Capacitive touch panel with low sensitivity to water drop employing mutual-coupling electrical field shaping technique

• Main Authors: Zhong, Longjie, Lai, Xinquan, Xu, Donglai, Liao, Xinqin, Yang, Chuanshi, Fang, Zhongyuan, Zheng, Yuanjin
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2021
• Subjects: Engineering::Electrical and electronic engineering; Water Interference; Mutual Capacitance
• Online Access: https://hdl.handle.net/10356/147166
• Institution: Nanyang Technological University

This paper proposes a novel method to reduce the water interference on the touch panel based on mutual-capacitance sensing in human finger detection. As the height of a finger (height >10 mm) is far larger than that of a water-drop (height <1 mm), if the density distribution of electrical fiel...