主动笔.pdfVIP

中国科技论文在线 电容式主动笔技术结构与原理 孙心海，陈东坡* （上海交通大学微电子学院，上海 200240 ） 5 摘要：随着智能手机，平板电脑的爆发式增长，越来越多的应用软件需要更高精度的触摸， 例如绘画软件等，由此手写笔的使用渐渐广泛，对于手写笔的性能要求也越来越高。主动式 电容式手写笔是在现有电容式触摸屏系统的硬件基础上实现的高精度，低成本，优异用户体 验的手写笔方案。不同于普通的被动式电容笔，主动式电容笔自身相当于信号发射源，触摸 10 屏的sensor 来接收电容笔发出的信号并且测算出X, Y, Z 坐标，这样可以实现类似于实际笔 尖粗细的效果。另外在电容笔中加入压力传感器，可以使笔能感测用户书写力度的变化，从 而可以更具书写力度的变化来改变笔迹的粗细，达到优异的用户效果体验。 关键词：电容触摸屏；ITO；互容式触摸；主动笔 中图分类号：TN7 15 Capacitive Active Pen Theory And Structure Sun Xinhai, Chen Dongpo (Shanghai Jiaotong University, School of Microelectronics, Shanghai 200240) Abstract: With smart phones, tablet PCs explosive growth, gradually widespread use of the 20 stylus , the stylus performance requirements are also increasing. For active capacitive stylus precision, sensitivity, writing fluency, anti-jamming capability in -depth study has important theoretical significance and engineering application value. Active Capacitive Stylus Pen is available in capacitive touch screen system hardware based on the high-precision, low cost, excellent user experience stylus program. Unlike ordinary passive 25 capacitive pen , capacitive pen itself is equivalent to the active signal emission source , touch screen capacitive stylus sensor to receive signals and measure the X, Y, Z coordinates, so you can achieve results similar to the actual thickness of the nib . Also in the capacitive pen to add pressure sensor that allows users to write pen can sense the intensity of the changes, which may be more changes in writing to change the intensity of the thickness of handwriting, to excellent effect