Patent ID: 8669954
Filing Date: 2014-03-11
Classification: G06F

Abstract:
1. A touch panel comprising: a substrate; a plurality of scan lines disposed on the substrate; a plurality of data output lines disposed on the substrate, the scan lines and the data output lines dividing the substrate into a plurality of sensing regions; a signal processing unit electrically coupled to the data output lines so as to obtain electric potential of the data output lines and perform a corresponding processing step, and the signal processing unit outputting processed result; and a plurality of touch sensing units, each touch sensing unit being disposed in a corresponding sensing region of the sensing regions, each touch sensing unit being electrically coupled to a corresponding scan line of the scan lines and a corresponding data output line of the data output lines, each touch sensing unit being controlled whether to perform a touch sensing action by the corresponding scan line, and at least one of the touch sensing units comprising: wherein when the touch sensing unit is controlled to perform the touch sensing action by the corresponding scan line, the output circuit determines whether to transmit the electric potential of the corresponding scan line to the corresponding data output line according to electric potential of the reference point; wherein the output circuit comprises: a first transistor having a gate, a first drain/source and a second drain/source, the gate of the first transistor being electrically coupled to the reference point, and the first drain/source of the first transistor being electrically coupled to the corresponding scan line; and a second transistor having a gate, a first drain/source and a second drain/source, the gate of the second transistor being electrically coupled to the corresponding scan line, the first drain/source of the second transistor being electrically coupled to the corresponding data output line, and the second drain/source of the second transistor being electrically coupled to the second drain/source of the first transistor.