High Sensitive Capacitive Touch Panel with Chain or Mountain-Shaped ITO Electrodes
This paper used COMSOL Multiphysics software to simulate and design two kinds of new touch panels with chain and mountain-shaped ITO electrodes, respectively.These two touch panel electrodes were both designed using parallel and vertical capacitance configurations.Compared with traditional common rectangular and diamond-shaped electrodes, it was found in simulation results that parallel and vertical capacitive gains for chain and mountain-shaped electrodes were 30% and 6%, respectively, higher than those for traditional rectangular and diamond-shaped ones.In addition, when the ratio of glass thickness (H) to indium tin oxide (ITO) electrode thickness (h) was larger, the corresponding capacitive gain was smaller.Introduction Touch panels are generally divided into resistive and capacitive types.The basic technology principle of capacitive touch panel consists in measuring extra capacitance generated from the panel touched by human fingers.Whether a finger has touched the panel can be determined by detecting capacitance variations with a detection circuit.Fig.1 shows a commonly used relaxation oscillator circuit where resistance R and capacitance C determine capacitor charging time.With this charging time, the charged capacitance value can be calculated.
COMSOL Multiphysics software indium tin oxide (ITO) capacitive touch panel chain-shaped electrode mountain-shaped electrode and capacitive gain
Hsi-Ting Huang Huai-Yi Chen Kuan-Chih Yeh
Department of Electronic Engineering,Huafan University,Taiwan 22301,R.O.C.
国际会议
香港
英文
351-354
2013-06-25（万方平台首次上网日期，不代表论文的发表时间）