Touch panel having photo-sensors and read-out transistors and fabricating method thereof

A fabricating method of a touch panel, comprising:

• forming a patterned transparent conductive layer on a substrate, wherein the patterned transparent conductive layer comprises a plurality of first electrodes;
• forming a plurality of photo-sensing layers on the first electrodes;
• forming a first patterned conductive layer, wherein the first patterned conductive layer comprises a plurality of gate electrodes, a plurality of scan lines connected to the gate electrodes and a plurality of second electrodes, the gate electrodes and the scan lines are located on the substrate, the second electrodes are located on the photo-sensing layers, and the first electrodes, the photo-sensing layers and the second electrodes constitute a plurality of photo-sensors;
• forming a first dielectric layer on the substrate to cover the gate electrodes, the scan lines and the photo-sensors such that the photo-sensors are located between the substrate and the first dielectric layer;
• wherein the first dielectric layer is a gate dielectric layer;
• forming a plurality of channel layers on the first dielectric layer, wherein the channel layers are located above the gate electrodes;
• and
• forming a second patterned conductive layer, wherein the second patterned conductive layer comprises a plurality of source electrodes and a plurality of drain electrodes, the gate electrodes, the channel layers, the source electrodes and the drain electrodes constitute a plurality of read-out transistors, and each of the read-out transistors is electrically connected to the corresponding photo-sensor, respectively.