The optical detection apparatus and method for making

Such an optical detection apparatus and a manufacturing method of the optical detection device includes a substrate, a thin film transistor disposed on the substrate, a light sensing element, planarization layer, and a light emitting diode. The thin film transistor comprising a gate electrode disposed on the substrate, a channel layer, a gate dielectric layer between the gate and the channel layer, and source and drain are respectively located on both sides of the channel layer. And a light sensing element comprising a metal electrode located on the gate dielectric layer and connected to the drain, located on the light sensing layer on the metal electrode and the transparent electrode located on the light-sensing layer. Planarization layer covering the thin film transistor and the light sensing element is at least partially. The organic light emitting diode is located on the planar layer, and the cathode and the anode of the organic light emitting diode are electrically connected to the gate line and the data read line.