Patent ID: 8487900

Claim:
A touch display panel, comprising: an active device matrix substrate comprising: a plurality of data lines; a plurality of scan lines arranged crossing the data lines perpendicularly; a plurality of active devices disposed on a plurality of intersections of the data lines and the scan lines; a plurality of pixel electrodes electrically connected to the active devices; a plurality of sensing lines disposed on the data lines and arranged parallel thereto; a plurality of sensing devices disposed on the scan lines, wherein the sensing devices are thin film transistors (TFTs), each of the TFTs has a gate, a source, and a drain, the gate of each of the sensing device is connected to a transparent conductive layer, the source of each of the sensing device is connected to the transparent conductive layer, and the drain of each of the sensing device is electrically connected to one of a plurality of sensing electrodes correspondingly; an opposite substrate disposed opposing the active device matrix substrate, comprising: a black matrix; a plurality of first pillars disposed on the black matrix and arranged opposing the sensing lines; a plurality of second pillars disposed on the black matrix and arranged opposing the sensing devices; an opposite electrode disposed opposing the active device matrix substrate, and the opposite electrode covers the first pillars and the second pillars; and a liquid crystal layer, disposed between the active device matrix substrate and the opposite substrate; wherein according to an external pressure, at least one of the first pillars is electrically connected to least one of the sensing lines and at least one of the second pillars is electrically connected to least one of the sensing devices.