Abstract
The real multitouch panel without ghost points is investigated using the
structural patterns and an algorithm matrix of the two configurations. The pixels of
patterns on the multitouch panel include virtual high and low resistances. The algorithm
matrix with two configurations of equivalent circuit is derived using a voltage divider
rule for array scanning. The fabrication process of structural patterns is carried out
using microelectromechanical systems technology. The optical transmittance and
absorbance of the multitouch panel in the UV, Vis, and IR regions are measured using a
spectrophotometer. The multitouch panel, containing an array of 30 x 30, has a
pixel size of 2 x 2 mm<sup>2</sup> and a pitch distance of 2 mm. The average
values of high and low impedances are 53.23 and 9.3 k Ω, respectively. The maximum
transmittance is about 74.2% at the wavelength of 692 nm. The multitouch panel based on
high and low impedance patterns has good adjacent touch resolution for reality
multitouch applications. In addition, the patterned design and the algorithm matrix
provide unlimited multitouch points and avoid the ghost points.
© 2011 IEEE
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