Patent ID: 9052815
Filing Date: 2015-06-09
Classification: G06F

Abstract:
1. A touch sensing device, electrically connected to a touch panel, the touch panel comprising a plurality of first-direction electrodes disposed on a first plane and a plurality of second-direction electrodes disposed on a second plane, and a dielectric layer disposed between the first plane and the second plane, the touch sensing device comprising: a multiplexer, electrically connected to the touch panel via the plurality of first-direction electrodes and the plurality of second-direction electrodes, for selective voltage driving or voltage sensing the plurality of first-direction electrodes and the plurality of second-direction electrodes according to an operating mode; and a control unit, electrically connected to the multiplexer, for transmitting a control signal, transmitting a drive signal to the multiplexer, and receiving a sense signal from the multiplexer in response to the operating mode; wherein when the operating mode is an active mode, the multiplexer selects and voltage drives the plurality of first-direction electrodes according to the control signal, and selects and voltage senses the plurality of second-direction electrodes; and when the operating mode is an idle mode, the multiplexer selects and voltage senses at least one of the first-direction electrodes according to the control signal, and selects and drives at least one of the second-direction electrodes.