Patent ID: 8982089
Filing Date: 2015-03-17
Classification: G06F

Abstract:
1. A touch panel comprising: a touch panel body comprising a first substrate and a second substrate that is spaced apart from the first substrate, a plurality of driving electrodes that are arranged on the first substrate and the second substrate, and electro-rheological fluid that fills a gap between the first substrate and the second substrate; a driving unit that applies a driving voltage to all or a portion of the plurality of driving electrodes; and a sensing unit that applies a sensing signal sequentially to the plurality of driving electrodes and senses a variation in capacitance between the driving electrodes due to a variation of the gap between the first substrate and the second substrate in response to the sensing signal, wherein the sensing signal is applied by the sensing unit so that at least one sensing operation for all of the plurality of driving electrodes is performed while the driving voltage is applied by the driving unit, wherein the sensing signal is a sensing pulse voltage, and the plurality of driving electrodes are arranged on the first substrate and the second substrate to form driving electrode arrays, and the touch panel further comprises a combining unit that combines the driving voltage with the sensing pulse voltage and applies the combined voltage to the driving electrode arrays, and wherein the combined voltage is obtained by subtracting the sensing pulse voltage from the driving voltage.