晶圆校准器吸盘动力学建模与残余振动优化
DOI:
CSTR:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

TH162 TP242. 2

基金项目:

晶圆校准器;动力学建模;残余振动优化


Dynamic modeling and residual vibration optimization of wafer alignment chuck
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    晶圆校准器是确保晶圆在加工过程实现精准定位的重要设备,其定位精度易受晶圆校准器吸盘高速旋转启停时加速度 突变产生的残余振动影响。 为解决这一问题,首先分析了晶圆校准器吸盘表面的接触特性,建立晶圆校准器吸盘动力学数学模 型,通过仿真求解运动过程中晶圆与晶圆校准器吸盘的接触状态和形变情况。 在此基础上,引入系统真空度与最大旋转速度、 最大旋转加速度,获得在不同加加速度作用下晶圆的振幅与模态,求解加速度约束方程,进而利用三阶 Bezier 曲线构造对称的 晶圆校准器速度曲线。 同时,针对晶圆校准器电机在加速阶段与减速阶段的特性差异,基于 Pareto 多目标遗传算法优化对称速 度曲线参数,构造非对称速度曲线,进一步抑制晶圆校准器吸盘的残余振动,提高晶圆校准器的定位精度和工作效率。 最后,通 过仿真实验验证了非对称速度曲线在工作效率上的改进;同时搭建了晶圆校准器实物装置,设计实物实验验证其相对于传统的 速度曲线在定位精度和工作效率上的提升。 实验结果表明:本文设计的非对称速度曲线充分考虑晶圆校准器吸盘动力学特性, 与传统的速度曲线相比,可以有效减小吸盘残余振动,将校准器的定位精度提高至 0. 008 mm,缩短工作时间 0. 14 s,验证本文 所提方法有效。

    Abstract:

    Wafer alignment is a critical process in ensuring precise positioning of wafers during manufacturing. However, its positioning accuracy is often compromised by residual vibrations caused by sudden changes in acceleration during the high-speed start and stop phases of the chuck. To address this challenge, this study first analyzes the contact characteristics of the chuck surface, develops a mathematical dynamic model for the wafer alignment chuck, and simulates the contact interactions and deformation between the wafer and chuck during motion. Based on this analysis, the relationship between the system’ s vacuum level, maximum rotational speed, and maximum rotational acceleration is explored to determine the wafer’ s amplitude and mode under various acceleration conditions. An acceleration constraint equation is derived, and a symmetric velocity curve for the wafer alignment is constructed using a third-order Bezier curve. Additionally, accounting for motor characteristic variations during acceleration and deceleration phases, the parameters of the symmetric velocity curve are optimized using a Pareto multi-objective genetic algorithm to create an asymmetric velocity curve. This approach helps to further suppress residual vibrations of the chuck, thereby enhancing positioning accuracy and operational efficiency. Simulation experiments confirm the improvement in operational efficiency with the proposed asymmetric velocity curve. A physical wafer alignment device is also built, and physical experiments demonstrate enhanced positioning accuracy and operational efficiency compared to traditional velocity curves. The experimental results show that the asymmetric velocity curve, which accounts for the dynamic characteristics of the chuck, effectively reduces residual vibrations, improving alignment accuracy to 0. 008 mm and reducing operation time by 0. . 14 s. These findings validate the effectiveness of the proposed method in improving wafer alignment performance.

    参考文献
    相似文献
    引证文献
引用本文

刘暾东,唐之晨,王若宇,陈锃琰,刘长胜.晶圆校准器吸盘动力学建模与残余振动优化[J].仪器仪表学报,2025,46(1):227-235

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2025-04-08
  • 出版日期:
文章二维码