Advanced process control approach for Cu interconnect wiring sheet resistance control
    3.
    发明授权
    Advanced process control approach for Cu interconnect wiring sheet resistance control 失效
    Cu互连布线电阻控制的先进工艺控制方法

    公开(公告)号:US07083495B2

    公开(公告)日:2006-08-01

    申请号:US10723236

    申请日:2003-11-26

    IPC分类号: B24B49/00 B24B1/00

    摘要: A wafer based APC method for controlling an oxide (Cu, or TaN) polish step is described and combines a feed forward model that compensates for incoming wafer variations with a feed backward model which compensates for CMP variations. The method is geared toward minimizing Rs 3σ variations. A Rs target value is inputted with metrology data from previous processes that affects the width and thickness of the copper layer. A copper thickness target and polish time for the first wafer is determined. Post CMP measurement data of the first wafer is used to modify the polish rate with a disturbance factor and an updated polish time is computed for subsequent wafers. The CMP recipe for each wafer is adjusted with metrology data and post CMP measurements. The APC method is successful in controlling copper Rs variations for the 90 nm technology node and is independent of copper pattern density.

    摘要翻译: 描述了用于控制氧化物(Cu或TaN)抛光步骤的基于晶圆的APC方法,并且组合了用于补偿进入晶片变化的前馈模型与补偿CMP变化的馈送反向模型。 该方法面向最小化Rs 3sigma变化。 输入Rs目标值,其中来自先前工艺的测量数据影响铜层的宽度和厚度。 确定第一晶片的铜厚度目标和抛光时间。 第一晶片的CMP后测量数据被用于利用干扰因子修改抛光速率,并且为随后的晶片计算更新的抛光时间。 每个晶片的CMP配方用测量数据和后CMP测量进行调整。 APC方法成功地控制了90nm技术节点的铜Rs变化,并且与铜图案密度无关。

    Advanced process control approach for Cu interconnect wiring sheet resistance control
    4.
    发明申请
    Advanced process control approach for Cu interconnect wiring sheet resistance control 失效
    Cu互连布线电阻控制的先进工艺控制方法

    公开(公告)号:US20050112997A1

    公开(公告)日:2005-05-26

    申请号:US10723236

    申请日:2003-11-26

    摘要: A wafer based APC method for controlling an oxide (Cu, or TaN) polish step is described and combines a feed forward model that compensates for incoming wafer variations with a feed backward model which compensates for CMP variations. The method is geared toward minimizing Rs 3σ variations. A Rs target value is inputted with metrology data from previous processes that affects the width and thickness of the copper layer. A copper thickness target and polish time for the first wafer is determined. Post CMP measurement data of the first wafer is used to modify the polish rate with a disturbance factor and an updated polish time is computed for subsequent wafers. The CMP recipe for each wafer is adjusted with metrology data and post CMP measurements. The APC method is successful in controlling copper Rs variations for the 90 nm technology node and is independent of copper pattern density.

    摘要翻译: 描述了用于控制氧化物(Cu或TaN)抛光步骤的基于晶圆的APC方法,并且组合了用于补偿进入晶片变化的前馈模型与补偿CMP变化的馈送反向模型。 该方法面向最小化Rs 3sigma变化。 输入Rs目标值,其中来自先前工艺的测量数据影响铜层的宽度和厚度。 确定第一晶片的铜厚度目标和抛光时间。 第一晶片的CMP后测量数据被用于利用干扰因子修改抛光速率,并且为随后的晶片计算更新的抛光时间。 每个晶片的CMP配方用测量数据和后CMP测量进行调整。 APC方法成功地控制了90nm技术节点的铜Rs变化,并且与铜图案密度无关。

    System and method for dampening high pressure impact on porous materials
    9.
    发明授权
    System and method for dampening high pressure impact on porous materials 失效
    用于抑制高压冲击多孔材料的系统和方法

    公开(公告)号:US06875285B2

    公开(公告)日:2005-04-05

    申请号:US10422339

    申请日:2003-04-24

    摘要: System and method for reducing damage to a semiconductor substrate when using cleaning fluids at elevated pressures to clean the semiconductor substrates. A preferred embodiment comprises applying the cleaning fluid at a first pressure for a first time period, wherein the first pressure is relatively low, and then increasing the pressure of the cleaning fluid to a pressure level that can effectively clean the semiconductor substrate and maintaining the pressure level for a second time period. The application of the cleaning fluid at the relatively low initial pressure acts as a temporary filler and creates a buffer of the cleaning fluid on the semiconductor substrate and helps to dampen the impact of the subsequent high pressure application of the cleaning fluid on the semiconductor substrate.

    摘要翻译: 当在高压下使用清洁流体以清洁半导体衬底时,减少对半导体衬底的损伤的系统和方法。 优选实施例包括在第一时间段内施加第一压力的清洁流体,其中第一压力相对较低,然后将清洁流体的压力提高到可以有效地清洁半导体衬底并保持压力的压力水平 水平第二次。 以相对较低的初始压力施加清洁流体作为临时填料并在半导体衬底上产生清洗液的缓冲液,并且有助于抑制随后的高压施加清洁流体对半导体衬底的冲击。