面向液晶显示面板配线电阻计算的边界元/解析混合算法

杨思宇; 喻文健

面向液晶显示面板配线电阻计算的边界元/解析混合算法

A Hybrid Boundary Element and Analytical Method for Calculating the Wiring Resistance in Liquid Crystal Display Panel

摘要

摘要: 针对有限差分法和边界元法对常见液晶显示(LCD)面板配线结构进行电阻计算时存在计算精度差、时间长的问题,提出了LCD配线结构的二维边界元/解析混合电阻求解算法.通过对大规模不规则配线结构进行分析,并与规则形状进行对比,将其分割成为“长边”和“拐角”.“长边”部分使用解析方法计算;“拐角”部分使用边界元方法计算,并使用将凹多边形切割成为多个凸多边形的切割算法提高计算精度.实验结果表明,该算法适用于实际的复杂LCD配线结构,在保证结果准确度的同时,计算速度比边界元法、有限差分法快1万倍以上,已被应用于LCD面板的设计验证中.

Abstract: Aiming at the deficiency in accuracy and efficiency of the finite difference method (FDM) and boundary element method (BEM) when calculating the wiring resistance in a liquid crystal display (LCD) panel, a hybrid boundary element and analytical method for the resistance calculation of twodimensional LCD wiring is proposed.The method decomposes the LCD wiring into segments of“long edge”and“corner”shapes.The analytical method is used to calculate the resistance of“long edge”, while BEM is employed to calculate the resistance of“corner”.A concave polygon partition method is also proposed to improve the accuracy of BEM.The experimental results show that, the hybrid method is able to calculate the resistance of LCD wirings in actual designs accurately, with the computational speed over 10000X faster than FDM and BEM.The proposed method has been applied to the design and verification of LCD panel.

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