当手指或笔触摸屏幕时，平常相互绝缘的两层导电层就在触摸

点位置有了一个接触，因其中一面导电层接通X轴方向的5V均匀电压场(图a)

，使得检测层的电压由零变为非零，控制器侦测到这个接通后，进行A/D转换

，并将得到的电压值与5V相比即可得触摸点的X轴坐标为（原点在靠近接地点

的那端）：Xi=Lx＊Vi / V（即分压原理）同理得出Y轴的坐标，这就是所有电

阻技术触摸屏共同的最基本原理。-finger or pen to touch the screen, usually two mutually insulated conductive layer on location in touch with a contact, because either side conductive layer connected to the X-axis 5 V voltage field uniformity (a map), measuring the voltage level from zero to nonzero, the controller connected to the detection of this now, A/D conversion, and the voltage V compared with the five it can touch points for the X axis coordinates (close to the original point of getting access locations) : Xi'an Lx = Vi*/V (ie pressure principle) come empathy Y axis coordinates, This is all technical resistance Touchscreen common basic principles.