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Fabrication based computer aided design system using virtual fabrication techniques

机译:使用虚拟制造技术的基于制造的计算机辅助设计系统

摘要

A fabrication process based fabrication, modeling and analysis tool that allows the user to accurately design, visualize, simulate, and analyze the design of a micro-electro mechanical (MEMS) or other semiconductor device through a computer aided simulation of its actual fabrication process. The preferred embodiment creates a creates a model of both a device having the desired parameters and attributes and the necessary fabrication steps in the fabrication process to yield that device. The tool is suitable for implementation on existing general purpose computers. The tool involves a method comprising the general steps of, building a Process Table comprised of fabrication process steps, checking each step in the Process Table against a parameter set contained in a database of actual fabrication process steps, visualizing the geometry of a device yielded by performing the process steps in the Process Table, performing an analysis on the device yielded by performing the process steps in the Process Table by applying loads and boundary conditions to the device yielded by performing the process steps in the Process Table, discretizing the device structure, performing one or more methods of electrical, chemical, or mechanical analyses on the discretized structure; and visualizing the results of the analysis in graphical or tabular format. The analysis and discretization methods further employ a method of meshing the structure of the device comprising the steps of, generating a global three- dimensional volume mesh from the model; extracting a global surface mesh from the volume mesh, locating the exposed face surface mesh on the global surface mesh, refining the exposed face surface mesh by removing all non-exposed faces, performing an analysis over the refined exposed face surface mesh, relating the results of the analysis on the refined exposed face surface mesh to the global surface mesh and the global volume mesh.
机译:一个基于制造过程的制造,建模和分析工具,允许用户通过计算机辅助仿真其实际制造过程来准确地设计,可视化,模拟和分析微机电(MEMS)或其他半导体器件的设计。优选实施例创建具有所需参数和属性的设备以及在制造过程中产生该设备所需的制造步骤的设备的模型。该工具适合在现有通用计算机上实施。该工具涉及一种方法,该方法包括以下一般步骤:建立包括制造过程步骤的过程表,对照实际制造过程步骤数据库中包含的参数集检查过程表中的每个步骤,可视化由以下步骤产生的器件的几何形状执行过程表中的过程步骤,对通过执行过程表中的过程步骤所产生的设备进行分析,方法是对通过执行过程表中的过程步骤所产生的设备施加负载和边界条件,离散化设备结构,在离散结构上执行一种或多种电气,化学或机械分析方法;并以图形或表格形式可视化分析结果。分析和离散化方法还采用了使设备的结构网格化的方法,该方法包括以下步骤:从模型生成全局三维体积网格;以及从模型生成全局三维体积网格。从体积网格中提取全局表面网格,将裸露的表面网格物体放置在全局表面网格上,通过删除所有未暴露的面来精炼裸露的表面网格物体,对精炼的裸露的表面网格物体进行分析,并关联结果精制的暴露面曲面网格到整体曲面网格和整体体积网格的分析。

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