A Pen-Pressure-Sensitive Capacitive Touch System Using Electrically Coupled Resonance Pen

📋 论文概要

该论文提出了一种采用电耦合谐振笔的压力敏感电容触摸系统，解决了传统电磁共振（EMR）笔需要额外专用硬件的问题，实现了低成本、高精度的笔压检测与触摸定位。

💡 主要创新点

• 提出电耦合谐振方式替代传统电磁共振，简化系统结构并降低功耗。
• 利用笔尖压力改变谐振频率，实现连续可变的压力感应。
• 将触摸检测与笔压感测集成在同一触控面板中，无需额外传感器层。

🏷 关键词

📄 原文摘要

become widely used in mobile devices such as smartphones, tablets, and so on. Beyond ordinary touch functions, some devices adopt an extra electromagnetic resonance (EMR) system [1] to support pens for advanced user experiences; these devices have been successfully commercialized for high-end devices [2]. Such devices offer a realistic and accurate pen-based drawing experience for consumers using a battreryless, light, and pressure-sensitive pen; this is possible because the EMR system excites a passive pen via magnetic coupling and senses the pen’s returning signal that contains coordinate and fine pen-pressure information. As shown in Fig. 6.8.1 (top), an EMR system, however, requires an additional costly sensor board made with a flexible printed circuit board beneath a display panel

👥 作者与机构

Changbyung Park1,2, Sungsoo Park2, Ki-duk Kim1, Sanghui Park1,

Juwan Park2, Yunhee Huh1, Byunghoon Kang2, Gyu-hyeong Cho1 KAIST, Daejeon, Korea, 2Samsung Electronics, Suwon, Korea 1 Capacitive touch systems for finger touch have