| 摘要 |
<p>A capacitive touchscreen using two sets of electrodes fabricated in a single plane. Individual electrodes of each set of electrodes are formed of a continuous length of conductive material such as fine wire or conductive coatings. The overall electrode pattern is such that there is no overlap thu s eliminating the need for insulating layers and/or coatings. Preferably the pattern comprises a plurality of approximately triangular electrodes, formed such that the base of one triangularly shaped electrode is adjacent to the apex of the next. A touchscreen sensor employing the disclosed sensing electrodes can use any of a variety of readout systems such as a frequency domain approach, a time domain approach or by detecting frequency shifts of LC oscillators. Preferably, prior to calculating position, a subset of electrod es localised around the touch position is determined. Once a set of localised electrodes has been determined the touch coordinates are calculated.</p> |
