| 摘要 |
A detecting device and method for a capacitive touch screen is proposed. The present invention employs a multiple-electrode driving mode, which sequentially drives sets of driving electrodes among driving electrodes. A reduced image is generated from the signals of a plurality of detecting electrodes. In addition, a single-electrode driving mode is employed to drive the first and the last driving electrodes, respectively, thereby obtaining first- and second-side 1D sensing information for single-electrode driving from the signals of the detecting electrodes, respectively. An expanded image can be generated based on the first-side 1D sensing information for single-electrode driving, the reduced image and the second-side 1D sensing information for single-electrode driving in order to detect approaches or touches made by external conductive objects to the capacitive touch screen.
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