的层的部分(160×2)。 该部分被各向异性蚀刻完全或部分地去除。 然后,各向同性蚀刻掩模(420)被形成为延伸超过经过各向异性蚀刻的部分的位置的特征。 如果完全去除该部分,则各向同性蚀刻掩模可以完全密封要在该部分侧面上形成的特征,因此不会发生横向蚀刻。 如果该部分仅部分被去除,则横向底切将被阻碍,因为在各向同性蚀刻掩模下的特征的通过将变窄。

    Use of pedestals to fabricate contact openings
    5.
    发明申请
    Use of pedestals to fabricate contact openings 失效
    使用基座制作接触孔

    公开(公告)号:US20050170578A1

    公开(公告)日:2005-08-04

    申请号:US10772520

    申请日:2004-02-04

    摘要: Nonvolatile memory wordlines (160) are formed as sidewall spacers on sidewalls of control gate structures (280). Each control gate structure may contain floating and control gates (120, 140), or some other elements. Pedestals (340) are formed adjacent to the control gate structures before the conductive layer (160) for the wordlines is deposited. The pedestals will facilitate formation of the contact openings (330.1) that will be etched in an overlying dielectric (310) to form contacts to the wordlines. The pedestals can be dummy structures. A pedestal can physically contact two wordlines.

    摘要翻译: 非易失性存储器字线(160)形成为控制栅极结构(280)的侧壁上的侧壁间隔物。 每个控制栅极结构可以包含浮动和控制栅极(120,140)或一些其它元件。 在用于字线的导电层(160)被沉积之前,基座(340)形成为与控制栅极结构相邻。 基座将有助于形成将在上覆电介质(310)中蚀刻的接触开口(330.1),以形成与字线的接触。 基座可以是虚拟结构。 基座可以物理接触两个字线。

    Sidewall protection in fabrication of integrated circuits
    6.
    发明授权
    Sidewall protection in fabrication of integrated circuits 有权
    集成电路制造中的侧壁保护

    公开(公告)号:US06566196B1

    公开(公告)日:2003-05-20

    申请号:US10146979

    申请日:2002-05-15

    IPC分类号: H01L21336

    摘要: In a nonvolatile memory, a floating gate (124) is covered with ONO (98), and a control gate polysilicon layer (124) is formed on the ONO. After the control gate is patterned, the control gate sidewalls are oxidized to form a protective layer (101) of silicon dioxide. This oxide protects the control gate polysilicon during a subsequent etch of the silicon nitride portion (98.2) of the ONO. Therefore, the silicon nitride can be removed with an isotropic etch. A potential damage to the substrate isolation dielectric (210) is therefore reduced. Other embodiments are also provided.

    摘要翻译: 在非易失性存储器中,浮动栅极(124)被ONO(98)覆盖,并且在ONO上形成控制栅多晶硅层(124)。 在控制栅极被图案化之后,控制栅极侧壁被氧化以形成二氧化硅的保护层(101)。 该氧化物在ONO的氮化硅部分(98.2)的随后蚀刻期间保护控制栅极多晶硅。 因此,可以用各向同性蚀刻去除氮化硅。 因此,减小了对衬底隔离电介质(210)的潜在损害。 还提供了其他实施例。

    Method of providing contact via to a surface
    7.
    发明授权
    Method of providing contact via to a surface 有权
    将接触通孔提供到表面的方法

    公开(公告)号:US07375027B2

    公开(公告)日:2008-05-20

    申请号:US10964317

    申请日:2004-10-12

    IPC分类号: H01L21/4763

    摘要: A contact via to a surface of a semiconductor material is provided, the contact via having a sidewall which is produced by anisotropically etching a dielectric layer which is placed on via openings. A protective layer is provided on the surface of the semiconductor material. To protect the substrate, an initial etch through an interlayer dielectric is performed to create an initial via which extends toward, but not into the substrate. At least a portion of the protective layer is retained on the substrate. In another step, the final contact via is created. During this step the protective layer is penetrated to open a via to the surface of the semiconductor material.

    摘要翻译: 提供了通过半导体材料的表面的接触通孔,该接触通孔具有通过各向异性蚀刻放置在通孔上的电介质层产生的侧壁。 在半导体材料的表面上设置有保护层。 为了保护衬底,进行通过层间电介质的初始蚀刻,以产生向衬底延伸但不延伸到衬底中的初始通孔。 保护层的至少一部分保留在基板上。 在另一步中,创建最终的联系人通道。 在该步骤期间,保护层被穿透以将通孔打开到半导体材料的表面。

    Method of providing contact via to a surface
    8.
    发明申请
    Method of providing contact via to a surface 有权
    将接触通孔提供到表面的方法

    公开(公告)号:US20060079080A1

    公开(公告)日:2006-04-13

    申请号:US10964317

    申请日:2004-10-12

    IPC分类号: H01L21/4763

    摘要: A contact via to a surface of a semiconductor material is provided, the contact via having a sidewall which is produced by anisotropically etching a dielectric layer which is placed on via openings. A protective layer is provided on the surface of the semiconductor material. To protect the substrate, an initial etch through an interlayer dielectric is performed to create an initial via which extends toward, but not into the substrate. At least a portion of the protective layer is retained on the substrate. In another step, the final contact via is created. During this step the protective layer is penetrated to open a via to the surface of the semiconductor material.

    摘要翻译: 提供了通过半导体材料的表面的接触通孔,该接触通孔具有通过各向异性蚀刻放置在通孔上的电介质层产生的侧壁。 在半导体材料的表面上设置保护层。 为了保护衬底,进行通过层间电介质的初始蚀刻,以产生向衬底延伸但不延伸到衬底中的初始通孔。 保护层的至少一部分保留在基板上。 在另一步中,创建最终的联系人通道。 在该步骤期间,保护层被穿透以将通孔打开到半导体材料的表面。

    Method of fabricating A1N anti-reflection coating on metal layer
    9.
    发明授权
    Method of fabricating A1N anti-reflection coating on metal layer 失效
    在金属层上制造AlN防反射涂层的方法

    公开(公告)号:US6017816A

    公开(公告)日:2000-01-25

    申请号:US805295

    申请日:1997-02-25

    摘要: A method of fabricating notching free metal interconnection lines by utilizing aluminum nitride (AlN) as an anti-reflection coating. First, field oxide regions are formed on a semiconductor silicon wafer. Then, electrical element structures such as transistor, capacitor and resistor are formed on the predetermined area. Next, a barrier layer, a metal layer and an anti-reflection layer are successively deposited overlaying the entire silicon wafer surface. Next, the photoresist pattern is formed by the conventional lithography technique. By using photoresist pattern as an etching protection mask, the barrier layer, metal layer and anti-reflection layer are also patterned to form metal interconnection lines. Thereafter, the photoresist is stripped by oxygen plasma and sulfuric acid.

    摘要翻译: 一种通过利用氮化铝(AlN)作为抗反射涂层来制造无缝金属互连线的方法。 首先,在半导体硅晶片上形成场氧化物区域。 然后,在预定区域上形成诸如晶体管,电容器和电阻器的电气元件结构。 接下来,在整个硅晶片表面上依次沉积阻挡层,金属层和抗反射层。 接下来,通过常规的光刻技术形成光致抗蚀剂图案。 通过使用光致抗蚀剂图案作为蚀刻保护掩模,阻挡层,金属层和抗反射层也被图案化以形成金属互连线。 此后,通过氧等离子体和硫酸剥离光致抗蚀剂。