Patent ID: 8659559

Claim:
An active-matrix touch display device, comprising: an array substrate having a top surface, a bottom surface opposite the top surface and a signal layer, the signal layer disposed on the bottom surface, the signal layer including plural scan lines and plural data lines, wherein pixels are respectively formed at intersections of the plural scan lines and the plural data lines, and each pixel includes a switching element and a pixel electrode; an opposite substrate disposed to be opposite the array substrate and having a common electrode opposite the pixel electrodes, wherein the opposite substrate is positioned farther from a user than the array substrate is; a display material layer sandwiched between the array substrate and the opposite substrate; a gate driver for sequentially supplying a gate pulse to the plural scan lines, wherein output terminals of the gate driver and the scan lines are connected at plural first connection nodes; a source driver for supplying plural image data to the plural data lines, wherein output terminals of the source driver and the data lines are connected at plural second connection nodes; at least one sensing circuit for performing touch detection on at least one of the plural scan lines and the plural data lines, each of the at least one sensing circuit comprising: a driving unit for supplying a driving signal via at least one conductive line path to at least one of the plural first connection nodes and the plural second connection nodes according to a specified frequency; and a detecting unit for performing signal extraction on at least one of output signals of the plural first connection nodes and the plural second connection nodes according to the specified frequency to generate a measuring value, wherein the driving unit and the detecting unit both use at least a portion of the at least one conductive line path; and a controller for controlling the gate driver, the source driver and the at least one sensing circuit.