Touch sensor with capacitive voltage divider
In certain embodiments, a touch-sensor controller is operable to apply a first voltage to a first drive line. The first drive line comprises a first one or more drive electrodes. The touch-sensor controller is further operable to measure a second voltage across a capacitor. The capacitor is coupled...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | In certain embodiments, a touch-sensor controller is operable to apply a first voltage to a first drive line. The first drive line comprises a first one or more drive electrodes. The touch-sensor controller is further operable to measure a second voltage across a capacitor. The capacitor is coupled to a first sense line. The first sense line comprises a first one or more sense electrodes. The touch-sensor controller is further operable to determine, based on the second voltage across the capacitor, a touch at a first capacitive node formed by an overlapping of a first region of the first drive line and a first region of the first sense line. |
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