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为了研究投射式电容触摸屏电极图形对灵敏度的影响,实现从电极图形的设计上改进触摸屏的灵敏度,采用有限元分析理论,先对一些常见的电极图形进行仿真分析,并在此基础上新设计几种类型的触摸屏电极,通过对不同电极图形触摸屏的仿真,验证了电极图形与灵敏度关系。实验结果表明:“十字”、“米字”、“雪花”电极分别比菱形电极的灵敏度增加了1.122%、4.149%、5.779%,改进后效果最好的“新雪花”电极的灵敏度比菱形电极增加了12.481%,且高灵敏度区域面积大大增加。研究得出的电极图形和触摸屏灵敏度之间的相互关系对高灵敏度触摸屏的设计具有重要的应用价值。
In order to study the influence of the projected capacitive touch screen electrode pattern on the sensitivity and to improve the touch screen sensitivity from the design of the electrode pattern, the finite element analysis theory is used to simulate some common electrode patterns. Based on this, The types of touch screen electrodes, through the simulation of the touch screen of different electrode patterns, verify the relationship between the electrode patterns and the sensitivity. The experimental results show that the sensitivities of “Crosses ”, “Meizi ” and “Snowflake ” electrodes are 1.122%, 4.149% and 5.779% more than those of diamond electrodes, respectively. "The sensitivity of the electrode is increased by 12.481% than that of the diamond electrode, and the area of the high sensitivity is greatly increased. The relationship between the electrode pattern and the sensitivity of the touch screen obtained from the research is of great value to the design of the touch screen with high sensitivity.