National Yang Ming Chiao Tung University

Jyun-Yao Ruan

Paul C P Chao

Paul C-p Chao

Jian-Ting Chen

Jian Ting Chen

A multi-point sensing method used in a capacitive touch panel is disclosed to detect the voltage variation of every electrode patterned on two parallel electrode layers by means of a capacitive sensing circuit, and measure the vertical capacitance at the intersection crossed by the electrodes of the two electrode layers where the voltage variation is detected, and then compare the vertical capacitance thus measured with the initial vertical capacitance at the same intersection before touch, as a result, the intersection corresponding to the measured vertical capacitance can be determined as the touch point when the comparison result shows different.

Multipoint sensing method for capacitive touch panel

A capacitive touch panel with particular conductive pattern design reduces the mutual interference between the upper and lower electrode and perform three-dimensional capacitance detection and double-faced detection, and may be applied in large dimension touch panel with high sensitivity.

Growing community of inventors

Changhua County, Taiwan

Jyun-Yao Ruan