System and Method for Improving a Lithography Simulation Model
    4.
    发明申请
    System and Method for Improving a Lithography Simulation Model 审中-公开
    改进光刻模拟模型的系统和方法

    公开(公告)号:US20140123084A1

    公开(公告)日:2014-05-01

    申请号:US13666270

    申请日:2012-11-01

    CPC classification number: G03F7/70441 G03F1/36 G03F7/705 G03F7/70516

    Abstract: A method of performing initial optical proximity correction (OPC) with a calibrated lithography simulation model. The method includes providing a photomask having an integrated circuit (IC) pattern formed thereon, acquiring an aerial image of the IC pattern formed on the photomask using an optical microscope, and calibrating an optical component of the lithography simulation model based on the aerial image. The method also includes exposing and developing a photoresist layer on a semiconductor wafer using the photomask to form a post-development pattern on the photoresist layer, acquiring a post-development image of the post-development pattern on the photoresist layer, and calibrating the photoresist component of the lithography simulation model based on the post-development image. Further, the method includes performing initial optical proximity correction (OPC) on an IC design layout based on a simulation of the IC design layout by the lithography simulation model including the calibrated optical and photoresist components.

    Abstract translation: 用校准光刻仿真模型执行初始光学邻近校正(OPC)的方法。 该方法包括提供其上形成有集成电路(IC)图案的光掩模,使用光学显微镜获取形成在光掩模上的IC图案的空间图像,并且基于空中图像校准光刻模拟模型的光学部件。 该方法还包括使用光掩模在半导体晶片上曝光和显影光致抗蚀剂层,以在光致抗蚀剂层上形成后显影图案,获得光致抗蚀剂层上后显影图案的显影后图像,并校准光致抗蚀剂 基于后期图像的光刻仿真模型的组成部分。 此外,该方法包括基于通过包括校准的光学和光致抗蚀剂组件的光刻模拟模型对IC设计布局进行的模拟,在IC设计布局上执行初始光学邻近校正(OPC)。

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