| 摘要 |
A capacitive position sensor 22 for determining the position of an object along first and second directions is described. The sensor 22 comprises a substrate 24 having an arrangement of electrodes 26 mounted on a single surface thereof. The electrodes 26 are arranged so as to define an array of sensing cells 28 arranged in columns and rows to form a sensing area. Each of the sensing cell 28 including a column sensing electrode 32 and a row sensing electrode 30 with the column sensing electrodes 32 of sensing cells 28 in the same column being electrically coupled together and the row sensing electrodes 30 of sensing cells 28 in the same row also being electrically coupled together. At least one row or column is broken into a plurality of segments within the sensing area and the broken segments are connected together with an electrical connection 38 made on the same side of the substrate as the electrodes 26, but outside of the sensing area. So, there is no requirement for electrical connections 38 to cross within the sensing area, thus providing a capacitive position sensor 22 having a sensing area with electrodes 26 and electrical connections 28 on only one side of a substrate. |
