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    • 22. 发明授权
    • Dynamic feed forward temperature control to achieve CD etching uniformity
    • 动态前馈温度控制实现CD蚀刻均匀性
    • US06794302B1
    • 2004-09-21
    • US10393909
    • 2003-03-20
    • Li-Shiun ChenMing-Ching ChangHuan-Just LinLi-Te S. LinYung-Hog ChiuHun-Jan Tao
    • Li-Shiun ChenMing-Ching ChangHuan-Just LinLi-Te S. LinYung-Hog ChiuHun-Jan Tao
    • H01L21302
    • H01J37/32935H01L21/32135H01L21/32137
    • A method for compensating CD variations across a semiconductor process wafer surface in a plasma etching process including a semiconductor wafer having a process surface comprising patterned features; carrying out a first plasma etching process wherein the semiconductor wafer is heated to at least two selectively controllable temperature zones; determining a first dimensional variation of etched features with respect to reference dimensions over predetermined areas of the process surface including the two selectively controllable temperature zones; determining operating temperatures for the two selectively controllable temperature zones to achieve a targeted dimensional variation change in the first dimensional variation to achieve a desired second dimensional variation; plasma etching the process surface to the desired operating temperatures; and, determining an actual dimensional variation change for use in at least one subsequent plasma etching process.
    • 一种用于在包括具有包括图案特征的工艺表面的半导体晶片的等离子体蚀刻工艺中补偿半导体工艺晶片表面上的CD变化的方法; 执行第一等离子体蚀刻工艺,其中半导体晶片被加热到至少两个可选择性控制的温度区域; 确定相对于包括所述两个可选择性控制的温度区域的所述工艺表面的预定区域上的参考尺寸的蚀刻特征的第一尺寸变化; 确定所述两个可选择性控制的温度区域的操作温度,以实现所述第一尺寸变化中的目标尺寸变化变化以实现期望的第二维度变化; 将工艺表面等离子体蚀刻到所需的工作温度; 以及确定用于至少一个随后等离子体蚀刻工艺中的实际尺寸变化变化。
    • 27. 发明申请
    • ETCHING PROCESS TO AVOID POLYSILICON NOTCHING
    • 蚀刻过程避免多晶硅缺口
    • US20060154487A1
    • 2006-07-13
    • US11033912
    • 2005-01-11
    • Shiang-Bau WangLi-Te LinMing-Ching ChangRyan ChenYuan-Hung ChiuHun-Jan Tao
    • Shiang-Bau WangLi-Te LinMing-Ching ChangRyan ChenYuan-Hung ChiuHun-Jan Tao
    • H01L21/8234H01L21/302
    • H01L21/32137H01L21/31116H01L21/823828
    • A method for plasma assisted etching of a polysilicon containing gate electrode to reduce or avoid polysilicon notching at a base portion including providing a semiconducting substrate; forming a gate dielectric layer on the semiconducting substrate; forming a polysilicon layer on the gate dielectric; patterning a photoresist layer over the polysilicon layer for etching a gate electrode; carrying out a first plasma assisted etch process to etch through a major thickness portion of the polysilicon layer; carrying out a first inert gas plasma treatment; carrying out a second plasma assisted etch process to include exposing portions of the underlying gate dielectric layer; carrying out a second inert gas plasma treatment; and, carrying out a third plasma assisted etch process to fully expose the underlying gate dielectric layer adjacent either side of the gate electrodes.
    • 一种用于等离子体辅助蚀刻含多晶硅栅电极的方法,以减少或避免在包括提供半导体衬底的基极部分处的多晶硅刻蚀; 在所述半导体衬底上形成栅介电层; 在栅极电介质上形成多晶硅层; 在多晶硅层上形成光致抗蚀剂层以蚀刻栅电极; 执行第一等离子体辅助蚀刻工艺以蚀刻通过多晶硅层的主要厚度部分; 进行第一惰性气体等离子体处理; 执行第二等离子体辅助蚀刻工艺以包括暴露下面的栅介电层的部分; 进行第二次惰性气体等离子体处理; 并且执行第三等离子体辅助蚀刻工艺以完全暴露邻近栅电极的任一侧的底层栅介质层。