Treatment of dielectric material to enhance etch rate
    1.
    发明授权
    Treatment of dielectric material to enhance etch rate 有权
    处理电介质材料以提高蚀刻速率

    公开(公告)号:US06905971B1

    公开(公告)日:2005-06-14

    申请号:US10331938

    申请日:2002-12-30

    CPC分类号: H01L21/31116 H01L21/31122

    摘要: In one embodiment, the present invention relates to a method for pre-treating and etching a dielectric layer in a semiconductor device comprising the steps of: (A) pre-treating one or more exposed portions of a dielectric layer with a plasma in a plasma etching tool to increase removal rate of the one or more exposed portions upon etching; and (B) removing the one or more exposed portions of the dielectric layer in the same plasma etching tool of step (A) via plasma etching.

    摘要翻译: 在一个实施例中,本发明涉及一种用于在半导体器件中预处理和蚀刻电介质层的方法,包括以下步骤:(A)用等离子体中的等离子体预处理介电层的一个或多个暴露部分 蚀刻工具,以在蚀刻时增加一个或多个暴露部分的去除速率; 和(B)通过等离子体蚀刻在步骤(A)的相同等离子体蚀刻工具中去除介电层的一个或多个暴露部分。

    Gate array with multiple dielectric properties and method for forming same
    5.
    发明授权
    Gate array with multiple dielectric properties and method for forming same 失效
    具有多种介电特性的门阵列及其形成方法

    公开(公告)号:US06563183B1

    公开(公告)日:2003-05-13

    申请号:US10085949

    申请日:2002-02-28

    IPC分类号: H01L2976

    摘要: The invention provides an integrated circuit fabricated on a semiconductor substrate. The integrated circuit comprises a first field effect transistor and a second field effect transistor. The first field effect transistor comprises a first polysilicon gate positioned above a first channel region of the substrate and isolated from the first channel region by a first dielectric layer extending the entire length of the first polysilicon gate. The first dielectric layer comprises a first dielectric material with a first dielectric constant. The second field effect transistor comprises a second polysilicon gate positioned above a second channel region on the substrate and isolated from the second channel region by a second dielectric layer extending the entire length of the second polysilicon gate. The second dielectric layer comprises a second dielectric material with a second dielectric constant. The first dielectric constant and the second dielectric constant may be different and both may be greater than the dielectric constant of silicon dioxide.

    摘要翻译: 本发明提供一种在半导体衬底上制造的集成电路。 集成电路包括第一场效应晶体管和第二场效应晶体管。 第一场效应晶体管包括位于衬底的第一沟道区上方的第一多晶硅栅极,并通过延伸第一多晶硅栅极的整个长度的第一电介质层与第一沟道区隔离。 第一电介质层包括具有第一介电常数的第一电介质材料。 第二场效应晶体管包括位于衬底上的第二沟道区上方的第二多晶硅栅极,并且通过延伸第二多晶硅栅极的整个长度的第二电介质层与第二沟道区隔离。 第二电介质层包括具有第二介电常数的第二电介质材料。 第一介电常数和第二介电常数可以是不同的,并且它们都可以大于二氧化硅的介电常数。

    Silicon oxime spacer for preventing over-etching during local
interconnect formation
    6.
    发明授权
    Silicon oxime spacer for preventing over-etching during local interconnect formation 失效
    硅肟间隔物,用于在局部互连形成期间防止过蚀刻

    公开(公告)号:US5990524A

    公开(公告)日:1999-11-23

    申请号:US993868

    申请日:1997-12-18

    IPC分类号: H01L21/768 H01L29/78

    CPC分类号: H01L21/76897 H01L21/76895

    摘要: During damascene formation of local interconnects in a semiconductor wafer, a punch-through region can be formed into the substrate as a result of exposing the oxide spacers that are adjacent to a transistor gate to one or more etching plasmas that are used to etch one or more overlying dielectric layers. A punch-through region can damage the transistor circuit. Improved, multipurpose spacers are provided to reduce the chances of over-etching. The multipurpose spacers are made of silicon oxime. The etching plasmas that are used to etch one or more overlying dielectric layers tend to have a higher selectivity ratio to the multipurpose spacers than to the conventional oxide spacers. Additionally, the multipurpose spacers do not tend to degrade the hot carrier injection (HCI) properties as would a typical nitride spacer.

    摘要翻译: 在半导体晶片中局部互连的镶嵌形成期间,由于将与晶体管栅极相邻的氧化物间隔物暴露于用于蚀刻一个或多个蚀刻等离子体的一个或多个蚀刻等离子体,可以将穿透区域形成为衬底, 更重叠的电介质层。 穿通区域可能会损坏晶体管电路。 提供改进的多用途间隔件以减少过度蚀刻的机会。 多用途间隔件由硅肟制成。 用于蚀刻一个或多个上覆电介质层的蚀刻等离子体与常规氧化物间隔物相比往往具有比多用途间隔物更高的选择比。 此外,多用途间隔物不会像典型的氮化物间隔物一样降低热载流子注入(HCl)性质。