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    • 4. 发明授权
    • Method and system for realtime CD microloading control
    • 实时CD微控制方法与系统
    • US06924088B2
    • 2005-08-02
    • US10464479
    • 2003-06-18
    • David S. L. MuiWei LiuShashank C. DeshmukhHiroki Sasano
    • David S. L. MuiWei LiuShashank C. DeshmukhHiroki Sasano
    • G03F7/20H01L21/66G01B11/02
    • G03F7/70625H01L22/20Y10S977/854
    • A method and apparatus for processing a semiconductor wafer is provided for reducing CD microloading variation. OCD metrology is used to inspect a wafer to determine pre-etch CD microloading, by measuring the CD of dense and isolated photoresist lines. Other parameters can also be measured or otherwise determined, such as sidewall profile, photoresist layer thickness, underlying layer thickness, photoresist pattern density, open area, etc. The inspection results are fed forward to the etcher to determine process parameters, such as resist trim time and/or etch conditions, thereby achieving the desired post-etch CD microloading. In certain embodiments, the CD and profile measurements, trim, etch processing and post-etch cleaning are performed at a single module in a controlled environment. All of the transfer and processing steps performed by the module are performed in a clean environment, thereby increasing yield by avoiding exposing the wafer to the atmosphere and possible contamination between steps.
    • 提供了一种用于处理半导体晶片的方法和设备,用于减少CD微型负载变化。 OCD测量用于通过测量致密和隔离的光致抗蚀剂线的CD来检查晶片以确定预蚀刻CD微载入。 也可以测量或确定其它参数,例如侧壁轮廓,光致抗蚀剂层厚度,下层厚度,光致抗蚀剂图案密度,开放面积等。检查结果向前馈送到蚀刻器以确定工艺参数,例如抗蚀剂修整 时间和/或蚀刻条件,从而实现所需的后蚀刻CD微加载。 在某些实施例中,CD和轮廓测量,修剪,蚀刻处理和蚀刻后清洁在受控环境中的单个模块执行。 模块执行的所有转移和处理步骤都在干净的环境中进行,从而通过避免将晶片暴露在大气中并在步骤之间可能的污染来提高产量。
    • 5. 发明授权
    • Methodology for repeatable post etch CD in a production tool
    • 在生产工具中可重复的后蚀刻CD的方法
    • US06858361B2
    • 2005-02-22
    • US10238453
    • 2002-09-09
    • David S. L. MuiHiroki SasanoWei Liu
    • David S. L. MuiHiroki SasanoWei Liu
    • G03F7/20H01L21/66G01B11/14
    • G03F7/70625H01L22/20
    • A method and apparatus for processing a semiconductor wafer is provided for reducing dimensional variation by feeding forward information relating to photoresist mask CD and profile to adjust the next process the inspected wafer will undergo (e.g., a photoresist trim process). After the processing step, dimensions of a structure formed by the process, such as the CD of a gate formed by the process, are measured, and this information is fed back to the process tool to adjust the process for the next wafer to further reduce dimensional variation. By taking into account photoresist CD and profile variation when choosing a resist trim recipe, post-etch CD is decoupled from pre-etch CD and profile. With automatic compensation for pre-etch CD, a very tight distribution of post-etch CD is achieved. In certain embodiments, the CD and profile measurements, trim, etch processing and post-etch cleaning are performed at a single module in a controlled environment. All of the transfer and processing steps performed by the module are performed in a clean environment, thereby increasing yield by avoiding exposing the wafer to the atmosphere and possible contamination between steps.
    • 提供了一种用于处理半导体晶片的方法和装置,用于通过馈送与光致抗蚀剂掩模CD和轮廓相关的信息来减小尺寸变化,以调整被检查的晶片将经历的下一个处理(例如光致抗蚀剂修整处理)。 在处理步骤之后,测量由该工艺形成的结构的尺寸,例如通过该工艺形成的浇口的CD,并且将该信息反馈到处理工具以调整下一个晶片的工艺以进一步减少 尺寸变化。 通过在选择抗蚀剂修整配方时考虑光致抗蚀剂CD和轮廓变化,后蚀刻CD与预蚀刻CD和轮廓分离。 通过对预蚀刻光盘进行自动补偿,可以实现非常紧密的后蚀刻光盘分配。 在某些实施例中,CD和轮廓测量,修剪,蚀刻处理和蚀刻后清洁在受控环境中的单个模块执行。 模块执行的所有转移和处理步骤都在干净的环境中进行,从而通过避免将晶片暴露在大气中并在步骤之间可能的污染来提高产量。
    • 7. 发明授权
    • Materials and systems for advanced substrate cleaning
    • 用于高级基材清洗的材料和系统
    • US08314055B2
    • 2012-11-20
    • US12503486
    • 2009-07-15
    • David S. L. MuiJi ZhuArjun Mendiratta
    • David S. L. MuiJi ZhuArjun Mendiratta
    • C11D7/32
    • B08B7/0014C11D3/3746C11D7/5004C11D11/0047H01L21/02063H01L21/02071H01L21/6704H01L21/67051
    • The embodiments of the present invention provide improved materials, apparatus, and methods for cleaning wafer surfaces, especially surfaces of patterned wafers (or substrates). The cleaning materials, apparatus, and methods discussed have advantages in cleaning patterned substrates with fine features without substantially damaging the features. The cleaning material includes polymers of one or more polymeric compounds. The cleaning materials can be used in a wide range of viscosity and pH to clean different types of surfaces. The cleaning materials are in liquid phase, and deform around device features to capture the contaminants on the substrate. The polymers entrap the contaminants preventing their return to the substrate surface. The cleaning apparatus is designed to dispense and rinse cleaning materials with a range of viscosities.
    • 本发明的实施例提供用于清洁晶片表面,特别是图案化晶片(或基板)的表面的改进的材料,装置和方法。 所讨论的清洁材料,设备和方法具有在清洁具有精细特征的图案化基底而没有实质上损害特征的优点。 清洁材料包括一种或多种聚合物的聚合物。 清洁材料可以在宽范围的粘度和pH范围内使用以清洁不同类型的表面。 清洁材料处于液相,并围绕设备特征变形以捕获衬底上的污染物。 聚合物捕获污染物,防止其返回到基底表面。 清洁设备设计成可以分配和冲洗具有一定粘度范围的清洁材料。