Patent ID: 8736572

Claim:
A touch input device, comprising: a touch panel comprising: a plurality of X-directional conductive lines; a plurality of Y-directional conductive lines; and a plurality of capacitive nodes formed and spread on the X-directional conductive lines and the Y-directional conductive lines of the touch panel; a selection module electrically connected with the capacitive nodes of the touch panel, the selection module sequentially selecting pairs of a first capacitive node and a second capacitive node from the capacitive nodes of a same X-directional conductive line or a same Y-directional conductive line, the second capacitive node being adjacent to the first capacitive node in the same pair, wherein the selection module comprises: a first multiplexer being electrically connected with the X-directional conductive lines and the Y-directional conductive lines, the selection module utilizing the first multiplexer to select one X-directional conductive line from the X-directional conductive lines and select one Y-directional conductive line from the Y-directional conductive lines, so as to select the first capacitive node; and a second multiplexer being electrically connected with the X-directional conductive lines and the Y-directional conductive lines, the selection module utilizing the second multiplexer to select one X-directional conductive line from the X-directional conductive lines and select one Y-directional conductive line from the Y-directional conductive lines, so as to select the second capacitive node; and a differential detection module electrically connected with the selection module, the first multiplexer coupled between the touch panel and the differential detection module, the second multiplexer coupled between the touch panel and the differential detection module, the differential detection module detecting a capacitance difference between the first capacitive node and the second capacitive node selected by the selection module, so as to generate a touch detection signal.