Treatment of dielectric material to enhance etch rate
    12.
    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。

    Method of fabricating a planar structure charge trapping memory cell array with rectangular gates and reduced bit line resistance
    13.
    发明授权
    Method of fabricating a planar structure charge trapping memory cell array with rectangular gates and reduced bit line resistance 失效
    制造平面结构电荷捕获具有矩形栅极的存储单元阵列并降低位线电阻的方法

    公开(公告)号:US06855608B1

    公开(公告)日:2005-02-15

    申请号:US10463643

    申请日:2003-06-17

    摘要: A method of fabricating a planar architecture charge trapping dielectric memory cell array with rectangular gates comprises fabricating a multi-layer charge trapping dielectric on the surface of a substrate. The layer adjacent to the substrate may be an oxide. A polysilicon layer is deposited over the charge trapping dielectric. A word line mask is applied over the polysilicon layer to mask linear word lines in a first direction and to expose trench regions there between and the trenches are etched to expose the charge trapping dielectric in the trench regions. A bit line mask is applied over the polysilicon layer to mask gates in a second direction perpendicular to the first direction and to expose bit line regions there between and the bit lines are etched to expose the oxide in the bit line regions. The bit lines are implanted and insulating spacers are fabricated on exposed sidewalls. The oxide is removed to expose the substrate between insulating spacers in the bit line regions and a conductor is fabricated thereon to enhance conductivity of each bit line.

    摘要翻译: 制造具有矩形栅极的平面架构电荷俘获介质存储单元阵列的方法包括在衬底的表面上制造多层电荷俘获电介质。 与衬底相邻的层可以是氧化物。 在电荷捕获电介质上沉积多晶硅层。 在多晶硅层上施加字线掩模以在第一方向上屏蔽线性字线并且在其间露出沟槽区域,并且蚀刻沟槽以暴露沟槽区域中的电荷俘获电介质。 将位线掩模施加在多晶硅层上以在垂直于第一方向的第二方向上屏蔽栅极,并在其间暴露位线区域,并蚀刻位线以暴露位线区域中的氧化物。 植入位线,并在暴露的侧壁上制造绝缘间隔物。 去除氧化物以在位线区域中的绝缘间隔物之间​​露出衬底,并且在其上制造导体以增强每个位线的导电性。

    METHOD OF FORMING CORE AND PERIPHERY GATES INCLUDING TWO CRITICAL MASKING STEPS TO FORM A HARD MASK IN A CORE REGION THAT INCLUDES A CRITICAL DIMENSION LESS THAN ACHIEVABLE AT A RESOLUTION LIMIT OF LITHOGRAPHY
    17.
    发明授权
    METHOD OF FORMING CORE AND PERIPHERY GATES INCLUDING TWO CRITICAL MASKING STEPS TO FORM A HARD MASK IN A CORE REGION THAT INCLUDES A CRITICAL DIMENSION LESS THAN ACHIEVABLE AT A RESOLUTION LIMIT OF LITHOGRAPHY 有权
    形成核心和外围门的方法,包括两个关键掩蔽步骤,以形成一个核心区域的硬掩模,其中包括在一个分辨率限制下无法达到的关键尺寸

    公开(公告)号:US06780708B1

    公开(公告)日:2004-08-24

    申请号:US10382744

    申请日:2003-03-05

    IPC分类号: H01L218242

    摘要: A method for forming a semiconductor device that includes a line and space pattern with variable pitch and critical dimensions in a layer on a substrate. The substrate includes a first region (e.g., a core region) and a second region (e.g., a periphery region). A first sub-line and space pattern in the first region comprises a space of a dimension (A) less than achievable by lithographic processes alone. Further, a second sub-line and space pattern in the second region comprises at least one line including a second critical dimension (B) achievable by lithography. The method uses two critical masking steps to form a hard mask that includes in the core region a critical dimension (A) less than achievable at a resolution limit of lithography. Further, the method uses a single etch step to transfer the pattern of the hard mask to the layer.

    摘要翻译: 一种用于形成半导体器件的方法,其包括在衬底上的层中具有可变节距和临界尺寸的线和间隔图案。 衬底包括第一区域(例如芯区域)和第二区域(例如,周边区域)。 第一区域中的第一子线和空间图案包括尺寸(A)的空间小于单独通过光刻工艺可实现的尺寸。 此外,第二区域中的第二子线和空间图案包括至少一条线,其包括通过光刻可实现的第二临界尺寸(B)。 该方法使用两个关键的掩模步骤来形成硬掩模,其在芯部区域中包括小于在光刻的分辨率极限下可实现的临界尺寸(A)。 此外,该方法使用单个蚀刻步骤将硬掩模的图案转移到该层。